CVE-2026-93204
batman-adv: dat: atomically update mac addresses
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Sep 17, 2026 |
Stay Ahead of the Next One
Get instant alerts for linux linux
Be the first to know when new unknown vulnerabilities affecting linux linux are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
Affected Versions
Linux / Linux
2f1dfbe185075a50dc8f0490a136377af53a1c62 < 159360a0de831845c4500b4f8638decdcd624040 2f1dfbe185075a50dc8f0490a136377af53a1c62 < 259db2c04586d40b82c5c3002b1e28b0698a0bb7 2f1dfbe185075a50dc8f0490a136377af53a1c62 < 1674855a5b6eacfe35f4db3095d7055c25467274 2f1dfbe185075a50dc8f0490a136377af53a1c62 < 66238e2a74eca5dabf85b0cd2c3c944e474dc2fd 2f1dfbe185075a50dc8f0490a136377af53a1c62 < a5e4d6cb4f6848b8906c1c493f99a8ccc0638515 2f1dfbe185075a50dc8f0490a136377af53a1c62 < f68038c77a2f38c09c7e2e4f7fa1f4e246fdf2c9 2f1dfbe185075a50dc8f0490a136377af53a1c62 < e6de568d3eda3e3c01c868fabd7a9535d5ee4a73
Linux / Linux
3.8
References
git.kernel.org: 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: https://git.kernel.org/stable/c/66238e2a74eca5dabf85b0cd2c3c944e474dc2fd git.kernel.org: https://git.kernel.org/stable/c/a5e4d6cb4f6848b8906c1c493f99a8ccc0638515 git.kernel.org: https://git.kernel.org/stable/c/f68038c77a2f38c09c7e2e4f7fa1f4e246fdf2c9 git.kernel.org: https://git.kernel.org/stable/c/e6de568d3eda3e3c01c868fabd7a9535d5ee4a73