CVE-2025-38424

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2025-38424", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-04-16T04:51:24.014Z", "datePublished": "2025-07-25T14:16:44.846Z", "dateUpdated": "2026-10-15T21:52:15.805Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:01:47.114Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nperf: Fix sample vs do_exit()\n\nBaisheng Gao reported an ARM64 crash, which Mark decoded as being a\nsynchronous external abort -- most likely due to trying to access\nMMIO in bad ways.\n\nThe crash further shows perf trying to do a user stack sample while in\nexit_mmap()'s tlb_finish_mmu() -- i.e. while tearing down the address\nspace it is trying to access.\n\nIt turns out that we stop perf after we tear down the userspace mm; a\nreceipie for disaster, since perf likes to access userspace for\nvarious reasons.\n\nFlip this order by moving up where we stop perf in do_exit().\n\nAdditionally, harden PERF_SAMPLE_CALLCHAIN and PERF_SAMPLE_STACK_USER\nto abort when the current task does not have an mm (exit_mm() makes\nsure to set current->mm = NULL; before commencing with the actual\nteardown). Such that CPU wide events don't trip on this same problem."}], "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 vulnerability is reached through the `perf_event_open(2)` syscall creating a sampling event with `PERF_SAMPLE_STACK_USER`/`PERF_SAMPLE_CALLCHAIN`, plus a normal task exit. No network or physical component is involved.\nAC:L - The attacker controls both sides of the race \u2014 it creates the sampling event, chooses when the task calls `exit_group()`, and can widen the `exit_mmap()` window arbitrarily by mapping a large address space with many VMAs; failed attempts are free and can be repeated thousands of times per second via forked children with `attr.inherit=1`.\nPR:L - An ordinary unprivileged user can do this at the upstream default `perf_event_paranoid=2` \u2014 `PERF_SAMPLE_STACK_USER`/`PERF_SAMPLE_CALLCHAIN` have no capability gate, per-task events on one's own tasks need only `ptrace_may_access`, and `exclude_kernel=1` samples that skid into kernel mode are deliberately not dropped (revert 6a8a75f32357; `sample_is_allowed()` only guards `sigtrap`). On the widely deployed `perf_event_paranoid<=1` systems it is fully deterministic with software clock events.\nUI:N - The attacker triggers everything from its own processes \u2014 open the event, exit the task. No victim action, no privileged profiler, and no administrator involvement is required.\nS:U - The unsafe access and its consequences are contained within the kernel's own security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - `__copy_from_user_inatomic()`/`__get_user()` read through an mm whose data pages and page-table pages have already been freed and can be reallocated, and the harvested bytes are written verbatim into the attacker-readable perf ring buffer \u2014 a use-after-free read that can disclose freed/reused memory or, via a walk through a recycled page-table page, effectively arbitrary physical memory.\nI:H - The use-after-free on the page tables makes the CPU issue accesses to attacker-groomable, arbitrary physical addresses; per UAF scoring guidance this is High, and it is concretely damaging because the reported case lands on MMIO, where reads carry side effects (read-to-clear status, FIFO pops) that corrupt device and system state.\nA:H - The reported failure is a fatal kernel abort \u2014 on arm64 `do_sea()` routes the synchronous external abort to `arm64_notify_die()` with `SIGKILL/SI_KERNEL`, which in kernel mode is an unrecoverable oops/panic; the attacker can trigger it repeatedly, giving a reliable full system DoS."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["kernel/events/core.c", "kernel/exit.c"], "versions": [{"version": "c5ebcedb566ef17bda7b02686e0d658a7bb42ee7", "lessThan": "7b8f3c72175c6a63a95cf2e219f8b78e2baad34e", "status": "affected", "versionType": "git"}, {"version": "c5ebcedb566ef17bda7b02686e0d658a7bb42ee7", "lessThan": "507c9a595bad3abd107c6a8857d7fd125d89f386", "status": "affected", "versionType": "git"}, {"version": "c5ebcedb566ef17bda7b02686e0d658a7bb42ee7", "lessThan": "a9f6aab7910a0ef2895797f15c947f6d1053160f", "status": "affected", "versionType": "git"}, {"version": "c5ebcedb566ef17bda7b02686e0d658a7bb42ee7", "lessThan": "975ffddfa2e19823c719459d2364fcaa17673964", "status": "affected", "versionType": "git"}, {"version": "c5ebcedb566ef17bda7b02686e0d658a7bb42ee7", "lessThan": "2ee6044a693735396bb47eeaba1ac3ae26c1c99b", "status": "affected", "versionType": "git"}, {"version": "c5ebcedb566ef17bda7b02686e0d658a7bb42ee7", "lessThan": "456019adaa2f5366b89c868dea9b483179bece54", "status": "affected", "versionType": "git"}, {"version": "c5ebcedb566ef17bda7b02686e0d658a7bb42ee7", "lessThan": "7311970d07c4606362081250da95f2c7901fc0db", "status": "affected", "versionType": "git"}, {"version": "c5ebcedb566ef17bda7b02686e0d658a7bb42ee7", "lessThan": "4f6fc782128355931527cefe3eb45338abd8ab39", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["kernel/events/core.c", "kernel/exit.c"], "versions": 