CVE-2026-43066

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Source
https://cve.org/CVERecord?id=CVE-2026-43066
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-43066.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-43066
Downstream
Related
Published
2026-05-05T15:23:25.984Z
Modified
2026-07-15T01:49:11.739408007Z
Summary
ext4: fix iloc.bh leak in ext4_fc_replay_inode() error paths
Details

In the Linux kernel, the following vulnerability has been resolved:

ext4: fix iloc.bh leak in ext4fcreplay_inode() error paths

During code review, Joseph found that ext4fcreplayinode() calls ext4getfcinode_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:

  • ext4handledirty_metadata() failure
  • syncdirtybuffer() failure
  • ext4markinode_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 ext4fcreplay_inode() propagate errors properly instead of always returning 0.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43066.json",
    "cna_assigner": "Linux"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
8016e29f4362e285f0f7e38fadc61a5b7bdfdfa2
Fixed
0892f12cd49fde5d5db68137923db107f894f3a3
Fixed
5a63033696e60b5d70816f1d119645ac5b0b0a03
Fixed
9c90449a9ac2cd1ba540ad2561b8b70c1bfb0a25
Fixed
ca99cbcc316cdfd2040cc2b13d1426ccb3b3b50b
Fixed
19782b4c793b49a6aa4abbb307ddff3610009d21
Fixed
f7817ad399d604e8639005d87d148b5ec626ad26
Fixed
c426231e3d51916e83b6d1ab7ed8a65e83bca5b4
Fixed
ec0a7500d8eace5b4f305fa0c594dd148f0e8d29

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-43066.json"

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
5.10.0
Fixed
5.10.253
Type
ECOSYSTEM
Events
Introduced
5.11.0
Fixed
5.15.203
Type
ECOSYSTEM
Events
Introduced
5.16.0
Fixed
6.1.168
Type
ECOSYSTEM
Events
Introduced
6.2.0
Fixed
6.6.131
Type
ECOSYSTEM
Events
Introduced
6.7.0
Fixed
6.12.80
Type
ECOSYSTEM
Events
Introduced
6.13.0
Fixed
6.18.21
Type
ECOSYSTEM
Events
Introduced
6.19.0
Fixed
6.19.11

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-43066.json"