CVE-2026-46249

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When AF and PF drivers\nare built as modules, the PF driver may probe before AF reinitializes\nthe hardware.\n\nThe PF driver treats the RVUM block revision as an indication that AF\ninitialization is complete. If this value is left uncleared at shutdown,\nPF may incorrectly assume AF is ready and access stale hardware state,\nleading to a crash.\n\nClear the RVUM block revision during AF shutdown to avoid PF\nmis-detecting AF readiness after kexec."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/ethernet/marvell/octeontx2/af/rvu.c"], "versions": [{"version": "54494aa5d1e68945dc79feb7c8461cd382e11d8a", "lessThan": "b7605b9301abc18fbbf2b0e23fdd281fc768955d", "status": "affected", "versionType": "git"}, {"version": "54494aa5d1e68945dc79feb7c8461cd382e11d8a", "lessThan": "9769a09afda20a006b528b9e723effcae45965b2", "status": "affected", "versionType": "git"}, {"version": "54494aa5d1e68945dc79feb7c8461cd382e11d8a", "lessThan": "57821d1436ba1c6a6973aa32d54166fdec35558c", "status": "affected", "versionType": "git"}, {"version": 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crash with kexec kernel booting", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-46249", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-11-06T16:12:55.966517Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-11-06T16:13:46.431Z"}}]}}

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When AF and PF drivers\nare built as modules, the PF driver may probe before AF reinitializes\nthe hardware.\n\nThe PF driver treats the RVUM block revision as an indication that AF\ninitialization is complete. If this value is left uncleared at shutdown,\nPF may incorrectly assume AF is ready and access stale hardware state,\nleading to a crash.\n\nClear the RVUM block revision during AF shutdown to avoid PF\nmis-detecting AF readiness after kexec."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.10.252", "versionStartIncluding": "4.20"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.202", "versionStartIncluding": "4.20"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1.165", "versionStartIncluding": "4.20"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6.128", "versionStartIncluding": "4.20"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.12.75", "versionStartIncluding": "4.20"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.18.14", "versionStartIncluding": "4.20"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.19.4", "versionStartIncluding": "4.20"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.0", "versionStartIncluding": "4.20"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-06-03T15:49:45.252Z"}}}, "cveMetadata": {"cveId": "CVE-2026-46249", "state": "PUBLISHED", "dateUpdated": "2026-11-06T16:13:46.431Z", "dateReserved": "2026-05-13T15:03:33.107Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2026-06-03T15:49:45.252Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

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When AF and PF drivers\nare built as modules, the PF driver may probe before AF reinitializes\nthe hardware.\n\nThe PF driver treats the RVUM block revision as an indication that AF\ninitialization is complete. If this value is left uncleared at shutdown,\nPF may incorrectly assume AF is ready and access stale hardware state,\nleading to a crash.\n\nClear the RVUM block revision during AF shutdown to avoid PF\nmis-detecting AF readiness after kexec."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nocteontx2-af: Soluci\u00f3n a la ca\u00edda del controlador PF con el arranque del kernel kexec\n\nDurante un reinicio kexec, el hardware no se apaga y enciende, por lo que el estado de AF del kernel antiguo puede persistir en el nuevo kernel. Cuando los controladores AF y PF se compilan como m\u00f3dulos, el controlador PF puede sondear antes de que AF reinicialice el hardware.\n\nEl controlador PF trata la revisi\u00f3n del bloque RVUM como una indicaci\u00f3n de que la inicializaci\u00f3n de AF est\u00e1 completa. Si este valor se deja sin borrar al apagar, PF puede asumir incorrectamente que AF est\u00e1 listo y acceder a un estado de hardware obsoleto, lo que lleva a una ca\u00edda.\n\nBorrar la revisi\u00f3n del bloque RVUM durante el apagado de AF para evitar que PF detecte incorrectamente la disponibilidad de AF despu\u00e9s de kexec."}], "id": "CVE-2026-46249", "lastModified": "2026-11-06T17:17:53.523", "metrics": {"cvssMetricV31": [{"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-2026-46249", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-11-06T16:12:55.966517Z", "version": "2.0.3"}}]}, "published": "2026-06-03T18:16:25.237", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/1370736836a18b5e0cd74bcc9cffe11d21f1fe79"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/2d2d574309e3ae84ee794869a5da8b4c38753a94"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/57821d1436ba1c6a6973aa32d54166fdec35558c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/7d56ba306e93d04696718963fb4cda2883ee7585"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/8b5ed7c5417b7013d35b6f2507dab739013ba1a9"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/9769a09afda20a006b528b9e723effcae45965b2"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/9c3398e5b3a914b74276d44ab54c49123b89c61a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/b7605b9301abc18fbbf2b0e23fdd281fc768955d"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: octeontx2-af: Fix PF driver crash with kexec kernel booting", "id": "2484476", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2484476"}, "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-909", "details": ["A flaw was found in the Linux kernel's octeontx2-af PF driver. This vulnerability occurs during a kexec reboot when the hardware is not power-cycled, causing the AF state from the old kernel to persist. If the RVUM block revision is not cleared during AF shutdown, the PF driver may incorrectly assume the AF is ready and access stale hardware state. This can lead to a system crash, resulting in a Denial of Service (DoS)."], "name": "CVE-2026-46249", "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": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "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": "2026-06-03T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-46249\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-46249\nhttps://lore.kernel.org/linux-cve-announce/2026060334-CVE-2026-46249-ade7@gregkh/T"], "threat_severity": "Low"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[54494aa5d1e68945dc79feb7c8461cd382e11d8a,b7605b9301abc18fbbf2b0e23fdd281fc768955d)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[54494aa5d1e68945dc79feb7c8461cd382e11d8a,9769a09afda20a006b528b9e723effcae45965b2)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[54494aa5d1e68945dc79feb7c8461cd382e11d8a,57821d1436ba1c6a6973aa32d54166fdec35558c)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[54494aa5d1e68945dc79feb7c8461cd382e11d8a,8b5ed7c5417b7013d35b6f2507dab739013ba1a9)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[54494aa5d1e68945dc79feb7c8461cd382e11d8a,7d56ba306e93d04696718963fb4cda2883ee7585)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[54494aa5d1e68945dc79feb7c8461cd382e11d8a,9c3398e5b3a914b74276d44ab54c49123b89c61a)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[54494aa5d1e68945dc79feb7c8461cd382e11d8a,1370736836a18b5e0cd74bcc9cffe11d21f1fe79)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[54494aa5d1e68945dc79feb7c8461cd382e11d8a,2d2d574309e3ae84ee794869a5da8b4c38753a94)"}}], "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": "4.20"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,4.20)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.10.252,5.11.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.15.202,5.16.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.1.165,6.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.128,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.75,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.14,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.19.4,6.20.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.0,*]"}}], "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": "2026-06-03T19:00:15.379716+00:00", "updated": "2026-06-09T23:15:16.735646+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}