CVE-2026-53078

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-53078", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-06-09T07:44:35.383Z", "datePublished": "2026-06-24T16:30:18.858Z", "dateUpdated": "2026-10-19T19:47:15.752Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-09-14T11:58:30.086Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Fix same-register dst/src OOB read and pointer leak in sock_ops\n\nWhen a BPF sock_ops program accesses ctx fields with dst_reg == src_reg,\nthe SOCK_OPS_GET_SK() and SOCK_OPS_GET_FIELD() macros fail to zero the\ndestination register in the !fullsock / !locked_tcp_sock path.\n\nBoth macros borrow a temporary register to check is_fullsock /\nis_locked_tcp_sock when dst_reg == src_reg, because dst_reg holds the\nctx pointer. When the check is false (e.g., TCP_NEW_SYN_RECV state with\na request_sock), dst_reg should be zeroed but is not, leaving the stale\nctx pointer:\n\n - SOCK_OPS_GET_SK: dst_reg retains the ctx pointer, passes NULL checks\n as PTR_TO_SOCKET_OR_NULL, and can be used as a bogus socket pointer,\n leading to stack-out-of-bounds access in helpers like\n bpf_skc_to_tcp6_sock().\n\n - SOCK_OPS_GET_FIELD: dst_reg retains the ctx pointer which the\n verifier believes is a SCALAR_VALUE, leaking a kernel pointer.\n\nFix both macros by:\n - Changing JMP_A(1) to JMP_A(2) in the fullsock path to skip the\n added instruction.\n - Adding BPF_MOV64_IMM(si->dst_reg, 0) after the temp register\n restore in the !fullsock path, placed after the restore because\n dst_reg == src_reg means we need src_reg intact to read ctx->temp."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:L - Exploitation requires loading and attaching a crafted BPF_PROG_TYPE_SOCK_OPS program through the local bpf() interface. Remote TCP traffic can trigger an attached program, but cannot by itself create the malicious program.\nAC:L - The attacker controls the BPF bytecode pattern and can reliably trigger non-fullsock/request_sock sock_ops callbacks with local TCP activity. No uncontrolled race or rare runtime condition is required.\nPR:L - Loading/attaching sock_ops BPF requires BPF and net-admin style privileges, but these can be available to a local user through user-namespace/BPF-token delegation in plausible deployments. Under the required overestimate rule this is Low rather than High.\nUI:N - No victim action is needed after the attacker loads and attaches the crafted sock_ops program. The attacker can trigger the callback path directly.\nS:U - The impact is within the same kernel security authority. This is not a VM escape, IOMMU bypass, or cross-scope boundary violation.\nC:H - The bug leaks a kernel context pointer as a scalar and lets it be used as a bogus socket pointer. Helper dereferences can perform kernel stack out-of-bounds reads, so confidentiality impact is High.\nI:H - The bogus verifier-approved socket pointer can reach helpers that mutate socket-associated state, creating plausible kernel memory corruption from a misinterpreted stack object. With uncertainty required to resolve upward, integrity impact is High.\nA:H - The same bogus pointer path can cause kernel stack out-of-bounds accesses and invalid helper dereferences. These can crash or panic the kernel, so availability impact is High."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/core/filter.c"], "versions": [{"version": "fd09af010788a884de1c39537c288830c3d305db", "lessThan": "db1200ec2c3ddf119d4d9ba67982063df06bbacb", "status": "affected", "versionType": "git"}, {"version": "fd09af010788a884de1c39537c288830c3d305db", "lessThan": "4c1c5efd9d1d74743d41ce4e1600501b4feb6827", "status": "affected", "versionType": "git"}, {"version": "fd09af010788a884de1c39537c288830c3d305db", "lessThan": "0e6b30657bbc771f38025c828d722b6162428508", "status": "affected", "versionType": "git"}, {"version": "fd09af010788a884de1c39537c288830c3d305db", "lessThan": "64eaf4ecda007140ddcdb28e00c48c9c69aaba39", "status": "affected", "versionType": "git"}, {"version": "fd09af010788a884de1c39537c288830c3d305db", "lessThan": "2a2c98141e0a75f2d4a7d78b0316c88b3da784ac", "status": "affected", "versionType": "git"}, {"version": "fd09af010788a884de1c39537c288830c3d305db", "lessThan": "22400725de070b787cd6d806c5795370ab46d269", "status": "affected", "versionType": "git"}, {"version": "fd09af010788a884de1c39537c288830c3d305db", "lessThan": "18e3ffde1822f0b48b1753bf34aa97ce839df1d8", "status": "affected", "versionType": "git"}, {"version": "fd09af010788a884de1c39537c288830c3d305db", "lessThan": "10f86a2a5c91fc4c4d001960f1c21abe52545ef6", "status": "affected", "versionType": "git"}, {"version": "48be3df15aa19c04eadf156c9129293c9a10389f", "status": "affected", "versionType": "git"}, {"version": "cd4644d904e1d153d516e73e2e127e7a2fe687e1", "status": "affected", "versionType": "git"}, {"version": "6e0bc946cbeec538322820786b5fb5200a2216ab", "status": "affected", "versionType": "git"}, {"version": "a7e52f7f675046d9ffc5692d815fa67c82fcdbf5", "status": "affected", "versionType": "git"}, {"version": "db7f8c57dbdd31f7e59f8dc8d1e1b38607a320ef", "status": "affected", "versionType": "git"}, {"version": "5.7.18", "lessThan": "5.8", "status": "affected", "versionType": "semver"}, {"version": "5.8.4", "lessThan": "5.9", "status": "affected", "versionType": "semver"}, {"version": "5.4.61", "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/core/filter.c"], "versions": [{"version": "5.9", "status": "affected"}, {"version": "0", "lessThan": "5.9", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.270", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.221", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.188", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.157", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.101", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.42", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0.10", "lessThanOrEqual": "7.0.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1", "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": "5.9", "versionEndExcluding": "5.10.270"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.9", "versionEndExcluding": "5.15.221"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.9", "versionEndExcluding": "6.1.188"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.9", "versionEndExcluding": "6.6.157"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.9", "versionEndExcluding": "6.12.101"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.9", "versionEndExcluding": "6.18.42"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.9", "versionEndExcluding": "7.0.10"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.9", "versionEndExcluding": "7.1"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7.18"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.8.4"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.4.61"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7.18"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.8.4"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/db1200ec2c3ddf119d4d9ba67982063df06bbacb"}, {"url": "https://git.kernel.org/stable/c/4c1c5efd9d1d74743d41ce4e1600501b4feb6827"}, {"url": "https://git.kernel.org/stable/c/0e6b30657bbc771f38025c828d722b6162428508"}, {"url": "https://git.kernel.org/stable/c/64eaf4ecda007140ddcdb28e00c48c9c69aaba39"}, {"url": "https://git.kernel.org/stable/c/2a2c98141e0a75f2d4a7d78b0316c88b3da784ac"}, {"url": "https://git.kernel.org/stable/c/22400725de070b787cd6d806c5795370ab46d269"}, {"url": "https://git.kernel.org/stable/c/18e3ffde1822f0b48b1753bf34aa97ce839df1d8"}, {"url": "https://git.kernel.org/stable/c/10f86a2a5c91fc4c4d001960f1c21abe52545ef6"}], "title": "bpf: Fix same-register dst/src OOB read and pointer leak in sock_ops", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-53078", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-10-16T15:25:20.096926Z"}}}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-125", "description": "CWE-125 Out-of-bounds Read"}]}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-19T19:47:15.752Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-53078", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-10-16T15:25:20.096926Z"}}}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-125", "description": "CWE-125 Out-of-bounds Read"}]}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-16T15:25:20.775Z"}}], "cna": {"title": "bpf: Fix same-register dst/src OOB read and pointer leak in sock_ops", "metrics": [{"cvssV3_1": {"version": "3.1", "baseScore": 7.8, "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}, "scenarios": [{"lang": "en", "value": "AV:L - Exploitation requires loading and attaching a crafted BPF_PROG_TYPE_SOCK_OPS program through the local bpf() interface. Remote TCP traffic can trigger an attached program, but cannot by itself create the malicious program.