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CVE-2021-47355 Detail

Description

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.


Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

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Hyperlink Resource
https://git.kernel.org/stable/c/2f958b6f6ba0854b39be748d21dfe71e0fe6580f
https://git.kernel.org/stable/c/2f958b6f6ba0854b39be748d21dfe71e0fe6580f
https://git.kernel.org/stable/c/34e7434ba4e97f4b85c1423a59b2922ba7dff2ea
https://git.kernel.org/stable/c/34e7434ba4e97f4b85c1423a59b2922ba7dff2ea
https://git.kernel.org/stable/c/4e2a0848ea2cab0716d46f85a8ccd5fa9a493e51
https://git.kernel.org/stable/c/4e2a0848ea2cab0716d46f85a8ccd5fa9a493e51
https://git.kernel.org/stable/c/5b991df8881088448cb223e769e37cab8dd40706
https://git.kernel.org/stable/c/5b991df8881088448cb223e769e37cab8dd40706
https://git.kernel.org/stable/c/99779c9d9ffc7775da6f7fd8a7c93ac61657bed5
https://git.kernel.org/stable/c/99779c9d9ffc7775da6f7fd8a7c93ac61657bed5
https://git.kernel.org/stable/c/a7a7b2848312cc4c3a42b6e42a8ab2e441857aba
https://git.kernel.org/stable/c/a7a7b2848312cc4c3a42b6e42a8ab2e441857aba
https://git.kernel.org/stable/c/a7f7c42e31157d1f0871d6a8e1a0b73a6b4ea785
https://git.kernel.org/stable/c/a7f7c42e31157d1f0871d6a8e1a0b73a6b4ea785
https://git.kernel.org/stable/c/bdf5334250c69fabf555b7322c75249ea7d5f148
https://git.kernel.org/stable/c/bdf5334250c69fabf555b7322c75249ea7d5f148
https://git.kernel.org/stable/c/c471569632654e57c83512e0fc1ba0dbb4544ad6
https://git.kernel.org/stable/c/c471569632654e57c83512e0fc1ba0dbb4544ad6

Weakness Enumeration

CWE-ID CWE Name Source

Change History

3 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2021-47355
NVD Published Date:
05/21/2024
NVD Last Modified:
11/21/2024
Source:
kernel.org