Description
In the Linux kernel, the following vulnerability has been resolved:
ksmbd: fix reference count leak in smb_check_perm_dacl()
The issue happens in a specific path in smb_check_perm_dacl(). When "id" and "uid" have the same value, the function simply jumps out of the loop without decrementing the reference count of the object "posix_acls", which is increased by get_acl() earlier. This may result in memory leaks.
Fix it by decreasing the reference count of "posix_acls" before jumping to label "check_access_bits".
Metrics
CVSS 3.1 5.5/10
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HAffected software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= 777cad1604d68ed4379ec899d1f7d2f6a29f01f0, < cf824b95c12a1abacadbc2d069931963221a3414; >= 777cad1604d68ed4379ec899d1f7d2f6a29f01f0, < 248d71b440aef829f5cc5f6545ca113ef5062900; >= 777cad1604d68ed4379ec899d1f7d2f6a29f01f0, < 9758a6653c27867d810de02b4e5697163dda9883; >= 777cad1604d68ed4379ec899d1f7d2f6a29f01f0, < d21a580dafc69aa04f46e6099616146a536b0724 |
| Linux | Linux | 5.15 |
References
- https://git.kernel.org/stable/c/248d71b440aef829f5cc5f6545ca113ef5062900Patch
- https://git.kernel.org/stable/c/9758a6653c27867d810de02b4e5697163dda9883Patch
- https://git.kernel.org/stable/c/cf824b95c12a1abacadbc2d069931963221a3414Patch
- https://git.kernel.org/stable/c/d21a580dafc69aa04f46e6099616146a536b0724Patch
Timeline
- Published
- Feb 26, 2025
- Last modified
- Jun 17, 2026
- NVD status
- Modified