batman-adv: dat: atomically update mac addresses (Linux Linux)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.20 % · percentile 10 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Received
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.
References
- https://git.kernel.org/stable/c/181012b3d29c51197c235ee5871fc7512c736855
- https://git.kernel.org/stable/c/159360a0de831845c4500b4f8638decdcd624040
- https://git.kernel.org/stable/c/259db2c04586d40b82c5c3002b1e28b0698a0bb7
- https://git.kernel.org/stable/c/1674855a5b6eacfe35f4db3095d7055c25467274
- https://git.kernel.org/stable/c/66238e2a74eca5dabf85b0cd2c3c944e474dc2fd
- https://git.kernel.org/stable/c/a5e4d6cb4f6848b8906c1c493f99a8ccc0638515
- https://git.kernel.org/stable/c/f68038c77a2f38c09c7e2e4f7fa1f4e246fdf2c9
- https://git.kernel.org/stable/c/e6de568d3eda3e3c01c868fabd7a9535d5ee4a73
European references
- ENISA EUVD · EUVD-2026-82312
- GCVE · GCVE-0-2026-93204
CERT-FR advisories
- CERTFR-2026-AVI-1385 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1375 — Multiples vulnérabilités dans le noyau Linux de Debian LTS · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1289 — Multiples vulnérabilités dans le noyau Linux de Debian LTS · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1253 — Multiples vulnérabilités dans le noyau Linux de Debian · cert.ssi.gouv.fr
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected 2f1dfbe185075a50dc8f0490a136377af53a1c62 < 181012b3d29c51197c235ee5871fc7512c736855 ; affected 2f1dfbe185075a50dc8f0490a136377af53a1c62 < 159360a0de831845c4500b4f8638decdcd624040 ; affected 2f1dfbe185075a50dc8f0490a136377af53a1c62 < 259db2c04586d40b82c5c3002b1e28b0698a0bb7 ; affected 2f1dfbe185075a50dc8f0490a136377af53a1c62 < 1674855a5b6eacfe35f4db3095d7055c25467274 ; affected 2f1dfbe185075a50dc8f0490a136377af53a1c62 < 66238e2a74eca5dabf85b0cd2c3c944e474dc2fd ; affected 2f1dfbe185075a50dc8f0490a136377af53a1c62 < a5e4d6cb4f6848b8906c1c493f99a8ccc0638515 |
| Linux · Linux | affected 3.8 ; unaffected 0 < 3.8 ; unaffected 5.10.271 ≤ 5.10.* ; unaffected 5.15.221 ≤ 5.15.* ; unaffected 6.1.188 ≤ 6.1.* ; unaffected 6.6.157 ≤ 6.6.* |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |