arp: do not assume dev_hard_header() does not change skb->head
Summary
| CVE | CVE-2026-22988 |
|---|---|
| State | PUBLISHED |
| Assigner | Linux |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-01-23 16:15:54 UTC |
| Updated | 2026-04-27 14:16:27 UTC |
| Description | In the Linux kernel, the following vulnerability has been resolved: arp: do not assume dev_hard_header() does not change skb->head arp_create() is the only dev_hard_header() caller making assumption about skb->head being unchanged. A recent commit broke this assumption. Initialize @arp pointer after dev_hard_header() call. |
Risk And Classification
Primary CVSS: v3.1 5.5 MEDIUM from [email protected]
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Problem Types: NVD-CWE-noinfo
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Primary | 5.5 | MEDIUM | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| 3.1 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | Secondary | 7.8 | HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| 3.1 | CNA | DECLARED | 7.8 | HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
CVSS v3.1 Breakdown
Attack Vector
LocalAttack Complexity
LowPrivileges Required
LowUser Interaction
NoneScope
UnchangedConfidentiality
NoneIntegrity
NoneAvailability
HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Operating System | Linux | Linux Kernel | All | All | All | All |
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Linux | Linux | affected 17e7386234f740f3e7d5e58a47b5847ea34c3bc2 e432dbff342b95fe44645f9a90fcf333c80f4b5e git | Not specified |
| CNA | Linux | Linux | affected 41a1a3140aff295dee8063906f70a514548105e8 393525dee5c39acff8d6705275d7fcaabcfb7f0a git | Not specified |
| CNA | Linux | Linux | affected adee129db814474f2f81207bd182bf343832a52e 70bddc16491ef4681f3569b3a2c80309a3edcdd1 git | Not specified |
| CNA | Linux | Linux | affected 1717357007db150c2d703f13f5695460e960f26c 029935507d0af6553c45380fbf6feecf756fd226 git | Not specified |
| CNA | Linux | Linux | affected 5fe210533e3459197eabfdbf97327dacbdc04d60 dd6ccec088adff4bdf33e2b2dd102df20a7128fa git | Not specified |
| CNA | Linux | Linux | affected 91a2b25be07ce1a7549ceebbe82017551d2eec92 949647e7771a4a01963fe953a96d81fba7acecf3 git | Not specified |
| CNA | Linux | Linux | affected db5b4e39c4e63700c68a7e65fc4e1f1375273476 c92510f5e3f82ba11c95991824a41e59a9c5ed81 git | Not specified |
| CNA | Linux | Linux | affected 6.1.160 6.1.161 semver | Not specified |
| CNA | Linux | Linux | affected 6.6.120 6.6.121 semver | Not specified |
| CNA | Linux | Linux | affected 6.12.64 6.12.66 semver | Not specified |
| CNA | Linux | Linux | affected 6.18.4 6.18.6 semver | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| git.kernel.org/stable/c/dd6ccec088adff4bdf33e2b2dd102df20a7128fa | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | Patch |
| git.kernel.org/stable/c/70bddc16491ef4681f3569b3a2c80309a3edcdd1 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | Patch |
| git.kernel.org/stable/c/393525dee5c39acff8d6705275d7fcaabcfb7f0a | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | Patch |
| git.kernel.org/stable/c/029935507d0af6553c45380fbf6feecf756fd226 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | Patch |
| git.kernel.org/stable/c/949647e7771a4a01963fe953a96d81fba7acecf3 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | Patch |
| git.kernel.org/stable/c/c92510f5e3f82ba11c95991824a41e59a9c5ed81 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | Patch |
| git.kernel.org/stable/c/e432dbff342b95fe44645f9a90fcf333c80f4b5e | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | Patch |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.