CVE-2025-38539

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2025-38539", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-04-16T04:51:24.024Z", "datePublished": "2025-08-16T11:12:31.678Z", "dateUpdated": "2026-10-15T21:52:19.010Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:02:45.638Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntracing: Add down_write(trace_event_sem) when adding trace event\n\nWhen a module is loaded, it adds trace events defined by the module. It\nmay also need to modify the modules trace printk formats to replace enum\nnames with their values.\n\nIf two modules are loaded at the same time, the adding of the event to the\nftrace_events list can corrupt the walking of the list in the code that is\nmodifying the printk format strings and crash the kernel.\n\nThe addition of the event should take the trace_event_sem for write while\nit adds the new event.\n\nAlso add a lockdep_assert_held() on that semaphore in\n__trace_add_event_dirs() as it iterates the list."}], "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 - The race is driven entirely through local operations \u2014 module load (init_module/finit_module or attacker-triggered autoload via socket()) and tracefs dynamic-event registration. No network or adjacent-network input reaches kernel/trace/trace_events.c.\nAC:L - The attacker controls both sides of the race, initiating the list-walking module load and the list-adding module load concurrently, and `trace_event_eval_update()` calls `cond_resched()` on every iteration over a list of thousands of events, making the preemption window very wide and the race practically winnable. Per race-condition guidance, attacker-created races are Low.\nPR:L - Both sides of the race are reachable by an unprivileged local user via kernel module autoloading (e.g. concurrent `socket(AF_RXRPC,\u2026)` loading rxrpc, whose TRACE_DEFINE_ENUM maps drive the unlocked walk, and `socket(AF_INET,SOCK_STREAM,IPPROTO_SCTP)` loading sctp, whose trace events drive the unlocked list_add), and containers granted CAP_SYS_MODULE can trigger it repeatably. No authentication beyond an ordinary local account is required.\nUI:N - The attacker triggers both concurrent module loads themselves; no victim action, mount, or file open by another user is needed.\nS:U - The corruption and its consequences are confined to kernel memory within the same security authority; no hypervisor, IOMMU, or sandbox boundary is crossed.\nC:H - Following a torn list pointer, the walker dereferences an arbitrary `struct trace_event_call`, reading `call->print_fmt` and traversing `call->class->fields` from wild addresses, and the resulting strings are persisted into `field->type`/`print_fmt` which are readable through `/sys/kernel/tracing/events/*/format`, giving kernel memory disclosure.\nI:H - `eval_replace()` performs in-place `snprintf`/`memmove` writes through the wild `call->print_fmt` pointer and `update_event_fields()` stores `field->type = str`, yielding out-of-bounds writes; additionally `call->module` is assigned after the unlocked list_add, so a racing walker can attach strings to a stale module pointer that a later unload frees, producing a use-after-free suitable for control-flow hijacking.\nA:H - The commit states outright that the unsynchronized list_add \"can corrupt the walking of the list ... and crash the kernel\"; the reported failure is a kernel oops/panic, and dereferencing a stale next pointer reliably faults."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["kernel/trace/trace_events.c"], "versions": [{"version": "110bf2b764eb6026b868d84499263cb24b1bcc8d", "lessThan": "e70f5ee4c8824736332351b703c46f9469ed7f6c", "status": "affected", "versionType": "git"}, {"version": "110bf2b764eb6026b868d84499263cb24b1bcc8d", "lessThan": "db45632479ceecb669612ed8dbce927e3c6279fc", "status": "affected", "versionType": "git"}, {"version": "110bf2b764eb6026b868d84499263cb24b1bcc8d", "lessThan": "ca60064ea03f14e06c763de018403cb56ba3207d", "status": "affected", "versionType": "git"}, {"version": "110bf2b764eb6026b868d84499263cb24b1bcc8d", "lessThan": "7803b28c9aa8d8bd4e19ebcf5f0db9612b0f333b", "status": "affected", "versionType": "git"}, {"version": "110bf2b764eb6026b868d84499263cb24b1bcc8d", "lessThan": "6bc94f20a4c304997288f9a45278c9d0c06987d3", "status": "affected", "versionType": "git"}, {"version": "110bf2b764eb6026b868d84499263cb24b1bcc8d", "lessThan": "33e20747b47ddc03569b6bc27a2d6894c1428182", "status": "affected", "versionType": "git"}, {"version": "110bf2b764eb6026b868d84499263cb24b1bcc8d", "lessThan": "70fecd519caad0c1741c3379d5348c9000a5b29d", "status": "affected", "versionType": "git"}, {"version": "110bf2b764eb6026b868d84499263cb24b1bcc8d", "lessThan": "b5e8acc14dcb314a9b61ff19dcd9fdd0d88f70df", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": 