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-2026-98622",
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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": "2026-09-25T10:25:14.360Z",
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"datePublished": "2026-10-18T15:19:42.514Z",
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"dateUpdated": "2026-10-19T09:22:50.359Z"
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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": "2026-10-19T09:22:50.359Z"
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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\nnet/sched: act_ct: don't WARN on benign flow_offload_alloc() failure\n\nflow_offload_alloc() returns NULL when the conntrack entry is dying\n(e.g. raced with a conntrack flush) or when the GFP_ATOMIC allocation\nfails; both are expected under load and neither is a kernel bug. This\npath runs from softirq on every committed packet, so with\npanic_on_warn=1 an unprivileged user can panic the box just by racing\na conntrack flush against a `tc ... action ct commit` classifier.\n\nReproduced with a custom repro under QEMU: a small, fixed set of UDP\nflows through `tc filter ... action ct commit` on lo, raced against\nthreads flooding bare ctnetlink CT_DELETE (flush) requests. Hits\nWARNING: net/sched/act_ct.c:437 (tcf_ct_flow_table_add(), inlined\ninto tcf_ct_act() in this build) within ~15s on the unpatched kernel;\nsame setup is clean on the patched kernel. The fix itself is\nbehavior-preserving: both branches already did `goto err_alloc`\nbefore and after, only the WARN is removed."
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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/sched/act_ct.c"
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],
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"versions": [
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{
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"version": "64ff70b80fd403110b67dd9f7184a604fdb0da43",
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"lessThan": "e8fcf3f08834e939b797311742ee72b1e2a08096",
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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": "64ff70b80fd403110b67dd9f7184a604fdb0da43",
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"lessThan": "af475f599270e59313552e6c6f3af8507da672b8",
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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": "64ff70b80fd403110b67dd9f7184a604fdb0da43",
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"lessThan": "424ba52c0058deeb940d02cba52eb0aeb288db33",
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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": "64ff70b80fd403110b67dd9f7184a604fdb0da43",
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"lessThan": "d512c484bd93a5f2794aa03c9faeb7bcb82dbd4a",
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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": "64ff70b80fd403110b67dd9f7184a604fdb0da43",
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"lessThan": "d805560ad69cb266d669341ca01e26bffb0d2c67",
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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": "64ff70b80fd403110b67dd9f7184a604fdb0da43",
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"lessThan": "00734f3684fcec42c319bedfe68a5d357c720b53",
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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": "64ff70b80fd403110b67dd9f7184a604fdb0da43",
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"lessThan": "650787233c2fd6e515a7c5f371019a9fa080ccd2",
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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": "64ff70b80fd403110b67dd9f7184a604fdb0da43",
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"lessThan": "47abe7a5c4eb53269aca3506446f851572a059a3",
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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/sched/act_ct.c"
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],
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"versions": [
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{
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"version": "5.7",
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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": "5.7",
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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": "5.10.271",
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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": "5.15.222",
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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": "6.1.189",
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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": "6.6.158",
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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": "6.12.112",
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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": "6.18.55",
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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": "7.2.9",
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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": "5.7",
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"versionEndExcluding": "5.10.271"
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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": "5.7",
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"versionEndExcluding": "5.15.222"
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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": "5.7",
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"versionEndExcluding": "6.1.189"
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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": "5.7",
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"versionEndExcluding": "6.6.158"
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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": "5.7",
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"versionEndExcluding": "6.12.112"
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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": "5.7",
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"versionEndExcluding": "6.18.55"
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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": "5.7",
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"versionEndExcluding": "7.2.9"
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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": "5.7",
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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/e8fcf3f08834e939b797311742ee72b1e2a08096"
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},
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{
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"url": "https://git.kernel.org/stable/c/af475f599270e59313552e6c6f3af8507da672b8"
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},
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{
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"url": "https://git.kernel.org/stable/c/424ba52c0058deeb940d02cba52eb0aeb288db33"
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},
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{
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"url": "https://git.kernel.org/stable/c/d512c484bd93a5f2794aa03c9faeb7bcb82dbd4a"
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},
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{
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"url": "https://git.kernel.org/stable/c/d805560ad69cb266d669341ca01e26bffb0d2c67"
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},
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{
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"url": "https://git.kernel.org/stable/c/00734f3684fcec42c319bedfe68a5d357c720b53"
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},
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{
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"url": "https://git.kernel.org/stable/c/650787233c2fd6e515a7c5f371019a9fa080ccd2"
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},
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{
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"url": "https://git.kernel.org/stable/c/47abe7a5c4eb53269aca3506446f851572a059a3"
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}
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],
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"title": "net/sched: act_ct: don't WARN on benign flow_offload_alloc() failure",
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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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} |