cve-2024-35895
Vulnerability from cvelistv5
Published
2024-05-19 08:34
Modified
2024-12-27 12:16
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: bpf, sockmap: Prevent lock inversion deadlock in map delete elem syzkaller started using corpuses where a BPF tracing program deletes elements from a sockmap/sockhash map. Because BPF tracing programs can be invoked from any interrupt context, locks taken during a map_delete_elem operation must be hardirq-safe. Otherwise a deadlock due to lock inversion is possible, as reported by lockdep: CPU0 CPU1 ---- ---- lock(&htab->buckets[i].lock); local_irq_disable(); lock(&host->lock); lock(&htab->buckets[i].lock); <Interrupt> lock(&host->lock); Locks in sockmap are hardirq-unsafe by design. We expects elements to be deleted from sockmap/sockhash only in task (normal) context with interrupts enabled, or in softirq context. Detect when map_delete_elem operation is invoked from a context which is _not_ hardirq-unsafe, that is interrupts are disabled, and bail out with an error. Note that map updates are not affected by this issue. BPF verifier does not allow updating sockmap/sockhash from a BPF tracing program today.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/668b3074aa14829e2ac2759799537a93b60fef86Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6af057ccdd8e7619960aca1f0428339f213b31cdPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a44770fed86515eedb5a7c00b787f847ebb134a5Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d1e73fb19a4c872d7a399ad3c66e8ca30e0875ecPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/dd54b48db0c822ae7b520bc80751f0a0a173ef75Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f7990498b05ac41f7d6a190dc0418ef1d21bf058Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ff91059932401894e6c86341915615c5eb0eca48Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/668b3074aa14829e2ac2759799537a93b60fef86Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/6af057ccdd8e7619960aca1f0428339f213b31cdPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/a44770fed86515eedb5a7c00b787f847ebb134a5Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/d1e73fb19a4c872d7a399ad3c66e8ca30e0875ecPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/dd54b48db0c822ae7b520bc80751f0a0a173ef75Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/f7990498b05ac41f7d6a190dc0418ef1d21bf058Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/ff91059932401894e6c86341915615c5eb0eca48Patch
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2024/06/msg00017.htmlMailing List
Impacted products
Vendor Product Version
Linux Linux Version: 604326b41a6fb9b4a78b6179335decee0365cd8c
Version: 604326b41a6fb9b4a78b6179335decee0365cd8c
Version: 604326b41a6fb9b4a78b6179335decee0365cd8c
Version: 604326b41a6fb9b4a78b6179335decee0365cd8c
Version: 604326b41a6fb9b4a78b6179335decee0365cd8c
Version: 604326b41a6fb9b4a78b6179335decee0365cd8c
Version: 604326b41a6fb9b4a78b6179335decee0365cd8c
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   Linux Linux Version: 4.20
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Otherwise a deadlock due to lock inversion\\nis possible, as reported by lockdep:\\n\\n       CPU0                    CPU1\\n       ----                    ----\\n  lock(\u0026htab-\u003ebuckets[i].lock);\\n                               local_irq_disable();\\n                               lock(\u0026host-\u003elock);\\n                               lock(\u0026htab-\u003ebuckets[i].lock);\\n  \u003cInterrupt\u003e\\n    lock(\u0026host-\u003elock);\\n\\nLocks in sockmap are hardirq-unsafe by design. We expects elements to be\\ndeleted from sockmap/sockhash only in task (normal) context with interrupts\\nenabled, or in softirq context.\\n\\nDetect when map_delete_elem operation is invoked from a context which is\\n_not_ hardirq-unsafe, that is interrupts are disabled, and bail out with an\\nerror.\\n\\nNote that map updates are not affected by this issue. BPF verifier does not\\nallow updating sockmap/sockhash from a BPF tracing program today.