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"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": "2.6.31", "versionEndExcluding": "5.4.297"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.31", "versionEndExcluding": "5.10.241"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.31", "versionEndExcluding": "5.15.190"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.31", "versionEndExcluding": "6.1.147"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.31", "versionEndExcluding": "6.6.100"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.31", "versionEndExcluding": "6.12.40"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.31", "versionEndExcluding": "6.15.8"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.31", "versionEndExcluding": "6.16"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/e70f5ee4c8824736332351b703c46f9469ed7f6c"}, {"url": "https://git.kernel.org/stable/c/db45632479ceecb669612ed8dbce927e3c6279fc"}, {"url": "https://git.kernel.org/stable/c/ca60064ea03f14e06c763de018403cb56ba3207d"}, {"url": "https://git.kernel.org/stable/c/7803b28c9aa8d8bd4e19ebcf5f0db9612b0f333b"}, {"url": "https://git.kernel.org/stable/c/6bc94f20a4c304997288f9a45278c9d0c06987d3"}, {"url": "https://git.kernel.org/stable/c/33e20747b47ddc03569b6bc27a2d6894c1428182"}, {"url": "https://git.kernel.org/stable/c/70fecd519caad0c1741c3379d5348c9000a5b29d"}, {"url": "https://git.kernel.org/stable/c/b5e8acc14dcb314a9b61ff19dcd9fdd0d88f70df"}], "title": "tracing: Add down_write(trace_event_sem) when adding trace event", "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"}, {"url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html"}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2025-11-03T17:39:34.419Z"}}, {"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2025-38539", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-10-15T21:51:33.206404Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-15T21:52:19.010Z"}}]}}

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No network or adjacent-network input reaches kernel/trace/trace_events.c.\nAC:L - The attacker controls both sides of the race, initiating the list-walking module load and the list-adding module load concurrently, and `trace_event_eval_update()` calls `cond_resched()` on every iteration over a list of thousands of events, making the preemption window very wide and the race practically winnable. Per race-condition guidance, attacker-created races are Low.\nPR:L - Both sides of the race are reachable by an unprivileged local user via kernel module autoloading (e.g. concurrent `socket(AF_RXRPC,\u2026)` loading rxrpc, whose TRACE_DEFINE_ENUM maps drive the unlocked walk, and `socket(AF_INET,SOCK_STREAM,IPPROTO_SCTP)` loading sctp, whose trace events drive the unlocked list_add), and containers granted CAP_SYS_MODULE can trigger it repeatably. No authentication beyond an ordinary local account is required.\nUI:N - The attacker triggers both concurrent module loads themselves; no victim action, mount, or file open by another user is needed.\nS:U - The corruption and its consequences are confined to kernel memory within the same security authority; no hypervisor, IOMMU, or sandbox boundary is crossed.\nC:H - Following a torn list pointer, the walker dereferences an arbitrary `struct trace_event_call`, reading `call->print_fmt` and traversing `call->class->fields` from wild addresses, and the resulting strings are persisted into `field->type`/`print_fmt` which are readable through `/sys/kernel/tracing/events/*/format`, giving kernel memory disclosure.\nI:H - `eval_replace()` performs in-place `snprintf`/`memmove` writes through the wild `call->print_fmt` pointer and `update_event_fields()` stores `field->type = str`, yielding out-of-bounds writes; additionally `call->module` is assigned after the unlocked list_add, so a racing walker can attach strings to a stale module pointer that a later unload frees, producing a use-after-free suitable for control-flow hijacking.\nA:H - The commit states outright that the unsynchronized list_add \"can corrupt the walking of the list ... and crash the kernel\"; the reported failure is a kernel oops/panic, and dereferencing a stale next pointer reliably faults."