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CVE-2022-49688

17
FAUCET Score

CVE-2022-49688 is a NULL pointer dereference vulnerability (CWE-476) in the Linux kernel's AFS filesystem module. Specifically, it occurs when stat'ing a directory within /afs due to an uninitialized volume pointer in pseudo-inodes, leading to a kernel oops. This vulnerability has a CVSS score of 5.5 (Medium), indicating a local attack vector with low complexity, requiring low privileges, and resulting in high availability impact (system crash). There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
>= 4.19.245, < 4.19.250CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.4.196, < 5.4.202CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.10.118, < 5.10.127CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.15.42, < 5.15.51CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.17.10, < 5.18CPE 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
0.30%
Probability of exploitation in next 30 days
EPSS Percentile
22.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0030 is in the 78th 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

Patch Available

Vendor Patches (2)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: kernel-0:5.14.0-284.11.1.el9_2
View patch
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: kernel-rt

Vendor Advisories (1)

redhatCVE-2022-49688Low

kernel: afs: Fix dynamic root getattr

Feb 26, 2025

References

git.kernel.org / stable/c/2b2bba96526f25f2eba74ecadb031de2e05a83ce
Patch
git.kernel.org / stable/c/65c24caf1b9f5b08397c6e805ec24ebc390c6e4d
Patch
git.kernel.org / stable/c/7844ceada44eca740d31beb3d97b8511b1ca0a9b
Patch
git.kernel.org / stable/c/7b564e3254b7db5fbfbf11a824627a6c31b932b4
Patch
git.kernel.org / stable/c/cb78d1b5efffe4cf97e16766329dd7358aed3deb
Patch
git.kernel.org / stable/c/e3a232e5767051483ffad4cef7d0a89d292a192b
Patch