CVE-2025-38723

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The final generated assembly are\nas follow.\n\n54:\tbgeu \t$a2, $t1, -8\t # 0x0000004c\n58:\taddi.d \t$a6, $s5, -1\n5c:\tbltz \t$a6, -16\t # 0x0000004c\n60:\talsl.d \t$t2, $a2, $a1, 0x3\n64:\tld.d \t$t2, $t2, 264\n68:\tbeq \t$t2, $zero, -28\t # 0x0000004c\n\nBefore apply this patch, the follow test case will reveal soft lock issues.\n\ncd tools/testing/selftests/bpf/\n./test_progs --allow=tailcalls/tailcall_bpf2bpf_1\n\ndmesg:\nwatchdog: BUG: soft lockup - CPU#2 stuck for 26s! [test_progs:25056]"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["arch/loongarch/net/bpf_jit.c"], "versions": [{"version": "5dc615520c4dfb358245680f1904bad61116648e", "lessThan": "1a782fa32e644aa9fbae6c8488f3e61221ac96e1", "status": "affected", "versionType": "git"}, {"version": "5dc615520c4dfb358245680f1904bad61116648e", "lessThan": "17c010fe45def335fe03a0718935416b04c7f349", "status": "affected", "versionType": "git"}, {"version": "5dc615520c4dfb358245680f1904bad61116648e", "lessThan": "f83d469e16bb1f75991ca67c56786fb2aaa42bea", "status": "affected", "versionType": "git"}, {"version": "5dc615520c4dfb358245680f1904bad61116648e", "lessThan": "f2b5e50cc04d7a049b385bc1c93b9cbf5f10c94f", "status": "affected", "versionType": "git"}, {"version": "5dc615520c4dfb358245680f1904bad61116648e", "lessThan": "9262e3e04621558e875eb5afb5e726b648cd5949", "status": "affected", "versionType": "git"}, {"version": "5dc615520c4dfb358245680f1904bad61116648e", "lessThan": "cd39d9e6b7e4c58fa77783e7aedf7ada51d02ea3", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["arch/loongarch/net/bpf_jit.c"], "versions": [{"version": "6.1", "status": "affected"}, {"version": "0", "lessThan": "6.1", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.149", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.103", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.43", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.15.11", "lessThanOrEqual": "6.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.16.2", "lessThanOrEqual": "6.16.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.17", "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": "6.1", "versionEndExcluding": "6.1.149"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.1", "versionEndExcluding": "6.6.103"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.1", "versionEndExcluding": "6.12.43"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.1", "versionEndExcluding": "6.15.11"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.1", "versionEndExcluding": "6.16.2"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.1", "versionEndExcluding": "6.17"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/1a782fa32e644aa9fbae6c8488f3e61221ac96e1"}, {"url": "https://git.kernel.org/stable/c/17c010fe45def335fe03a0718935416b04c7f349"}, {"url": "https://git.kernel.org/stable/c/f83d469e16bb1f75991ca67c56786fb2aaa42bea"}, {"url": "https://git.kernel.org/stable/c/f2b5e50cc04d7a049b385bc1c93b9cbf5f10c94f"}, {"url": "https://git.kernel.org/stable/c/9262e3e04621558e875eb5afb5e726b648cd5949"}, {"url": "https://git.kernel.org/stable/c/cd39d9e6b7e4c58fa77783e7aedf7ada51d02ea3"}], "title": "LoongArch: BPF: Fix jump offset calculation in tailcall", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"title": "CVE Program Container", "references": [{"url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html"}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2025-11-03T17:41:51.527Z"}}, {"x_adpType": "supplier", "providerMetadata": {"orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "shortName": "siemens-SADP", "dateUpdated": "2026-05-12T12:05:52.998Z"}, "affected": [{"vendor": "Siemens", "product": "SIMATIC CN 4100", "versions": [{"status": "affected", "version": "0", "lessThan": "V5.0", "versionType": "custom"}], "defaultStatus": "unknown"}], "references": [{"url": "https://cert-portal.siemens.com/productcert/html/ssa-032379.html"}]}]}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["arch/loongarch/net/bpf_jit.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "1a782fa32e644aa9fbae6c8488f3e61221ac96e1", "status": "affected", "version": "5dc615520c4dfb358245680f1904bad61116648e", "versionType": "git"}, {"lessThan": "17c010fe45def335fe03a0718935416b04c7f349", "status": "affected", "version": "5dc615520c4dfb358245680f1904bad61116648e", "versionType": "git"}, {"lessThan": "f83d469e16bb1f75991ca67c56786fb2aaa42bea", "status": "affected", "version": "5dc615520c4dfb358245680f1904bad61116648e", "versionType": "git"}, {"lessThan": "f2b5e50cc04d7a049b385bc1c93b9cbf5f10c94f", "status": "affected", "version": "5dc615520c4dfb358245680f1904bad61116648e", "versionType": "git"}, {"lessThan": "9262e3e04621558e875eb5afb5e726b648cd5949", "status": "affected", "version": "5dc615520c4dfb358245680f1904bad61116648e", "versionType": "git"}, {"lessThan": "cd39d9e6b7e4c58fa77783e7aedf7ada51d02ea3", "status": "affected", "version": "5dc615520c4dfb358245680f1904bad61116648e", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["arch/loongarch/net/bpf_jit.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.1"}, {"lessThan": "6.1", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.149", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.103", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.43", "versionType": "semver"}, {"lessThanOrEqual": "6.15.