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CVE-2022-49403

17
FAUCET Score

CVE-2022-49403 is a memory leak vulnerability in the Linux kernel's lib/string_helpers component, specifically affecting drivers that utilize devm_kasprintf_strarray(). The issue stems from the failure to add allocated string arrays to a device's resource list, preventing automatic release upon device removal. With a CVSS score of 5.5 (Medium), this vulnerability has a local attack vector with low complexity, potentially leading to a denial of service through resource exhaustion. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 5.17, < 5.17.14CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.18, < 5.18.3CPE 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
0.25%
Probability of exploitation in next 30 days
EPSS Percentile
16.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0025 is in the 70th 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 Patches (2)

redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: kernel
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: kernel-rt

Vendor Advisories (1)

redhatCVE-2022-49403Moderate

kernel: lib/string_helpers: fix not adding strarray to device's resource list

Feb 26, 2025

References

git.kernel.org / stable/c/a152eb42fcecfe41239c3c6695342f3a128593e7
Patch
git.kernel.org / stable/c/bf29edab0c9ff3d2633b8306a67d04c357e2a385
Patch
git.kernel.org / stable/c/cd290a9839cee2f6641558877e707bd373c8f6f1
Patch