Critical severity · published Aug 28, 2026
CVE-2026-80600
batman-adv: dat: acquire ARP hw source only after skb realloc
9.8
CVSS
0.7%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.7% · higher than 54% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
LI
Linux · Linux
b61ec31c85756bbc898fb892555509afe709459a before a82fc217cb7a447313c76ebf9f09b100771b0ddf; b61ec31c85756bbc898fb892555509afe709459a before 86aa79b43e5b561fd3648891165bd7313b541315; b61ec31c85756bbc898fb892555509afe709459a before d755cd001fa2c248e186c1fc3df3d11d97dc843c; b61ec31c85756bbc898fb892555509afe709459a before 3404be97b940a9b1ae1aea5fdbc6cdbbe9cd5146; b61ec31c85756bbc898fb892555509afe709459a before 01678c53a7717a748aee388b6839e7b9761d641c; b61ec31c85756bbc898fb892555509afe709459a before 3b4c70c40f2e135a50cd38fc61c7d23a296a9981; +3 more · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-80600
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-80600
git.kernel.org
https://git.kernel.org/stable/c/01678c53a7717a748aee388b6839e7b9761d641c
git.kernel.org
https://git.kernel.org/stable/c/059a70e1d12d6d99310e0599d37b0323557569a8
git.kernel.org
https://git.kernel.org/stable/c/3404be97b940a9b1ae1aea5fdbc6cdbbe9cd5146
git.kernel.org
https://git.kernel.org/stable/c/3b4c70c40f2e135a50cd38fc61c7d23a296a9981
git.kernel.org
https://git.kernel.org/stable/c/48067b2ae4504500a7093d9e1e16b42e70330480
git.kernel.org
https://git.kernel.org/stable/c/86aa79b43e5b561fd3648891165bd7313b541315
More from Linux
9.8
CVE-2025-39682
tls: fix handling of zero-length records on the rx_list
8.8
CVE-2026-53266
netfilter: bridge: make ebt_snat ARP rewrite writable
7.8
CVE-2026-53362
ipv6: account for fraggap on the paged allocation path
7.8
CVE-2026-46300
net: skbuff: preserve shared-frag marker during coalescing
7.8
CVE-2026-31431
crypto: algif_aead - Revert to operating out-of-place