Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected ff780b91efe901b8eecd8114785abae5341820ad before 7a33dde572fceb45d02d188e0213c47059401c93; affected ff780b91efe901b8eecd8114785abae5341820ad before e7385c868ee038d6a0cb0e85c22d2741e7910fd5; affected ff780b91efe901b8eecd8114785abae5341820ad before 68ed9c76b2affd47177b92495446abb7262d0ef7; affected ff780b91efe901b8eecd8114785abae5341820ad before 9b073d73725366d886b711b74e058c02f51e7a0e; affected ff780b91efe901b8eecd8114785abae5341820ad before e0d5fc7a6d80ac2406c7dfc6bb625201d0250a8a |
| Linux / Linux | affected 5.10; unaffected 0 before 5.10; unaffected 5.10.150 through 5.10.*; unaffected 5.15.75 through 5.15.*; unaffected 5.19.17 through 5.19.*; unaffected 6.0.3 through 6.0.*; unaffected 6.1 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/7a33dde572fceb45d02d188e0213c47059401c93
- https://git.kernel.org/stable/c/e7385c868ee038d6a0cb0e85c22d2741e7910fd5
- https://git.kernel.org/stable/c/68ed9c76b2affd47177b92495446abb7262d0ef7
- https://git.kernel.org/stable/c/9b073d73725366d886b711b74e058c02f51e7a0e
- https://git.kernel.org/stable/c/e0d5fc7a6d80ac2406c7dfc6bb625201d0250a8a