CVE-2026-89599

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-89599", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-11T19:38:34.731Z", "datePublished": "2026-09-11T19:45:02.112Z", "dateUpdated": "2026-10-19T08:49:31.606Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T08:49:31.606Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfbdev: omapfb: panel-dsi-cm: initialize lock before registering display\n\ndsicm_probe() registers the display before initializing ddata->lock.\nOnce omapdss_register_display() publishes the display, another consumer\ncan reach a dsicm callback that takes this mutex while it is still\nuninitialized.\n\nInitialize the mutex before registering the display so the published\ncallbacks always see a valid lock."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 8.4, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:L - The bug is in the OMAP DSI command-mode panel driver: dsicm_probe() publishes dsicm_ops via omapdss_register_display(), and those callbacks are reached from local omapfb probe, FBIOBLANK, and omapfb ioctls on /dev/fb*. There is no network, Bluetooth/WiFi, or USB protocol path into this code.\nAC:L - On preemptible kernels dsicm_probe() can be preempted after omapdss_register_display() adds the panel to panel_list and before mutex_init(&ddata->lock). Concurrent omapfb_probe then calls dsicm_enable/enable_te/update on that published device, so the race is driven by the in-kernel consumer rather than an uninfluenced hardware lottery.\nPR:N - dsicm_probe() and the omapfb consumer (omapfb_init_display \u2192 driver->enable/update) run from platform/deferred probe during boot on boards with an omapdss,panel-dsi-cm node. That path has no capable() or credential check and needs no OS account.\nUI:N - Display registration and omapfb\u2019s subsequent enable/update run automatically during device enumeration on affected TI OMAP systems; no victim must open /dev/fb*, write sysfs, or mount a filesystem.\nS:U - Uninitialized-mutex use and any follow-on lock or DSI-state corruption remain inside the host omapfb/omapdss driver. This is not a VM escape, IOMMU bypass, or other cross-authority impact.\nC:H - A consumer that wins the race mutex_lock()s kzalloc\u2019d ddata->lock (NULL wait_list); probe can then mutex_init() a lock another thread still holds so two threads enter dsicm_enable/update. That lock-state corruption is kernel memory-unsafety that can be leveraged for disclosure, not a small bounded leak.\nI:H - mutex_init() of a mutex another thread still holds resets owner and wait_list while dsicm callbacks run unsynchronized against DSI bus and panel_drv_data state, giving write and control-flow primitives rather than a pure crash.\nA:H - CONFIG_DEBUG_MUTEXES treats lock-used-without-init as an oops, and a corrupted mutex wait_list or double-entry into DSI enable/disable causes a kernel oops, panic, or hang, fully denying availability."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/video/fbdev/omap2/omapfb/displays/panel-dsi-cm.c"], "versions": [{"version": "f76ee892a99e68b55402b8d4b8aeffcae2aff34d", "lessThan": "ef20d4e17d7fb0d83144caa9667e6f3198288993", "status": "affected", "versionType": "git"}, {"version": "f76ee892a99e68b55402b8d4b8aeffcae2aff34d", "lessThan": "e7023d18c4eb292f886b31a3576402cb0e357df7", "status": "affected", "versionType": "git"}, {"version": "f76ee892a99e68b55402b8d4b8aeffcae2aff34d", "lessThan": "f33a96e49284589257e90ddc4394ec0c6bf11ec4", "status": "affected", "versionType": "git"}, {"version": "f76ee892a99e68b55402b8d4b8aeffcae2aff34d", "lessThan": "302d19fbc7dc7e9f498930c66d65ff711ba5ba9f", "status": "affected", "versionType": "git"}, {"version": "f76ee892a99e68b55402b8d4b8aeffcae2aff34d", "lessThan": "2c3f8c9c995db185284b079f39177e85b2258176", "status": "affected", "versionType": "git"}, {"version": "f76ee892a99e68b55402b8d4b8aeffcae2aff34d", "lessThan": "76818e81cfcae33b09b739de09162c7d8d89bf0b", "status": "affected", "versionType": "git"}, {"version": "f76ee892a99e68b55402b8d4b8aeffcae2aff34d", "lessThan": "09db79078f25c048cfb5d7849795c70415ab8574", "status": "affected", "versionType": "git"}, {"version": "f76ee892a99e68b55402b8d4b8aeffcae2aff34d", "lessThan": "f8e43fe0f22b7137ce456e6fe3581d3098174f74", "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/video/fbdev/omap2/omapfb/displays/panel-dsi-cm.c"], "versions": [{"version": "4.5", "status": "affected"}, {"version": "0", "lessThan": "4.5", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.270", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.221", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.188", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.157", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.109", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.50", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.4", "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": "4.5", "versionEndExcluding": "5.10.270"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.5", "versionEndExcluding": "5.15.221"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.5", "versionEndExcluding": "6.1.188"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.5", "versionEndExcluding": "6.6.157"}, {"vulnerable": true, "criteria": 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{"url": "https://git.kernel.org/stable/c/76818e81cfcae33b09b739de09162c7d8d89bf0b"}, {"url": "https://git.kernel.org/stable/c/09db79078f25c048cfb5d7849795c70415ab8574"}, {"url": "https://git.kernel.org/stable/c/f8e43fe0f22b7137ce456e6fe3581d3098174f74"}], "title": "fbdev: omapfb: panel-dsi-cm: initialize lock before registering display", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/video/fbdev/omap2/omapfb/displays/panel-dsi-cm.