Tracker / CVE-2026-46233
CVE-2026-46233
Media 5.5
In the Linux kernel, the following vulnerability has been resolved: batman-adv: bla: only purge non-released claims When batadv_bla_purge_claims() goes through the list of claims, it is only traversing the hash list with an rcu_read_lock(). Due to a potential parallel batadv_claim_put(), it can happen that it encounters a claim which was actually in the process of being released+freed by batadv_claim_release(). In this case, backbone_gw is set to NULL before the delayed RCU kfree is started. Calling batadv_bla_claim_get_backbone_gw() is then no longer allowed because it would cause a NULL-ptr derefence. To avoid this, only claims with a valid reference counter must be purged. All others are already taken care of.
Prodotti e versioni affette
| linux | linux_kernel |
|---|---|
| linux | linux_kernel · 3.5 → 5.10.258 |
| linux | linux_kernel · 5.11 → 5.15.209 |
| linux | linux_kernel · 5.16 → 6.1.175 |
| linux | linux_kernel · 6.13 → 6.18.32 |
| linux | linux_kernel · 6.19 → 7.0.9 |
| linux | linux_kernel · 6.2 → 6.6.140 |
| linux | linux_kernel · 6.7 → 6.12.90 |
Analisi
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