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: bpf, sockmap: Evitar el punto muerto de inversi\u00f3n de bloqueo en la eliminaci\u00f3n del mapa elem syzkaller comenz\u00f3 a usar corpus donde un programa de seguimiento BPF elimina elementos de un mapa sockmap/sockhash. Debido a que los programas de seguimiento BPF se pueden invocar desde cualquier contexto de interrupci\u00f3n, los bloqueos realizados durante una operaci\u00f3n map_delete_elem deben ser seguros. De lo contrario, es posible que se produzca un punto muerto debido a la inversi\u00f3n del bloqueo, como lo informa lockdep: CPU0 CPU1 ---- ---- lock(\u0026amp;htab-\u0026gt;buckets[i].lock); local_irq_disable(); bloquear(\u0026amp;host-\u0026gt;bloquear); lock(\u0026amp;htab-\u0026gt;cubos[i].lock);  bloqueo(\u0026amp;host-\u0026gt;bloqueo); Los bloqueos en sockmap son dif\u00edciles de inseguro por dise\u00f1o. Esperamos que los elementos se eliminen de sockmap/sockhash solo en el contexto de la tarea (normal) con las interrupciones habilitadas o en el contexto de softirq. Detecta cu\u00e1ndo se invoca la operaci\u00f3n map_delete_elem desde un contexto que _no_ es hardirq-inseguro, es decir, las interrupciones est\u00e1n deshabilitadas y sale con un error. Tenga en cuenta que las actualizaciones de mapas no se ven afectadas por este problema. El verificador de BPF no permite actualizar sockmap/sockhash desde un programa de seguimiento de BPF en la actualidad.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-667\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.20\",\"versionEndExcluding\":\"5.4.274\",\"matchCriteriaId\":\"F45A0F3C-C16D-49C4-86D6-D021C3D4B834\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.5\",\"versionEndExcluding\":\"5.10.215\",\"matchCriteriaId\":\"9CD5894E-58E9-4B4A-B0F4-3E6BC134B8F5\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.154\",\"matchCriteriaId\":\"577E212E-7E95-4A71-9B5C-F1D1A3AFFF46\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"6.1.85\",\"matchCriteriaId\":\"325665BF-2409-49D9-B391-39AD4566FDBD\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.6.26\",\"matchCriteriaId\":\"C520696A-A594-4FFC-A32D-12DA535CE911\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.8.5\",\"matchCriteriaId\":\"DBD6C99E-4250-4DFE-8447-FF2075939D10\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.9:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"22BEDD49-2C6D-402D-9DBF-6646F6ECD10B\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.9:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"DF73CB2A-DFFD-46FB-9BFE-AA394F27EA37\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"07B237A9-69A3-4A9C-9DA0-4E06BD37AE73\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/668b3074aa14829e2ac2759799537a93b60fef86\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/6af057ccdd8e7619960aca1f0428339f213b31cd\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/a44770fed86515eedb5a7c00b787f847ebb134a5\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/d1e73fb19a4c872d7a399ad3c66e8ca30e0875ec\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/dd54b48db0c822ae7b520bc80751f0a0a173ef75\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/f7990498b05ac41f7d6a190dc0418ef1d21bf058\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/ff91059932401894e6c86341915615c5eb0eca48\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/668b3074aa14829e2ac2759799537a93b60fef86\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/6af057ccdd8e7619960aca1f0428339f213b31cd\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/a44770fed86515eedb5a7c00b787f847ebb134a5\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/d1e73fb19a4c872d7a399ad3c66e8ca30e0875ec\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/dd54b48db0c822ae7b520bc80751f0a0a173ef75\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/f7990498b05ac41f7d6a190dc0418ef1d21bf058\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/ff91059932401894e6c86341915615c5eb0eca48\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Mailing 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    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://git.kernel.org/stable/c/f7990498b05ac41f7d6a190dc0418ef1d21bf058\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/dd54b48db0c822ae7b520bc80751f0a0a173ef75\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/d1e73fb19a4c872d7a399ad3c66e8ca30e0875ec\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/a44770fed86515eedb5a7c00b787f847ebb134a5\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/668b3074aa14829e2ac2759799537a93b60fef86\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/6af057ccdd8e7619960aca1f0428339f213b31cd\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/ff91059932401894e6c86341915615c5eb0eca48\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html\", \"tags\": [\"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-02T03:21:48.577Z\"}}, {\"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-35895\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-05-23T19:25:39.256006Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-05-23T19:25:43.605Z\"}, \"title\": \"CISA