\nAC:L - The attacker controls the BPF bytecode pattern and can reliably trigger non-fullsock/request_sock sock_ops callbacks with local TCP activity. No uncontrolled race or rare runtime condition is required.\nPR:L - Loading/attaching sock_ops BPF requires BPF and net-admin style privileges, but these can be available to a local user through user-namespace/BPF-token delegation in plausible deployments. Under the required overestimate rule this is Low rather than High.\nUI:N - No victim action is needed after the attacker loads and attaches the crafted sock_ops program. The attacker can trigger the callback path directly.\nS:U - The impact is within the same kernel security authority. This is not a VM escape, IOMMU bypass, or cross-scope boundary violation.\nC:H - The bug leaks a kernel context pointer as a scalar and lets it be used as a bogus socket pointer. Helper dereferences can perform kernel stack out-of-bounds reads, so confidentiality impact is High.\nI:H - The bogus verifier-approved socket pointer can reach helpers that mutate socket-associated state, creating plausible kernel memory corruption from a misinterpreted stack object. With uncertainty required to resolve upward, integrity impact is High.\nA:H - The same bogus pointer path can cause kernel stack out-of-bounds accesses and invalid helper dereferences. These can crash or panic the kernel, so availability impact is High."}]}], "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "fd09af010788a884de1c39537c288830c3d305db", "lessThan": "db1200ec2c3ddf119d4d9ba67982063df06bbacb", "versionType": "git"}, {"status": "affected", "version": "fd09af010788a884de1c39537c288830c3d305db", "lessThan": "4c1c5efd9d1d74743d41ce4e1600501b4feb6827", "versionType": "git"}, {"status": "affected", "version": "fd09af010788a884de1c39537c288830c3d305db", "lessThan": "0e6b30657bbc771f38025c828d722b6162428508", "versionType": "git"}, {"status": "affected", "version": "fd09af010788a884de1c39537c288830c3d305db", "lessThan": "64eaf4ecda007140ddcdb28e00c48c9c69aaba39", "versionType": "git"}, {"status": "affected", "version": "fd09af010788a884de1c39537c288830c3d305db", "lessThan": "2a2c98141e0a75f2d4a7d78b0316c88b3da784ac", "versionType": "git"}, {"status": "affected", "version": "fd09af010788a884de1c39537c288830c3d305db", "lessThan": "22400725de070b787cd6d806c5795370ab46d269", "versionType": "git"}, {"status": "affected", "version": "fd09af010788a884de1c39537c288830c3d305db", "lessThan": "18e3ffde1822f0b48b1753bf34aa97ce839df1d8", "versionType": "git"}, {"status": "affected", "version": "fd09af010788a884de1c39537c288830c3d305db", "lessThan": "10f86a2a5c91fc4c4d001960f1c21abe52545ef6", "versionType": "git"}, {"status": "affected", "version": "48be3df15aa19c04eadf156c9129293c9a10389f", "versionType": "git"}, {"status": "affected", "version": "cd4644d904e1d153d516e73e2e127e7a2fe687e1", "versionType": "git"}, {"status": "affected", "version": "6e0bc946cbeec538322820786b5fb5200a2216ab", "versionType": "git"}, {"status": "affected", "version": "a7e52f7f675046d9ffc5692d815fa67c82fcdbf5", "versionType": "git"}, {"status": "affected", "version": "db7f8c57dbdd31f7e59f8dc8d1e1b38607a320ef", "versionType": "git"}, {"status": "affected", "version": "5.7.18", "lessThan": "5.8", "versionType": "semver"}, {"status": "affected", "version": "5.8.4", "lessThan": "5.9", "versionType": "semver"}, {"status": "affected", "version": "5.4.61", "lessThan": "5.5", "versionType": "semver"}], "programFiles": ["net/core/filter.