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CVE-2021-47324 In the Linux kernel, the following vulnerability has been resolved: watchdog: Fix possible use-after-free in…

Description

In the Linux kernel, the following vulnerability has been resolved: watchdog: Fix possible use-after-free in wdt_startup() This module's remove path calls del_timer(). However, that function does not wait until the timer handler finishes. This means that the timer handler may still be running after the driver's remove function has finished, which would result in a use-after-free. Fix by calling del_timer_sync(), which makes sure the timer handler has finished, and unable to re-schedule itself.

Produits et versions touchés

Produit Versions touchées Corrigé en
Linux 5.14 premières → < 5.14 5.14
Linux 5.13 premières → < 5.13.4 5.13.4
Linux 5.12 premières → < 5.12.19 5.12.19
Linux 5.10 premières → < 5.10.52 5.10.52
Linux 5.4 premières → < 5.4.134 5.4.134
Linux 4.19 premières → < 4.19.198 4.19.198
Linux 4.14 premières → < 4.14.240 4.14.240
Linux 4.9 premières → < 4.9.276 4.9.276
Linux 4.4 premières → < 4.4.276 4.4.276
Afficher les 2 autres branches
Produit Versions touchées Corrigé en
Linux 2.6.12 Pas de correctif indiqué
linux_kernel Versions non publiées

Références

Chronologie

  1. Publiée
  2. Dernière modification

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