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"OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.7", "versionEndExcluding": "5.4.295"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.7", "versionEndExcluding": "5.10.239"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.7", "versionEndExcluding": "5.15.186"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.7", "versionEndExcluding": "6.1.142"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.7", "versionEndExcluding": "6.6.95"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.7", "versionEndExcluding": "6.12.35"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.7", "versionEndExcluding": "6.15.4"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.7", "versionEndExcluding": "6.16"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/7b8f3c72175c6a63a95cf2e219f8b78e2baad34e"}, {"url": "https://git.kernel.org/stable/c/507c9a595bad3abd107c6a8857d7fd125d89f386"}, {"url": "https://git.kernel.org/stable/c/a9f6aab7910a0ef2895797f15c947f6d1053160f"}, {"url": "https://git.kernel.org/stable/c/975ffddfa2e19823c719459d2364fcaa17673964"}, {"url": "https://git.kernel.org/stable/c/2ee6044a693735396bb47eeaba1ac3ae26c1c99b"}, {"url": "https://git.kernel.org/stable/c/456019adaa2f5366b89c868dea9b483179bece54"}, {"url": "https://git.kernel.org/stable/c/7311970d07c4606362081250da95f2c7901fc0db"}, {"url": "https://git.kernel.org/stable/c/4f6fc782128355931527cefe3eb45338abd8ab39"}], "title": "perf: Fix sample vs do_exit()", "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": "2025-11-03T17:37:54.380Z"}}, {"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2025-38424", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-10-15T21:50:16.738401Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-15T21:52:15.805Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"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": "2025-11-03T17:37:54.380Z"}}, {"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2025-38424", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-10-15T21:50:16.738401Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-15T21:50:17.795Z"}}], "cna": {"title": "perf: Fix sample vs do_exit()", "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 - The vulnerability is reached through the `perf_event_open(2)` syscall creating a sampling event with `PERF_SAMPLE_STACK_USER`/`PERF_SAMPLE_CALLCHAIN`, plus a normal task exit. No network or physical component is involved.\nAC:L - The attacker controls both sides of the race \u2014 it creates the sampling event, chooses when the task calls `exit_group()`, and can widen the `exit_mmap()` window arbitrarily by mapping a large address space with many VMAs; failed attempts are free and can be repeated thousands of times per second via forked children with `attr.inherit=1`.\nPR:L - An ordinary unprivileged user can do this at the upstream default `perf_event_paranoid=2` \u2014 `PERF_SAMPLE_STACK_USER`/`PERF_SAMPLE_CALLCHAIN` have no capability gate, per-task events on one's own tasks need only `ptrace_may_access`, and `exclude_kernel=1` samples that skid into kernel mode are deliberately not dropped (revert 6a8a75f32357; `sample_is_allowed()` only guards `sigtrap`). On the widely deployed `perf_event_paranoid<=1` systems it is fully deterministic with software clock events.\nUI:N - The attacker triggers everything from its own processes \u2014 open the event, exit the task. No victim action, no privileged profiler, and no administrator involvement is required.\nS:U - The unsafe access and its consequences are contained within the kernel's own security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - `__copy_from_user_inatomic()`/`__get_user()` read through an mm whose data pages and page-table pages have already been freed and can be reallocated, and the harvested bytes are written verbatim into the attacker-readable perf ring buffer \u2014 a use-after-free read that can disclose freed/reused memory or, via a walk through a recycled page-table page, effectively arbitrary physical memory.