CVE-2025-40319

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2025-40319", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-04-16T07:20:57.186Z", "datePublished": "2025-12-08T00:46:46.448Z", "dateUpdated": "2026-10-15T22:02:43.846Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:09:31.491Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Sync pending IRQ work before freeing ring buffer\n\nFix a race where irq_work can be queued in bpf_ringbuf_commit()\nbut the ring buffer is freed before the work executes.\nIn the syzbot reproducer, a BPF program attached to sched_switch\ntriggers bpf_ringbuf_commit(), queuing an irq_work. If the ring buffer\nis freed before this work executes, the irq_work thread may accesses\nfreed memory.\nCalling `irq_work_sync(&rb->work)` ensures that all pending irq_work\ncomplete before freeing the buffer."}], "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 `bpf()` syscall \u2014 creating a ringbuf map, loading a program that calls `bpf_ringbuf_output`/`submit`, and closing the fds to drive `ringbuf_map_free()`. There is no path for a remote peer to load BPF programs, so local system access is required.\nAC:L - The attacker controls both sides of the race: he triggers `bpf_ringbuf_commit()` on demand (loopback packet into his own socket filter, using `BPF_RB_FORCE_WAKEUP` to guarantee `irq_work_queue()` on every commit) and separately triggers the free by detaching and closing the map/prog fds, looping unboundedly. On PREEMPT_RT the work is deferred to the `irq_workd` kthread and on architectures without `arch_irq_work_has_interrupt()` to the next tick, widening the window to milliseconds; syzbot both reproduced the bug and confirmed the fix.\nPR:L - `BPF_MAP_TYPE_RINGBUF`/`USER_RINGBUF` are listed as unprivileged map types in `map_create()`, the ringbuf helpers sit above the `CAP_BPF` gate in `bpf_base_func_proto()`, `BPF_PROG_TYPE_SOCKET_FILTER` is exempt from the CAP_BPF prog-load check, and `SO_ATTACH_BPF` has no capability check \u2014 so an ordinary unprivileged user can build the entire chain on the upstream default `unprivileged_bpf_disabled=0`.\nUI:N - The attacker performs every step himself \u2014 map creation, program load, socket attach, packet injection, and fd close \u2014 with no victim action or cooperating process required.\nS:U - The use-after-free corrupts kernel memory and the per-CPU irq_work list within the same security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - `irq_work_single()` and `bpf_ringbuf_notify()`/`wake_up_all()` read `work->node.llist`, `work->func`, `work->irqwait.task`, and the `waitq` list head out of freed memory, and the vmalloc VA range can be reclaimed with a large vmalloc-backed `BPF_MAP_TYPE_ARRAY` whose contents the attacker sets \u2014 turning the dangling traversal into an arbitrary kernel-memory read/disclosure primitive.\nI:H - The irq_work core performs `atomic_set()`/`atomic_cmpxchg()` writes into the freed object and an indirect call `work->func(work)` on a pointer read from it, while `wake_up_all()` adds `list_del_init()` unlink writes and a second function-pointer call \u2014 after VA-range reclamation with controlled data this is a direct control-flow hijack and arbitrary-write path to privilege escalation.\nA:H - This is a use-after-free reported by syzbot as a KASAN splat; in the common case the irq_work dereferences an already-unmapped vmalloc address from hardirq or the `irq_workd` kthread, producing an unhandled page fault and kernel panic, and it can be re-triggered in a loop."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["kernel/bpf/ringbuf.c"], "versions": [{"version": "457f44363a8894135c85b7a9afd2bd8196db24ab", "lessThan": "47626748a2a00068dbbd5836d19076637b4e235b", "status": "affected", "versionType": "git"}, {"version": "457f44363a8894135c85b7a9afd2bd8196db24ab", "lessThan": "de2ce6b14bc3e565708a39bdba3ef9162aeffc72", "status": "affected", "versionType": "git"}, {"version": "457f44363a8894135c85b7a9afd2bd8196db24ab", "lessThan": "e1828c7a8d8135e21ff6adaaa9458c32aae13b11", "status": "affected", "versionType": "git"}, {"version": "457f44363a8894135c85b7a9afd2bd8196db24ab", "lessThan": "6451141103547f4efd774e912418a3b4318046c6", "status": "affected", "versionType": "git"}, {"version": "457f44363a8894135c85b7a9afd2bd8196db24ab", "lessThan": "10ca3b2eec384628bc9f5d8190aed9427ad2dde6", "status": "affected", "versionType": "git"}, {"version": "457f44363a8894135c85b7a9afd2bd8196db24ab", "lessThan": "430e15544f11f8de26b2b5109c7152f71b78295e", "status": "affected", "versionType": "git"}, {"version": "457f44363a8894135c85b7a9afd2bd8196db24ab", "lessThan": "4e9077638301816a7d73fa1e1b4c1db4a7e3b59c", "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/bpf/ringbuf.c"], "versions": [{"version": "5.8", "status": "affected"}, {"version": "0", "lessThan": "5.8", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.247", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.197", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.159", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.117", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.58", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.17.8", "lessThanOrEqual": "6.17.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18", "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": "5.8", "versionEndExcluding": "5.10.247"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.8", "versionEndExcluding": "5.15.197"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.8", "versionEndExcluding": "6.1.159"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.8", "versionEndExcluding": "6.6.117"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.8", "versionEndExcluding": "6.12.58"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.8", "versionEndExcluding": "6.17.8"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.8", "versionEndExcluding": "6.18"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/47626748a2a00068dbbd5836d19076637b4e235b"}, {"url": "https://git.kernel.org/stable/c/de2ce6b14bc3e565708a39bdba3ef9162aeffc72"}, {"url": "https://git.kernel.org/stable/c/e1828c7a8d8135e21ff6adaaa9458c32aae13b11"}, {"url": "https://git.kernel.org/stable/c/6451141103547f4efd774e912418a3b4318046c6"}, {"url": "https://git.kernel.org/stable/c/10ca3b2eec384628bc9f5d8190aed9427ad2dde6"}, {"url": "https://git.kernel.org/stable/c/430e15544f11f8de26b2b5109c7152f71b78295e"}, {"url": "https://git.kernel.org/stable/c/4e9077638301816a7d73fa1e1b4c1db4a7e3b59c"}], "title": "bpf: Sync pending IRQ work before freeing ring buffer", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2025-40319", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-10-15T21:59:12.535828Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-15T22:02:43.846Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2025-40319", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-10-15T21:59:12.535828Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-15T21:59:13.603Z"}}], "cna": {"title": "bpf: Sync pending IRQ work before freeing ring buffer", "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 `bpf()` syscall \u2014 creating a ringbuf map, loading a program that calls `bpf_ringbuf_output`/`submit`, and closing the fds to drive `ringbuf_map_free()`. There is no path for a remote peer to load BPF programs, so local system access is required.\nAC:L - The attacker controls both sides of the race: he triggers `bpf_ringbuf_commit()` on demand (loopback packet into his own socket filter, using `BPF_RB_FORCE_WAKEUP` to guarantee `irq_work_queue()` on every commit) and separately triggers the free by detaching and closing the map/prog fds, looping unboundedly. On PREEMPT_RT the work is deferred to the `irq_workd` kthread and on architectures without `arch_irq_work_has_interrupt()` to the next tick, widening the window to milliseconds; syzbot both reproduced the bug and confirmed the fix.\nPR:L - `BPF_MAP_TYPE_RINGBUF`/`USER_RINGBUF` are listed as unprivileged map types in `map_create()`, the ringbuf helpers sit above the `CAP_BPF` gate in `bpf_base_func_proto()`, `BPF_PROG_TYPE_SOCKET_FILTER` is exempt from the CAP_BPF prog-load check, and `SO_ATTACH_BPF` has no capability check \u2014 so an ordinary unprivileged user can build the entire chain on the upstream default `unprivileged_bpf_disabled=0`.\nUI:N - The attacker performs every step himself \u2014 map creation, program load, socket attach, packet injection, and fd close \u2014 with no victim action or cooperating process required.\nS:U - The use-after-free corrupts kernel memory and the per-CPU irq_work list within the same security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - `irq_work_single()` and `bpf_ringbuf_notify()`/`wake_up_all()` read `work->node.llist`, `work->func`, `work->irqwait.task`, and the `waitq` list head out of freed memory, and the vmalloc VA range can be reclaimed with a large vmalloc-backed `BPF_MAP_TYPE_ARRAY` whose contents the attacker sets \u2014 turning the dangling traversal into an arbitrary kernel-memory read/disclosure primitive.\nI:H - The irq_work core performs `atomic_set()`/`atomic_cmpxchg()` writes into the freed object and an indirect call `work->func(work)` on a pointer read from it, while `wake_up_all()` adds `list_del_init()` unlink writes and a second function-pointer call \u2014 after VA-range reclamation with controlled data this is a direct control-flow hijack and arbitrary-write path to privilege escalation.