CVE-2026-89875

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-89875", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-11T19:38:34.772Z", "datePublished": "2026-09-16T10:31:42.777Z", "dateUpdated": "2026-10-19T08:54:08.215Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T08:54:08.215Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: ti: vpe: quiesce overflow recovery before freeing streams\n\nThe VIP overflow recovery worker is armed from the hardirq handler when a\nFIFO overflow is detected, and the list-complete path looks the stream up\nthrough the VPDMA list private pointer. Both keep touching stream, port\nand device state; the recovery worker also resets the parser and VPDMA,\nrepopulates the descriptor list, and re-enables the per-list IRQs.\n\nvip_stop_streaming() masks and clears the per-list IRQs, but it neither\nsynchronizes the hardirq handler nor disables recovery_work. An overflow\nIRQ that has already queued recovery_work, or a list-complete IRQ in\nflight when the stream is torn down, can therefore still dereference the\nstream after its resources are released: the descriptor list is freed by\nvip_release_stream() on file release, and the stream itself by\nfree_stream() on unbind/remove.\n\nDrain the recovery worker and the IRQ handler at both teardown points\nthrough a shared vip_quiesce_stream() helper, before any stream-owned\nresource is released. disable_work_sync() cancels pending recovery_work,\ndrains a running instance, and raises its disable depth, so a subsequent\nschedule_work() issued by a racing IRQ handler is rejected at the\nworkqueue scheduler: recovery_work cannot be requeued after\ndisable_work_sync() takes effect. The worker may still re-enable the\nper-list IRQs before disable_work_sync() returns; disable_irqs() then\nmasks those sources and synchronize_irq() waits for any in-flight handler\nthat still dereferences stream state. In vip_stop_streaming() the helper\nruns before the parser is stopped, since a worker drained by\ndisable_work_sync() may re-enable the parser before exiting and would\notherwise undo the stop. recovery_work is created disabled and enabled in\nvip_start_streaming() before IRQs, pairing the enable with the teardown\ndisable across the streaming lifecycle.\n\nThis issue was found by an in-house static analysis tool and confirmed\nby manual code review."}], "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 bug is reached only through the TI VIP V4L2 capture node: a local process open()s /dev/videoX, STREAMONs to arm parser/list-complete IRQs and overflow recovery, then STREAMOFF or close() tears the stream down. It is not reachable from network packets or a remote peer.\nAC:L - The attacker starts streaming (which generates list-complete IRQs and can queue recovery_work) and then STREAMOFF/close, racing the hardirq and an already-queued worker that the old teardown never drained. Both sides of the race are attacker-induced and retryable, so this UAF is Low complexity.\nPR:L - Exploitation needs only an unprivileged local user who can open the VIP /dev/videoX node and issue V4L2 streaming ioctls. On DRA7/AM57 embedded, industrial, and automotive systems that is typically the video group or a camera app, not root or init-namespace capabilities.\nUI:N - The attacker performs open, STREAMON, and STREAMOFF/close themselves. No separate victim action such as mounting a filesystem or plugging in a device is required.\nS:U - The UAF corrupts host-kernel stream and VPDMA descriptor state used by the same kernel that serves the ioctl. That is standard kernel memory corruption/privilege escalation, not a VM, IOMMU, or sandbox boundary crossing.\nC:H - This is a use-after-free of the VPDMA descriptor list (freed on last file release) and of the stream object (freed on unbind/remove). The IRQ and recovery worker then read those objects, which per CVSS kernel UAF guidance enables kernel memory disclosure.\nI:H - vip_overflow_recovery_work and the list-complete path write the freed descriptor buffer, rebuild DTDs, and resubmit VPDMA lists, giving a kernel write/DMA primitive suitable for control-flow hijack. UAF memory corruption is scored High integrity.\nA:H - The same UAF and unlocked post_bufs/vidq walks from hardirq vs teardown oops or panic the kernel even when not fully exploited, so availability impact is High."