\nI:H - The use-after-free on the page tables makes the CPU issue accesses to attacker-groomable, arbitrary physical addresses; per UAF scoring guidance this is High, and it is concretely damaging because the reported case lands on MMIO, where reads carry side effects (read-to-clear status, FIFO pops) that corrupt device and system state.\nA:H - The reported failure is a fatal kernel abort \u2014 on arm64 `do_sea()` routes the synchronous external abort to `arm64_notify_die()` with `SIGKILL/SI_KERNEL`, which in kernel mode is an unrecoverable oops/panic; the attacker can trigger it repeatedly, giving a reliable full system DoS."}]}], "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "c5ebcedb566ef17bda7b02686e0d658a7bb42ee7", "lessThan": "7b8f3c72175c6a63a95cf2e219f8b78e2baad34e", "versionType": "git"}, {"status": "affected", "version": "c5ebcedb566ef17bda7b02686e0d658a7bb42ee7", "lessThan": "507c9a595bad3abd107c6a8857d7fd125d89f386", "versionType": "git"}, {"status": "affected", "version": "c5ebcedb566ef17bda7b02686e0d658a7bb42ee7", "lessThan": "a9f6aab7910a0ef2895797f15c947f6d1053160f", "versionType": "git"}, {"status": "affected", "version": "c5ebcedb566ef17bda7b02686e0d658a7bb42ee7", "lessThan": "975ffddfa2e19823c719459d2364fcaa17673964", "versionType": "git"}, {"status": "affected", "version": "c5ebcedb566ef17bda7b02686e0d658a7bb42ee7", "lessThan": "2ee6044a693735396bb47eeaba1ac3ae26c1c99b", "versionType": "git"}, {"status": "affected", "version": "c5ebcedb566ef17bda7b02686e0d658a7bb42ee7", "lessThan": "456019adaa2f5366b89c868dea9b483179bece54", "versionType": "git"}, {"status": "affected", "version": "c5ebcedb566ef17bda7b02686e0d658a7bb42ee7", "lessThan": "7311970d07c4606362081250da95f2c7901fc0db", "versionType": "git"}, {"status": "affected", "version": "c5ebcedb566ef17bda7b02686e0d658a7bb42ee7", "lessThan": "4f6fc782128355931527cefe3eb45338abd8ab39", "versionType": "git"}], "programFiles": ["kernel/events/core.c", "kernel/exit.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "3.7"}, {"status": "unaffected", "version": "0", "lessThan": "3.7", "versionType": "semver"}, {"status": "unaffected", "version": "5.4.295", "versionType": "semver", "lessThanOrEqual": "5.4.*"}, {"status": "unaffected", "version": "5.10.239", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.186", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.142", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.95", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.35", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.15.4", "versionType": "semver", "lessThanOrEqual": "6.15.*"}, {"status": "unaffected", "version": "6.16", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["kernel/events/core.c", "kernel/exit.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/7b8f3c72175c6a63a95cf2e219f8b78e2baad34e"}, {"url": "https://git.kernel.org/stable/c/507c9a595bad3abd107c6a8857d7fd125d89f386"}, {"url": "https://git.kernel.org/stable/c/a9f6aab7910a0ef2895797f15c947f6d1053160f"}, {"url": "https://git.kernel.org/stable/c/975ffddfa2e19823c719459d2364fcaa17673964"}, {"url": "https://git.kernel.org/stable/c/2ee6044a693735396bb47eeaba1ac3ae26c1c99b"}, {"url": "https://git.kernel.org/stable/c/456019adaa2f5366b89c868dea9b483179bece54"}, {"url": "https://git.kernel.org/stable/c/7311970d07c4606362081250da95f2c7901fc0db"}, {"url": "https://git.kernel.org/stable/c/4f6fc782128355931527cefe3eb45338abd8ab39"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nperf: Fix sample vs do_exit()\n\nBaisheng Gao reported an ARM64 crash, which Mark decoded as being a\nsynchronous external abort -- most likely due to trying to access\nMMIO in bad ways.\n\nThe crash further shows perf trying to do a user stack sample while in\nexit_mmap()'s tlb_finish_mmu() -- i.e. while tearing down the address\nspace it is trying to access.\n\nIt turns out that we stop perf after we tear down the userspace mm; a\nreceipie for disaster, since perf likes to access userspace for\nvarious reasons.\n\nFlip this order by moving up where we stop perf in do_exit().\n\nAdditionally, harden PERF_SAMPLE_CALLCHAIN and PERF_SAMPLE_STACK_USER\nto abort when the current task does not have an mm (exit_mm() makes\nsure to set current->mm = NULL; before commencing with the actual\nteardown). Such that CPU wide events don't trip on this same problem."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.4.295", "versionStartIncluding": "3.