{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-64414", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-07-19T15:36:31.786Z", "datePublished": "2026-07-25T08:50:54.495Z", "dateUpdated": "2026-07-25T08:50:54.495Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-07-25T08:50:54.495Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: handle unreadable frags\n\nsashiko reports:\n When an skb with unreadable fragments (such as from devmem TCP, where\n skb_frags_readable(skb) returns false) is processed by the u32 module,\n skb_copy_bits() will safely return a negative error code [..]\n\nxt_u32: bail out with hotdrop in this case.\ngather_frags: return -1, just as if we had no fragment header.\nnfnetlink_queue: restrict to the linear part.\nnfnetlink_log: restrict to the linear part.\n\nv2:\n - skb_zerocopy helpers don't copy readable flag, i.e. nfnetlink_queue\n is broken too\n xt_u32 shouldn't return true if hotdrop was set."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/ipv6/netfilter/nf_conntrack_reasm.c", "net/netfilter/nfnetlink_log.c", "net/netfilter/nfnetlink_queue.c", "net/netfilter/xt_u32.c"], "versions": [{"version": "65249feb6b3df9e17bab5911ee56fa7b0971e231", "lessThan": "3b13e7635795394705920cca1e1db7e4ca2e334b", "status": "affected", "versionType": "git"}, {"version": "65249feb6b3df9e17bab5911ee56fa7b0971e231", "lessThan": "fc5bfe63bacf8a3ae307b62b34206406ca733354", "status": "affected", "versionType": "git"}, {"version": "65249feb6b3df9e17bab5911ee56fa7b0971e231", "lessThan": "57056be3ec12e7d9ecd20a60d4060f510e4f284c", "status": "affected", "versionType": "git"}, {"version": "65249feb6b3df9e17bab5911ee56fa7b0971e231", "lessThan": "da5b58478a9c1b85608c9e40a3b8432d071b409e", "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/ipv6/netfilter/nf_conntrack_reasm.c", "net/netfilter/nfnetlink_log.c", "net/netfilter/nfnetlink_queue.c", "net/netfilter/xt_u32.c"], "versions": [{"version": "6.12", "status": "affected"}, {"version": "0", "lessThan": "6.12", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.96", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.39", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.4", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2-rc3", "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": "6.12", "versionEndExcluding": "6.12.96"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.12", "versionEndExcluding": "6.18.39"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.12", "versionEndExcluding": "7.1.4"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.12", "versionEndExcluding": "7.2-rc3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/3b13e7635795394705920cca1e1db7e4ca2e334b"}, {"url": "https://git.kernel.org/stable/c/fc5bfe63bacf8a3ae307b62b34206406ca733354"}, {"url": "https://git.kernel.org/stable/c/57056be3ec12e7d9ecd20a60d4060f510e4f284c"}, {"url": "https://git.kernel.org/stable/c/da5b58478a9c1b85608c9e40a3b8432d071b409e"}], "title": "netfilter: handle unreadable frags", "x_generator": {"engine": "bippy-1.2.0"}}}}

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