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-2026-90074",
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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": "2026-09-11T19:38:34.785Z",
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"datePublished": "2026-09-17T16:05:54.214Z",
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"dateUpdated": "2026-10-19T08:57:31.165Z"
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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": "2026-10-19T08:57:31.165Z"
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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: fq_pie: clamp default quantum to avoid signed overflow\n\nfq_pie_init() sets q->quantum = psched_mtu(qdisc_dev(sch)) without\nclamping. A device with a huge MTU (e.g. dummy with max_mtu == 0\naccepting MTU 2147483634) makes psched_mtu() return 0x80000000, which\noverflows the signed flow->deficit to INT_MIN in fq_pie_qdisc_dequeue(),\ncausing an infinite loop and soft lockup. Emulate fq_pie_policy which\nis already bounded to [1, 1 << 20]; clamp the default to [256, 1 << 20].\n256 matches fq_codel's floor and is a sane minimum for a DRR quantum.\n\nConditions to recreate the bug: a device whose MTU (plus\nhard_header_len) wraps psched_mtu() into the sign bit (e.g. a dummy\ndevice with max_mtu == 0 accepting MTU 2147483634). Requires\nCAP_NET_ADMIN in a user namespace."
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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/sch_fq_pie.c"
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],
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"versions": [
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{
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"version": "ec97ecf1ebe485a17cd8395a5f35e6b80b57665a",
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"lessThan": "1f43e4dbc93b7d02761a024d5f895df823c07b72",
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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": "ec97ecf1ebe485a17cd8395a5f35e6b80b57665a",
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"lessThan": "f7942b2693bc24c7d609a03d06f97bee3b0bd96a",
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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": "ec97ecf1ebe485a17cd8395a5f35e6b80b57665a",
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"lessThan": "6f1be05faecef4c0f9a008200209f66ef2e133f7",
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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": "ec97ecf1ebe485a17cd8395a5f35e6b80b57665a",
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"lessThan": "435da3734a8e63d3067016accc977ed1d10aaaa0",
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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": "ec97ecf1ebe485a17cd8395a5f35e6b80b57665a",
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"lessThan": "44dad8fe99b58a7fe2961e9eec6a5f07ace5b51f",
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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": "ec97ecf1ebe485a17cd8395a5f35e6b80b57665a",
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"lessThan": "044fa2498bbc2900f0c48a6ef2fdd5b2bdfc3795",
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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": "ec97ecf1ebe485a17cd8395a5f35e6b80b57665a",
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"lessThan": "bf97fd2163ad1191ef8daa3d4df8372aee19e396",
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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": "ec97ecf1ebe485a17cd8395a5f35e6b80b57665a",
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"lessThan": "c86cd7ed0b0e44779a3d1683f03e4353baf4bdc9",
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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/sch_fq_pie.c"
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],
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"versions": [
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{
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"version": "5.6",
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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": "5.6",
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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": "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": "5.6",
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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": "5.6",
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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": "5.6",
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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": "5.6",
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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": "5.6",
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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": "5.6",
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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": "5.6",
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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": "5.6",
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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/1f43e4dbc93b7d02761a024d5f895df823c07b72"
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},
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{
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"url": "https://git.kernel.org/stable/c/f7942b2693bc24c7d609a03d06f97bee3b0bd96a"
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},
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{
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"url": "https://git.kernel.org/stable/c/6f1be05faecef4c0f9a008200209f66ef2e133f7"
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},
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{
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"url": "https://git.kernel.org/stable/c/435da3734a8e63d3067016accc977ed1d10aaaa0"
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},
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{
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"url": "https://git.kernel.org/stable/c/44dad8fe99b58a7fe2961e9eec6a5f07ace5b51f"
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},
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{
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"url": "https://git.kernel.org/stable/c/044fa2498bbc2900f0c48a6ef2fdd5b2bdfc3795"
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},
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{
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"url": "https://git.kernel.org/stable/c/bf97fd2163ad1191ef8daa3d4df8372aee19e396"
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},
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{
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"url": "https://git.kernel.org/stable/c/c86cd7ed0b0e44779a3d1683f03e4353baf4bdc9"
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}
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],
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"title": "net/sched: fq_pie: clamp default quantum to avoid signed overflow",
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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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} |