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CVE-2023-53345

18
FAUCET Score

CVE-2023-53345 is a data race vulnerability in the Linux kernel's rxrpc network protocol. Specifically, it occurs in the rxrpc_wait_to_be_connected() function, where a race condition can arise when checking call->error without first confirming the call's completion state. This flaw affects Linux kernel versions and could lead to system instability or denial of service. The vulnerability has a CVSS score of 4.7 (Medium), indicating a local attack vector with high attack complexity, requiring low privileges, and resulting in a high impact on availability. There is no impact on confidentiality or integrity. Currently, there is no evidence of active exploitation, and no public exploit code is available on platforms like Metasploit, Nuclei, or ExploitDB. Community discussion and media coverage for this CVE are minimal, suggesting low public awareness and attention.

Impacted Technologies

VendorProductVersion(s)CPE
>= 6.2.1, < 6.2.16CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 6.3, < 6.3.3CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
6.2CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:6.2:-:*:*:*:*:*:*
6.2CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:6.2:rc4:*:*:*:*:*:*
6.2CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:6.2:rc5:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

4.7MEDIUM

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.0
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.13%
Probability of exploitation in next 30 days
EPSS Percentile
2.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0013 is in the 23rd percentile among its peer group of 1,297 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 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 0.4 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (2)

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

Vendor Advisories (1)

redhatCVE-2023-53345Moderate

kernel: rxrpc: Fix potential data race in rxrpc_wait_to_be_connected()

Sep 17, 2025

References

git.kernel.org / stable/c/2b5fdc0f5caa505afe34d608e2eefadadf2ee67a
Patch
git.kernel.org / stable/c/3e8ba61a3fe4475a9b5c9fbfc664435c6795d872
Patch
git.kernel.org / stable/c/454e48a9ff04c5fa1631bb172070fcb6389b97f9
Patch