}]}], "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "110bf2b764eb6026b868d84499263cb24b1bcc8d", "lessThan": "e70f5ee4c8824736332351b703c46f9469ed7f6c", "versionType": "git"}, {"status": "affected", "version": "110bf2b764eb6026b868d84499263cb24b1bcc8d", "lessThan": "db45632479ceecb669612ed8dbce927e3c6279fc", "versionType": "git"}, {"status": "affected", "version": "110bf2b764eb6026b868d84499263cb24b1bcc8d", "lessThan": "ca60064ea03f14e06c763de018403cb56ba3207d", "versionType": "git"}, {"status": "affected", "version": "110bf2b764eb6026b868d84499263cb24b1bcc8d", "lessThan": "7803b28c9aa8d8bd4e19ebcf5f0db9612b0f333b", "versionType": "git"}, {"status": "affected", "version": "110bf2b764eb6026b868d84499263cb24b1bcc8d", "lessThan": "6bc94f20a4c304997288f9a45278c9d0c06987d3", "versionType": "git"}, {"status": "affected", "version": "110bf2b764eb6026b868d84499263cb24b1bcc8d", "lessThan": "33e20747b47ddc03569b6bc27a2d6894c1428182", "versionType": "git"}, {"status": "affected", "version": "110bf2b764eb6026b868d84499263cb24b1bcc8d", "lessThan": "70fecd519caad0c1741c3379d5348c9000a5b29d", "versionType": "git"}, {"status": "affected", "version": "110bf2b764eb6026b868d84499263cb24b1bcc8d", "lessThan": "b5e8acc14dcb314a9b61ff19dcd9fdd0d88f70df", "versionType": "git"}], "programFiles": ["kernel/trace/trace_events.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "2.6.31"}, {"status": "unaffected", "version": "0", "lessThan": "2.6.31", "versionType": "semver"}, {"status": "unaffected", "version": "5.4.297", "versionType": "semver", "lessThanOrEqual": "5.4.*"}, {"status": "unaffected", "version": "5.10.241", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.190", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.147", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.100", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.40", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.15.8", "versionType": "semver", "lessThanOrEqual": "6.15.*"}, {"status": "unaffected", "version": "6.16", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["kernel/trace/trace_events.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/e70f5ee4c8824736332351b703c46f9469ed7f6c"}, {"url": "https://git.kernel.org/stable/c/db45632479ceecb669612ed8dbce927e3c6279fc"}, {"url": "https://git.kernel.org/stable/c/ca60064ea03f14e06c763de018403cb56ba3207d"}, {"url": "https://git.kernel.org/stable/c/7803b28c9aa8d8bd4e19ebcf5f0db9612b0f333b"}, {"url": "https://git.kernel.org/stable/c/6bc94f20a4c304997288f9a45278c9d0c06987d3"}, {"url": "https://git.kernel.org/stable/c/33e20747b47ddc03569b6bc27a2d6894c1428182"}, {"url": "https://git.kernel.org/stable/c/70fecd519caad0c1741c3379d5348c9000a5b29d"}, {"url": "https://git.kernel.org/stable/c/b5e8acc14dcb314a9b61ff19dcd9fdd0d88f70df"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntracing: Add down_write(trace_event_sem) when adding trace event\n\nWhen a module is loaded, it adds trace events defined by the module. It\nmay also need to modify the modules trace printk formats to replace enum\nnames with their values.\n\nIf two modules are loaded at the same time, the adding of the event to the\nftrace_events list can corrupt the walking of the list in the code that is\nmodifying the printk format strings and crash the kernel.\n\nThe addition of the event should take the trace_event_sem for write while\nit adds the new event.\n\nAlso add a lockdep_assert_held() on that semaphore in\n__trace_add_event_dirs() as it iterates the list."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.4.297", "versionStartIncluding": "2.6.31"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.10.241", "versionStartIncluding": "2.6.31"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.190", "versionStartIncluding": "2.6.31"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1.147", "versionStartIncluding": "2.6.31"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6.100", "versionStartIncluding": "2.6.31"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.12.40", "versionStartIncluding": "2.6.31"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.15.8", "versionStartIncluding": "2.6.31"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.16", "versionStartIncluding": "2.6.31"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:02:45.638Z"}}}, "cveMetadata": {"cveId": "CVE-2025-38539", "state": "PUBLISHED", "dateUpdated": "2026-10-15T21:52:19.010Z", "dateReserved": "2025-04-16T04:51:24.024Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2025-08-16T11:12:31.678Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

