batman-adv: bla: reacquire gw address after skb realloc
Priority MEDIUM 40Published · Updated
Key facts
- Attack vector
- Adjacent 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: bla: reacquire gw address after skb realloc The pskb_may_pull() called by batadv_bla_is_backbone_gw() 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
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00344 28th percentileScored 2026-11-07
Fix Fixed Linux (Linux): 5.10.261, 5.15.212, 6.1.178 +5
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
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-2026-72233
- 2026-10-03 Alias added: GHSA-37f7-6x64-w46m
- 2026-10-16 CISA SSVC decision points changed
- 2026-10-16 Priority changed: LOW → MEDIUM
References
Other 8
- https://git.kernel.org/stable/c/41819c5467b6eb8ab4567f0ac98702ce9b6abbb1
- https://git.kernel.org/stable/c/a9ab19fbca86b32e9a9ae9e1a63e70a7eab3400f
- https://git.kernel.org/stable/c/4a6673c55752a7aa41e28f51660eb981504ca088
- https://git.kernel.org/stable/c/ab2bac47a02637df1128a151e81d3ec14767f4bb
- https://git.kernel.org/stable/c/dc16bbf53cede1baf564bf0c8a861114b64e18b3
- https://git.kernel.org/stable/c/e5e18886aadd3870e2d84e32a9678317fab1dd9e
- https://git.kernel.org/stable/c/f4fb97ecf677cd9c3aa4f3bfc6fbf5b0e4bdbbbf
- https://git.kernel.org/stable/c/cdf3b5af2bc4431e58629e8ad2086b1e9185c761
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Sources
- CVE-2026-72233 · CVE Program
- CVE-2026-72233 · NVD
- FIRST EPSS
- GHSA-37f7-6x64-w46m · GitHub Advisory Database · CC BY 4.0
- CVE-2026-72233 · 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