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CVE-2022-50434

18
FAUCET Score

CVE-2022-50434 is a memory leak vulnerability in the Linux kernel's block multi-queue (blk-mq) subsystem, specifically affecting the blk-mq: fix possible memleak when register 'hctx' failed function. This flaw occurs when registering a hardware context (hctx) fails partway through, leading to unreferenced memory objects. Rated Medium severity with a CVSS score of 5.5, an attacker with local privileges can trigger a denial-of-service condition by exhausting system memory. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
>= 3.16, < 4.9.337CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 4.10, < 4.14.303CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 4.15, < 4.19.270CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 4.20, < 5.4.229CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.5, < 5.10.163CPE 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
0.17%
Probability of exploitation in next 30 days
EPSS Percentile
6.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0017 is in the 36th percentile among its peer group of 15,940 CVEs.

Social Chatter

No social media mentions found for this CVE.

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 (6)

redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: kernel
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: kernel-rt
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: kernel
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: kernel-rt
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: kernel
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: kernel-rt

Vendor Advisories (1)

redhatCVE-2022-50434Low

kernel: blk-mq: fix possible memleak when register 'hctx' failed

Oct 1, 2025

References

git.kernel.org / stable/c/02bc8bc6eab03c84373281b85cb6e98747172ff7
Patch
git.kernel.org / stable/c/33e8a3f61814ea30615d0fafaf50477975d6c1ca
Patch
git.kernel.org / stable/c/4b7a21c57b14fbcd0e1729150189e5933f5088e9
Patch
git.kernel.org / stable/c/4b7fafa5f39b15c3a6ca3b95e534d05d6904cc95
Patch
git.kernel.org / stable/c/654870789c3c1b9763316ef1c71d7a449127b175
Patch
git.kernel.org / stable/c/87fd18016a47ea8ae12641377a390172c4aa97a7
Patch
git.kernel.org / stable/c/cb186eb47fb9dd327bdefa15f0c5fc55c53a40dd
Patch
git.kernel.org / stable/c/e8022da1fa2fdf2fa204b445dd3354e7a66d085a
Patch
git.kernel.org / stable/c/eff45bfbc25a2509a6362dea6e699e14083c693c
Patch