CVE-2026-93204
batman-adv: dat: atomically update mac addresses
Published: Sep 17, 2026Updated: Sep 17, 2026 Sources: CVE List NVD
Description
In the Linux kernel, the following vulnerability has been resolved: batman-adv: dat: atomically update mac addresses When a MAC address is updated in batadv_dat_entry_add(), it is done using a simple copy function. A parallel reader might only see parts of this update. In worst case, the reader is transporting the half updated MAC address over the network or is creating an ARP response using it - poisoning the ARP cache. atomic64_t can be used to store the 48 bit of a mac address. A reader will then either see the old mac address or the new one - never a mixture of both.
No summary for this CVE yet.
Affected Products
Linux
oss-projectaka the linux kernel
Exploitability
No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.
References
https://git.kernel.org/stable/c/159360a0de831845c4500b4f8638decdcd624040
git.kernel.org
https://git.kernel.org/stable/c/259db2c04586d40b82c5c3002b1e28b0698a0bb7
git.kernel.org
https://git.kernel.org/stable/c/1674855a5b6eacfe35f4db3095d7055c25467274
git.kernel.org
and 4 more references View all →
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