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-2026-90393",
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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": "2026-09-11T19:38:34.810Z",
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"datePublished": "2026-09-17T16:09:26.388Z",
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"dateUpdated": "2026-10-19T09:02:57.658Z"
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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": "2026-10-19T09:02:57.658Z"
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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\nbpf: Fix potential UAF in bpf_netns_link_update_prog\n\nIn bpf_netns_link_update_prog, the checks for old_prog and prog type\nare currently performed locklessly before acquiring netns_bpf_mutex.\nThis creates a race condition that can lead to a UAF issue.\n\nIf two threads concurrently execute BPF_LINK_UPDATE on the same netns\nlink, the following execution path can trigger a UAF:\n\nCPU0 CPU1\nbpf_netns_link_update_prog\n if (old_prog && old_prog != link->prog)\n return -EPERM;\n bpf_netns_link_update_prog\n if (old_prog && old_prog != link->prog)\n ...\n old_prog = xchg(&link->prog, new_prog);\n bpf_prog_put(old_prog);\n if (new_prog->type != link->prog->type) <-- trigger UAF\n\nFix this by moving the old_prog and prog->type checks inside the\nnetns_bpf_mutex critical section. Meanwhile, use guard() to simplify\nlock management and avoid all the goto jumping."
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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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"kernel/bpf/net_namespace.c"
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],
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"versions": [
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{
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"version": "7f045a49fee04b5662cbdeaf0838f9322ae8c63a",
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"lessThan": "d462b5481d77ce7df8a5ff89a699386f00c9214d",
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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": "7f045a49fee04b5662cbdeaf0838f9322ae8c63a",
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"lessThan": "bdddf3e1493ee973619c154a57071ce67f78598b",
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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": "7f045a49fee04b5662cbdeaf0838f9322ae8c63a",
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"lessThan": "79a66fd997d4eecf17302d613194879eb32e0986",
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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": "7f045a49fee04b5662cbdeaf0838f9322ae8c63a",
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"lessThan": "f4ce6803df4095777191d800bebc50219b615ca0",
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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": "7f045a49fee04b5662cbdeaf0838f9322ae8c63a",
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"lessThan": "277168cb9d153ce8e9c3f9275670e32ae61b41d6",
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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": "7f045a49fee04b5662cbdeaf0838f9322ae8c63a",
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"lessThan": "bda86e9f31b9a296b6e64a51c91dc776fc9f613e",
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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": "7f045a49fee04b5662cbdeaf0838f9322ae8c63a",
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"lessThan": "923f559e95b89b33c7e1793b3d8f7f4ec9b2e4b7",
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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": "7f045a49fee04b5662cbdeaf0838f9322ae8c63a",
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"lessThan": "5c5997836381010fc5907b36bc17d3b19407e933",
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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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"kernel/bpf/net_namespace.c"
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],
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"versions": [
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{
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"version": "5.8",
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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": "5.8",
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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": "5.10.270",
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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": "5.15.221",
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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": "6.1.188",
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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": "6.6.157",
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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": "6.12.110",
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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": "6.18.52",
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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": "7.2.6",
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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": "5.8",
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"versionEndExcluding": "5.10.270"
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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": "5.8",
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"versionEndExcluding": "5.15.221"
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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": "5.8",
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"versionEndExcluding": "6.1.188"
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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": "5.8",
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"versionEndExcluding": "6.6.157"
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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": "5.8",
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"versionEndExcluding": "6.12.110"
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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": "5.8",
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"versionEndExcluding": "6.18.52"
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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": "5.8",
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"versionEndExcluding": "7.2.6"
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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": "5.8",
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"versionEndExcluding": "7.3"
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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/d462b5481d77ce7df8a5ff89a699386f00c9214d"
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},
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{
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"url": "https://git.kernel.org/stable/c/bdddf3e1493ee973619c154a57071ce67f78598b"
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},
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{
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"url": "https://git.kernel.org/stable/c/79a66fd997d4eecf17302d613194879eb32e0986"
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},
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{
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"url": "https://git.kernel.org/stable/c/f4ce6803df4095777191d800bebc50219b615ca0"
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},
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{
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"url": "https://git.kernel.org/stable/c/277168cb9d153ce8e9c3f9275670e32ae61b41d6"
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},
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{
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"url": "https://git.kernel.org/stable/c/bda86e9f31b9a296b6e64a51c91dc776fc9f613e"
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},
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{
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"url": "https://git.kernel.org/stable/c/923f559e95b89b33c7e1793b3d8f7f4ec9b2e4b7"
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},
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{
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"url": "https://git.kernel.org/stable/c/5c5997836381010fc5907b36bc17d3b19407e933"
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}
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],
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"title": "bpf: Fix potential UAF in bpf_netns_link_update_prog",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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}
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}
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} |