314 lines
16 KiB
JSON
314 lines
16 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-2026-80646",
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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": "2026-08-26T14:34:25.779Z",
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"datePublished": "2026-08-28T06:48:56.277Z",
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"dateUpdated": "2026-10-16T19:26:31.747Z"
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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": "2026-08-29T06:21:41.550Z"
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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\nipv6: guard against possible NULL deref in __in6_dev_stats_get()\n\ndev_get_by_index_rcu() could return NULL if the original physical\ndevice is unregistered.\n\nFound by Sashiko."
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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:N/I:N/A:H",
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"baseScore": 7.5,
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"baseSeverity": "HIGH"
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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 - Remote attackers reach ipv6_frag_rcv() through the standard IPv6 receive and local-delivery path (ipv6_rcv to ip6_protocol_deliver_rcu) by sending fragmented IPv6 packets to an Internet-facing host running IPv6 reassembly on a VRF/L3-master ingress path.\nAC:L - An attacker can repeatedly deliver IPv6 fragments and time them against concurrent netdev unregister (link teardown, container veth removal, or ip link del with CAP_NET_ADMIN in a user namespace), controlling both sides of the race rather than depending on uncontrollable layout.\nPR:N - Sending unauthenticated IPv6 fragments requires no kernel credentials; VRF/L3-master configuration is a deployment condition on routers and cloud hosts, not a privilege the attacker must hold to deliver the triggering traffic.\nUI:N - Exploitation needs only network delivery of fragmented IPv6 packets during interface teardown; no victim action such as opening files, clicking links, or mounting filesystems is required.\nS:U - The NULL dereference crashes the kernel on the receiving host but does not cross a VM, container, or IOMMU security boundary; impact stays within the same kernel security authority.\nC:N - The failure is a NULL pointer read in __in6_dev_get(NULL) after dev_get_by_index_rcu() returns NULL; there is no use-after-free, out-of-bounds read, or other information-disclosure primitive.\nI:N - The bug dereferences a NULL net_device pointer for statistics lookup only; it provides no memory write, corruption, or control-flow hijack primitive beyond crashing the kernel.\nA:H - The NULL dereference during IPv6 fragment receive/reassembly processing in softirq context causes a kernel OOPS or panic, fully denying availability on the affected system until reboot."
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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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"include/net/addrconf.h"
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],
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"versions": [
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{
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"version": "e1ae5c2ea4783b1fd87be250f9fcc9d9e1a6ba3f",
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"lessThan": "a23f2c68c6635e41404f189f8f7ae910738cebdb",
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"status": "affected",
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},
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"version": "e1ae5c2ea4783b1fd87be250f9fcc9d9e1a6ba3f",
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"lessThan": "e14db43677946bf2095febd294bb3c13ab375ab7",
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"status": "affected",
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"status": "affected",
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"status": "affected",
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"lessThan": "fc920c0659cdea5afd8721c1155a51564859e075",
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"status": "affected",
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{
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"version": "e1ae5c2ea4783b1fd87be250f9fcc9d9e1a6ba3f",
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"lessThan": "507541c2a8eeb76c02bd2511958f73a8cfa3e1bc",
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"status": "affected",
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},
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{
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"version": "a24963500a4ec921ce9c2597e0a584e44513afae",
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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": "4.19.291",
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"lessThan": "4.20",
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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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"include/net/addrconf.h"
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],
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"versions": [
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{
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"version": "5.2",
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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": "5.2",
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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": "5.10.261",
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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": "5.15.212",
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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": "6.1.178",
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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": "6.6.145",
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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": "6.12.97",
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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": "6.18.40",
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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": "7.1.5",
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"lessThanOrEqual": "7.1.*",
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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": "7.2",
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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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"operator": "OR",
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/a23f2c68c6635e41404f189f8f7ae910738cebdb"
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},
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{
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"url": "https://git.kernel.org/stable/c/e14db43677946bf2095febd294bb3c13ab375ab7"
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"url": "https://git.kernel.org/stable/c/1a4adfbeb47a212a64539137411f1ca168474d33"
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{
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"url": "https://git.kernel.org/stable/c/1e3db30a88815bae6e9d5db6f64ac735e615a07e"
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"url": "https://git.kernel.org/stable/c/0db1949084e85a72d174a7dea3259b94fe5a9305"
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{
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"url": "https://git.kernel.org/stable/c/507541c2a8eeb76c02bd2511958f73a8cfa3e1bc"
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}
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],
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"title": "ipv6: guard against possible NULL deref in __in6_dev_stats_get()",
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"x_generator": {
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"engine": "bippy-1.2.0"
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"adp": [
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{
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"id": "CVE-2026-80646",
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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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{
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"Automatable": "yes"
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},
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{
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"Technical Impact": "partial"
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],
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"version": "2.0.3",
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"timestamp": "2026-10-16T19:19:19.200610Z"
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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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"dateUpdated": "2026-10-16T19:26:31.747Z"
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}
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]
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}
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} |