{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-53134", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-06-09T07:44:35.386Z", "datePublished": "2026-06-25T08:38:23.348Z", "dateUpdated": "2026-06-25T08:38:23.348Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-06-25T08:38:23.348Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nft_fib: fix stale stack leak via the OIFNAME register\n\nFor NFT_FIB_RESULT_OIFNAME the destination register is declared with\nlen = IFNAMSIZ (four 32-bit registers), but on the lookup-fail,\nRTN_LOCAL and oif-mismatch paths nft_fib{4,6}_eval() only writes one\nregister via \"*dest = 0\". The remaining three registers are left as\nwhatever was on the stack in nft_do_chain()'s struct nft_regs, and a\ndownstream expression that loads the register span can leak that\nuninitialised kernel stack to userspace.\n\nThe NFTA_FIB_F_PRESENT existence check has the same shape: it is only\nmeaningful for NFT_FIB_RESULT_OIF, yet it was accepted for any result type\nwhile the eval stores a single byte via nft_reg_store8(), leaving the rest\nof the declared span stale.\n\nFix both:\n\n - replace the bare \"*dest = 0\" in the eval with nft_fib_store_result(),\n which strscpy_pad()s the whole IFNAMSIZ for OIFNAME (and is already\n used on the other early-return path), and\n\n - restrict NFTA_FIB_F_PRESENT to NFT_FIB_RESULT_OIF and declare its\n destination as a single u8, so the marked span matches the one byte\n the eval writes." } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "net/ipv4/netfilter/nft_fib_ipv4.c", "net/ipv6/netfilter/nft_fib_ipv6.c", "net/netfilter/nft_fib.c" ], "versions": [ { "version": "f6d0cbcf09c506b9b022df8f9d7693a7cec3c732", "lessThan": "6744e49fe51bfba26522acc2d0e9703cb41d8e50", "status": "affected", "versionType": "git" }, { "version": "f6d0cbcf09c506b9b022df8f9d7693a7cec3c732", "lessThan": "eca18feed38b3377a2ec5d1f22af1170c55d0171", "status": "affected", "versionType": "git" }, { "version": "f6d0cbcf09c506b9b022df8f9d7693a7cec3c732", "lessThan": "d19ddef8c327a4773ff81f8e51027d1e0b4cf069", "status": "affected", "versionType": "git" }, { "version": "f6d0cbcf09c506b9b022df8f9d7693a7cec3c732", "lessThan": "eb8a8124484dbc3c2b543e207da39bbccb703d31", "status": "affected", "versionType": "git" }, { "version": "f6d0cbcf09c506b9b022df8f9d7693a7cec3c732", "lessThan": "8c84885e9790823828bb8084736ea15769b1ac16", "status": "affected", "versionType": "git" }, { "version": "f6d0cbcf09c506b9b022df8f9d7693a7cec3c732", "lessThan": "84d8f58cf28a0415413f43ba7148f7bacd4c1b6e", "status": "affected", "versionType": "git" }, { "version": "f6d0cbcf09c506b9b022df8f9d7693a7cec3c732", "lessThan": "3544210609f6d1db282bbdeca639104ef624c393", "status": "affected", "versionType": "git" }, { "version": "f6d0cbcf09c506b9b022df8f9d7693a7cec3c732", "lessThan": "ab185e0c4fb82dfba6fb86f8271e06f931d9c64c", "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/ipv4/netfilter/nft_fib_ipv4.c", "net/ipv6/netfilter/nft_fib_ipv6.c", "net/netfilter/nft_fib.c" ], "versions": [ { "version": "4.10", "status": "affected" }, { "version": "0", "lessThan": "4.10", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.259", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.210", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.176", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.143", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.94", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.18.36", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.0.13", "lessThanOrEqual": "7.0.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.1", "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": "4.10", "versionEndExcluding": "5.10.259" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.10", "versionEndExcluding": "5.15.210" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.10", "versionEndExcluding": "6.1.176" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.10", "versionEndExcluding": "6.6.143" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.10", "versionEndExcluding": "6.12.94" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.10", "versionEndExcluding": "6.18.36" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.10", "versionEndExcluding": "7.0.13" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.10", "versionEndExcluding": "7.1" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/6744e49fe51bfba26522acc2d0e9703cb41d8e50" }, { "url": "https://git.kernel.org/stable/c/eca18feed38b3377a2ec5d1f22af1170c55d0171" }, { "url": "https://git.kernel.org/stable/c/d19ddef8c327a4773ff81f8e51027d1e0b4cf069" }, { "url": "https://git.kernel.org/stable/c/eb8a8124484dbc3c2b543e207da39bbccb703d31" }, { "url": "https://git.kernel.org/stable/c/8c84885e9790823828bb8084736ea15769b1ac16" }, { "url": "https://git.kernel.org/stable/c/84d8f58cf28a0415413f43ba7148f7bacd4c1b6e" }, { "url": "https://git.kernel.org/stable/c/3544210609f6d1db282bbdeca639104ef624c393" }, { "url": "https://git.kernel.org/stable/c/ab185e0c4fb82dfba6fb86f8271e06f931d9c64c" } ], "title": "netfilter: nft_fib: fix stale stack leak via the OIFNAME register", "x_generator": { "engine": "bippy-1.2.0" } } } }