CVE-2026-43393

MEDIUM

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

Title source: cna

Description

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.

References (4)

Core 4

Core References

https://git.kernel.org/stable/c/0e4aaf5a3212b6a469c2489637c29a8e2a5062a5

https://git.kernel.org/stable/c/7bdf00ed75c477252578068dba19934cd825f20a

https://git.kernel.org/stable/c/4f90c5c2698383984102401b1724b0b67da832ab

https://git.kernel.org/stable/c/f15fb3d41543244d1179f423da4a4832a55bc050

Scores

CVSS v3 5.5

EPSS 0.0012

EPSS Percentile 2.3%

Attack Vector LOCAL

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Details

CWE

CWE-401

Status published

Products (15)

linux/Kernel 6.12.0 - 6.12.78linux

linux/Kernel 6.13.0 - 6.18.19linux

linux/Kernel 6.19.0 - 6.19.9linux

Linux/Linux < 6.12

Linux/Linux 0ae653fbec2b9fbc72c65a0c99528990bfb2136d - 0e4aaf5a3212b6a469c2489637c29a8e2a5062a5

Linux/Linux 0ae653fbec2b9fbc72c65a0c99528990bfb2136d - 4f90c5c2698383984102401b1724b0b67da832ab

Linux/Linux 0ae653fbec2b9fbc72c65a0c99528990bfb2136d - 7bdf00ed75c477252578068dba19934cd825f20a

Linux/Linux 0ae653fbec2b9fbc72c65a0c99528990bfb2136d - f15fb3d41543244d1179f423da4a4832a55bc050

Linux/Linux 6.12

Linux/Linux 6.12.78 - 6.12.*

... and 5 more

Published May 08, 2026

Tracked Since May 08, 2026