CVE-2026-72235batman-adv: retrieve ethhdr after potential skb realloc on RX
- 8.8HighCVSS base score
- 0.34%Exploitation in 30 daysEPSS · top 72% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
In the Linux kernel, the following vulnerability has been resolved: batman-adv: retrieve ethhdr after potential skb realloc on RX pskb_may_pull() in batadv_interface_rx() could reallocate the buffer behind the skb. Variables which were pointing to the old buffer need to be reassigned to avoid an use-after-free. This was done correctly for the VLAN header but missed for the ethernet header which is later used for the TT and AP isolation handling.
Timeline
ID reserved
By Linux
- 6 days later
· 6 days later
Published
- 2 months later
· 2 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High8.8 | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Received | 3.1 | High8.8 | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.34% · top 72% of all CVEs (12 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.8.
Affected products
- affected c6c8fea29769d998d94fcec9b9f14d4b52b349d3 – < 6e189f14d1ea28db212b9d70a02131a7ce518012
- affected c6c8fea29769d998d94fcec9b9f14d4b52b349d3 – < a1820344b180cb55af748f102bc536b5c93164db
- affected c6c8fea29769d998d94fcec9b9f14d4b52b349d3 – < 6abf73589bed3f27ee240c08108feb72bed0b9c6
- affected c6c8fea29769d998d94fcec9b9f14d4b52b349d3 – < f19259395b44af67f3c274e34237c295b526b859
- affected c6c8fea29769d998d94fcec9b9f14d4b52b349d3 – < 2cefa5141cab8ec1e4b24cf585958b13f2e3049d
- affected c6c8fea29769d998d94fcec9b9f14d4b52b349d3 – < 85a71a81854e0e191ad0e533eabb4eff54866feb
- affected c6c8fea29769d998d94fcec9b9f14d4b52b349d3 – < b031fc97e1993d29d6c3a0e86a99140528cf31e8
- affected c6c8fea29769d998d94fcec9b9f14d4b52b349d3 – < 035e1fed892d3d06002a73ff73668f618a514644
- affected 2.6.38
- unaffected < 2.6.38
- unaffected 5.10.261 – ≤ 5.10.*
- unaffected 5.15.212 – ≤ 5.15.*
- unaffected 6.1.178 – ≤ 6.1.*
- unaffected 6.6.145 – ≤ 6.6.*
- unaffected 6.12.97 – ≤ 6.12.*
- unaffected 6.18.40 – ≤ 6.18.*
- unaffected 7.1.5 – ≤ 7.1.*
- unaffected 7.2 – ≤ *
References
References8
- https://git.kernel.org/stable/c/6e189f14d1ea28db212b9d70a02131a7ce518012 (opens in a new tab)
- https://git.kernel.org/stable/c/a1820344b180cb55af748f102bc536b5c93164db (opens in a new tab)
- https://git.kernel.org/stable/c/6abf73589bed3f27ee240c08108feb72bed0b9c6 (opens in a new tab)
- https://git.kernel.org/stable/c/f19259395b44af67f3c274e34237c295b526b859 (opens in a new tab)
- https://git.kernel.org/stable/c/2cefa5141cab8ec1e4b24cf585958b13f2e3049d (opens in a new tab)
- https://git.kernel.org/stable/c/85a71a81854e0e191ad0e533eabb4eff54866feb (opens in a new tab)
- https://git.kernel.org/stable/c/b031fc97e1993d29d6c3a0e86a99140528cf31e8 (opens in a new tab)
- https://git.kernel.org/stable/c/035e1fed892d3d06002a73ff73668f618a514644 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-59134 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-72235)Record last updated .