ADP Vulnrichment\"}], \"cna\": {\"title\": \"bpf, sockmap: Prevent lock inversion deadlock in map delete elem\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"604326b41a6fb9b4a78b6179335decee0365cd8c\", \"lessThan\": \"f7990498b05ac41f7d6a190dc0418ef1d21bf058\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"604326b41a6fb9b4a78b6179335decee0365cd8c\", \"lessThan\": \"dd54b48db0c822ae7b520bc80751f0a0a173ef75\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"604326b41a6fb9b4a78b6179335decee0365cd8c\", \"lessThan\": \"d1e73fb19a4c872d7a399ad3c66e8ca30e0875ec\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"604326b41a6fb9b4a78b6179335decee0365cd8c\", \"lessThan\": \"a44770fed86515eedb5a7c00b787f847ebb134a5\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"604326b41a6fb9b4a78b6179335decee0365cd8c\", \"lessThan\": \"668b3074aa14829e2ac2759799537a93b60fef86\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"604326b41a6fb9b4a78b6179335decee0365cd8c\", \"lessThan\": \"6af057ccdd8e7619960aca1f0428339f213b31cd\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"604326b41a6fb9b4a78b6179335decee0365cd8c\", \"lessThan\": \"ff91059932401894e6c86341915615c5eb0eca48\", \"versionType\": \"git\"}], \"programFiles\": [\"net/core/sock_map.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"4.20\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"4.20\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.4.274\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.4.*\"}, {\"status\": \"unaffected\", \"version\": \"5.10.215\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.154\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.85\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.26\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.8.5\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.8.*\"}, {\"status\": \"unaffected\", \"version\": \"6.9\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"net/core/sock_map.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/f7990498b05ac41f7d6a190dc0418ef1d21bf058\"}, {\"url\": \"https://git.kernel.org/stable/c/dd54b48db0c822ae7b520bc80751f0a0a173ef75\"}, {\"url\": \"https://git.kernel.org/stable/c/d1e73fb19a4c872d7a399ad3c66e8ca30e0875ec\"}, {\"url\": \"https://git.kernel.org/stable/c/a44770fed86515eedb5a7c00b787f847ebb134a5\"}, {\"url\": \"https://git.kernel.org/stable/c/668b3074aa14829e2ac2759799537a93b60fef86\"}, {\"url\": \"https://git.kernel.org/stable/c/6af057ccdd8e7619960aca1f0428339f213b31cd\"}, {\"url\": \"https://git.kernel.org/stable/c/ff91059932401894e6c86341915615c5eb0eca48\"}], \"x_generator\": {\"engine\": \"bippy-5f407fcff5a0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nbpf, sockmap: Prevent lock inversion deadlock in map delete elem\\n\\nsyzkaller started using corpuses where a BPF tracing program deletes\\nelements from a sockmap/sockhash map. Because BPF tracing programs can be\\ninvoked from any interrupt context, locks taken during a map_delete_elem\\noperation must be hardirq-safe. Otherwise a deadlock due to lock inversion\\nis possible, as reported by lockdep:\\n\\n       CPU0                    CPU1\\n       ----                    ----\\n  lock(\u0026htab-\u003ebuckets[i].lock);\\n                               local_irq_disable();\\n                               lock(\u0026host-\u003elock);\\n                               lock(\u0026htab-\u003ebuckets[i].lock);\\n  \u003cInterrupt\u003e\\n    lock(\u0026host-\u003elock);\\n\\nLocks in sockmap are hardirq-unsafe by design. We expects elements to be\\ndeleted from sockmap/sockhash only in task (normal) context with interrupts\\nenabled, or in softirq context.\\n\\nDetect when map_delete_elem operation is invoked from a context which is\\n_not_ hardirq-unsafe, that is interrupts are disabled, and bail out with an\\nerror.\\n\\nNote that map updates are not affected by this issue. BPF verifier does not\\nallow updating sockmap/sockhash from a BPF tracing program today.\"}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2024-12-27T12:16:50.301Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-35895\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2024-12-27T12:16:50.301Z\", \"dateReserved\": \"2024-05-17T13:50:33.113Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-05-19T08:34:50.276Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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