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CVE-2022-49366

17
FAUCET Score

CVE-2022-49366 is a memory leak vulnerability in the Linux kernel's ksmbd module, specifically within the smb_check_perm_dacl() function, affecting Linux kernel versions. This medium-severity flaw (CVSS 5.5) arises from a reference count leak of the "posix_acls" object, leading to a denial of service (A:H) due to resource exhaustion, with local access (AV:L) and low complexity (AC:L) required. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
>= 5.15, < 5.15.47CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.16, < 5.17.15CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.18, < 5.18.4CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

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 Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.26%
Probability of exploitation in next 30 days
EPSS Percentile
17.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0026 is in the 71st percentile among its peer group of 15,940 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

redhatCVE-2022-49366Moderate

kernel: ksmbd: fix reference count leak in smb_check_perm_dacl()

Feb 26, 2025

References

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