CVE-2025-22072
spufs: fix gang directory lifetimes
Description
In the Linux kernel, the following vulnerability has been resolved: spufs: fix gang directory lifetimes prior to "[POWERPC] spufs: Fix gang destroy leaks" we used to have a problem with gang lifetimes - creation of a gang returns opened gang directory, which normally gets removed when that gets closed, but if somebody has created a context belonging to that gang and kept it alive until the gang got closed, removal failed and we ended up with a leak. Unfortunately, it had been fixed the wrong way. Dentry of gang directory was no longer pinned, and rmdir on close was gone. One problem was that failure of open kept calling simple_rmdir() as cleanup, which meant an unbalanced dput(). Another bug was in the success case - gang creation incremented link count on root directory, but that was no longer undone when gang got destroyed. Fix consists of * reverting the commit in question * adding a counter to gang, protected by ->i_rwsem of gang directory inode. * having it set to 1 at creation time, dropped in both spufs_dir_close() and spufs_gang_close() and bumped in spufs_create_context(), provided that it's not 0. * using simple_recursive_removal() to take the gang directory out when counter reaches zero.
INFO
Published Date :
April 16, 2025, 3:16 p.m.
Last Modified :
Nov. 3, 2025, 8:17 p.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 Linux kernel to a version with the fix.
- Revert the problematic commit if manually managing code.
- Ensure gang directory inode counters are handled correctly.
- Utilize simple_recursive_removal for directory cleanup.
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-2025-22072.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-22072 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-2025-22072
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-2025-22072 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2025-22072 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.
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CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 03, 2025
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html -
Initial Analysis by [email protected]
Oct. 31, 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 NVD-CWE-noinfo Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:2.6.22:rc5:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:2.6.22:rc7:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:2.6.22:rc6:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.13 up to (excluding) 6.13.11 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.14 up to (excluding) 6.14.2 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.2 up to (excluding) 6.6.87 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 2.6.23 up to (excluding) 6.1.134 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.7 up to (excluding) 6.12.23 *cpe:2.3:o:linux:linux_kernel:2.6.22:-:*:*:*:*:*:* Added Reference Type kernel.org: https://git.kernel.org/stable/c/029d8c711f5e5fe8cf63e8a4a1a140a06e224e45 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/324f280806aab28ef757aecc18df419676c10ef8 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/880e7b3da2e765c1f90c94c0539be039e96c7062 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/903733782f3ae28a2f7fe4dfb47c7fe3e079a528 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/c134deabf4784e155d360744d4a6a835b9de4dd4 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/fc646a6c6d14b5d581f162a7e32999f789e3a3ac Types: Patch -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Apr. 16, 2025
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: spufs: fix gang directory lifetimes prior to "[POWERPC] spufs: Fix gang destroy leaks" we used to have a problem with gang lifetimes - creation of a gang returns opened gang directory, which normally gets removed when that gets closed, but if somebody has created a context belonging to that gang and kept it alive until the gang got closed, removal failed and we ended up with a leak. Unfortunately, it had been fixed the wrong way. Dentry of gang directory was no longer pinned, and rmdir on close was gone. One problem was that failure of open kept calling simple_rmdir() as cleanup, which meant an unbalanced dput(). Another bug was in the success case - gang creation incremented link count on root directory, but that was no longer undone when gang got destroyed. Fix consists of * reverting the commit in question * adding a counter to gang, protected by ->i_rwsem of gang directory inode. * having it set to 1 at creation time, dropped in both spufs_dir_close() and spufs_gang_close() and bumped in spufs_create_context(), provided that it's not 0. * using simple_recursive_removal() to take the gang directory out when counter reaches zero. Added Reference https://git.kernel.org/stable/c/029d8c711f5e5fe8cf63e8a4a1a140a06e224e45 Added Reference https://git.kernel.org/stable/c/324f280806aab28ef757aecc18df419676c10ef8 Added Reference https://git.kernel.org/stable/c/880e7b3da2e765c1f90c94c0539be039e96c7062 Added Reference https://git.kernel.org/stable/c/903733782f3ae28a2f7fe4dfb47c7fe3e079a528 Added Reference https://git.kernel.org/stable/c/c134deabf4784e155d360744d4a6a835b9de4dd4 Added Reference https://git.kernel.org/stable/c/fc646a6c6d14b5d581f162a7e32999f789e3a3ac