CVE-2025-71120

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2025-71120", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-01-13T15:30:19.654Z", "datePublished": "2026-01-14T15:06:07.194Z", "dateUpdated": "2026-11-10T12:39:11.860Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:12:11.294Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nSUNRPC: svcauth_gss: avoid NULL deref on zero length gss_token in gss_read_proxy_verf\n\nA zero length gss_token results in pages == 0 and in_token->pages[0]\nis NULL. The code unconditionally evaluates\npage_address(in_token->pages[0]) for the initial memcpy, which can\ndereference NULL even when the copy length is 0. Guard the first\nmemcpy so it only runs when length > 0."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "baseScore": 7.5, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:N - An unauthenticated remote client can send an RPCSEC_GSS INIT request with a zero-length token to a network-facing kernel SUNRPC service using gss-proxy.\nAC:L - A single crafted request deterministically produces zero pages and a NULL first-page pointer; no race, timing, or memory shaping is required.\nPR:N - The fault occurs during pre-authentication GSS context establishment, before Kerberos validation, export authorization, reserved-port checks, or the gss-proxy upcall.\nUI:N - Once the affected SUNRPC service and gss-proxy backend are running, exploitation requires no action by a victim.\nS:U - The fault affects the same host kernel and RPC service processing the malicious request and does not cross a virtualization or IOMMU boundary.\nC:N - The zero-length operation copies no bytes and exposes no kernel memory.\nI:N - No bytes are written and no memory corruption or attacker-controlled modification occurs.\nA:H - Evaluating page_address on the NULL page can cause a kernel oops or panic, and unauthenticated requests can be repeated to kill workers or deny service."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/sunrpc/auth_gss/svcauth_gss.c"], "versions": [{"version": "5866efa8cbfbadf3905072798e96652faf02dbe8", "lessThan": "a8f1e445ce3545c90d69c9e8ff8f7821825fe810", "status": "affected", "versionType": "git"}, {"version": "5866efa8cbfbadf3905072798e96652faf02dbe8", "lessThan": "4dedb6a11243a5c9eb9dbb97bca3c98bd725e83d", "status": "affected", "versionType": "git"}, {"version": "5866efa8cbfbadf3905072798e96652faf02dbe8", "lessThan": "f9e53f69ac3bc4ef568b08d3542edac02e83fefd", "status": "affected", "versionType": "git"}, {"version": "5866efa8cbfbadf3905072798e96652faf02dbe8", "lessThan": "7452d53f293379e2c38cfa8ad0694aa46fc4788b", "status": "affected", "versionType": "git"}, {"version": "5866efa8cbfbadf3905072798e96652faf02dbe8", "lessThan": "a2c6f25ab98b423f99ccd94874d655b8bcb01a19", "status": "affected", "versionType": "git"}, {"version": "5866efa8cbfbadf3905072798e96652faf02dbe8", "lessThan": "1c8bb965e9b0559ff0f5690615a527c30f651dd8", "status": "affected", "versionType": "git"}, {"version": "5866efa8cbfbadf3905072798e96652faf02dbe8", "lessThan": "d4b69a6186b215d2dc1ebcab965ed88e8d41768d", "status": "affected", "versionType": "git"}, {"version": "66ed7b413d31c6ff23901ac4443b1cc1af2f6113", "status": "affected", "versionType": "git"}, {"version": "7be8c165dc81564705e8e0b72d398ef708f67eaa", "status": "affected", "versionType": "git"}, {"version": "4.19.99", "lessThan": "4.20", "status": "affected", "versionType": "semver"}, {"version": "5.4.15", "lessThan": "5.5", "status": "affected", "versionType": "semver"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/sunrpc/auth_gss/svcauth_gss.c"], "versions": [{"version": "5.5", "status": "affected"}, {"version": "0", "lessThan": "5.5", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.248", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.198", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.160", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.120", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.64", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.3", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.19", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.5", "versionEndExcluding": "5.10.248"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.5", "versionEndExcluding": "5.15.198"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.5", "versionEndExcluding": "6.1.160"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.5", "versionEndExcluding": "6.6.120"