248 lines
12 KiB
JSON
248 lines
12 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-98950",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2026-09-25T10:25:14.382Z",
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"datePublished": "2026-10-23T12:19:09.890Z",
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"dateUpdated": "2026-10-30T12:40:29.247Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-10-30T12:40:29.247Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nflow_dissector: avoid u16 truncation of hlen in bpf_flow_dissect()\n\nbpf_flow_dissect() sanitizes the offsets returned by the BPF program\nwith clamp_t(u16, ..., hlen).\n\nIf hlen is bigger than 65535, the upper bound is truncated before\nthe comparison. For instance, with hlen == 65536, both nhoff and\nthoff are forced to zero, even if the program returned sane values.\n\nThis is the same class of bug as the one fixed in commit 99bda1ecbd56\n(\"flow_dissector: avoid u16 truncation of skb->len when computing\nthoff\"). That fix does not cover the BPF path, because\n__skb_flow_dissect() returns early when a BPF flow dissector\nhandles the packet.\n\nstruct bpf_flow_keys stores nhoff and thoff as u16, so cap hlen\nto U16_MAX before clamping.\n\nFound by sashiko while reviewing the commit above."
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"net/core/flow_dissector.c"
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],
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"versions": [
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{
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"version": "d58e468b1112dcd1d5193c0a89ff9f98b5a3e8b9",
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"lessThan": "46d21495f633e38d40857401504ee51c56ffed2a",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "d58e468b1112dcd1d5193c0a89ff9f98b5a3e8b9",
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"lessThan": "6267f8304cbd9ec9f3f53bd227a733e07131492e",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "d58e468b1112dcd1d5193c0a89ff9f98b5a3e8b9",
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"lessThan": "99c59062172620a0bac4ae8cf37c83bb78772cdd",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "d58e468b1112dcd1d5193c0a89ff9f98b5a3e8b9",
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"lessThan": "c44c02c930c6583b235a1937c69ff716c4bb4514",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "d58e468b1112dcd1d5193c0a89ff9f98b5a3e8b9",
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"lessThan": "3fb5ad2951a6df92c98f4f06cd70f20c50a2eb2a",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "d58e468b1112dcd1d5193c0a89ff9f98b5a3e8b9",
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"lessThan": "cc18eb0e9941162c03f03f411ed7f6c339d91fa0",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "d58e468b1112dcd1d5193c0a89ff9f98b5a3e8b9",
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"lessThan": "61b43a51a55929ec040bee3ea51af2121b956d05",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "d58e468b1112dcd1d5193c0a89ff9f98b5a3e8b9",
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"lessThan": "f202578efc738b883cfa04889eb97328914265a7",
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"status": "affected",
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"versionType": "git"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"net/core/flow_dissector.c"
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],
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"versions": [
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{
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"version": "4.20",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "4.20",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.10.273",
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"lessThanOrEqual": "5.10.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.15.224",
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"lessThanOrEqual": "5.15.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.1.191",
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"lessThanOrEqual": "6.1.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.6.160",
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"lessThanOrEqual": "6.6.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.12.113",
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"lessThanOrEqual": "6.12.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.18.57",
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"lessThanOrEqual": "6.18.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.2.11",
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"lessThanOrEqual": "7.2.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.3",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "4.20",
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"versionEndExcluding": "5.10.273"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "4.20",
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"versionEndExcluding": "5.15.224"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "4.20",
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"versionEndExcluding": "6.1.191"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "4.20",
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"versionEndExcluding": "6.6.160"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "4.20",
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"versionEndExcluding": "6.12.113"
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},
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{
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "4.20",
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"versionEndExcluding": "6.18.57"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "4.20",
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"versionEndExcluding": "7.2.11"
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},
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{
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "4.20",
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}
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]
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}
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]
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}
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/46d21495f633e38d40857401504ee51c56ffed2a"
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},
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{
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"url": "https://git.kernel.org/stable/c/6267f8304cbd9ec9f3f53bd227a733e07131492e"
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},
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{
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"url": "https://git.kernel.org/stable/c/99c59062172620a0bac4ae8cf37c83bb78772cdd"
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},
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{
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"url": "https://git.kernel.org/stable/c/c44c02c930c6583b235a1937c69ff716c4bb4514"
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},
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{
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"url": "https://git.kernel.org/stable/c/3fb5ad2951a6df92c98f4f06cd70f20c50a2eb2a"
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},
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{
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"url": "https://git.kernel.org/stable/c/cc18eb0e9941162c03f03f411ed7f6c339d91fa0"
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},
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{
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"url": "https://git.kernel.org/stable/c/61b43a51a55929ec040bee3ea51af2121b956d05"
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},
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{
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"url": "https://git.kernel.org/stable/c/f202578efc738b883cfa04889eb97328914265a7"
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}
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],
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"title": "flow_dissector: avoid u16 truncation of hlen in bpf_flow_dissect()",
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"x_generator": {
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"engine": "bippy-1.2.0"
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} |