Bug 2363371 (CVE-2022-49831)

Summary: CVE-2022-49831 kernel: btrfs: zoned: initialize device's zone info for seeding
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
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Priority: medium    
Version: unspecifiedCC: dfreiber, drow, jburrell, vkumar
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Hardware: All   
OS: Linux   
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Description OSIDB Bzimport 2025-05-01 15:01:51 UTC 
In the Linux kernel, the following vulnerability has been resolved:

btrfs: zoned: initialize device's zone info for seeding

When performing seeding on a zoned filesystem it is necessary to
initialize each zoned device's btrfs_zoned_device_info structure,
otherwise mounting the filesystem will cause a NULL pointer dereference.

This was uncovered by fstests' testcase btrfs/163.
Comment 1 Avinash Hanwate 2025-05-02 05:46:30 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025050137-CVE-2022-49831-751b@gregkh/T