\nA:H - This is a use-after-free reported by syzbot as a KASAN splat; in the common case the irq_work dereferences an already-unmapped vmalloc address from hardirq or the `irq_workd` kthread, producing an unhandled page fault and kernel panic, and it can be re-triggered in a loop."}]}], "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "457f44363a8894135c85b7a9afd2bd8196db24ab", "lessThan": "47626748a2a00068dbbd5836d19076637b4e235b", "versionType": "git"}, {"status": "affected", "version": "457f44363a8894135c85b7a9afd2bd8196db24ab", "lessThan": "de2ce6b14bc3e565708a39bdba3ef9162aeffc72", "versionType": "git"}, {"status": "affected", "version": "457f44363a8894135c85b7a9afd2bd8196db24ab", "lessThan": "e1828c7a8d8135e21ff6adaaa9458c32aae13b11", "versionType": "git"}, {"status": "affected", "version": "457f44363a8894135c85b7a9afd2bd8196db24ab", "lessThan": "6451141103547f4efd774e912418a3b4318046c6", "versionType": "git"}, {"status": "affected", "version": "457f44363a8894135c85b7a9afd2bd8196db24ab", "lessThan": "10ca3b2eec384628bc9f5d8190aed9427ad2dde6", "versionType": "git"}, {"status": "affected", "version": "457f44363a8894135c85b7a9afd2bd8196db24ab", "lessThan": "430e15544f11f8de26b2b5109c7152f71b78295e", "versionType": "git"}, {"status": "affected", "version": "457f44363a8894135c85b7a9afd2bd8196db24ab", "lessThan": "4e9077638301816a7d73fa1e1b4c1db4a7e3b59c", "versionType": "git"}], "programFiles": ["kernel/bpf/ringbuf.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "5.8"}, {"status": "unaffected", "version": "0", "lessThan": "5.8", "versionType": "semver"}, {"status": "unaffected", "version": "5.10.247", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.197", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.159", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.117", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.58", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.17.8", "versionType": "semver", "lessThanOrEqual": "6.17.*"}, {"status": "unaffected", "version": "6.18", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["kernel/bpf/ringbuf.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/47626748a2a00068dbbd5836d19076637b4e235b"}, {"url": "https://git.kernel.org/stable/c/de2ce6b14bc3e565708a39bdba3ef9162aeffc72"}, {"url": "https://git.kernel.org/stable/c/e1828c7a8d8135e21ff6adaaa9458c32aae13b11"}, {"url": "https://git.kernel.org/stable/c/6451141103547f4efd774e912418a3b4318046c6"}, {"url": "https://git.kernel.org/stable/c/10ca3b2eec384628bc9f5d8190aed9427ad2dde6"}, {"url": "https://git.kernel.org/stable/c/430e15544f11f8de26b2b5109c7152f71b78295e"}, {"url": "https://git.kernel.org/stable/c/4e9077638301816a7d73fa1e1b4c1db4a7e3b59c"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Sync pending IRQ work before freeing ring buffer\n\nFix a race where irq_work can be queued in bpf_ringbuf_commit()\nbut the ring buffer is freed before the work executes.\nIn the syzbot reproducer, a BPF program attached to sched_switch\ntriggers bpf_ringbuf_commit(), queuing an irq_work. If the ring buffer\nis freed before this work executes, the irq_work thread may accesses\nfreed memory.\nCalling `irq_work_sync(&rb->work)` ensures that all pending irq_work\ncomplete before freeing the buffer."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.10.247", "versionStartIncluding": "5.8"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.197", "versionStartIncluding": "5.8"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1.159", "versionStartIncluding": "5.8"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6.117", "versionStartIncluding": "5.8"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.12.58", "versionStartIncluding": "5.8"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.17.8", "versionStartIncluding": "5.8"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.18", "versionStartIncluding": "5.8"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:09:31.491Z"}}}, "cveMetadata": {"cveId": "CVE-2025-40319", "state": "PUBLISHED", "dateUpdated": "2026-10-15T22:02:43.846Z", "dateReserved": "2025-04-16T07:20:57.186Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2025-12-08T00:46:46.448Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["kernel/bpf/ringbuf.