CVE-2021-47355: atm: nicstar: Fix possible use-after-free in nicstar_cleanup()
First published: Tue May 21 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: atm: nicstar: Fix possible use-after-free in nicstar_cleanup() 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.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Linux kernel | <4.4.276 | |
| Linux Linux kernel | >=4.5<4.9.276 | |
| Linux Linux kernel | >=4.10<4.14.240 | |
| Linux Linux kernel | >=4.15<4.19.198 | |
| Linux Linux kernel | >=4.20<5.4.133 | |
| Linux Linux kernel | >=5.5<5.10.51 | |
| Linux Linux kernel | >=5.11<5.12.18 | |
| Linux Linux kernel | >=5.13<5.13.3 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
- https://git.kernel.org/stable/c/99779c9d9ffc7775da6f7fd8a7c93ac61657bed5
- https://git.kernel.org/stable/c/4e2a0848ea2cab0716d46f85a8ccd5fa9a493e51
- https://git.kernel.org/stable/c/c471569632654e57c83512e0fc1ba0dbb4544ad6
- https://git.kernel.org/stable/c/a7a7b2848312cc4c3a42b6e42a8ab2e441857aba
- https://git.kernel.org/stable/c/bdf5334250c69fabf555b7322c75249ea7d5f148
- https://git.kernel.org/stable/c/a7f7c42e31157d1f0871d6a8e1a0b73a6b4ea785
- https://git.kernel.org/stable/c/2f958b6f6ba0854b39be748d21dfe71e0fe6580f
- https://git.kernel.org/stable/c/5b991df8881088448cb223e769e37cab8dd40706
- https://git.kernel.org/stable/c/34e7434ba4e97f4b85c1423a59b2922ba7dff2ea
- agent/title
- agent/references
- agent/weakness
- agent/description
- agent/first-publish-date
- agent/type
- agent/author
- agent/event
- collector/mitre-cve
- source/MITRE
- collector/nvd-api
- source/NVD
- agent/software-canonical-lookup
- agent/severity
- agent/remedy
- agent/last-modified-date
- agent/tags
- agent/softwarecombine
- vendor/linux
- canonical/linux linux kernel
- version/linux linux kernel/4.5
- version/linux linux kernel/4.10
- version/linux linux kernel/4.15
- version/linux linux kernel/4.20
- version/linux linux kernel/5.5
- version/linux linux kernel/5.11
- version/linux linux kernel/5.13