CVE-2024-50262

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Subsequent calls to trie_get_next_key with _key with\n.prefixlen = 8 make 9 nodes be written on the node stack with size 8."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:L - The vulnerability is reached exclusively through the local `bpf()` syscall (BPF_MAP_GET_NEXT_KEY / BPF_MAP_LOOKUP_BATCH) against an LPM_TRIE map fd. No network-facing code path processes remote data through trie_get_next_key().\nAC:L - The overflow is fully deterministic \u2014 the attacker builds the trie with keys 0x00/0 \u2026 0x00/max_prefixlen and issues one GET_NEXT_KEY with prefixlen == max_prefixlen. No race, no timing dependency, and the attacker also chooses key_size so the allocation sits exactly on a kmalloc bucket boundary, and can repeat the trigger arbitrarily to groom the heap.\nPR:L - Creating the map nominally needs CAP_BPF, but `bpf_token_capable()` honors ns_capable() against a BPF-token user namespace, so a delegated bpffs mount grants it to an unprivileged container process; furthermore `bpf_obj_get()` performs only a file-permission check and `map_get_next_key()` requires only FMODE_CAN_READ, so an unprivileged process holding or opening an existing pinned LPM_TRIE map fd can trigger the write with no capability at all.\nUI:N - Exploitation is entirely self-contained in the attacker's own process \u2014 map creation, element insertion, and the GET_NEXT_KEY call. No victim action of any kind is required.\nS:U - The out-of-bounds write corrupts kernel slab memory within the same kernel security authority; it is a standard local privilege-escalation surface rather than a crossing of a VM, IOMMU, or sandbox boundary.\nC:H - The 8-byte heap overflow overwrites the first field of the adjacent slab object with a pointer to attacker-controlled data, which for the many kmalloc-64/128/256 objects that begin with a pointer yields a fake-object read primitive and, via freelist corruption, arbitrary kernel memory disclosure.\nI:H - This is a controllable out-of-bounds heap write of a valid kernel pointer at a precisely chosen slab bucket boundary, repeatable at will \u2014 a classic path to SLUB freelist corruption, arbitrary write, and control-flow hijack for privilege escalation.\nA:H - Corrupting the head of an adjacent slab object or a SLUB freelist pointer reliably produces kernel oops/panic, and the trigger can be issued repeatedly by any process holding a readable LPM_TRIE map fd."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["kernel/bpf/lpm_trie.c"], "versions": [{"version": "b471f2f1de8b816f1e799b80aa92588f3566e4bd", "lessThan": "e8494ac079814a53fbc2258d2743e720907488ed", "status": "affected", "versionType": "git"}, {"version": "b471f2f1de8b816f1e799b80aa92588f3566e4bd", "lessThan": "91afbc0eb3c90258ae378ae3c6ead3d2371e926d", "status": "affected", "versionType": "git"}, {"version": "b471f2f1de8b816f1e799b80aa92588f3566e4bd", "lessThan": "590976f921723d53ac199c01d5b7b73a94875e68", "status": "affected", "versionType": "git"}, {"version": "b471f2f1de8b816f1e799b80aa92588f3566e4bd", "lessThan": "86c8ebe02d8806dd8878d0063e8e185622ab6ea6", "status": "affected", "versionType": "git"}, {"version": "b471f2f1de8b816f1e799b80aa92588f3566e4bd", "lessThan": "a035df0b98df424559fd383e8e1a268f422ea2ba", "status": "affected", "versionType": "git"}, {"version": "b471f2f1de8b816f1e799b80aa92588f3566e4bd", "lessThan": "90a6e0e1e151ef7a9282e78f54c3091de2dcc99c", "status": "affected", "versionType": "git"}, {"version": "b471f2f1de8b816f1e799b80aa92588f3566e4bd", "lessThan": "c4b4f9a9ab82238cb158fa4fe61a8c0ae21a4980", "status": "affected", "versionType": "git"}, {"version": "b471f2f1de8b816f1e799b80aa92588f3566e4bd", "lessThan": "13400ac8fb80c57c2bfb12ebd35ee121ce9b4d21", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["kernel/bpf/lpm_trie.c"], "versions": [{"version": "4.16", "status": "affected"}, {"version": "0", "lessThan": "4.16", "status": "unaffected", "versionType": "semver"}, {"version": "4.19.323", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.4.285", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.229", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.171", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.116", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.60", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.11.7", "lessThanOrEqual": "6.11.