294 lines
14 KiB
JSON
294 lines
14 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-2026-98012",
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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": "2026-09-25T10:19:56.069Z",
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"datePublished": "2026-09-25T10:23:35.934Z",
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"dateUpdated": "2026-10-19T09:12:17.681Z"
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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": "2026-10-19T09:12:17.681Z"
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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: sfq: clamp quantum in change path\n\nsfq_change() accepts any non-negative quantum (only rejects\n(int)ctl->quantum < 0). With a crafted size table qdisc_pkt_len reaches\n~2 GiB, so quantum=1 makes the deficit-refill loop spin ~2^31 times\nunder the qdisc lock (a soft lockup / denial of service).\n\nAdd max(256U, ...) matching fq_codel_change(). Reject quantum > 1<<20\nwith -EINVAL, matching fq_codel_change() and the init clamp.\n\nConditions to recreate the bug:\n CONFIG_NET_SCH_SFQ=y. Requires CAP_NET_ADMIN (namespace-local via\n unshare -Urn suffices).\n\n tc qdisc add dev dummy0 root sfq\n tc qdisc change dev dummy0 root sfq quantum 1 stab data 32768 size_log 15 cell_log 0"
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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_sfq.c"
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],
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"versions": [
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{
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"version": "4919649699c5f4dbae08b8e2ed536fc9d6c3c2aa",
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"lessThan": "4117c528b2de5fdc3e4a7e3626815b616a635cdc",
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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": "548cf048b426729a7a1fa6acd1271c010c9a7380",
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"lessThan": "f82fa6f10d4a69322cad0f7a4aa523ce6292a5a0",
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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": "c49ac48fac51a6a54efd5963954d02bacf075085",
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"lessThan": "0692ce5a528df450d64e9f819054177e9d91076f",
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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": "58ae7465f0e7113d45aa88a66bf2d203c71c195e",
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"lessThan": "e4192bcf83aaab02129644ddf4656fd86e93751f",
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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": "82bd38bd5467ece1ee274b493f51326cf5220a5a",
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"lessThan": "f3820dce042a673fcb28cc31c87ee14257e21a17",
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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": "e4650d7ae4252f67e997a632adfae0dd74d3a99a",
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"lessThan": "534cd7ecbbc6e8a974f4003a5c1557439c6e0a72",
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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": "e4650d7ae4252f67e997a632adfae0dd74d3a99a",
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"lessThan": "e6c1cb728e389354203a72bc77464c222a247aeb",
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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": "e4650d7ae4252f67e997a632adfae0dd74d3a99a",
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"lessThan": "fb9f88a33c516ea5c0bcd9a22ca288b246b34567",
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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": "843cacb88f42f426973f1ed11c6fb562558efb27",
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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": "5.10.239",
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"lessThan": "5.10.271",
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"status": "affected",
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"versionType": "semver"
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},
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{
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"version": "5.15.186",
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"lessThan": "5.15.222",
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"status": "affected",
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"versionType": "semver"
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},
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{
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"version": "6.1.129",
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"lessThan": "6.1.189",
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"status": "affected",
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"versionType": "semver"
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},
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{
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"version": "6.6.76",
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"lessThan": "6.6.158",
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"status": "affected",
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"versionType": "semver"
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},
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{
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"version": "6.12.13",
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"lessThan": "6.12.111",
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"status": "affected",
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"versionType": "semver"
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},
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{
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"version": "5.4.297",
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"lessThan": "5.5",
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"status": "affected",
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"versionType": "semver"
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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_sfq.c"
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],
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"versions": [
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{
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"version": "6.13",
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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": "6.13",
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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": "6.12.111",
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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": "6.18.53",
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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": "7.2.7",
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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": "5.10.239",
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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": "5.15.186",
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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": "6.1.129",
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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": "6.6.76",
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{
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.12.13",
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{
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"versionStartIncluding": "6.13",
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"versionStartIncluding": "6.13",
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"versionEndExcluding": "7.3"
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{
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"vulnerable": true,
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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/4117c528b2de5fdc3e4a7e3626815b616a635cdc"
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},
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{
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"url": "https://git.kernel.org/stable/c/f82fa6f10d4a69322cad0f7a4aa523ce6292a5a0"
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},
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{
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"url": "https://git.kernel.org/stable/c/0692ce5a528df450d64e9f819054177e9d91076f"
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},
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{
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"url": "https://git.kernel.org/stable/c/e4192bcf83aaab02129644ddf4656fd86e93751f"
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},
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{
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"url": "https://git.kernel.org/stable/c/f3820dce042a673fcb28cc31c87ee14257e21a17"
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},
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{
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"url": "https://git.kernel.org/stable/c/534cd7ecbbc6e8a974f4003a5c1557439c6e0a72"
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},
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{
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"url": "https://git.kernel.org/stable/c/e6c1cb728e389354203a72bc77464c222a247aeb"
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},
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{
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"url": "https://git.kernel.org/stable/c/fb9f88a33c516ea5c0bcd9a22ca288b246b34567"
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}
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],
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"title": "net/sched: sfq: clamp quantum in change path",
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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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} |