{ "dataType": "CVE_RECORD", "cveMetadata": { "cveId": "CVE-2024-26925", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-02-19T14:20:24.194Z", "datePublished": "2024-04-24T21:49:23.251Z", "dateUpdated": "2026-08-05T11:28:23.459Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:28:23.459Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nf_tables: release mutex after nft_gc_seq_end from abort path\n\nThe commit mutex should not be released during the critical section\nbetween nft_gc_seq_begin() and nft_gc_seq_end(), otherwise, async GC\nworker could collect expired objects and get the released commit lock\nwithin the same GC sequence.\n\nnf_tables_module_autoload() temporarily releases the mutex to load\nmodule dependencies, then it goes back to replay the transaction again.\nMove it at the end of the abort phase after nft_gc_seq_end() is called." } ], "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 through the nfnetlink/nf_tables netlink socket interface (`NFNL_SUBSYS_NFTABLES` batch processing), which requires a local process on the system. No remote packet path reaches the abort/GC transaction code.\nAC:L - The attacker controls both sides of the race: they choose when to force the `NFNL_ABORT_AUTOLOAD` path (by referencing an unloaded expression module), can queue many `request_module()` requests to stretch the mutex-released window to milliseconds of usermode-helper execution, and schedule the async GC worker precisely via attacker-settable `NFTA_SET_GC_INTERVAL` and element timeouts.\nPR:L - `nfnetlink_rcv()` checks `netlink_net_capable(skb, CAP_NET_ADMIN)`, evaluated against the network namespace's owning user namespace, so an entirely unprivileged user obtains it with `unshare -Urn` on default Ubuntu/Debian/Fedora/Arch/Android configurations. Only basic local user access is needed.\nUI:N - The attacker drives the entire sequence from its own process by submitting nftables batches and configuring set timeouts; no action by any other user or administrator is required.\nS:U - The corruption is confined to kernel heap memory and results in privilege escalation within the same host security authority, with no crossing of a VM, IOMMU, or hypervisor boundary.\nC:H - The GC worker reads and dereferences already-freed `nft_set_ext` elements (`nft_setelem_data_deactivate`, backend `remove`), and the double free of an attacker-size-controlled slab object allows reclaiming it with a readable structure to disclose arbitrary kernel memory.\nI:H - The double free plus UAF write into the rhashtable/rbtree/pipapo backend gives a general slab-corruption primitive on attacker-sized allocations — the same class of nftables element double-free that has yielded reliable arbitrary-write root escalation (CVE-2024-1086, CVE-2023-32233).\nA:H - Even unweaponized, the use-after-free and double free trigger slab/list corruption, `BUG_ON`, and kernel panic, and the attacker can repeat the trigger at will to reliably crash the machine." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "net/netfilter/nf_tables_api.c" ], "versions": [ { "version": "4b6346dc1edfb9839d6edee7360ed31a22fa6c95", "lessThan": "61ac7284346c32f9a8c8ceac56102f7914060428", "status": "affected", "versionType": "git" }, { "version": "23292bdfda5f04e704a843b8f97b0eb95ace1ca6", "lessThan": "2cee2ff7f8cce12a63a0a23ffe27f08d99541494", "status": "affected", "versionType": "git" }, { "version": "b44a459c6561595ed7c3679599c5279204132b33", "lessThan": "eb769ff4e281f751adcaf4f4445cbf30817be139", "status": "affected", "versionType": "git" }, { "version": "5d319f7a81431c6bb32eb4dc7d7975f99e2c8c66", "lessThan": "8d3a58af50e46167b6f1db47adadad03c0045dae", "status": "affected", "versionType": "git" }, { "version": "720344340fb9be2765bbaab7b292ece0a4570eae", "lessThan": "8038ee3c3e5b59bcd78467686db5270c68544e30", "status": "affected", "versionType": "git" }, { "version": "720344340fb9be2765bbaab7b292ece0a4570eae", "lessThan": "a34ba4bdeec0c3b629160497594908dc820110f1", "status": "affected", "versionType": "git" }, { "version": "720344340fb9be2765bbaab7b292ece0a4570eae", "lessThan": "0d459e2ffb541841714839e8228b845458ed3b27", "status": "affected", "versionType": "git" }, { "version": "f85ca36090cbb252bcbc95fc74c2853fc792694f", "status": "affected", "versionType": "git" }, { "version": "e07e68823116563bdbc49cef185cda6f463bc534", "status": "affected", "versionType": "git" }, { "version": "5.4.262", "lessThan": "5.4.274", "status": "affected", "versionType": "semver" }, { "version": "5.10.198", "lessThan": "5.10.215", "status": "affected", "versionType": "semver" }, { "version": "5.15.134", "lessThan": "5.15.155", "status": "affected", "versionType": "semver" }, { "version": "6.1.56", "lessThan": "6.1.86", "status": "affected", "versionType": "semver" }, { "version": "4.19.316", "lessThan": "4.20", "status": "affected", "versionType": "semver" }, { "version": "6.4.13", "lessThan": "6.5", "status": "affected", "versionType": "semver" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "net/netfilter/nf_tables_api.c" ], "versions": [ { "version": "6.5", "status": "affected" }, { "version": "0", "lessThan": "6.5", "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": "5.15.155", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.86", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.26", "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" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.4.262", "versionEndExcluding": "5.4.274" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10.198", "versionEndExcluding": "5.10.215" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15.134", "versionEndExcluding": "5.15.155" 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