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.5", "versionEndExcluding": "6.12.64"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.5", "versionEndExcluding": "6.18.3"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.5", "versionEndExcluding": "6.19"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.19.99"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.4.15"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/a8f1e445ce3545c90d69c9e8ff8f7821825fe810"}, {"url": "https://git.kernel.org/stable/c/4dedb6a11243a5c9eb9dbb97bca3c98bd725e83d"}, {"url": "https://git.kernel.org/stable/c/f9e53f69ac3bc4ef568b08d3542edac02e83fefd"}, {"url": "https://git.kernel.org/stable/c/7452d53f293379e2c38cfa8ad0694aa46fc4788b"}, {"url": "https://git.kernel.org/stable/c/a2c6f25ab98b423f99ccd94874d655b8bcb01a19"}, {"url": "https://git.kernel.org/stable/c/1c8bb965e9b0559ff0f5690615a527c30f651dd8"}, {"url": "https://git.kernel.org/stable/c/d4b69a6186b215d2dc1ebcab965ed88e8d41768d"}], "title": "SUNRPC: svcauth_gss: avoid NULL deref on zero length gss_token in gss_read_proxy_verf", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2025-71120", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-06-10T20:42:25.150500Z"}}}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-476", "description": "CWE-476 NULL Pointer Dereference"}]}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-19T18:15:14.623Z"}}, {"x_adpType": "supplier", "providerMetadata": {"orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "shortName": "siemens-SADP", "dateUpdated": "2026-11-10T12:39:11.860Z"}, "affected": [{"vendor": "Siemens", "product": "SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0)", "versions": [{"status": "affected", "version": "V3.1.6", "lessThan": "*", "versionType": "custom"}], "defaultStatus": "unknown"}, {"vendor": "Siemens", "product": "SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0)", "versions": [{"status": "affected", "version": "V3.1.7", "lessThan": "*", "versionType": "custom"}], "defaultStatus": "unknown"}, {"vendor": "Siemens", "product": "SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0)", "versions": [{"status": "affected", "version": "V3.1.6", "lessThan": "*", "versionType": "custom"}], "defaultStatus": "unknown"}, {"vendor": "Siemens", "product": "SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0)", "versions": [{"status": "affected", "version": "V3.1.7", "lessThan": "*", "versionType": "custom"}], "defaultStatus": "unknown"}, {"vendor": "Siemens", "product": "SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0)", "versions": [{"status": "affected", "version": "V3.1.6", "lessThan": "*", "versionType": "custom"}], "defaultStatus": "unknown"}, {"vendor": "Siemens", "product": "SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0)", "versions": [{"status": "affected", "version": "V3.1.7", "lessThan": "*", "versionType": "custom"}], "defaultStatus": "unknown"}, {"vendor": "Siemens", "product": "SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0)", "versions": [{"status": "affected", "version": "V3.1.6", "lessThan": "*", "versionType": "custom"}], "defaultStatus": "unknown"}, {"vendor": "Siemens", "product": "SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0)", "versions": [{"status": "affected", "version": "V3.1.7", "lessThan": "*", "versionType": "custom"}], "defaultStatus": "unknown"}, {"vendor": "Siemens", "product": "SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0)", "versions": [{"status": "affected", "version": "V3.1.6", "lessThan": "*", "versionType": "custom"}], "defaultStatus": "unknown"}, {"vendor": "Siemens", "product": "SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0)", "versions": [{"status": "affected", "version": "V3.1.7", "lessThan": "*", "versionType": "custom"}], "defaultStatus": "unknown"}], "references": [{"url": "https://cert-portal.siemens.com/productcert/html/ssa-019113.html"}, {"url": "https://cert-portal.siemens.com/productcert/html/ssa-457936.html"}]}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"affected": [{"vendor": "Siemens", "product": "SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0)", "versions": [{"status": "affected", "version": "V3.1.6", "lessThan": "*", "versionType": "custom"}], "defaultStatus": "unknown"}, {"vendor": "Siemens", "product": "SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0)", "versions": [{"status": "affected", "version": "V3.1.7", "lessThan": "*", "versionType": "custom"}], "defaultStatus": "unknown"}, {"vendor": "Siemens", "product": "SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0)", "versions": [{"status": "affected", "version": "V3.1.6", "lessThan": "*", "versionType": "custom"}], "defaultStatus": "unknown"}, {"vendor": "Siemens", "product": "SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0)", "versions": [{"status": "affected", "version": "V3.1.7", "lessThan": "*", "versionType": "custom"}], "defaultStatus": "unknown"}, {"vendor": "Siemens", "product": "SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0)", "versions": [{"status": "affected", "version": "V3.1.6", "lessThan": "*", "versionType": "custom"}], "defaultStatus": "unknown"}, {"vendor": "Siemens", "product": "SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0)", "versions": [{"status": "affected", "version": "V3.1.7", "lessThan": "*", "versionType": "custom"}], "defaultStatus": "unknown"}, {"vendor": "Siemens", "product": "SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0)", "versions": [{"status": "affected", "version": "V3.1.6", "lessThan": "*", "versionType": "custom"}], "defaultStatus": "unknown"}, {"vendor": "Siemens", "product": "SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0)", "versions": [{"status": "affected", "version": "V3.1.7", "lessThan": "*", "versionType": "custom"}], "defaultStatus": "unknown"}, {"vendor": "Siemens", "product": "SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0)", "versions": [{"status": "affected", "version": "V3.1.6", "lessThan": "*", "versionType": "custom"}], "defaultStatus": "unknown"}, {"vendor": "Siemens", "product": "SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0)", "versions": [{"status": "affected", "version": "V3.1.7", "lessThan": "*", "versionType": "custom"}], "defaultStatus": "unknown"}], "x_adpType": "supplier", "references": [{"url": "https://cert-portal.siemens.com/productcert/html/ssa-019113.html"}, {"url": "https://cert-portal.siemens.com/productcert/html/ssa-457936.html"}], "providerMetadata": {"orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "shortName": "siemens-SADP", "dateUpdated": "2026-11-10T12:39:11.860Z"}}, {"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2025-71120", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-06-10T20:42:25.150500Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-06-11T17:39:23.386Z"}}], "cna": {"title": "SUNRPC: svcauth_gss: avoid NULL deref on zero length gss_token in gss_read_proxy_verf", "metrics": [{"cvssV3_1": {"version": "3.1", "baseScore": 7.5, "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}, "scenarios": [{"lang": "en", "value": "AV:N - An unauthenticated remote client can send an RPCSEC_GSS INIT request with a zero-length token to a network-facing kernel SUNRPC service using gss-proxy.\nAC:L - A single crafted request deterministically produces zero pages and a NULL first-page pointer; no race, timing, or memory shaping is required.\nPR:N - The fault occurs during pre-authentication GSS context establishment, before Kerberos validation, export authorization, reserved-port checks, or the gss-proxy upcall.\nUI:N - Once the affected SUNRPC service and gss-proxy backend are running, exploitation requires no action by a victim.\nS:U - The fault affects the same host kernel and RPC service processing the malicious request and does not cross a virtualization or IOMMU boundary.\nC:N - The zero-length operation copies no bytes and exposes no kernel memory.\nI:N - No bytes are written and no memory corruption or attacker-controlled modification occurs.\nA:H - Evaluating page_address on the NULL page can cause a kernel oops or panic, and unauthenticated requests can be repeated to kill workers or deny service."}]}], "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "5866efa8cbfbadf3905072798e96652faf02dbe8", "lessThan": "a8f1e445ce3545c90d69c9e8ff8f7821825fe810", "versionType": "git"}, {"status": "affected", "version": "5866efa8cbfbadf3905072798e96652faf02dbe8", "lessThan": "4dedb6a11243a5c9eb9dbb97bca3c98bd725e83d", "versionType": "git"}, {"status": "affected", "version": "5866efa8cbfbadf3905072798e96652faf02dbe8", "lessThan": "f9e53f69ac3bc4ef568b08d3542edac02e83fefd", "versionType": "git"}, {"status": "affected", "version": "5866efa8cbfbadf3905072798e96652faf02dbe8", "lessThan": "7452d53f293379e2c38cfa8ad0694aa46fc4788b", "versionType": "git"}, {"status": "affected", "version": "5866efa8cbfbadf3905072798e96652faf02dbe8", "lessThan": "a2c6f25ab98b423f99ccd94874d655b8bcb01a19", "