{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2024-36978", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-05-30T15:25:07.082Z", "datePublished": "2024-06-19T06:20:23.103Z", "dateUpdated": "2026-08-05T11:32:27.525Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:32:27.525Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: sched: sch_multiq: fix possible OOB write in multiq_tune()\n\nq->bands will be assigned to qopt->bands to execute subsequent code logic\nafter kmalloc. So the old q->bands should not be used in kmalloc.\nOtherwise, an out-of-bounds write will occur." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:L - The vulnerable path is reached through the tc/qdisc RTNETLINK interface plus ethtool channel configuration, both local syscall/netlink operations rather than remote network input.\nAC:L - The attacker fully controls every condition (device tx-queue counts, band configuration, tune ordering) under rtnl_lock with no race, making the overflow reliably triggerable.\nPR:L - The path requires CAP_NET_ADMIN, but this is obtainable by an unprivileged user via user+network namespaces (unshare -Urn), where a multiqueue veth can be created and reconfigured, so only low privileges are truly needed.\nUI:N - The entire sequence is performed by the attacker alone; no victim action is required.\nS:U - The corruption stays within the kernel's own security authority; there is no VM, IOMMU, or sandbox boundary crossed.\nC:H - The heap out-of-bounds write corrupts adjacent kernel objects and can be leveraged to build read primitives and disclose kernel memory, per the memory-corruption guidance.\nI:H - The bug is a controlled out-of-bounds heap write of pointer-sized values, a classic primitive for arbitrary write and control-flow hijacking.\nA:H - The OOB write corrupts the kernel heap and reliably causes oops/panic, giving high availability impact." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "net/sched/sch_multiq.c" ], "versions": [ { "version": "c2999f7fb05b87da4060e38150c70fa46794d82b", "lessThan": "d5d9d241786f49ae7cbc08e7fc95a115e9d80f3d", "status": "affected", "versionType": "git" }, { "version": "c2999f7fb05b87da4060e38150c70fa46794d82b", "lessThan": "52b1aa07cda6a199cd6754d3798c7759023bc70f", "status": "affected", "versionType": "git" }, { "version": "c2999f7fb05b87da4060e38150c70fa46794d82b", "lessThan": "598572c64287aee0b75bbba4e2881496878860f3", "status": "affected", "versionType": "git" }, { "version": "c2999f7fb05b87da4060e38150c70fa46794d82b", "lessThan": "0f208fad86631e005754606c3ec80c0d44a11882", "status": "affected", "versionType": "git" }, { "version": "c2999f7fb05b87da4060e38150c70fa46794d82b", "lessThan": "54c2c171c11a798fe887b3ff72922aa9d1411c1e", "status": "affected", "versionType": "git" }, { "version": "c2999f7fb05b87da4060e38150c70fa46794d82b", "lessThan": "d6fb5110e8722bc00748f22caeb650fe4672f129", "status": "affected", "versionType": "git" }, { "version": "c2999f7fb05b87da4060e38150c70fa46794d82b", "lessThan": "affc18fdc694190ca7575b9a86632a73b9fe043d", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", 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