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"85421F4E-C863-4ABF-B4B4-E887CC2F7F92", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.16:rc6:*:*:*:*:*:*", "matchCriteriaId": "3827F0D4-5FEE-4181-B267-5A45E7CA11FC", "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\ntracing: Add down_write(trace_event_sem) when adding trace event\n\nWhen a module is loaded, it adds trace events defined by the module. It\nmay also need to modify the modules trace printk formats to replace enum\nnames with their values.\n\nIf two modules are loaded at the same time, the adding of the event to the\nftrace_events list can corrupt the walking of the list in the code that is\nmodifying the printk format strings and crash the kernel.\n\nThe addition of the event should take the trace_event_sem for write while\nit adds the new event.\n\nAlso add a lockdep_assert_held() on that semaphore in\n__trace_add_event_dirs() as it iterates the list."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: rastreo: Agregar down_write(trace_event_sem) al agregar un evento de rastreo Cuando se carga un m\u00f3dulo, agrega eventos de rastreo definidos por el m\u00f3dulo. Tambi\u00e9n puede necesitar modificar los formatos printk de rastreo de los m\u00f3dulos para reemplazar los nombres de enumeraci\u00f3n con sus valores. Si se cargan dos m\u00f3dulos al mismo tiempo, agregar el evento a la lista ftrace_events puede corromper el recorrido de la lista en el c\u00f3digo que modifica las cadenas de formato printk y bloquear el kernel. La adici\u00f3n del evento debe tomar trace_event_sem para escritura mientras agrega el nuevo evento. Tambi\u00e9n agregue un lockdep_assert_held() en ese sem\u00e1foro en __trace_add_event_dirs() mientras itera la lista."}], "id": "CVE-2025-38539", "lastModified": "2026-10-15T22:18:45.043", "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"}, {"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-2025-38539", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-10-15T21:51:33.206404Z", "version": "2.0.3"}}]}, "published": "2025-08-16T12:15:29.717", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/33e20747b47ddc03569b6bc27a2d6894c1428182"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/6bc94f20a4c304997288f9a45278c9d0c06987d3"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/70fecd519caad0c1741c3379d5348c9000a5b29d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/7803b28c9aa8d8bd4e19ebcf5f0db9612b0f333b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/b5e8acc14dcb314a9b61ff19dcd9fdd0d88f70df"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/ca60064ea03f14e06c763de018403cb56ba3207d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/db45632479ceecb669612ed8dbce927e3c6279fc"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e70f5ee4c8824736332351b703c46f9469ed7f6c"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.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: tracing: Add down_write(trace_event_sem) when adding trace event", "id": "2388919", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2388919"}, "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": ["In the Linux kernel, the following vulnerability has been resolved:\ntracing: Add down_write(trace_event_sem) when adding trace event\nWhen a module is loaded, it adds trace events defined by the module. It\nmay also need to modify the modules trace printk formats to replace enum\nnames with their values.\nIf two modules are loaded at the same time, the adding of the event to the\nftrace_events list can corrupt the walking of the list in the code that is\nmodifying the printk format strings and crash the kernel.\nThe addition of the event should take the trace_event_sem for write while\nit adds the new event.\nAlso add a lockdep_assert_held() on that semaphore in\n__trace_add_event_dirs() as it iterates the list."], "name": "CVE-2025-38539", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "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": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-08-16T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-38539\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-38539\nhttps://lore.kernel.org/linux-cve-announce/2025081657-CVE-2025-38539-fdcd@gregkh/T"], "threat_severity": "Moderate"}

{"created": "2025-08-18T20:50:05.678004+00:00", "updated": "2025-08-18T20:50:05.678069+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}