CVE-2026-31583

{"id": "CVE-2026-31583", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-31583", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-11-06T15:22:09.106144Z"}}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.8}]}, "affected": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "affectedData": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "8139a4d583abad45eb987b5a99b3281b6d435b7e", "lessThan": "3c0283a59e36e3707c4a81f4952e362d31f876b8", "versionType": "git"}, {"status": "affected", "version": "8139a4d583abad45eb987b5a99b3281b6d435b7e", "lessThan": "2cbf81f76842e46bdf25823c70e1db4044a65678", "versionType": "git"}, {"status": "affected", "version": "8139a4d583abad45eb987b5a99b3281b6d435b7e", "lessThan": "38a327221f7f765e7d853b7bafe47e342441ec85", "versionType": "git"}, {"status": "affected", "version": "8139a4d583abad45eb987b5a99b3281b6d435b7e", "lessThan": "b5d141ea15f173f15b9f0a72965902f3428c0d92", "versionType": "git"}, {"status": "affected", "version": "8139a4d583abad45eb987b5a99b3281b6d435b7e", "lessThan": "5fb2940327722b4684d2f964b54c1c90aa277324", "versionType": "git"}, {"status": "affected", "version": "8139a4d583abad45eb987b5a99b3281b6d435b7e", "lessThan": "871b8ea8ef39a6c253594649f4339378fad3d0dd", "versionType": "git"}, {"status": "affected", "version": "8139a4d583abad45eb987b5a99b3281b6d435b7e", "lessThan": "6b9e66437cc6123ddedac141e1b8b6fcf57d2972", "versionType": "git"}, {"status": "affected", "version": "8139a4d583abad45eb987b5a99b3281b6d435b7e", "lessThan": "dd2b888e08d3b3d6aacd65d76cd44fac11da750f", "versionType": "git"}, {"status": "affected", "version": "8139a4d583abad45eb987b5a99b3281b6d435b7e", "lessThan": "a66485a934c7187ae8e36517d40615fa2e961cff", "versionType": "git"}], "programFiles": ["drivers/media/usb/em28xx/em28xx-video.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "3.16"}, {"status": "unaffected", "version": "0", "lessThan": "3.16", "versionType": "semver"}, {"status": "unaffected", "version": "5.10.258", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.209", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.175", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.136", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.83", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.24", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "6.19.14", "versionType": "semver", "lessThanOrEqual": "6.19.*"}, {"status": "unaffected", "version": "7.0.1", "versionType": "semver", "lessThanOrEqual": "7.0.*"}, {"status": "unaffected", "version": "7.1", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/media/usb/em28xx/em28xx-video.c"], "defaultStatus": "affected"}]}, {"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "affectedData": [{"vendor": "Siemens", "product": "SIMATIC S7-1500 TM MFP - GNU/Linux subsystem", "versions": [{"status": "affected", "version": "0", "lessThan": "*", "versionType": "custom"}], "defaultStatus": "unknown"}]}], "published": "2026-04-24T15:16:33.017", "references": [{"url": "https://git.kernel.org/stable/c/2cbf81f76842e46bdf25823c70e1db4044a65678", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/38a327221f7f765e7d853b7bafe47e342441ec85", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/3c0283a59e36e3707c4a81f4952e362d31f876b8", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/5fb2940327722b4684d2f964b54c1c90aa277324", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/6b9e66437cc6123ddedac141e1b8b6fcf57d2972", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/871b8ea8ef39a6c253594649f4339378fad3d0dd", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/a66485a934c7187ae8e36517d40615fa2e961cff", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/b5d141ea15f173f15b9f0a72965902f3428c0d92", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/dd2b888e08d3b3d6aacd65d76cd44fac11da750f", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://cert-portal.siemens.com/productcert/html/ssa-784472.html", "source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-416"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: em28xx: fix use-after-free in em28xx_v4l2_open()\n\nem28xx_v4l2_open() reads dev->v4l2 without holding dev->lock,\ncreating a race with em28xx_v4l2_init()'s error path and\nem28xx_v4l2_fini(), both of which free the em28xx_v4l2 struct\nand set dev->v4l2 to NULL under dev->lock.\n\nThis race leads to two issues:\n - use-after-free in v4l2_fh_init() when accessing vdev->ctrl_handler,\n since the video_device is embedded in the freed em28xx_v4l2 struct.\n - NULL pointer dereference in em28xx_resolution_set() when accessing\n v4l2->norm, since dev->v4l2 has been set to NULL.\n\nFix this by moving the mutex_lock() before the dev->v4l2 read and\nadding a NULL check for dev->v4l2 under the lock."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta: media: em28xx: corregir uso despu\u00e9s de liberaci\u00f3n en em28xx_v4l2_open() em28xx_v4l2_open() lee dev-mayor que v4l2 sin mantener dev -> lock, creando una condici\u00f3n de carrera con la ruta de error de em28xx_v4l2_init() y em28xx_v4l2_fini(), ambos de los cuales liberan la estructura em28xx_v4l2 y establecen dev-mayor que v4l2 a NULL bajo dev -> lock. Esta condici\u00f3n de carrera conduce a dos problemas:\n- uso despu\u00e9s de liberaci\u00f3n en v4l2_fh_init() al acceder a vdev -> ctrl_handler, ya que el video_device est\u00e1 incrustado en la estructura em28xx_v4l2 liberada.\n- desreferencia de puntero NULL en em28xx_resolution_set() al acceder a v4l2 -> norm, ya que dev-mayor que v4l2 ha sido establecido a NULL. Solucionar esto moviendo el mutex_lock() antes de la lectura de dev-mayor que v4l2 y a\u00f1adiendo una comprobaci\u00f3n de NULL para dev-mayor que v4l2 bajo el bloqueo."}], "lastModified": "2026-11-11T23:10:00.263", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "14109CEF-714B-4029-A318-97AA58A01833", "versionEndExcluding": "6.6.136"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A8BAD957-8E20-401C-A129-DFF3655CA0B7", "versionEndExcluding": "6.12.83", "versionStartIncluding": "6.12"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "8126B8B8-6D0B-4443-86C1-672AEE893555", "versionEndExcluding": "6.18.24", "versionStartIncluding": "6.13"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D6A8A074-BBF4-4803-ABED-519A839435BB", "versionEndExcluding": "6.19.14", "versionStartIncluding": "6.19"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "9B5888AB-7403-4335-89E4-21CC0B48366A", "versionEndExcluding": "7.0.1", "versionStartIncluding": "7.0"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}