versionType": "git"}, {"status": "affected", "version": "5866efa8cbfbadf3905072798e96652faf02dbe8", "lessThan": "1c8bb965e9b0559ff0f5690615a527c30f651dd8", "versionType": "git"}, {"status": "affected", "version": "5866efa8cbfbadf3905072798e96652faf02dbe8", "lessThan": "d4b69a6186b215d2dc1ebcab965ed88e8d41768d", "versionType": "git"}, {"status": "affected", "version": "66ed7b413d31c6ff23901ac4443b1cc1af2f6113", "versionType": "git"}, {"status": "affected", "version": "7be8c165dc81564705e8e0b72d398ef708f67eaa", "versionType": "git"}, {"status": "affected", "version": "4.19.99", "lessThan": "4.20", "versionType": "semver"}, {"status": "affected", "version": "5.4.15", "lessThan": "5.5", "versionType": "semver"}], "programFiles": ["net/sunrpc/auth_gss/svcauth_gss.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "5.5"}, {"status": "unaffected", "version": "0", "lessThan": "5.5", "versionType": "semver"}, {"status": "unaffected", "version": "5.10.248", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.198", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.160", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.120", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.64", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.3", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "6.19", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["net/sunrpc/auth_gss/svcauth_gss.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/a8f1e445ce3545c90d69c9e8ff8f7821825fe810"}, {"url": "https://git.kernel.org/stable/c/4dedb6a11243a5c9eb9dbb97bca3c98bd725e83d"}, {"url": "https://git.kernel.org/stable/c/f9e53f69ac3bc4ef568b08d3542edac02e83fefd"}, {"url": "https://git.kernel.org/stable/c/7452d53f293379e2c38cfa8ad0694aa46fc4788b"}, {"url": "https://git.kernel.org/stable/c/a2c6f25ab98b423f99ccd94874d655b8bcb01a19"}, {"url": "https://git.kernel.org/stable/c/1c8bb965e9b0559ff0f5690615a527c30f651dd8"}, {"url": "https://git.kernel.org/stable/c/d4b69a6186b215d2dc1ebcab965ed88e8d41768d"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nSUNRPC: svcauth_gss: avoid NULL deref on zero length gss_token in gss_read_proxy_verf\n\nA zero length gss_token results in pages == 0 and in_token->pages[0]\nis NULL. The code unconditionally evaluates\npage_address(in_token->pages[0]) for the initial memcpy, which can\ndereference NULL even when the copy length is 0. Guard the first\nmemcpy so it only runs when length > 0."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.10.248", "versionStartIncluding": "5.5"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.198", "versionStartIncluding": "5.5"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1.160", "versionStartIncluding": "5.5"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6.120", "versionStartIncluding": "5.5"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.12.64", "versionStartIncluding": "5.5"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.18.3", "versionStartIncluding": "5.5"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.19", "versionStartIncluding": "5.5"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionStartIncluding": "4.19.99"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionStartIncluding": "5.4.15"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:12:11.294Z"}}}, "cveMetadata": {"cveId": "CVE-2025-71120", "state": "PUBLISHED", "dateUpdated": "2026-11-10T12:39:11.860Z", "dateReserved": "2026-01-13T15:30:19.654Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2026-01-14T15:06:07.194Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["net/sunrpc/auth_gss/svcauth_gss.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "a8f1e445ce3545c90d69c9e8ff8f7821825fe810", "status": "affected", "version": "5866efa8cbfbadf3905072798e96652faf02dbe8", "versionType": "git"}, {"lessThan": "4dedb6a11243a5c9eb9dbb97bca3c98bd725e83d", "status": "affected", "version": "5866efa8cbfbadf3905072798e96652faf02dbe8", "versionType": "git"}, {"lessThan": "f9e53f69ac3bc4ef568b08d3542edac02e83fefd", "status": "affected", "version": "5866efa8cbfbadf3905072798e96652faf02dbe8", "versionType": "git"}, {"lessThan": "7452d53f293379e2c38cfa8ad0694aa46fc4788b", "status": "affected", "version": "5866efa8cbfbadf3905072798e96652faf02dbe8", "versionType": "git"}, {"lessThan": "a2c6f25ab98b423f99ccd94874d655b8bcb01a19", "status": "affected", "version": "5866efa8cbfbadf3905072798e96652faf02dbe8", "versionType": "git"}, {"lessThan": "1c8bb965e9b0559ff0f5690615a527c30f651dd8