*", "status": "unaffected", "version": "6.15.11", "versionType": "semver"}, {"lessThanOrEqual": "6.16.*", "status": "unaffected", "version": "6.16.2", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "6.17", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"affectedData": [{"defaultStatus": "unknown", "product": "SIMATIC CN 4100", "vendor": "Siemens", "versions": [{"lessThan": "V5.0", "status": "affected", "version": "0", "versionType": "custom"}]}], "source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "0C9B5F1A-9644-4E1A-B1E8-A0A2EE50EFC1", "versionEndExcluding": "6.1.149", "versionStartIncluding": "6.1", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "F2293654-7169-49B5-8D0D-EE51EF8B8E48", "versionEndExcluding": "6.6.103", "versionStartIncluding": "6.2", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "472C5F87-2BF3-4FAB-9B21-DA7513977363", "versionEndExcluding": "6.12.43", "versionStartIncluding": "6.7", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "BC242347-F722-43AE-B910-BE0B22386977", "versionEndExcluding": "6.15.11", "versionStartIncluding": "6.13", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "BD7C087D-2415-4521-B624-30003352F899", "versionEndExcluding": "6.16.2", "versionStartIncluding": "6.16", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*", "matchCriteriaId": "FA6FEEC2-9F11-4643-8827-749718254FED", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nLoongArch: BPF: Fix jump offset calculation in tailcall\n\nThe extra pass of bpf_int_jit_compile() skips JIT context initialization\nwhich essentially skips offset calculation leaving out_offset = -1, so\nthe jmp_offset in emit_bpf_tail_call is calculated by\n\n\"#define jmp_offset (out_offset - (cur_offset))\"\n\nis a negative number, which is wrong. The final generated assembly are\nas follow.\n\n54:\tbgeu \t$a2, $t1, -8\t # 0x0000004c\n58:\taddi.d \t$a6, $s5, -1\n5c:\tbltz \t$a6, -16\t # 0x0000004c\n60:\talsl.d \t$t2, $a2, $a1, 0x3\n64:\tld.d \t$t2, $t2, 264\n68:\tbeq \t$t2, $zero, -28\t # 0x0000004c\n\nBefore apply this patch, the follow test case will reveal soft lock issues.\n\ncd tools/testing/selftests/bpf/\n./test_progs --allow=tailcalls/tailcall_bpf2bpf_1\n\ndmesg:\nwatchdog: BUG: soft lockup - CPU#2 stuck for 26s! [test_progs:25056]"}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nLoongArch: BPF: Correcci\u00f3n del c\u00e1lculo del desplazamiento de salto en tailcall\n\nLa pasada extra de bpf_int_jit_compile() omite la inicializaci\u00f3n del contexto JIT, lo que esencialmente omite el c\u00e1lculo del desplazamiento dejando out_offset = -1, por lo que el jmp_offset en emit_bpf_tail_call se calcula mediante\n\n'#define jmp_offset (out_offset - (cur_offset))'\n\nes un n\u00famero negativo, lo cual es incorrecto. El ensamblado final generado es el siguiente.\n\n54:\tbgeu \t$a2, $t1, -8\t # 0x0000004c\n58:\taddi.d \t$a6, $s5, -1\n5c:\tbltz \t$a6, -16\t # 0x0000004c\n60:\talsl.d \t$t2, $a2, $a1, 0x3\n64:\tld.d \t$t2, $t2, 264\n68:\tbeq \t$t2, $zero, -28\t # 0x0000004c\n\nAntes de aplicar este parche, el siguiente caso de prueba revelar\u00e1 problemas de bloqueo suave.\n\ncd tools/testing/selftests/bpf/\n./test_progs --allow=tailcalls/tailcall_bpf2bpf_1\n\ndmesg:\nwatchdog: BUG: bloqueo suave - CPU#2 atascada durante 26s! [test_progs:25056]"}], "id": "CVE-2025-38723", "lastModified": "2026-10-19T21:10:00.160", "metrics": {"cvssMetricV31": [{"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"}]}, "published": "2025-09-04T16:15:42.130", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/17c010fe45def335fe03a0718935416b04c7f349"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/1a782fa32e644aa9fbae6c8488f3e61221ac96e1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/9262e3e04621558e875eb5afb5e726b648cd5949"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/cd39d9e6b7e4c58fa77783e7aedf7ada51d02ea3"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/f2b5e50cc04d7a049b385bc1c93b9cbf5f10c94f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/f83d469e16bb1f75991ca67c56786fb2aaa42bea"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html"}, {"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "url": "https://cert-portal.siemens.com/productcert/html/ssa-032379.html"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: LoongArch: BPF: Fix jump offset calculation in tailcall", "id": "2393160", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2393160"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "details": ["No description is available for this CVE."], "name": "CVE-2025-38723", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "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": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-09-04T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-38723\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-38723\nhttps://lore.kernel.org/linux-cve-announce/2025090401-CVE-2025-38723-18f0@gregkh/T"], "threat_severity": "Moderate"}

{"created": "2025-09-05T14:02:32.222977+00:00", "updated": "2025-09-05T14:02:32.223031+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}