Bug 2468217 (CVE-2026-43393) - CVE-2026-43393 kernel: btrfs: fix chunk map leak in btrfs_map_block() after btrfs_chunk_map_num_copies()
Summary: CVE-2026-43393 kernel: btrfs: fix chunk map leak in btrfs_map_block() after b...
Keywords:
Status: NEW
Alias: CVE-2026-43393
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-05-08 15:05 UTC by OSIDB Bzimport
Modified: 2026-05-08 21:48 UTC (History)
2 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-05-08 15:05:19 UTC 
In the Linux kernel, the following vulnerability has been resolved:

btrfs: fix chunk map leak in btrfs_map_block() after btrfs_chunk_map_num_copies()

Fix a chunk map leak in btrfs_map_block(): if we return early with -EINVAL,
we're not freeing the chunk map that we've just looked up.
Comment 1 Keith Grant 2026-05-08 21:44:43 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026050837-CVE-2026-43393-8c6d@gregkh/T
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