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/media/platform/ti/vpe/vip.c"], "versions": [{"version": "fc2873aa4a21355593b55eb49ff534d31f81c584", "lessThan": "fd5b4a14c87b21e1c9eaee603b01bb7fa7db45c8", "status": "affected", "versionType": "git"}, {"version": "fc2873aa4a21355593b55eb49ff534d31f81c584", "lessThan": "aeaacc3001449d44b4ab7da56331121d1f3b137b", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/media/platform/ti/vpe/vip.c"], "versions": [{"version": "7.0", "status": "affected"}, {"version": "0", "lessThan": "7.0", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.5", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.3", "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": "7.0", "versionEndExcluding": "7.2.5"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "7.0", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/fd5b4a14c87b21e1c9eaee603b01bb7fa7db45c8"}, {"url": "https://git.kernel.org/stable/c/aeaacc3001449d44b4ab7da56331121d1f3b137b"}], "title": "media: ti: vpe: quiesce overflow recovery before freeing streams", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/media/platform/ti/vpe/vip.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "fd5b4a14c87b21e1c9eaee603b01bb7fa7db45c8", "status": "affected", "version": "fc2873aa4a21355593b55eb49ff534d31f81c584", "versionType": "git"}, {"lessThan": "aeaacc3001449d44b4ab7da56331121d1f3b137b", "status": "affected", "version": "fc2873aa4a21355593b55eb49ff534d31f81c584", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/media/platform/ti/vpe/vip.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "7.0"}, {"lessThan": "7.0", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.5", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.3", "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\nmedia: ti: vpe: quiesce overflow recovery before freeing streams\n\nThe VIP overflow recovery worker is armed from the hardirq handler when a\nFIFO overflow is detected, and the list-complete path looks the stream up\nthrough the VPDMA list private pointer. Both keep touching stream, port\nand device state; the recovery worker also resets the parser and VPDMA,\nrepopulates the descriptor list, and re-enables the per-list IRQs.\n\nvip_stop_streaming() masks and clears the per-list IRQs, but it neither\nsynchronizes the hardirq handler nor disables recovery_work. An overflow\nIRQ that has already queued recovery_work, or a list-complete IRQ in\nflight when the stream is torn down, can therefore still dereference the\nstream after its resources are released: the descriptor list is freed by\nvip_release_stream() on file release, and the stream itself by\nfree_stream() on unbind/remove.\n\nDrain the recovery worker and the IRQ handler at both teardown points\nthrough a shared vip_quiesce_stream() helper, before any stream-owned\nresource is released. disable_work_sync() cancels pending recovery_work,\ndrains a running instance, and raises its disable depth, so a subsequent\nschedule_work() issued by a racing IRQ handler is rejected at the\nworkqueue scheduler: recovery_work cannot be requeued after\ndisable_work_sync() takes effect. The worker may still re-enable the\nper-list IRQs before disable_work_sync() returns; disable_irqs() then\nmasks those sources and synchronize_irq() waits for any in-flight handler\nthat still dereferences stream state. In vip_stop_streaming() the helper\nruns before the parser is stopped, since a worker drained by\ndisable_work_sync() may re-enable the parser before exiting and would\notherwise undo the stop. recovery_work is created disabled and enabled in\nvip_start_streaming() before IRQs, pairing the enable with the teardown\ndisable across the streaming lifecycle.\n\nThis issue was found by an in-house static analysis tool and confirmed\nby manual code review."}], "id": "CVE-2026-89875", "lastModified": "2026-10-19T09:18:32.267", "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"}]}, "published": "2026-09-16T11:16:55.757", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/aeaacc3001449d44b4ab7da56331121d1f3b137b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/fd5b4a14c87b21e1c9eaee603b01bb7fa7db45c8"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[fc2873aa4a21355593b55eb49ff534d31f81c584,fd5b4a14c87b21e1c9eaee603b01bb7fa7db45c8)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[fc2873aa4a21355593b55eb49ff534d31f81c584,aeaacc3001449d44b4ab7da56331121d1f3b137b)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "7.0"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.5,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.3-rc1,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-09-17T06:00:08.803090+00:00", "updated": "2026-09-18T03:15:02.174029+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-416"]}