CVE-2022-50577
In the Linux kernel, the following vulnerability has been resolved: ima: Fix memory leak in __ima_inode_hash() Commit f3cc6b25dcc5 ("ima: always measure and audit files in policy") lets measurement or audit happen even if the file digest cannot be calculated. As a result, iint->ima_hash could have been allocated despite ima_collect_measurement() returning an error. Since ima_hash belongs to a temporary inode metadata structure, declared at the beginning of __ima_inode_hash(), just add a kfree() call if ima_collect_measurement() returns an error different from -ENOMEM (in that case, ima_hash should not have been allocated).
Affected versions
Linux kernel versions
5.18
and later are affected. Fixed in
6.0.18,
6.1.4,
6.2
and their respective stable series.
References
The following references provide additional information about CVE-2022-50577 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/8c1d6a050a0f16e0a9d32eaf53b965c77279c6f8
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PatchKernel patch commithttps://git.kernel.org/stable/c/c4df8cb38f139ed9f4296868c0a6f15a26e8c491
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PatchKernel patch commithttps://git.kernel.org/stable/c/f375bcf69f58fd0744c9dfd1b6b891a27301d67b
Frequently asked questions
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What is CVE-2022-50577?
CVE-2022-50577 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 5.18 onward and has been patched in 6.0.18, 6.1.4 and 6.2. CVE-2022-50577 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2022-50577?
Yes — CVE-2022-50577 has been patched. Fixed versions include 6.0.18, 6.1.4 and 6.2. If you are running Linux kernel 5.18 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2022-50577 actively exploited?
No — CVE-2022-50577 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.