CVE-2026-72235batman-adv: retrieve ethhdr after potential skb realloc on RX
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 8.8 HIGH (v3.1, CNA)CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Oct 16, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from c6c8fea29769d998d94fcec9b9f14d4b52b349d3 before 6e189f14d1ea28db212b9d70a02131a7ce518012; from c6c8fea29769d998d94fcec9b9f14d4b52b349d3 before a1820344b180cb55af748f102bc536b5c93164db; from c6c8fea29769d998d94fcec9b9f14d4b52b349d3 before 6abf73589bed3f27ee240c08108feb72bed0b9c6; from c6c8fea29769d998d94fcec9b9f14d4b52b349d3 before f19259395b44af67f3c274e34237c295b526b859; from c6c8fea29769d998d94fcec9b9f14d4b52b349d3 before 2cefa5141cab8ec1e4b24cf585958b13f2e3049d; from c6c8fea29769d998d94fcec9b9f14d4b52b349d3 before 85a71a81854e0e191ad0e533eabb4eff54866feb; from c6c8fea29769d998d94fcec9b9f14d4b52b349d3 before b031fc97e1993d29d6c3a0e86a99140528cf31e8; from c6c8fea29769d998d94fcec9b9f14d4b52b349d3 before 035e1fed892d3d06002a73ff73668f618a514644 | CNA record |
References
- https://git.kernel.org/stable/c/6e189f14d1ea28db212b9d70a02131a7ce518012
- https://git.kernel.org/stable/c/a1820344b180cb55af748f102bc536b5c93164db
- https://git.kernel.org/stable/c/6abf73589bed3f27ee240c08108feb72bed0b9c6
- https://git.kernel.org/stable/c/f19259395b44af67f3c274e34237c295b526b859
- https://git.kernel.org/stable/c/2cefa5141cab8ec1e4b24cf585958b13f2e3049d
- https://git.kernel.org/stable/c/85a71a81854e0e191ad0e533eabb4eff54866feb
- https://git.kernel.org/stable/c/b031fc97e1993d29d6c3a0e86a99140528cf31e8
- https://git.kernel.org/stable/c/035e1fed892d3d06002a73ff73668f618a514644
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.