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12", "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": "4.16", "versionEndExcluding": "4.19.323"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.16", "versionEndExcluding": "5.4.285"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.16", "versionEndExcluding": "5.10.229"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.16", "versionEndExcluding": "5.15.171"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.16", "versionEndExcluding": "6.1.116"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.16", "versionEndExcluding": "6.6.60"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.16", "versionEndExcluding": "6.11.7"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.16", "versionEndExcluding": "6.12"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/e8494ac079814a53fbc2258d2743e720907488ed"}, {"url": "https://git.kernel.org/stable/c/91afbc0eb3c90258ae378ae3c6ead3d2371e926d"}, {"url": "https://git.kernel.org/stable/c/590976f921723d53ac199c01d5b7b73a94875e68"}, {"url": "https://git.kernel.org/stable/c/86c8ebe02d8806dd8878d0063e8e185622ab6ea6"}, {"url": "https://git.kernel.org/stable/c/a035df0b98df424559fd383e8e1a268f422ea2ba"}, {"url": "https://git.kernel.org/stable/c/90a6e0e1e151ef7a9282e78f54c3091de2dcc99c"}, {"url": "https://git.kernel.org/stable/c/c4b4f9a9ab82238cb158fa4fe61a8c0ae21a4980"}, {"url": "https://git.kernel.org/stable/c/13400ac8fb80c57c2bfb12ebd35ee121ce9b4d21"}], "title": "bpf: Fix out-of-bounds write in trie_get_next_key()", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"cvssV3_1": {"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", 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XCM-/XRM-/XCH-/XRH-300 family", "versions": [{"status": "affected", "version": "0", "lessThan": "V3.2", "versionType": "custom"}], "defaultStatus": "unknown"}], "references": [{"url": "https://cert-portal.siemens.com/productcert/html/ssa-398330.html"}, {"url": "https://cert-portal.siemens.com/productcert/html/ssa-265688.html"}, {"url": "https://cert-portal.siemens.com/productcert/html/ssa-355557.html"}]}]}}

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No network-facing code path processes remote data through trie_get_next_key().\nAC:L - The overflow is fully deterministic \u2014 the attacker builds the trie with keys 0x00/0 \u2026 0x00/max_prefixlen and issues one GET_NEXT_KEY with prefixlen == max_prefixlen. No race, no timing dependency, and the attacker also chooses key_size so the allocation sits exactly on a kmalloc bucket boundary, and can repeat the trigger arbitrarily to groom the heap.\nPR:L - Creating the map nominally needs CAP_BPF, but `bpf_token_capable()` honors ns_capable() against a BPF-token user namespace, so a delegated bpffs mount grants it to an unprivileged container process; furthermore `bpf_obj_get()` performs only a file-permission check and `map_get_next_key()` requires only FMODE_CAN_READ, so an unprivileged process holding or opening an existing pinned LPM_TRIE map fd can trigger the write with no capability at all.\nUI:N - Exploitation is entirely self-contained in the attacker's own process \u2014 map creation, element insertion, and the GET_NEXT_KEY call. No victim action of any kind is required.\nS:U - The out-of-bounds write corrupts kernel slab memory within the same kernel security authority; it is a standard local privilege-escalation surface rather than a crossing of a VM, IOMMU, or sandbox boundary.\nC:H - The 8-byte heap overflow overwrites the first field of the adjacent slab object with a pointer to attacker-controlled data, which for the many kmalloc-64/128/256 objects that begin with a pointer yields a fake-object read primitive and, via freelist corruption, arbitrary kernel memory disclosure.\nI:H - This is a controllable out-of-bounds heap write of a valid kernel pointer at a precisely chosen slab bucket boundary, repeatable at will \u2014 a classic path to SLUB freelist corruption, arbitrary write, and control-flow hijack for privilege escalation.\nA:H - Corrupting the head of an adjacent slab object or a SLUB freelist pointer reliably produces kernel oops/panic, and the trigger can be issued repeatedly by any process holding a readable LPM_TRIE map fd."