268 lines
13 KiB
JSON
268 lines
13 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-2026-64000",
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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": "2026-07-19T07:54:57.026Z",
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"datePublished": "2026-07-19T14:56:18.116Z",
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"dateUpdated": "2026-10-19T20:18:02.077Z"
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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": "2026-08-05T12:38:01.596Z"
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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: hsr: fix potential OOB access in supervision frame handling\n\nEnsure the entire TLV header is linearized before access by adding\nsizeof(struct hsr_sup_tlv) to the pskb_may_pull() calls. Without this,\na truncated frame could cause an out-of-bounds access."
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}
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],
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"metrics": [
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{
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"cvssV3_1": {
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"version": "3.1",
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
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"baseScore": 9.8,
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"baseSeverity": "CRITICAL"
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},
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"scenarios": [
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{
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"lang": "en",
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"value": "AV:N - The vulnerable code is reached when the kernel processes received Ethernet frames via the netdev RX handler in net/hsr, and a remote attacker on the HSR/PRP ring can deliver a crafted supervision frame without any local access to the victim host.\nAC:L - The attacker fully controls the malformed frame content and length; a precisely truncated supervision frame reliably passes existing TLV validation and triggers the out-of-bounds read with no races or attacker-uncontrollable conditions.\nPR:N - Exploitation requires only the ability to inject L2 HSR/PRP supervision frames onto the ring segment; no local account, capabilities, or authentication on the target kernel is needed.\nUI:N - No victim user action is required beyond normal operation of an HSR/PRP-configured node; the attacker triggers the bug solely by sending a malicious frame.\nS:U - Impact is confined to kernel memory safety within the same security authority; there is no VM escape, IOMMU bypass, or cross-security-boundary scope change.\nC:H - The bug is an out-of-bounds read of supervision TLV header fields past the skb tail, which can disclose adjacent kernel heap/skb memory and is not strictly bounded to a few attacker-uncontrolled bytes.\nI:H - Out-of-bounds access in kernel packet parsing can supply attacker-influenced TLV type/length values that drive further skb_pull arithmetic and extended parsing, creating a plausible path to memory corruption and control-flow hijacking.\nA:H - Reading beyond the skb buffer boundary during softirq packet processing can cause a kernel oops/panic, and the attacker can repeatedly trigger the condition with crafted frames."
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}
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]
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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/hsr/hsr_forward.c"
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],
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"versions": [
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{
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"version": "eafaa88b3eb7f28aecb222281655473431d3ef2e",
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"lessThan": "09a37dca090c55ffb1a33f52d8667f1c2367ef48",
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"status": "affected",
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"versionType": "git"
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},
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{
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"lessThan": "a4b64f3e9c7b8259f7dd251a0313420ba7c01852",
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"status": "affected",
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},
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"status": "affected",
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"status": "affected",
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"versionType": "git"
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{
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"version": "eafaa88b3eb7f28aecb222281655473431d3ef2e",
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"lessThan": "78607a6854a22a2502f68092202e75a39af4865d",
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"status": "affected",
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"lessThan": "f229426072fc865654a60978bb7fda790a051ff3",
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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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"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/hsr/hsr_forward.c"
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],
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"versions": [
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{
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"version": "5.16",
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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": "5.16",
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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": "6.1.176",
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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": "6.6.143",
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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": "6.12.93",
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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": "6.18.35",
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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": "7.0.12",
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"lessThanOrEqual": "7.0.*",
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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": "7.1",
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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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"references": [
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{
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"url": "https://git.kernel.org/stable/c/09a37dca090c55ffb1a33f52d8667f1c2367ef48"
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},
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{
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"url": "https://git.kernel.org/stable/c/a4b64f3e9c7b8259f7dd251a0313420ba7c01852"
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"url": "https://git.kernel.org/stable/c/71c986c0ba45b7dc574fae27c83e7b6671556f37"
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"url": "https://git.kernel.org/stable/c/fbd0662f9c9a66e8cc3df3099cca8ed6d3837cc7"
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"url": "https://git.kernel.org/stable/c/78607a6854a22a2502f68092202e75a39af4865d"
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{
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"url": "https://git.kernel.org/stable/c/f229426072fc865654a60978bb7fda790a051ff3"
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}
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],
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"title": "net: hsr: fix potential OOB access in supervision frame handling",
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"type": "ssvc",
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"content": {
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"id": "CVE-2026-64000",
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"role": "CISA Coordinator",
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"options": [
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{
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"Exploitation": "none"
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{
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"Technical Impact": "total"
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"version": "2.0.3",
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"timestamp": "2026-10-16T15:34:58.390511Z"
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"problemTypes": [
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"lang": "en",
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"type": "CWE",
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"cweId": "CWE-125",
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"description": "CWE-125 Out-of-bounds Read"
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}
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]
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"shortName": "CISA-ADP",
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"dateUpdated": "2026-10-19T20:18:02.077Z"
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