CVE-2022-49366

MEDIUM EPSS 14.9%
Published Feb 26, 20251y ago · Modified Jun 17, 20261w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Feb 26, 2025 1y ago
Last Modified Jun 17, 2026 1w ago

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".

CVSS Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
14.9% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Affected Products 3

VendorProductVersionRange
linuxlinux_kernel*≥5.15  –  <5.15.47
linuxlinux_kernel*≥5.16  –  <5.17.15
linuxlinux_kernel*≥5.18  –  <5.18.4

References 4

  • git.kernel.org https://git.kernel.org/stable/c/248d71b440aef829f5cc5f6545ca113ef5062900
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/9758a6653c27867d810de02b4e5697163dda9883
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/cf824b95c12a1abacadbc2d069931963221a3414
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d21a580dafc69aa04f46e6099616146a536b0724
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/248d71b440aef829f5cc5f6545ca113ef5062900
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/9758a6653c27867d810de02b4e5697163dda9883
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/cf824b95c12a1abacadbc2d069931963221a3414
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d21a580dafc69aa04f46e6099616146a536b0724
    Patch