CVE-2024-26686
Linux Kernel Spinlock Lock-Dependency Vulnerability in procSubsystem
Description
In the Linux kernel, the following vulnerability has been resolved: fs/proc: do_task_stat: use sig->stats_lock to gather the threads/children stats lock_task_sighand() can trigger a hard lockup. If NR_CPUS threads call do_task_stat() at the same time and the process has NR_THREADS, it will spin with irqs disabled O(NR_CPUS * NR_THREADS) time. Change do_task_stat() to use sig->stats_lock to gather the statistics outside of ->siglock protected section, in the likely case this code will run lockless.
INFO
Published Date :
April 3, 2024, 3:15 p.m.
Last Modified :
May 2, 2025, 7:15 a.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update the affected Linux kernel packages.
- Reboot the system after updating the kernel.
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-2024-26686.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2024-26686 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-2024-26686
weaknesses.
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-2024-26686 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2024-26686 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.
-
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 02, 2025
Action Type Old Value New Value Added Reference https://git.kernel.org/stable/c/0c35d1914353799c54fa1843fe7dea6fcbcdbac5 Added Reference https://git.kernel.org/stable/c/4fe85bdaabd63f8f8579b24a10ed597c9c482164 -
Initial Analysis by [email protected]
Mar. 17, 2025
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Added CWE CWE-667 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:6.8:rc1:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.8:rc3:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.8:rc2:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (excluding) 6.1.82 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.2 from (excluding) 6.7.6 Added Reference Type kernel.org: https://git.kernel.org/stable/c/27978243f165b44e342f28f449b91327944ea071 Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/27978243f165b44e342f28f449b91327944ea071 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/3820b0fac7732a653bcc6f6ac20c1d72e697f8f6 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/7601df8031fd67310af891897ef6cc0df4209305 Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/7601df8031fd67310af891897ef6cc0df4209305 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/cf4b8c39b9a0bd81c47afc7ef62914a62dd5ec4d Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/cf4b8c39b9a0bd81c47afc7ef62914a62dd5ec4d Types: Patch -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Dec. 09, 2024
Action Type Old Value New Value Added Reference https://git.kernel.org/stable/c/3820b0fac7732a653bcc6f6ac20c1d72e697f8f6 -
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/27978243f165b44e342f28f449b91327944ea071 Added Reference https://git.kernel.org/stable/c/7601df8031fd67310af891897ef6cc0df4209305 Added Reference https://git.kernel.org/stable/c/cf4b8c39b9a0bd81c47afc7ef62914a62dd5ec4d -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 29, 2024
Action Type Old Value New Value -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 14, 2024
Action Type Old Value New Value -
CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Apr. 03, 2024
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: fs/proc: do_task_stat: use sig->stats_lock to gather the threads/children stats lock_task_sighand() can trigger a hard lockup. If NR_CPUS threads call do_task_stat() at the same time and the process has NR_THREADS, it will spin with irqs disabled O(NR_CPUS * NR_THREADS) time. Change do_task_stat() to use sig->stats_lock to gather the statistics outside of ->siglock protected section, in the likely case this code will run lockless. Added Reference kernel.org https://git.kernel.org/stable/c/cf4b8c39b9a0bd81c47afc7ef62914a62dd5ec4d [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/27978243f165b44e342f28f449b91327944ea071 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/7601df8031fd67310af891897ef6cc0df4209305 [No types assigned]