CVE-2022-49967
MediumIn the Linux kernel, the following vulnerability has been resolved: bpf: Fix a data-race around bpf_jit_limit. While reading bpf_jit_limit, it can be changed concurrently via sysctl, WRITE_ONCE() in __do_proc_doulongvec_minmax(). The size of bpf_jit_limit is long, so we need to add a paired READ_ONCE() to avoid load-tearing.
CVSS 3.1 score
4.7
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness type
CWE-362CVE-2022-49967 is a Race Condition vulnerability
What is Race Condition?
The product contains a code sequence that can run concurrently with other code, creating unexpected states. Learn more on MITRE CWE
Affected versions
Linux kernel versions
4.9.190,
4.14.140,
4.19.47,
4.20
and later are affected. Fixed in
5.19.8,
6.0
and their respective stable series.
References
The following references provide additional information about CVE-2022-49967 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.
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PatchKernel patch commithttps://git.kernel.org/stable/c/0947ae1121083d363d522ff7518ee72b55bd8d29
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PatchKernel patch commithttps://git.kernel.org/stable/c/ba632ad0bacb13197a8f38e7526448974e87f292
Frequently asked questions
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What is CVE-2022-49967?
CVE-2022-49967 is a Medium severity Linux kernel vulnerability with a CVSS score of 4.7 out of 10 , classified as a Race Condition flaw (CWE-362) . It affects Linux kernel versions from 4.9.190 onward and has been patched in 5.19.8 and 6.0. CVE-2022-49967 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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What is the CVSS score for CVE-2022-49967?
CVE-2022-49967 has a CVSS score of 4.7 out of 10, rated Medium severity (CVSS 3.1). The vector string is
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H. -
Is there a patch available for CVE-2022-49967?
Yes — CVE-2022-49967 has been patched. Fixed versions include 5.19.8 and 6.0. If you are running Linux kernel 4.9.190 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2022-49967 actively exploited?
No — CVE-2022-49967 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.
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What is Race Condition (CWE-362)?
The product contains a code sequence that can run concurrently with other code, creating unexpected states. View CWE-362 on MITRE CWE →