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "5.9"}, {"status": "unaffected", "version": "0", "lessThan": "5.9", "versionType": "semver"}, {"status": "unaffected", "version": "5.10.270", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.221", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.188", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.157", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.101", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.42", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "7.0.10", "versionType": "semver", "lessThanOrEqual": "7.0.*"}, {"status": "unaffected", "version": "7.1", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["net/core/filter.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/db1200ec2c3ddf119d4d9ba67982063df06bbacb"}, {"url": "https://git.kernel.org/stable/c/4c1c5efd9d1d74743d41ce4e1600501b4feb6827"}, {"url": "https://git.kernel.org/stable/c/0e6b30657bbc771f38025c828d722b6162428508"}, {"url": "https://git.kernel.org/stable/c/64eaf4ecda007140ddcdb28e00c48c9c69aaba39"}, {"url": "https://git.kernel.org/stable/c/2a2c98141e0a75f2d4a7d78b0316c88b3da784ac"}, {"url": "https://git.kernel.org/stable/c/22400725de070b787cd6d806c5795370ab46d269"}, {"url": "https://git.kernel.org/stable/c/18e3ffde1822f0b48b1753bf34aa97ce839df1d8"}, {"url": "https://git.kernel.org/stable/c/10f86a2a5c91fc4c4d001960f1c21abe52545ef6"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Fix same-register dst/src OOB read and pointer leak in sock_ops\n\nWhen a BPF sock_ops program accesses ctx fields with dst_reg == src_reg,\nthe SOCK_OPS_GET_SK() and SOCK_OPS_GET_FIELD() macros fail to zero the\ndestination register in the !fullsock / !locked_tcp_sock path.\n\nBoth macros borrow a temporary register to check is_fullsock /\nis_locked_tcp_sock when dst_reg == src_reg, because dst_reg holds the\nctx pointer. When the check is false (e.g., TCP_NEW_SYN_RECV state with\na request_sock), dst_reg should be zeroed but is not, leaving the stale\nctx pointer:\n\n - SOCK_OPS_GET_SK: dst_reg retains the ctx pointer, passes NULL checks\n as PTR_TO_SOCKET_OR_NULL, and can be used as a bogus socket pointer,\n leading to stack-out-of-bounds access in helpers like\n bpf_skc_to_tcp6_sock().\n\n - SOCK_OPS_GET_FIELD: dst_reg retains the ctx pointer which the\n verifier believes is a SCALAR_VALUE, leaking a kernel pointer.\n\nFix both macros by:\n - Changing JMP_A(1) to JMP_A(2) in the fullsock path to skip the\n added instruction.\n - Adding BPF_MOV64_IMM(si->dst_reg, 0) after the temp register\n restore in the !fullsock path, placed after the restore because\n dst_reg == src_reg means we need src_reg intact to read ctx->temp."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.10.270", "versionStartIncluding": "5.9"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.221", "versionStartIncluding": "5.9"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1.188", "versionStartIncluding": "5.9"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6.157", "versionStartIncluding": "5.9"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.12.101", "versionStartIncluding": "5.9"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.18.42", "versionStartIncluding": "5.9"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.0.10", "versionStartIncluding": "5.9"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.1", "versionStartIncluding": "5.9"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionStartIncluding": "5.7.18"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionStartIncluding": "5.8.4"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionStartIncluding": "5.4.61"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionStartIncluding": "5.7.18"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionStartIncluding": "5.8.4"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-09-14T11:58:30.086Z"}}}, "cveMetadata": {"cveId": "CVE-2026-53078", "state": "PUBLISHED", "dateUpdated": "2026-10-19T19:47:15.752Z", "dateReserved": "2026-06-09T07:44:35.383Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2026-06-24T16:30:18.858Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

