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CVE-2022-50697

10
FAUCET Score

CVE-2022-50697 is a use-after-free vulnerability in the Linux kernel's Multiple Registration Protocol (MRP) implementation. It occurs due to a race condition where a timer can be restarted after its cancellation, leading to memory corruption. This vulnerability affects the Linux kernel, specifically within the net/802/mrp.c module. The vulnerability has a low FAUCET Risk Score of 7/100, indicating a relatively low severity. The attack vector involves a timing issue within the kernel, making exploitation complex. The potential impact is a system crash (denial of service) as demonstrated by the KASAN report, but could potentially lead to more severe outcomes depending on the specific memory corruption. 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 are minimal, suggesting a lack of widespread attention or exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
LinuxLinux
3.9CNA affecteddefault affected
LinuxLinux
>= febf018d22347b5df94066bca05d0c11a84e839d, < 1a185fe83c2a60c1e3596fb9d82dbeb148dc09c6, >= febf018d22347b5df94066bca05d0c11a84e839d, < 563e45fd5046045cc194af3ba17f5423e1c98170, >= febf018d22347b5df94066bca05d0c11a84e839d, < 5d5a481a7fd0234f617535dc464ea010804a1129, >= febf018d22347b5df94066bca05d0c11a84e839d, < 755eb0879224ffc2a43de724554aeaf0e51e5a64, >= febf018d22347b5df94066bca05d0c11a84e839d, < 78d48bc41f7726113c9f114268d3ab11212814da, >= febf018d22347b5df94066bca05d0c11a84e839d, < 98f53e591940e4c3818be358c5dc684d5b30cb56, >= febf018d22347b5df94066bca05d0c11a84e839d, < aacffc1a8dbf67c5463cb4f67b37143c01ca6fa9, >= febf018d22347b5df94066bca05d0c11a84e839d, < aadb1507a77b060c529edfeaf67f803e31461f24, >= febf018d22347b5df94066bca05d0c11a84e839d, < ab0377803dafc58f1e22296708c1c28e309414d6CNA affecteddefault unaffected

CVSS Data

CVSS data has not been published for this CVE.

Exploit Intelligence

EPSS Score
0.20%
Probability of exploitation in next 30 days
EPSS Percentile
10.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15

Social Chatter

No social media mentions found for this CVE.

Media 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-2022-50697Low

kernel: mrp: introduce active flags to prevent UAF when applicant uninit

Dec 24, 2025

References

git.kernel.org / stable/c/1a185fe83c2a60c1e3596fb9d82dbeb148dc09c6
git.kernel.org / stable/c/563e45fd5046045cc194af3ba17f5423e1c98170
git.kernel.org / stable/c/5d5a481a7fd0234f617535dc464ea010804a1129
git.kernel.org / stable/c/755eb0879224ffc2a43de724554aeaf0e51e5a64
git.kernel.org / stable/c/78d48bc41f7726113c9f114268d3ab11212814da
git.kernel.org / stable/c/98f53e591940e4c3818be358c5dc684d5b30cb56
git.kernel.org / stable/c/aacffc1a8dbf67c5463cb4f67b37143c01ca6fa9
git.kernel.org / stable/c/aadb1507a77b060c529edfeaf67f803e31461f24
git.kernel.org / stable/c/ab0377803dafc58f1e22296708c1c28e309414d6