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "47626748a2a00068dbbd5836d19076637b4e235b", "status": "affected", "version": "457f44363a8894135c85b7a9afd2bd8196db24ab", "versionType": "git"}, {"lessThan": "de2ce6b14bc3e565708a39bdba3ef9162aeffc72", "status": "affected", "version": "457f44363a8894135c85b7a9afd2bd8196db24ab", "versionType": "git"}, {"lessThan": "e1828c7a8d8135e21ff6adaaa9458c32aae13b11", "status": "affected", "version": "457f44363a8894135c85b7a9afd2bd8196db24ab", "versionType": "git"}, {"lessThan": "6451141103547f4efd774e912418a3b4318046c6", "status": "affected", "version": "457f44363a8894135c85b7a9afd2bd8196db24ab", "versionType": "git"}, {"lessThan": "10ca3b2eec384628bc9f5d8190aed9427ad2dde6", "status": "affected", "version": "457f44363a8894135c85b7a9afd2bd8196db24ab", "versionType": "git"}, {"lessThan": "430e15544f11f8de26b2b5109c7152f71b78295e", "status": "affected", "version": "457f44363a8894135c85b7a9afd2bd8196db24ab", "versionType": "git"}, {"lessThan": "4e9077638301816a7d73fa1e1b4c1db4a7e3b59c", "status": "affected", "version": "457f44363a8894135c85b7a9afd2bd8196db24ab", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["kernel/bpf/ringbuf.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.8"}, {"lessThan": "5.8", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.247", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.197", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.159", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.117", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.58", "versionType": "semver"}, {"lessThanOrEqual": "6.17.*", "status": "unaffected", "version": "6.17.8", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "6.18", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Sync pending IRQ work before freeing ring buffer\n\nFix a race where irq_work can be queued in bpf_ringbuf_commit()\nbut the ring buffer is freed before the work executes.\nIn the syzbot reproducer, a BPF program attached to sched_switch\ntriggers bpf_ringbuf_commit(), queuing an irq_work. If the ring buffer\nis freed before this work executes, the irq_work thread may accesses\nfreed memory.\nCalling `irq_work_sync(&rb->work)` ensures that all pending irq_work\ncomplete before freeing the buffer."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nbpf: Sincronizar el trabajo IRQ pendiente antes de liberar el b\u00fafer de anillo\n\nCorrige una condici\u00f3n de carrera donde irq_work puede ser encolado en bpf_ringbuf_commit() pero el b\u00fafer de anillo es liberado antes de que el trabajo se ejecute. En el reproductor de syzbot, un programa BPF adjunto a sched_switch activa bpf_ringbuf_commit(), encolando un irq_work. Si el b\u00fafer de anillo es liberado antes de que este trabajo se ejecute, el hilo de irq_work puede acceder a memoria liberada. Llamar a 'irq_work_sync(&rb -> work)' asegura que todo el irq_work pendiente se complete antes de liberar el b\u00fafer."}], "id": "CVE-2025-40319", "lastModified": "2026-10-15T22:19:08.003", "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-2025-40319", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-10-15T21:59:12.535828Z", "version": "2.0.3"}}]}, "published": "2025-12-08T01:16:04.543", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/10ca3b2eec384628bc9f5d8190aed9427ad2dde6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/430e15544f11f8de26b2b5109c7152f71b78295e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/47626748a2a00068dbbd5836d19076637b4e235b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/4e9077638301816a7d73fa1e1b4c1db4a7e3b59c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/6451141103547f4efd774e912418a3b4318046c6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/de2ce6b14bc3e565708a39bdba3ef9162aeffc72"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e1828c7a8d8135e21ff6adaaa9458c32aae13b11"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Deferred"}

{"bugzilla": {"description": "kernel: bpf: Sync pending IRQ work before freeing ring buffer", "id": "2419863", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2419863"}, "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:\nbpf: Sync pending IRQ work before freeing ring buffer\nFix a race where irq_work can be queued in bpf_ringbuf_commit()\nbut the ring buffer is freed before the work executes.\nIn the syzbot reproducer, a BPF program attached to sched_switch\ntriggers bpf_ringbuf_commit(), queuing an irq_work. If the ring buffer\nis freed before this work executes, the irq_work thread may accesses\nfreed memory.\nCalling `irq_work_sync(&rb->work)` ensures that all pending irq_work\ncomplete before freeing the buffer."], "name": "CVE-2025-40319", "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": "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": "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": "2025-12-08T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-40319\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-40319\nhttps://lore.kernel.org/linux-cve-announce/2025120823-CVE-2025-40319-9a46@gregkh/T"], "threat_severity": "Moderate"}

{}