197 lines
10 KiB
JSON
197 lines
10 KiB
JSON
{
|
|
"dataType": "CVE_RECORD",
|
|
"dataVersion": "5.2",
|
|
"cveMetadata": {
|
|
"cveId": "CVE-2026-22988",
|
|
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
|
|
"state": "PUBLISHED",
|
|
"assignerShortName": "Linux",
|
|
"dateReserved": "2026-01-13T15:37:45.937Z",
|
|
"datePublished": "2026-01-23T15:24:09.756Z",
|
|
"dateUpdated": "2026-08-05T12:19:56.911Z"
|
|
},
|
|
"containers": {
|
|
"cna": {
|
|
"providerMetadata": {
|
|
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
|
|
"shortName": "Linux",
|
|
"dateUpdated": "2026-08-05T12:19:56.911Z"
|
|
},
|
|
"descriptions": [
|
|
{
|
|
"lang": "en",
|
|
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\narp: do not assume dev_hard_header() does not change skb->head\n\narp_create() is the only dev_hard_header() caller\nmaking assumption about skb->head being unchanged.\n\nA recent commit broke this assumption.\n\nInitialize @arp pointer after dev_hard_header() call."
|
|
}
|
|
],
|
|
"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 demonstrated trigger path is a local rtnetlink sendmsg that changes network device state and causes gratuitous ARP generation through arp_create(). Remote ARP paths can call arp_create(), but the UAF condition depends on locally controlled virtual device/headroom state such as ip6gre stacking.\nAC:L - Once the affected device configuration is present, triggering arp_create() and the ip6gre_header() head expansion is straightforward. Any needed setup or race is controlled by the local attacker through netlink operations.\nPR:L - The relevant rtnetlink operations require CAP_NET_ADMIN in the target network namespace. This is low privilege because an unprivileged local user can obtain CAP_NET_ADMIN in a new user/network namespace on systems with user namespaces enabled.\nUI:N - No victim action is required after the attacker performs the local network configuration and trigger operation. The vulnerable path runs in kernel networking code.\nS:U - The corruption occurs within the kernel networking subsystem and impacts the same kernel security authority. It does not cross a VM, IOMMU, or other separate security boundary.\nC:H - The bug is a slab use-after-free write after pskb_expand_head() moves skb->head, leaving arp_create() writing through a stale pointer. Kernel UAF memory corruption can be leveraged for information disclosure, so confidentiality impact is high.\nI:H - The stale ARP header pointer is used for attacker-influenced writes into freed kernel heap memory. This is memory corruption with plausible control-flow or object corruption exploitation, so integrity impact is high.\nA:H - KASAN reports confirm a slab-use-after-free write in arp_create(), and such corruption can directly crash or panic the kernel. Repeated triggering can cause system-wide denial of service."
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"affected": [
|
|
{
|
|
"product": "Linux",
|
|
"vendor": "Linux",
|
|
"defaultStatus": "unaffected",
|
|
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
|
|
"programFiles": [
|
|
"net/ipv4/arp.c"
|
|
],
|
|
"versions": [
|
|
{
|
|
"version": "17e7386234f740f3e7d5e58a47b5847ea34c3bc2",
|
|
"lessThan": "e432dbff342b95fe44645f9a90fcf333c80f4b5e",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "41a1a3140aff295dee8063906f70a514548105e8",
|
|
"lessThan": "393525dee5c39acff8d6705275d7fcaabcfb7f0a",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "adee129db814474f2f81207bd182bf343832a52e",
|
|
"lessThan": "70bddc16491ef4681f3569b3a2c80309a3edcdd1",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "1717357007db150c2d703f13f5695460e960f26c",
|
|
"lessThan": "029935507d0af6553c45380fbf6feecf756fd226",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "5fe210533e3459197eabfdbf97327dacbdc04d60",
|
|
"lessThan": "dd6ccec088adff4bdf33e2b2dd102df20a7128fa",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "91a2b25be07ce1a7549ceebbe82017551d2eec92",
|
|
"lessThan": "949647e7771a4a01963fe953a96d81fba7acecf3",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "db5b4e39c4e63700c68a7e65fc4e1f1375273476",
|
|
"lessThan": "c92510f5e3f82ba11c95991824a41e59a9c5ed81",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"product": "Linux",
|
|
"vendor": "Linux",
|
|
"defaultStatus": "unaffected",
|
|
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
|
|
"programFiles": [
|
|
"net/ipv4/arp.c"
|
|
],
|
|
"versions": [
|
|
{
|
|
"version": "6.1.160",
|
|
"lessThan": "6.1.161",
|
|
"status": "affected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.6.120",
|
|
"lessThan": "6.6.121",
|
|
"status": "affected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.12.64",
|
|
"lessThan": "6.12.66",
|
|
"status": "affected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.18.4",
|
|
"lessThan": "6.18.6",
|
|
"status": "affected",
|
|
"versionType": "semver"
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"cpeApplicability": [
|
|
{
|
|
"nodes": [
|
|
{
|
|
"operator": "OR",
|
|
"negate": false,
|
|
"cpeMatch": [
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "6.1.160",
|
|
"versionEndExcluding": "6.1.161"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "6.6.120",
|
|
"versionEndExcluding": "6.6.121"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "6.12.64",
|
|
"versionEndExcluding": "6.12.66"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "6.18.4",
|
|
"versionEndExcluding": "6.18.6"
|
|
}
|
|
]
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"references": [
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/e432dbff342b95fe44645f9a90fcf333c80f4b5e"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/393525dee5c39acff8d6705275d7fcaabcfb7f0a"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/70bddc16491ef4681f3569b3a2c80309a3edcdd1"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/029935507d0af6553c45380fbf6feecf756fd226"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/dd6ccec088adff4bdf33e2b2dd102df20a7128fa"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/949647e7771a4a01963fe953a96d81fba7acecf3"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/c92510f5e3f82ba11c95991824a41e59a9c5ed81"
|
|
}
|
|
],
|
|
"title": "arp: do not assume dev_hard_header() does not change skb->head",
|
|
"x_generator": {
|
|
"engine": "bippy-1.2.0"
|
|
}
|
|
}
|
|
}
|
|
} |