{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2024-50262", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-10-21T19:36:19.981Z", "datePublished": "2024-11-09T10:17:50.461Z", "dateUpdated": "2026-08-05T11:42:51.880Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:42:51.880Z" }, "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." } ], "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 — the attacker builds the trie with keys 0x00/0 … 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 — 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 — 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", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH" } }, { "other": { "type": "ssvc", "content": { "id": "CVE-2024-50262", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "total" } ], "version": "2.0.3", "timestamp": "2024-12-11T15:09:18.664200Z" } } } ], "problemTypes": [ { "descriptions": [ { "lang": "en", "type": "CWE", "cweId": "CWE-787", "description": "CWE-787 Out-of-bounds Write" } ] } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-12-11T15:18:34.769Z" } }, { "title": "CVE Program Container", "references": [ { "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html" }, { "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html" } ], "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2025-11-03T22:27:42.104Z" } }, { "x_adpType": "supplier", "providerMetadata": { "orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "shortName": "siemens-SADP", "dateUpdated": "2026-05-12T12:00:45.652Z" }, "affected": [ { "vendor": "Siemens", "product": "RUGGEDCOM RST2428P", "versions": [ { "status": "affected", "version": "0", "lessThan": "V3.2", "versionType": "custom" } ], "defaultStatus": "unknown" }, { "vendor": "Siemens", "product": "SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family", "versions": [ { "status": "affected", "version": "0", "lessThan": "V3.2", "versionType": "custom" } ], "defaultStatus": "unknown" }, { "vendor": "Siemens", "product": "SCALANCE XCM-/XRM-/XCH-/XRH-300 family", "versions": [ { "status": "affected", "version": "0", "lessThan": "V3.2", "versionType": "custom" } ], "defaultStatus": "unknown" }, { "vendor": "Siemens", "product": "SIMATIC S7-1500 TM MFP - GNU/Linux subsystem", "versions": [ { "status": "affected", "version": "0", "lessThan": "*", "versionType": "custom" } ], "defaultStatus": "unknown" }, { "vendor": "Siemens", "product": "SIMATIC S7-1500 CPU 1518-4 PN/DP MFP", "versions": [ { "status": "affected", "version": "V3.1.0", "lessThan": "V3.1.5", "versionType": "custom" } ], "defaultStatus": "unknown" }, { "vendor": "Siemens", "product": "SIMATIC S7-1500 CPU 1518-4 PN/DP MFP", "versions": [ { "status": "affected", "version": "V3.1.0", "lessThan": "V3.1.5", "versionType": "custom" } ], "defaultStatus": "unknown" }, { "vendor": "Siemens", "product": "SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP", "versions": [ { "status": "affected", "version": "V3.1.0", "lessThan": "V3.1.5", "versionType": "custom" } ], "defaultStatus": "unknown" }, { "vendor": "Siemens", "product": "SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP", "versions": [ { "status": "affected", "version": "V3.1.0", "lessThan": "V3.1.5", "versionType": "custom" } ], "defaultStatus": "unknown" }, { "vendor": "Siemens", "product": "SIPLUS S7-1500 CPU 1518-4 PN/DP MFP", "versions": [ { "status": "affected", "version": "V3.1.0", "lessThan": "V3.1.5", "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" } ] } ] } }