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "ef20d4e17d7fb0d83144caa9667e6f3198288993", "status": "affected", "version": "f76ee892a99e68b55402b8d4b8aeffcae2aff34d", "versionType": "git"}, {"lessThan": "e7023d18c4eb292f886b31a3576402cb0e357df7", "status": "affected", "version": "f76ee892a99e68b55402b8d4b8aeffcae2aff34d", "versionType": "git"}, {"lessThan": "f33a96e49284589257e90ddc4394ec0c6bf11ec4", "status": "affected", "version": "f76ee892a99e68b55402b8d4b8aeffcae2aff34d", "versionType": "git"}, {"lessThan": "302d19fbc7dc7e9f498930c66d65ff711ba5ba9f", "status": "affected", "version": "f76ee892a99e68b55402b8d4b8aeffcae2aff34d", "versionType": "git"}, {"lessThan": "2c3f8c9c995db185284b079f39177e85b2258176", "status": "affected", "version": "f76ee892a99e68b55402b8d4b8aeffcae2aff34d", "versionType": "git"}, {"lessThan": "76818e81cfcae33b09b739de09162c7d8d89bf0b", "status": "affected", "version": "f76ee892a99e68b55402b8d4b8aeffcae2aff34d", "versionType": "git"}, {"lessThan": "09db79078f25c048cfb5d7849795c70415ab8574", "status": "affected", "version": "f76ee892a99e68b55402b8d4b8aeffcae2aff34d", "versionType": "git"}, {"lessThan": "f8e43fe0f22b7137ce456e6fe3581d3098174f74", "status": "affected", "version": "f76ee892a99e68b55402b8d4b8aeffcae2aff34d", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/video/fbdev/omap2/omapfb/displays/panel-dsi-cm.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "4.5"}, {"lessThan": "4.5", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.270", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.221", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.188", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.157", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.109", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.50", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.4", "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\nfbdev: omapfb: panel-dsi-cm: initialize lock before registering display\n\ndsicm_probe() registers the display before initializing ddata->lock.\nOnce omapdss_register_display() publishes the display, another consumer\ncan reach a dsicm callback that takes this mutex while it is still\nuninitialized.\n\nInitialize the mutex before registering the display so the published\ncallbacks always see a valid lock."}], "id": "CVE-2026-89599", "lastModified": "2026-10-19T09:17:56.383", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 8.4, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.5, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}]}, "published": "2026-09-11T20:19:44.733", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/09db79078f25c048cfb5d7849795c70415ab8574"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/2c3f8c9c995db185284b079f39177e85b2258176"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/302d19fbc7dc7e9f498930c66d65ff711ba5ba9f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/76818e81cfcae33b09b739de09162c7d8d89bf0b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e7023d18c4eb292f886b31a3576402cb0e357df7"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ef20d4e17d7fb0d83144caa9667e6f3198288993"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f33a96e49284589257e90ddc4394ec0c6bf11ec4"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f8e43fe0f22b7137ce456e6fe3581d3098174f74"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: Linux kernel: Denial of Service due to uninitialized mutex in `fbdev: omapfb: panel-dsi-cm`", "id": "2532244", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2532244"}, "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"}, "cwe": "CWE-908", "details": ["A flaw was found in the Linux kernel's `fbdev: omapfb: panel-dsi-cm` component. The `dsicm_probe()` function registers a display before its associated lock (mutex) is properly initialized. This timing issue allows another process to attempt to acquire the uninitialized mutex, which could lead to system instability or a Denial of Service (DoS)."], "name": "CVE-2026-89599", "public_date": "2026-09-11T19:45:02Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-89599\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-89599\nhttps://git.kernel.org/stable/c/09db79078f25c048cfb5d7849795c70415ab8574\nhttps://git.kernel.org/stable/c/2c3f8c9c995db185284b079f39177e85b2258176\nhttps://git.kernel.org/stable/c/76818e81cfcae33b09b739de09162c7d8d89bf0b\nhttps://git.kernel.org/stable/c/f8e43fe0f22b7137ce456e6fe3581d3098174f74"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[f76ee892a99e68b55402b8d4b8aeffcae2aff34d,2c3f8c9c995db185284b079f39177e85b2258176)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[f76ee892a99e68b55402b8d4b8aeffcae2aff34d,76818e81cfcae33b09b739de09162c7d8d89bf0b)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[f76ee892a99e68b55402b8d4b8aeffcae2aff34d,09db79078f25c048cfb5d7849795c70415ab8574)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[f76ee892a99e68b55402b8d4b8aeffcae2aff34d,f8e43fe0f22b7137ce456e6fe3581d3098174f74)"}}], "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": "generic", "value": "4.5"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,4.5)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.109,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.50,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.4,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "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": "2026-09-12T07:00:14.274325+00:00", "updated": "2026-09-15T21:30:16.440170+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}