}]}], "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "b471f2f1de8b816f1e799b80aa92588f3566e4bd", "lessThan": "e8494ac079814a53fbc2258d2743e720907488ed", "versionType": "git"}, {"status": "affected", "version": "b471f2f1de8b816f1e799b80aa92588f3566e4bd", "lessThan": "91afbc0eb3c90258ae378ae3c6ead3d2371e926d", "versionType": "git"}, {"status": "affected", "version": "b471f2f1de8b816f1e799b80aa92588f3566e4bd", "lessThan": "590976f921723d53ac199c01d5b7b73a94875e68", "versionType": "git"}, {"status": "affected", "version": "b471f2f1de8b816f1e799b80aa92588f3566e4bd", "lessThan": "86c8ebe02d8806dd8878d0063e8e185622ab6ea6", "versionType": "git"}, {"status": "affected", "version": "b471f2f1de8b816f1e799b80aa92588f3566e4bd", "lessThan": "a035df0b98df424559fd383e8e1a268f422ea2ba", "versionType": "git"}, {"status": "affected", "version": "b471f2f1de8b816f1e799b80aa92588f3566e4bd", "lessThan": "90a6e0e1e151ef7a9282e78f54c3091de2dcc99c", "versionType": "git"}, {"status": "affected", "version": "b471f2f1de8b816f1e799b80aa92588f3566e4bd", "lessThan": "c4b4f9a9ab82238cb158fa4fe61a8c0ae21a4980", "versionType": "git"}, {"status": "affected", "version": "b471f2f1de8b816f1e799b80aa92588f3566e4bd", "lessThan": "13400ac8fb80c57c2bfb12ebd35ee121ce9b4d21", "versionType": "git"}], "programFiles": ["kernel/bpf/lpm_trie.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "4.16"}, {"status": "unaffected", "version": "0", "lessThan": "4.16", "versionType": "semver"}, {"status": "unaffected", "version": "4.19.323", "versionType": "semver", "lessThanOrEqual": "4.19.*"}, {"status": "unaffected", "version": "5.4.285", "versionType": "semver", "lessThanOrEqual": "5.4.*"}, {"status": "unaffected", "version": "5.10.229", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.171", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.116", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.60", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.11.7", "versionType": "semver", "lessThanOrEqual": "6.11.*"}, {"status": "unaffected", "version": "6.12", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["kernel/bpf/lpm_trie.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/e8494ac079814a53fbc2258d2743e720907488ed"}, {"url": "https://git.kernel.org/stable/c/91afbc0eb3c90258ae378ae3c6ead3d2371e926d"}, {"url": "https://git.kernel.org/stable/c/590976f921723d53ac199c01d5b7b73a94875e68"}, {"url": "https://git.kernel.org/stable/c/86c8ebe02d8806dd8878d0063e8e185622ab6ea6"}, {"url": "https://git.kernel.org/stable/c/a035df0b98df424559fd383e8e1a268f422ea2ba"}, {"url": "https://git.kernel.org/stable/c/90a6e0e1e151ef7a9282e78f54c3091de2dcc99c"}, {"url": "https://git.kernel.org/stable/c/c4b4f9a9ab82238cb158fa4fe61a8c0ae21a4980"}, {"url": "https://git.kernel.org/stable/c/13400ac8fb80c57c2bfb12ebd35ee121ce9b4d21"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Fix out-of-bounds write in trie_get_next_key()\n\ntrie_get_next_key() allocates a node stack with size trie->max_prefixlen,\nwhile it writes (trie->max_prefixlen + 1) nodes to the stack when it has\nfull paths from the root to leaves. For example, consider a trie with\nmax_prefixlen is 8, and the nodes with key 0x00/0, 0x00/1, 0x00/2, ...\n0x00/8 inserted. Subsequent calls to trie_get_next_key with _key with\n.prefixlen = 8 make 9 nodes be written on the node stack with size 8."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "4.19.323", "versionStartIncluding": "4.16"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.4.285", "versionStartIncluding": "4.16"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.10.229", "versionStartIncluding": "4.16"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.171", "versionStartIncluding": "4.16"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1.116", "versionStartIncluding": "4.16"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6.60", "versionStartIncluding": "4.16"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.11.7", "versionStartIncluding": "4.16"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.12", "versionStartIncluding": "4.16"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:42:51.880Z"}}}, "cveMetadata": {"cveId": "CVE-2024-50262", "state": "PUBLISHED", "dateUpdated": "2026-10-15T00:57:42.947Z", "dateReserved": "2024-10-21T19:36:19.981Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2024-11-09T10:17:50.461Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

