{"dataType": "CVE_RECORD", "cveMetadata": {"cveId": "CVE-2024-35895", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-05-17T13:50:33.113Z", "datePublished": "2024-05-19T08:34:50.276Z", "dateUpdated": "2024-11-05T09:24:37.511Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2024-11-05T09:24:37.511Z"}, "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(&htab->buckets[i].lock);\n local_irq_disable();\n lock(&host->lock);\n lock(&htab->buckets[i].lock);\n <Interrupt>\n lock(&host->lock);\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."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/core/sock_map.c"], "versions": [{"version": "604326b41a6f", "lessThan": "f7990498b05a", "status": "affected", "versionType": "git"}, {"version": "604326b41a6f", "lessThan": "dd54b48db0c8", "status": "affected", "versionType": "git"}, {"version": "604326b41a6f", "lessThan": "d1e73fb19a4c", "status": "affected", "versionType": "git"}, {"version": "604326b41a6f", "lessThan": "a44770fed865", "status": "affected", "versionType": "git"}, {"version": "604326b41a6f", "lessThan": "668b3074aa14", "status": "affected", "versionType": "git"}, {"version": "604326b41a6f", "lessThan": "913c30f827e1", "status": "affected", "versionType": "git"}, {"version": "604326b41a6f", "lessThan": "6af057ccdd8e", "status": "affected", "versionType": "git"}, {"version": "604326b41a6f", "lessThan": "ff9105993240", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/core/sock_map.c"], "versions": [{"version": "4.20", "status": "affected"}, {"version": "0", "lessThan": "4.20", "status": "unaffected", "versionType": "semver"}, {"version": "5.4.274", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.215", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.154", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.85", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.26", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.48", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.8.5", "lessThanOrEqual": "6.8.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.9", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "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/913c30f827e17d8cda1da6eeb990f350d36cb69b"}, {"url": "https://git.kernel.org/stable/c/6af057ccdd8e7619960aca1f0428339f213b31cd"}, {"url": "https://git.kernel.org/stable/c/ff91059932401894e6c86341915615c5eb0eca48"}], "title": "bpf, sockmap: Prevent lock inversion deadlock in map delete elem", "x_generator": {"engine": "bippy-9e1c9544281a"}}, "adp": [{"title": "CISA ADP Vulnrichment", "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": "2024-06-04T17:34:48.419Z"}}, {"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T03:21:48.577Z"}, "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"]}]}]}, "dataVersion": "5.1"}

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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(&htab->buckets[i].lock);\n local_irq_disable();\n lock(&host->lock);\n lock(&htab->buckets[i].lock);\n <Interrupt>\n lock(&host->lock);\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": "2024-08-29T16:32:43.627Z"}}}, "cveMetadata": {"cveId": "CVE-2024-35895", "state": "PUBLISHED", "dateUpdated": "2024-08-29T16:32:43.627Z", "dateReserved": "2024-05-17T13:50:33.113Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2024-05-19T08:34:50.276Z", "assignerShortName": "Linux"}, "dataVersion": "5.1"}

{"cveTags": [], "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(&htab->buckets[i].lock);\n local_irq_disable();\n lock(&host->lock);\n lock(&htab->buckets[i].lock);\n <Interrupt>\n lock(&host->lock);\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(&amp;htab-&gt;buckets[i].lock); local_irq_disable(); bloquear(&amp;host-&gt;bloquear); lock(&amp;htab-&gt;cubos[i].lock); bloqueo(&amp;host-&gt;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."}], "id": "CVE-2024-35895", "lastModified": "2024-08-29T17:15:07.480", "metrics": {}, "published": "2024-05-19T09:15:10.477", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/668b3074aa14829e2ac2759799537a93b60fef86"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/6af057ccdd8e7619960aca1f0428339f213b31cd"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/913c30f827e17d8cda1da6eeb990f350d36cb69b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a44770fed86515eedb5a7c00b787f847ebb134a5"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d1e73fb19a4c872d7a399ad3c66e8ca30e0875ec"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/dd54b48db0c822ae7b520bc80751f0a0a173ef75"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f7990498b05ac41f7d6a190dc0418ef1d21bf058"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ff91059932401894e6c86341915615c5eb0eca48"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{"affected_release": [{"advisory": "RHSA-2024:6997", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-427.37.1.el9_4", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2024-09-24T00:00:00Z"}, {"advisory": "RHSA-2024:6997", "cpe": "cpe:/o:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-427.37.1.el9_4", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2024-09-24T00:00:00Z"}, {"advisory": "RHSA-2024:6267", "cpe": "cpe:/a:redhat:rhel_eus:9.2", "package": "kernel-0:5.14.0-284.82.1.el9_2", "product_name": "Red Hat Enterprise Linux 9.2 Extended Update Support", "release_date": "2024-09-04T00:00:00Z"}, {"advisory": "RHSA-2024:6268", "cpe": "cpe:/a:redhat:rhel_eus:9.2::nfv", "package": "kernel-rt-0:5.14.0-284.82.1.rt14.367.el9_2", "product_name": "Red Hat Enterprise Linux 9.2 Extended Update Support", "release_date": "2024-09-04T00:00:00Z"}], "bugzilla": {"description": "kernel: bpf, sockmap: Prevent lock inversion deadlock in map delete elem", "id": "2281677", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2281677"}, "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": "verified"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\nbpf, sockmap: Prevent lock inversion deadlock in map delete elem\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:\nCPU0 CPU1\n---- ----\nlock(&htab->buckets[i].lock);\nlocal_irq_disable();\nlock(&host->lock);\nlock(&htab->buckets[i].lock);\n<Interrupt>\nlock(&host->lock);\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.\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.\nNote that map updates are not affected by this issue. BPF verifier does not\nallow updating sockmap/sockhash from a BPF tracing program today."], "name": "CVE-2024-35895", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Under investigation", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Under investigation", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Under investigation", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-05-19T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-35895\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-35895\nhttps://lore.kernel.org/linux-cve-announce/2024051950-CVE-2024-35895-cb33@gregkh/T"], "threat_severity": "Moderate", "upstream_fix": "kernel 5.4.274, kernel 5.10.215, kernel 5.15.154, kernel 6.1.85, kernel 6.6.26, kernel 6.8.5, kernel 6.9"}