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.10.239", "versionStartIncluding": "3.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.186", "versionStartIncluding": "3.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1.142", "versionStartIncluding": "3.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6.95", "versionStartIncluding": "3.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.12.35", "versionStartIncluding": "3.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.15.4", "versionStartIncluding": "3.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.16", "versionStartIncluding": "3.7"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:01:47.114Z"}}}, "cveMetadata": {"cveId": "CVE-2025-38424", "state": "PUBLISHED", "dateUpdated": "2026-10-15T21:52:15.805Z", "dateReserved": "2025-04-16T04:51:24.014Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2025-07-25T14:16:44.846Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["kernel/events/core.c", "kernel/exit.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "7b8f3c72175c6a63a95cf2e219f8b78e2baad34e", "status": "affected", "version": "c5ebcedb566ef17bda7b02686e0d658a7bb42ee7", "versionType": "git"}, {"lessThan": "507c9a595bad3abd107c6a8857d7fd125d89f386", "status": "affected", "version": "c5ebcedb566ef17bda7b02686e0d658a7bb42ee7", "versionType": "git"}, {"lessThan": "a9f6aab7910a0ef2895797f15c947f6d1053160f", "status": "affected", "version": "c5ebcedb566ef17bda7b02686e0d658a7bb42ee7", "versionType": "git"}, {"lessThan": "975ffddfa2e19823c719459d2364fcaa17673964", "status": "affected", "version": "c5ebcedb566ef17bda7b02686e0d658a7bb42ee7", "versionType": "git"}, {"lessThan": "2ee6044a693735396bb47eeaba1ac3ae26c1c99b", "status": "affected", "version": "c5ebcedb566ef17bda7b02686e0d658a7bb42ee7", "versionType": "git"}, {"lessThan": "456019adaa2f5366b89c868dea9b483179bece54", "status": "affected", "version": "c5ebcedb566ef17bda7b02686e0d658a7bb42ee7", "versionType": "git"}, {"lessThan": "7311970d07c4606362081250da95f2c7901fc0db", "status": "affected", "version": "c5ebcedb566ef17bda7b02686e0d658a7bb42ee7", "versionType": "git"}, {"lessThan": "4f6fc782128355931527cefe3eb45338abd8ab39", "status": "affected", "version": "c5ebcedb566ef17bda7b02686e0d658a7bb42ee7", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["kernel/events/core.c", "kernel/exit.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "3.7"}, {"lessThan": "3.7", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.4.*", "status": "unaffected", "version": "5.4.295", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.239", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.186", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.142", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.95", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.35", "versionType": "semver"}, {"lessThanOrEqual": "6.15.*", "status": "unaffected", "version": "6.15.4", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "6.16", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "787938FE-68C1-4295-BECA-110746C6BED4", "versionEndExcluding": "5.4.295", "versionStartIncluding": "3.7", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "C3D14F4C-A21E-465D-A928-5CCE684E2B98", "versionEndExcluding": "5.10.239", "versionStartIncluding": "5.5", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "D96F2C0D-0D4A-4658-AD34-D8A626EA422D", "versionEndExcluding": "5.15.186", "versionStartIncluding": "5.11", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "459B4E94-FE0E-434D-B782-95E3A5FFC6B1", "versionEndExcluding": "6.1.142", "versionStartIncluding": "5.16", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "C5E01853-7048-4D78-9479-9AEE41AC8456", "versionEndExcluding": "6.6.95", "versionStartIncluding": "6.2", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "E569FD34-0076-4428-BE17-EECCF867611C", "versionEndExcluding": "6.12.35", "versionStartIncluding": "6.7", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "DFD174C5-1AA2-4671-BDDC-1A9FCC753655", "versionEndExcluding": "6.15.4", "versionStartIncluding": "6.13", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.16:rc1:*:*:*:*:*:*", "matchCriteriaId": "6D4894DB-CCFE-4602-B1BF-3960B2E19A01", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.16:rc2:*:*:*:*:*:*", "matchCriteriaId": "09709862-E348-4378-8632-5A7813EDDC86", "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\nperf: Fix sample vs do_exit()\n\nBaisheng Gao reported an ARM64 crash, which Mark decoded as being a\nsynchronous external abort -- most likely due to trying to access\nMMIO in bad ways.