7.8

CVE-2026-22988: arp: do not assume dev_hard_header() does not change skb->head

Modified
AliasesUBUNTU-CVE-2026-22988DEBIAN-CVE-2026-22988
Published 23-01-2026Last modified 05-08-2026

Vulnerability summary

CVE-2026-22988 is a high (CVSS 7.8) vulnerability in linux. EPSS estimates a 0.14% chance of exploitation in the next 30 days, higher than 3.6% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 7.8, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
7.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.14%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 15 · Related 13
MGASA-2026-0097MGASA-2026-0098OPENSUSE-SU-2026:20287-1SUSE-SU-2026:0447-1SUSE-SU-2026:0472-1SUSE-SU-2026:0473-1

Timeline

  1. 23-01-2026
    PublishedVulnerability first disclosed.
  2. 05-08-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.14%

Chance of exploitation in the next 30 days

Percentile

4%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.14% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu87 products
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
  • linux-aws-5.13All versions (No fix recorded)
  • linux-aws-5.19All versions (No fix recorded)
Linux2 products
  • linux≥ 17e7386234f740f3e7d5e58a47b5847ea34c3bc2, < e432dbff342b95fe44645f9a90fcf333c80f4b5e | ≥ 41a1a3140aff295dee8063906f70a514548105e8, < 393525dee5c39acff8d6705275d7fcaabcfb7f0a | ≥ adee129db814474f2f81207bd182bf343832a52e, < 70bddc16491ef4681f3569b3a2c80309a3edcdd1 | ≥ 1717357007db150c2d703f13f5695460e960f26c, < 029935507d0af6553c45380fbf6feecf756fd226 | ≥ 5fe210533e3459197eabfdbf97327dacbdc04d60, < dd6ccec088adff4bdf33e2b2dd102df20a7128fa | ≥ 91a2b25be07ce1a7549ceebbe82017551d2eec92, < 949647e7771a4a01963fe953a96d81fba7acecf3 | ≥ db5b4e39c4e63700c68a7e65fc4e1f1375273476, < c92510f5e3f82ba11c95991824a41e59a9c5ed81 | ≥ 6.1.160, < 6.1.161 | ≥ 6.6.120, < 6.6.121 | ≥ 6.12.64, < 6.12.66 | ≥ 6.18.4, < 6.18.6
  • linux_kernel≥ 6.12.64, < 6.12.66 | ≥ 6.18.4, < 6.18.6 | 6.1.160 | 6.6.120 | 6.19:rc4
Debian1 product
  • linux< 6.18.8-1

3 vendors · 90 products

References

11 links
Show all 11 references