", "status": "affected", "version": "5866efa8cbfbadf3905072798e96652faf02dbe8", "versionType": "git"}, {"lessThan": "d4b69a6186b215d2dc1ebcab965ed88e8d41768d", "status": "affected", "version": "5866efa8cbfbadf3905072798e96652faf02dbe8", "versionType": "git"}, {"status": "affected", "version": "66ed7b413d31c6ff23901ac4443b1cc1af2f6113", "versionType": "git"}, {"status": "affected", "version": "7be8c165dc81564705e8e0b72d398ef708f67eaa", "versionType": "git"}, {"lessThan": "4.20", "status": "affected", "version": "4.19.99", "versionType": "semver"}, {"lessThan": "5.5", "status": "affected", "version": "5.4.15", "versionType": "semver"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["net/sunrpc/auth_gss/svcauth_gss.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.5"}, {"lessThan": "5.5", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.248", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.198", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.160", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.120", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.64", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.3", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "6.19", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"affectedData": [{"defaultStatus": "unknown", "product": "SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0)", "vendor": "Siemens", "versions": [{"lessThan": "*", "status": "affected", "version": "V3.1.6", "versionType": "custom"}]}, {"defaultStatus": "unknown", "product": "SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0)", "vendor": "Siemens", "versions": [{"lessThan": "*", "status": "affected", "version": "V3.1.7", "versionType": "custom"}]}, {"defaultStatus": "unknown", "product": "SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0)", "vendor": "Siemens", "versions": [{"lessThan": "*", "status": "affected", "version": "V3.1.6", "versionType": "custom"}]}, {"defaultStatus": "unknown", "product": "SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0)", "vendor": "Siemens", "versions": [{"lessThan": "*", "status": "affected", "version": "V3.1.7", "versionType": "custom"}]}, {"defaultStatus": "unknown", "product": "SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0)", "vendor": "Siemens", "versions": [{"lessThan": "*", "status": "affected", "version": "V3.1.6", "versionType": "custom"}]}, {"defaultStatus": "unknown", "product": "SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0)", "vendor": "Siemens", "versions": [{"lessThan": "*", "status": "affected", "version": "V3.1.7", "versionType": "custom"}]}, {"defaultStatus": "unknown", "product": "SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0)", "vendor": "Siemens", "versions": [{"lessThan": "*", "status": "affected", "version": "V3.1.6", "versionType": "custom"}]}, {"defaultStatus": "unknown", "product": "SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0)", "vendor": "Siemens", "versions": [{"lessThan": "*", "status": "affected", "version": "V3.1.7", "versionType": "custom"}]}, {"defaultStatus": "unknown", "product": "SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0)", "vendor": "Siemens", "versions": [{"lessThan": "*", "status": "affected", "version": "V3.1.6", "versionType": "custom"}]}, {"defaultStatus": "unknown", "product": "SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0)", "vendor": "Siemens", "versions": [{"lessThan": "*", "status": "affected", "version": "V3.1.7", "versionType": "custom"}]}], "source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "97340910-B0B6-42CC-B4FA-E277DFB61C71", "versionEndExcluding": "4.20", "versionStartIncluding": "4.19.99", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "AD6E1663-093D-4E18-9656-976DFB4012F6", "versionEndExcluding": "5.5", "versionStartIncluding": "5.4.15", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "6CAA2035-2245-429B-8FD3-733689D62A54", "versionEndExcluding": "5.10.248", "versionStartIncluding": "5.5.1", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "82159CAA-B6BA-43C6-85D8-65BDBC175A7E", "versionEndExcluding": "5.15.198", "versionStartIncluding": "5.11", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "C10CC03E-16A9-428A-B449-40D3763E15F6", "versionEndExcluding": "6.1.160", "versionStartIncluding": "5.16", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "43C3A206-5EEE-417B-AA0F-EF8972E7A9F0", "versionEndExcluding": "6.6.120", "versionStartIncluding": "6.2", