CVE Database
/

CVE-2022-49761

Back to search

CVE-2022-49761

Published: Mar 27, 2025

Modified: May 11, 2026

PUBLISHED

Description

In the Linux kernel, the following vulnerability has been resolved: btrfs: always report error in run_one_delayed_ref() Currently we have a btrfs_debug() for run_one_delayed_ref() failure, but if end users hit such problem, there will be no chance that btrfs_debug() is enabled. This can lead to very little useful info for debugging. This patch will: - Add extra info for error reporting Including: * logical bytenr * num_bytes * type * action * ref_mod - Replace the btrfs_debug() with btrfs_err() - Move the error reporting into run_one_delayed_ref() This is to avoid use-after-free, the @node can be freed in the caller. This error should only be triggered at most once. As if run_one_delayed_ref() failed, we trigger the error message, then causing the call chain to error out: btrfs_run_delayed_refs() `- btrfs_run_delayed_refs() `- btrfs_run_delayed_refs_for_head() `- run_one_delayed_ref() And we will abort the current transaction in btrfs_run_delayed_refs(). If we have to run delayed refs for the abort transaction, run_one_delayed_ref() will just cleanup the refs and do nothing, thus no new error messages would be output.

VendorProductVersions

Linux

Linux

affected
79787eaab46121d4713ed03c8fc63b9ec3eaec76 - < 18bd1c9c02e64a3567f90c83c2c8b855531c8098
affected
79787eaab46121d4713ed03c8fc63b9ec3eaec76 - < fdb4a70bb768d2a87890409597529ad81cb3de8a
affected
79787eaab46121d4713ed03c8fc63b9ec3eaec76 - < 853ffa1511b058c79a4c9bb1407b3b20ce311792
affected
79787eaab46121d4713ed03c8fc63b9ec3eaec76 - < 39f501d68ec1ed5cd5c66ac6ec2a7131c517bb92

Linux

Linux

affected
3.4
unaffected
0 - < 3.4
unaffected
5.10.165 - <= 5.10.*
unaffected
5.15.90 - <= 5.15.*
unaffected
6.1.8 - <= 6.1.*

+1 more versions

Security Training

Train your team to recognize and prevent security threats with our comprehensive security awareness program.

Start Training

Vulnerability Scanning

Discover vulnerabilities in your applications and infrastructure before attackers do.

Scan Now