Bug 2426130 (CVE-2022-50811)

Summary: CVE-2022-50811 kernel: erofs: fix missing unmap if z_erofs_get_extent_compressedlen() fails
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Version: unspecifiedKeywords: Security
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OS: Linux   
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A resource leak flaw was found in the Linux kernel's EROFS filesystem. When z_erofs_get_extent_compressedlen() fails, the corresponding meta buffer is not properly unmapped, leading to a memory leak over time.
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Description OSIDB Bzimport 2025-12-30 13:11:08 UTC 
In the Linux kernel, the following vulnerability has been resolved:

erofs: fix missing unmap if z_erofs_get_extent_compressedlen() fails

Otherwise, meta buffers could be leaked.
Comment 1 Alexander B 2025-12-31 07:00:50 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025123013-CVE-2022-50811-66f4@gregkh/T