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "32BF4A52-377C-44ED-B5E6-7EA5D896E98B", "versionEndExcluding": "6.12.64", "versionStartIncluding": "6.7", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "2DC484D8-FB4F-4112-900F-AE333B6FE7A7", "versionEndExcluding": "6.18.3", "versionStartIncluding": "6.13", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.5:-:*:*:*:*:*:*", "matchCriteriaId": "EE98F46A-F7D9-4609-B6A0-882E7F0D378C", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.19:rc1:*:*:*:*:*:*", "matchCriteriaId": "17B67AA7-40D6-4AFA-8459-F200F3D7CFD1", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.19:rc2:*:*:*:*:*:*", "matchCriteriaId": "C47E4CC9-C826-4FA9-B014-7FE3D9B318B2", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.19:rc3:*:*:*:*:*:*", "matchCriteriaId": "F71D92C0-C023-48BD-B3B6-70B638EEE298", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.19:rc4:*:*:*:*:*:*", "matchCriteriaId": "13580667-0A98-40CC-B29F-D12790B91BDB", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.19:rc5:*:*:*:*:*:*", "matchCriteriaId": "CAD1FED7-CF48-47BF-AC7D-7B6FA3C065FC", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.19:rc6:*:*:*:*:*:*", "matchCriteriaId": "3EF854A1-ABB1-4E93-BE9A-44569EC76C0D", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.19:rc7:*:*:*:*:*:*", "matchCriteriaId": "F5DC0CA6-F0AF-4DDF-A882-3DADB9A886A7", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.19:rc8:*:*:*:*:*:*", "matchCriteriaId": "EB5B7DFC-C36B-45D8-922C-877569FDDF43", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nSUNRPC: svcauth_gss: avoid NULL deref on zero length gss_token in gss_read_proxy_verf\n\nA zero length gss_token results in pages == 0 and in_token->pages[0]\nis NULL. The code unconditionally evaluates\npage_address(in_token->pages[0]) for the initial memcpy, which can\ndereference NULL even when the copy length is 0. Guard the first\nmemcpy so it only runs when length > 0."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nSUNRPC: svcauth_gss: evitar desreferenciaci\u00f3n de NULL en gss_token de longitud cero en gss_read_proxy_verf\n\nUn gss_token de longitud cero resulta en pages == 0 y in_token->pages[0] es NULL. El c\u00f3digo eval\u00faa incondicionalmente page_address(in_token->pages[0]) para el memcpy inicial, lo que puede desreferenciar NULL incluso cuando la longitud de la copia es 0. Proteger el primer memcpy para que solo se ejecute cuando length > 0."}], "id": "CVE-2025-71120", "lastModified": "2026-11-10T13:18:06.647", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-71120", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-06-10T20:42:25.150500Z", "version": "2.0.3"}}]}, "published": "2026-01-14T15:16:01.690", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/1c8bb965e9b0559ff0f5690615a527c30f651dd8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/4dedb6a11243a5c9eb9dbb97bca3c98bd725e83d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/7452d53f293379e2c38cfa8ad0694aa46fc4788b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a2c6f25ab98b423f99ccd94874d655b8bcb01a19"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a8f1e445ce3545c90d69c9e8ff8f7821825fe810"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/d4b69a6186b215d2dc1ebcab965ed88e8d41768d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/f9e53f69ac3bc4ef568b08d3542edac02e83fefd"}, {"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "url": "https://cert-portal.siemens.com/productcert/html/ssa-019113.html"}, {"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "url": "https://cert-portal.siemens.com/productcert/html/ssa-457936.html"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-476"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-476"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"bugzilla": {"description": "kernel: SUNRPC: svcauth_gss: avoid NULL deref on zero length gss_token in gss_read_proxy_verf", "id": "2429607", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2429607"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "details": ["No description is available for this CVE."], "name": "CVE-2025-71120", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Under investigation", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-01-14T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-71120\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-71120\nhttps://lore.kernel.org/linux-cve-announce/2026011415-CVE-2025-71120-d0a6@gregkh/T"], "threat_severity": "Important"}

{}