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For example, consider a trie with\nmax_prefixlen is 8, and the nodes with key 0x00/0, 0x00/1, 0x00/2, ...\n0x00/8 inserted. Subsequent calls to trie_get_next_key with _key with\n.prefixlen = 8 make 9 nodes be written on the node stack with size 8."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: bpf: Se corrige la escritura fuera de los l\u00edmites en trie_get_next_key() trie_get_next_key() asigna una pila de nodos con tama\u00f1o trie->max_prefixlen, mientras escribe (trie->max_prefixlen + 1) nodos en la pila cuando tiene rutas completas desde la ra\u00edz hasta las hojas. Por ejemplo, considere un trie con max_prefixlen es 8, y los nodos con clave 0x00/0, 0x00/1, 0x00/2, ... 0x00/8 insertados. Las llamadas posteriores a trie_get_next_key con _key con .prefixlen = 8 hacen que se escriban 9 nodos en la pila de nodos con tama\u00f1o 8."}], "id": "CVE-2024-50262", "lastModified": "2026-10-15T01:19:11.013", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2024-50262", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2024-12-11T15:09:18.664200Z", "version": "2.0.3"}}]}, "published": "2024-11-09T11:15:11.687", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/13400ac8fb80c57c2bfb12ebd35ee121ce9b4d21"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/590976f921723d53ac199c01d5b7b73a94875e68"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/86c8ebe02d8806dd8878d0063e8e185622ab6ea6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/90a6e0e1e151ef7a9282e78f54c3091de2dcc99c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/91afbc0eb3c90258ae378ae3c6ead3d2371e926d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a035df0b98df424559fd383e8e1a268f422ea2ba"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/c4b4f9a9ab82238cb158fa4fe61a8c0ae21a4980"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e8494ac079814a53fbc2258d2743e720907488ed"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"}, {"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "url": "https://cert-portal.siemens.com/productcert/html/ssa-265688.html"}, {"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "url": "https://cert-portal.siemens.com/productcert/html/ssa-355557.html"}, {"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "url": "https://cert-portal.siemens.com/productcert/html/ssa-398330.html"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-787"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-787"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"affected_release": [{"advisory": "RHSA-2024:11486", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-503.19.1.el9_5", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2024-12-19T00:00:00Z"}, {"advisory": "RHSA-2024:11486", "cpe": "cpe:/o:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-503.19.1.el9_5", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2024-12-19T00:00:00Z"}, {"advisory": "RHSA-2024:10942", "cpe": "cpe:/a:redhat:rhel_eus:9.4", "package": "kernel-0:5.14.0-427.48.1.el9_4", "product_name": "Red Hat Enterprise Linux 9.4 Extended Update Support", "release_date": "2024-12-11T00:00:00Z"}], "bugzilla": {"description": "kernel: bpf: Fix out-of-bounds write in trie_get_next_key()", "id": "2324892", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2324892"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.7", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H", "status": "verified"}, "cwe": "CWE-787", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nbpf: Fix out-of-bounds write in trie_get_next_key()\ntrie_get_next_key() allocates a node stack with size trie->max_prefixlen,\nwhile it writes (trie->max_prefixlen + 1) nodes to the stack when it has\nfull paths from the root to leaves. For example, consider a trie with\nmax_prefixlen is 8, and the nodes with key 0x00/0, 0x00/1, 0x00/2, ...\n0x00/8 inserted. Subsequent calls to trie_get_next_key with _key with\n.prefixlen = 8 make 9 nodes be written on the node stack with size 8."], "name": "CVE-2024-50262", "package_state": [{"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": "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": "Will not fix", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Will not fix", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-11-09T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-50262\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-50262\nhttps://lore.kernel.org/linux-cve-announce/2024110955-CVE-2024-50262-9cd7@gregkh/T"], "statement": "The default Red Hat Enterprise Linux kernel prevents unprivileged users from being able to use eBPF by the kernel.unprivileged_bpf_disabled sysctl. This would require a privileged user with CAP_SYS_ADMIN or root to be able to abuse this flaw reducing its attack space.\nFor the Red Hat Enterprise Linux 9 to confirm the current state, inspect the sysctl with the command:\ncat /proc/sys/kernel/unprivileged_bpf_disabled\nThe setting of 1 would mean that unprivileged users can not use eBPF, mitigating the flaw.", "threat_severity": "Moderate"}

{}