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.
CVSS
No CVSS.
References
Configurations
Configuration 1 (hide)
|
History
01 Apr 2025, 15:40
| Type | Values Removed | Values Added |
|---|---|---|
| First Time |
Linux linux Kernel
Linux |
|
| CPE | cpe:2.3:o:linux:linux_kernel:6.2:rc1:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.2:rc2:*:*:*:*:*:* |
|
| References | () https://git.kernel.org/stable/c/18bd1c9c02e64a3567f90c83c2c8b855531c8098 - Patch | |
| References | () https://git.kernel.org/stable/c/fdb4a70bb768d2a87890409597529ad81cb3de8a - Patch | |
| References | () https://git.kernel.org/stable/c/853ffa1511b058c79a4c9bb1407b3b20ce311792 - Patch | |
| References | () https://git.kernel.org/stable/c/39f501d68ec1ed5cd5c66ac6ec2a7131c517bb92 - Patch |
27 Mar 2025, 17:15
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2025-03-27 17:15
Updated : 2025-04-01 15:40
NVD link : CVE-2022-49761
Mitre link : CVE-2022-49761
JSON object : View
Products Affected
linux
- linux_kernel
CWE
No CWE.