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"matchCriteriaId": "9B1AB90E-C0C6-4027-B27D-BA214BE33561", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.9:rc6:*:*:*:*:*:*", "matchCriteriaId": "103FE5BA-7315-4263-9C95-EABEAD7E174F", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.9:rc7:*:*:*:*:*:*", "matchCriteriaId": "47E31D6A-31EC-4F63-9CAE-B7A52B58E149", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.9:rc8:*:*:*:*:*:*", "matchCriteriaId": "3497462B-A3DA-47CC-A5DD-C1C2D2E6DFDE", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Fix same-register dst/src OOB read and pointer leak in sock_ops\n\nWhen a BPF sock_ops program accesses ctx fields with dst_reg == src_reg,\nthe SOCK_OPS_GET_SK() and SOCK_OPS_GET_FIELD() macros fail to zero the\ndestination register in the !fullsock / !locked_tcp_sock path.\n\nBoth macros borrow a temporary register to check is_fullsock /\nis_locked_tcp_sock when dst_reg == src_reg, because dst_reg holds the\nctx pointer. When the check is false (e.g., TCP_NEW_SYN_RECV state with\na request_sock), dst_reg should be zeroed but is not, leaving the stale\nctx pointer:\n\n - SOCK_OPS_GET_SK: dst_reg retains the ctx pointer, passes NULL checks\n as PTR_TO_SOCKET_OR_NULL, and can be used as a bogus socket pointer,\n leading to stack-out-of-bounds access in helpers like\n bpf_skc_to_tcp6_sock().\n\n - SOCK_OPS_GET_FIELD: dst_reg retains the ctx pointer which the\n verifier believes is a SCALAR_VALUE, leaking a kernel pointer.\n\nFix both macros by:\n - Changing JMP_A(1) to JMP_A(2) in the fullsock path to skip the\n added instruction.\n - Adding BPF_MOV64_IMM(si->dst_reg, 0) after the temp register\n restore in the !fullsock path, placed after the restore because\n dst_reg == src_reg means we need src_reg intact to read ctx->temp."}], "id": "CVE-2026-53078", "lastModified": "2026-10-19T20:19:00.553", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-53078", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-10-16T15:25:20.096926Z", "version": "2.0.3"}}]}, "published": "2026-06-24T17:17:21.850", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/0e6b30657bbc771f38025c828d722b6162428508"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/10f86a2a5c91fc4c4d001960f1c21abe52545ef6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/18e3ffde1822f0b48b1753bf34aa97ce839df1d8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/22400725de070b787cd6d806c5795370ab46d269"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/2a2c98141e0a75f2d4a7d78b0316c88b3da784ac"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/4c1c5efd9d1d74743d41ce4e1600501b4feb6827"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/64eaf4ecda007140ddcdb28e00c48c9c69aaba39"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/db1200ec2c3ddf119d4d9ba67982063df06bbacb"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-125"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-125"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"bugzilla": {"description": "kernel: bpf: Fix same-register dst/src OOB read and pointer leak in sock_ops", "id": "2492299", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2492299"}, "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"}, "cwe": "CWE-125", "details": ["A flaw was found in the Linux kernel's Berkeley Packet Filter (BPF) socket operations (sock_ops) program. When a BPF sock_ops program accesses context fields with the same destination and source registers, certain macros fail to properly clear the destination register. This can lead to a stack-out-of-bounds access, potentially allowing an attacker to execute arbitrary code or cause a denial of service. Additionally, it can result in a kernel pointer leak, disclosing sensitive information."], "name": "CVE-2026-53078", "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": "Out of support scope", "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": "2026-06-24T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-53078\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-53078\nhttps://lore.kernel.org/linux-cve-announce/2026062406-CVE-2026-53078-bc4a@gregkh/T"], "threat_severity": "Moderate"}

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