\n\nThe crash further shows perf trying to do a user stack sample while in\nexit_mmap()'s tlb_finish_mmu() -- i.e. while tearing down the address\nspace it is trying to access.\n\nIt turns out that we stop perf after we tear down the userspace mm; a\nreceipie for disaster, since perf likes to access userspace for\nvarious reasons.\n\nFlip this order by moving up where we stop perf in do_exit().\n\nAdditionally, harden PERF_SAMPLE_CALLCHAIN and PERF_SAMPLE_STACK_USER\nto abort when the current task does not have an mm (exit_mm() makes\nsure to set current->mm = NULL; before commencing with the actual\nteardown). Such that CPU wide events don't trip on this same problem."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: perf: Fix sample vs do_exit() Baisheng Gao inform\u00f3 de un fallo de ARM64, que Mark decodific\u00f3 como una interrupci\u00f3n externa sincr\u00f3nica, probablemente debido a un intento de acceder a MMIO de forma incorrecta. El fallo muestra adem\u00e1s que perf intenta hacer una muestra de pila de usuario mientras est\u00e1 en tlb_finish_mmu() de exit_mmap(), es decir, mientras derriba el espacio de direcciones al que intenta acceder. Resulta que detenemos perf despu\u00e9s de derribar el mm del espacio de usuario; una receta para el desastre, ya que a perf le gusta acceder al espacio de usuario por varias razones. Invierta este orden subiendo donde detenemos perf en do_exit(). Adem\u00e1s, endurezca PERF_SAMPLE_CALLCHAIN y PERF_SAMPLE_STACK_USER para que se detengan cuando la tarea actual no tenga un mm (exit_mm() se asegura de establecer current-&gt;mm = NULL; antes de comenzar con el desmontaje real). De modo que los eventos de toda la CPU no se activen con este mismo problema."}], "id": "CVE-2025-38424", "lastModified": "2026-10-15T22:18:40.607", "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-2025-38424", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-10-15T21:50:16.738401Z", "version": "2.0.3"}}]}, "published": "2025-07-25T15:15:27.260", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/2ee6044a693735396bb47eeaba1ac3ae26c1c99b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/456019adaa2f5366b89c868dea9b483179bece54"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/4f6fc782128355931527cefe3eb45338abd8ab39"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/507c9a595bad3abd107c6a8857d7fd125d89f386"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/7311970d07c4606362081250da95f2c7901fc0db"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/7b8f3c72175c6a63a95cf2e219f8b78e2baad34e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/975ffddfa2e19823c719459d2364fcaa17673964"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a9f6aab7910a0ef2895797f15c947f6d1053160f"}, {"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: perf: Fix sample vs do_exit()", "id": "2383459", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2383459"}, "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": ["In the Linux kernel, the following vulnerability has been resolved:\nperf: Fix sample vs do_exit()\nBaisheng Gao reported an ARM64 crash, which Mark decoded as being a\nsynchronous external abort -- most likely due to trying to access\nMMIO in bad ways.\nThe crash further shows perf trying to do a user stack sample while in\nexit_mmap()'s tlb_finish_mmu() -- i.e. while tearing down the address\nspace it is trying to access.\nIt turns out that we stop perf after we tear down the userspace mm; a\nreceipie for disaster, since perf likes to access userspace for\nvarious reasons.\nFlip this order by moving up where we stop perf in do_exit().\nAdditionally, harden PERF_SAMPLE_CALLCHAIN and PERF_SAMPLE_STACK_USER\nto abort when the current task does not have an mm (exit_mm() makes\nsure to set current->mm = NULL; before commencing with the actual\nteardown). Such that CPU wide events don't trip on this same problem."], "name": "CVE-2025-38424", "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": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "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": "2025-07-25T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-38424\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-38424\nhttps://lore.kernel.org/linux-cve-announce/2025072555-CVE-2025-38424-500e@gregkh/T"], "threat_severity": "Moderate"}

{"created": "2025-07-26T11:22:08.538949+00:00", "updated": "2025-07-26T11:22:08.539026+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}