CVE-2021-47355
"Linux ATM Nicstar Use-After-Free vulnerability"
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.
INFO
Published Date :
May 21, 2024, 3:15 p.m.
Last Modified :
Dec. 26, 2024, 7:29 p.m.
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Remotely Exploitable :
No
Impact Score :
5.9
Exploitability Score :
1.8
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2021-47355.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-47355 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-47355 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Dec. 26, 2024
Action Type Old Value New Value Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Added CWE NIST CWE-416 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to (excluding) 4.4.276 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.5 up to (excluding) 4.9.276 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.10 up to (excluding) 4.14.240 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.15 up to (excluding) 4.19.198 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.20 up to (excluding) 5.4.133 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.5 up to (excluding) 5.10.51 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.12.18 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.13 up to (excluding) 5.13.3 Changed Reference Type https://git.kernel.org/stable/c/2f958b6f6ba0854b39be748d21dfe71e0fe6580f No Types Assigned https://git.kernel.org/stable/c/2f958b6f6ba0854b39be748d21dfe71e0fe6580f Patch Changed Reference Type https://git.kernel.org/stable/c/2f958b6f6ba0854b39be748d21dfe71e0fe6580f No Types Assigned https://git.kernel.org/stable/c/2f958b6f6ba0854b39be748d21dfe71e0fe6580f Patch Changed Reference Type https://git.kernel.org/stable/c/34e7434ba4e97f4b85c1423a59b2922ba7dff2ea No Types Assigned https://git.kernel.org/stable/c/34e7434ba4e97f4b85c1423a59b2922ba7dff2ea Patch Changed Reference Type https://git.kernel.org/stable/c/34e7434ba4e97f4b85c1423a59b2922ba7dff2ea No Types Assigned https://git.kernel.org/stable/c/34e7434ba4e97f4b85c1423a59b2922ba7dff2ea Patch Changed Reference Type https://git.kernel.org/stable/c/4e2a0848ea2cab0716d46f85a8ccd5fa9a493e51 No Types Assigned https://git.kernel.org/stable/c/4e2a0848ea2cab0716d46f85a8ccd5fa9a493e51 Patch Changed Reference Type https://git.kernel.org/stable/c/4e2a0848ea2cab0716d46f85a8ccd5fa9a493e51 No Types Assigned https://git.kernel.org/stable/c/4e2a0848ea2cab0716d46f85a8ccd5fa9a493e51 Patch Changed Reference Type https://git.kernel.org/stable/c/5b991df8881088448cb223e769e37cab8dd40706 No Types Assigned https://git.kernel.org/stable/c/5b991df8881088448cb223e769e37cab8dd40706 Patch Changed Reference Type https://git.kernel.org/stable/c/5b991df8881088448cb223e769e37cab8dd40706 No Types Assigned https://git.kernel.org/stable/c/5b991df8881088448cb223e769e37cab8dd40706 Patch Changed Reference Type https://git.kernel.org/stable/c/99779c9d9ffc7775da6f7fd8a7c93ac61657bed5 No Types Assigned https://git.kernel.org/stable/c/99779c9d9ffc7775da6f7fd8a7c93ac61657bed5 Patch Changed Reference Type https://git.kernel.org/stable/c/99779c9d9ffc7775da6f7fd8a7c93ac61657bed5 No Types Assigned https://git.kernel.org/stable/c/99779c9d9ffc7775da6f7fd8a7c93ac61657bed5 Patch Changed Reference Type https://git.kernel.org/stable/c/a7a7b2848312cc4c3a42b6e42a8ab2e441857aba No Types Assigned https://git.kernel.org/stable/c/a7a7b2848312cc4c3a42b6e42a8ab2e441857aba Patch Changed Reference Type https://git.kernel.org/stable/c/a7a7b2848312cc4c3a42b6e42a8ab2e441857aba No Types Assigned https://git.kernel.org/stable/c/a7a7b2848312cc4c3a42b6e42a8ab2e441857aba Patch Changed Reference Type https://git.kernel.org/stable/c/a7f7c42e31157d1f0871d6a8e1a0b73a6b4ea785 No Types Assigned https://git.kernel.org/stable/c/a7f7c42e31157d1f0871d6a8e1a0b73a6b4ea785 Patch Changed Reference Type https://git.kernel.org/stable/c/a7f7c42e31157d1f0871d6a8e1a0b73a6b4ea785 No Types Assigned https://git.kernel.org/stable/c/a7f7c42e31157d1f0871d6a8e1a0b73a6b4ea785 Patch Changed Reference Type https://git.kernel.org/stable/c/bdf5334250c69fabf555b7322c75249ea7d5f148 No Types Assigned https://git.kernel.org/stable/c/bdf5334250c69fabf555b7322c75249ea7d5f148 Patch Changed Reference Type https://git.kernel.org/stable/c/bdf5334250c69fabf555b7322c75249ea7d5f148 No Types Assigned https://git.kernel.org/stable/c/bdf5334250c69fabf555b7322c75249ea7d5f148 Patch Changed Reference Type https://git.kernel.org/stable/c/c471569632654e57c83512e0fc1ba0dbb4544ad6 No Types Assigned https://git.kernel.org/stable/c/c471569632654e57c83512e0fc1ba0dbb4544ad6 Patch Changed Reference Type https://git.kernel.org/stable/c/c471569632654e57c83512e0fc1ba0dbb4544ad6 No Types Assigned https://git.kernel.org/stable/c/c471569632654e57c83512e0fc1ba0dbb4544ad6 Patch -
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://git.kernel.org/stable/c/2f958b6f6ba0854b39be748d21dfe71e0fe6580f Added Reference https://git.kernel.org/stable/c/34e7434ba4e97f4b85c1423a59b2922ba7dff2ea Added Reference https://git.kernel.org/stable/c/4e2a0848ea2cab0716d46f85a8ccd5fa9a493e51 Added Reference https://git.kernel.org/stable/c/5b991df8881088448cb223e769e37cab8dd40706 Added Reference https://git.kernel.org/stable/c/99779c9d9ffc7775da6f7fd8a7c93ac61657bed5 Added Reference https://git.kernel.org/stable/c/a7a7b2848312cc4c3a42b6e42a8ab2e441857aba Added Reference https://git.kernel.org/stable/c/a7f7c42e31157d1f0871d6a8e1a0b73a6b4ea785 Added Reference https://git.kernel.org/stable/c/bdf5334250c69fabf555b7322c75249ea7d5f148 Added Reference https://git.kernel.org/stable/c/c471569632654e57c83512e0fc1ba0dbb4544ad6 -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 28, 2024
Action Type Old Value New Value -
CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 21, 2024
Action Type Old Value New Value Added 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. Added Reference kernel.org https://git.kernel.org/stable/c/99779c9d9ffc7775da6f7fd8a7c93ac61657bed5 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/4e2a0848ea2cab0716d46f85a8ccd5fa9a493e51 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/c471569632654e57c83512e0fc1ba0dbb4544ad6 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/a7a7b2848312cc4c3a42b6e42a8ab2e441857aba [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/bdf5334250c69fabf555b7322c75249ea7d5f148 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/a7f7c42e31157d1f0871d6a8e1a0b73a6b4ea785 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/2f958b6f6ba0854b39be748d21dfe71e0fe6580f [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/5b991df8881088448cb223e769e37cab8dd40706 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/34e7434ba4e97f4b85c1423a59b2922ba7dff2ea [No types assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-47355 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2021-47355
weaknesses.