Description
In the Linux kernel, the following vulnerability has been resolved:
jbd2: fix potential buffer head reference count leak
As in 'jbd2_fc_wait_bufs' if buffer isn't uptodate, will return -EIO without update 'journal->j_fc_off'. But 'jbd2_fc_release_bufs' will release buffer head from ‘j_fc_off - 1’ if 'bh' is NULL will terminal release which will lead to buffer head buffer head reference count leak. To solve above issue, update 'journal->j_fc_off' before return -EIO.
Metrics
No CVSS score has been published yet.
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= ff780b91efe901b8eecd8114785abae5341820ad, < 7a33dde572fceb45d02d188e0213c47059401c93; >= ff780b91efe901b8eecd8114785abae5341820ad, < e7385c868ee038d6a0cb0e85c22d2741e7910fd5; >= ff780b91efe901b8eecd8114785abae5341820ad, < 68ed9c76b2affd47177b92495446abb7262d0ef7; >= ff780b91efe901b8eecd8114785abae5341820ad, < 9b073d73725366d886b711b74e058c02f51e7a0e; >= ff780b91efe901b8eecd8114785abae5341820ad, < e0d5fc7a6d80ac2406c7dfc6bb625201d0250a8a |
| Linux | Linux | 5.10 |
References
- https://git.kernel.org/stable/c/68ed9c76b2affd47177b92495446abb7262d0ef7
- https://git.kernel.org/stable/c/7a33dde572fceb45d02d188e0213c47059401c93
- https://git.kernel.org/stable/c/9b073d73725366d886b711b74e058c02f51e7a0e
- https://git.kernel.org/stable/c/e0d5fc7a6d80ac2406c7dfc6bb625201d0250a8a
- https://git.kernel.org/stable/c/e7385c868ee038d6a0cb0e85c22d2741e7910fd5
Timeline
- Published
- Dec 30, 2025
- Last modified
- Jun 17, 2026
- NVD status
- Deferred