CVE-2026-43066

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2026-43066
In the Linux kernel, the following vulnerability has been resolved: ext4: fix iloc.bh leak in ext4_fc_replay_inode() error paths During code review, Joseph found that ext4_fc_replay_inode() calls ext4_get_fc_inode_loc() to get the inode location, which holds a reference to iloc.bh that must be released via brelse(). However, several error paths jump to the 'out' label without releasing iloc.bh: - ext4_handle_dirty_metadata() failure - sync_dirty_buffer() failure - ext4_mark_inode_used() failure - ext4_iget() failure Fix this by introducing an 'out_brelse' label placed just before the existing 'out' label to ensure iloc.bh is always released. Additionally, make ext4_fc_replay_inode() propagate errors properly instead of always returning 0.

5.5 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://git.kernel.org/stable/c/0892f12cd49fde5d5db68137923db107f894f3a3 Patch
https://git.kernel.org/stable/c/19782b4c793b49a6aa4abbb307ddff3610009d21 Patch
https://git.kernel.org/stable/c/5a63033696e60b5d70816f1d119645ac5b0b0a03 Patch
https://git.kernel.org/stable/c/9c90449a9ac2cd1ba540ad2561b8b70c1bfb0a25 Patch
https://git.kernel.org/stable/c/c426231e3d51916e83b6d1ab7ed8a65e83bca5b4 Patch
https://git.kernel.org/stable/c/ca99cbcc316cdfd2040cc2b13d1426ccb3b3b50b Patch
https://git.kernel.org/stable/c/ec0a7500d8eace5b4f305fa0c594dd148f0e8d29 Patch
https://git.kernel.org/stable/c/f7817ad399d604e8639005d87d148b5ec626ad26 Patch
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:*
History

29 May 2026, 17:53

Type Values Removed Values Added
References () https://git.kernel.org/stable/c/0892f12cd49fde5d5db68137923db107f894f3a3 - () https://git.kernel.org/stable/c/0892f12cd49fde5d5db68137923db107f894f3a3 - Patch
References () https://git.kernel.org/stable/c/19782b4c793b49a6aa4abbb307ddff3610009d21 - () https://git.kernel.org/stable/c/19782b4c793b49a6aa4abbb307ddff3610009d21 - Patch
References () https://git.kernel.org/stable/c/5a63033696e60b5d70816f1d119645ac5b0b0a03 - () https://git.kernel.org/stable/c/5a63033696e60b5d70816f1d119645ac5b0b0a03 - Patch
References () https://git.kernel.org/stable/c/9c90449a9ac2cd1ba540ad2561b8b70c1bfb0a25 - () https://git.kernel.org/stable/c/9c90449a9ac2cd1ba540ad2561b8b70c1bfb0a25 - Patch
References () https://git.kernel.org/stable/c/c426231e3d51916e83b6d1ab7ed8a65e83bca5b4 - () https://git.kernel.org/stable/c/c426231e3d51916e83b6d1ab7ed8a65e83bca5b4 - Patch
References () https://git.kernel.org/stable/c/ca99cbcc316cdfd2040cc2b13d1426ccb3b3b50b - () https://git.kernel.org/stable/c/ca99cbcc316cdfd2040cc2b13d1426ccb3b3b50b - Patch
References () https://git.kernel.org/stable/c/ec0a7500d8eace5b4f305fa0c594dd148f0e8d29 - () https://git.kernel.org/stable/c/ec0a7500d8eace5b4f305fa0c594dd148f0e8d29 - Patch
References () https://git.kernel.org/stable/c/f7817ad399d604e8639005d87d148b5ec626ad26 - () https://git.kernel.org/stable/c/f7817ad399d604e8639005d87d148b5ec626ad26 - Patch
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
CPE cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:*
CWE CWE-401
First Time Linux
Linux linux Kernel

05 May 2026, 16:16

Type Values Removed Values Added
New CVE
Information

Published : 2026-05-05 16:16

Updated : 2026-05-29 17:53

NVD link : CVE-2026-43066

Mitre link : CVE-2026-43066

CVE.ORG link : CVE-2026-43066

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-401

Missing Release of Memory after Effective Lifetime