batman-adv: dat: acquire ARP hw source only after skb realloc
Priority MEDIUM 43Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA.
Summary
In the Linux kernel, the following vulnerability has been resolved: batman-adv: dat: acquire ARP hw source only after skb realloc The pskb_may_pull() called by batadv_get_vid() 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.
Why it matters now
EPSS 0.00734 54th percentileScored 2026-11-07
Fix Fixed Linux (Linux): 5.10.261, 5.15.212, 6.1.178 +5
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
Remediation
- Fix · CNA Linux (Linux) Fixed in 5.10.261, 5.15.212, 6.1.178, 6.6.145, 6.12.97, 6.18.40, 7.1.5, 7.2
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
Not affected: 5 products
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
Timeline
- 2026-10-02 Threatist record created from CVE-2026-80600
- 2026-10-03 Alias added: GHSA-m5gp-6f33-45m5
References
Other 8
- https://git.kernel.org/stable/c/a82fc217cb7a447313c76ebf9f09b100771b0ddf
- https://git.kernel.org/stable/c/86aa79b43e5b561fd3648891165bd7313b541315
- https://git.kernel.org/stable/c/d755cd001fa2c248e186c1fc3df3d11d97dc843c
- https://git.kernel.org/stable/c/3404be97b940a9b1ae1aea5fdbc6cdbbe9cd5146
- https://git.kernel.org/stable/c/01678c53a7717a748aee388b6839e7b9761d641c
- https://git.kernel.org/stable/c/3b4c70c40f2e135a50cd38fc61c7d23a296a9981
- https://git.kernel.org/stable/c/059a70e1d12d6d99310e0599d37b0323557569a8
- https://git.kernel.org/stable/c/48067b2ae4504500a7093d9e1e16b42e70330480
More Linux vulnerabilities
- TI-2025-26358 tls: fix handling of zero-length records on the rx_list KEVCVSS 3.1CRITICAL 9.8
- TI-2026-38352 netfilter: bridge: make ebt_snat ARP rewrite writable KEVCVSS 3.1HIGH 8.8
- TI-2021-02452 Incorrect authorization in Ubuntu linux kernel KEVCVSS 3.1HIGH 8.8
- TI-2013-05264 The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the… KEVCVSS 3.1HIGH 8.8
- TI-2022-00125 Integer overflow in kernel KEVCVSS 3.1HIGH 8.4
- TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
Sources
- CVE-2026-80600 · CVE Program
- CVE-2026-80600 · NVD
- FIRST EPSS
- GHSA-m5gp-6f33-45m5 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-80600 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences