PT-2022-7631 · Linux+3 · Linux Kernel+3
Dāvis Mosāns
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Published
2022-02-15
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Updated
2025-02-12
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CVE-2022-48923
CVSS v3.1
5.5
Medium
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel versions prior to 5.17.0-rc2-1 #12
Description
The vulnerability is related to the btrfs component of the Linux kernel, where a compressed length can be corrupted to be larger than the allocated memory buffer. This can cause a memcpy in copy compressed segment to write outside of allocated memory, resulting in a stuck read syscall or a general protection fault when using btrfs send. The issue is caused by the function
lzo decompress bio and can lead to a denial of service.Recommendations
To resolve the issue, update the Linux kernel to a version that includes the fix for the btrfs vulnerability. Specifically, update to a version later than 5.17.0-rc2-1 #12. As a temporary workaround, consider disabling the
btrfs component until a patch is available.Exploit
Fix
Memory Corruption
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Weakness Enumeration
Related Identifiers
Affected Products
Debian
Linux Kernel
Red Os
Suse