Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: ocfs2: fix null-ptr-deref when journal load failed. During the mounting process, if journal_reset() fails because of too short journal, then lead to jbd2_journal_load() fails with NULL j_sb_buffer. Subsequently, ocfs2_journal_shutdown() calls jbd2_journal_flush()->jbd2_cleanup_journal_tail()-> __jbd2_update_log_tail()->jbd2_journal_update_sb_log_tail() ->lock_buffer(journal->j_sb_buffer), resulting in a null-pointer dereference error. To resolve this issue, we should check the JBD2_LOADED flag to ensure the journal was properly loaded. Additionally, use journal instead of osb->journal directly to simplify the code.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected f6f50e28f0cb8d7bcdfaacc83129f005dede11b1 before fd89d92c1140cee8f59de336cb37fa65e359c123; affected f6f50e28f0cb8d7bcdfaacc83129f005dede11b1 before 703b2c7e0798d263154dc8593dc2345f75dc077f; affected f6f50e28f0cb8d7bcdfaacc83129f005dede11b1 before bf605ae98dab5c15c5b631d4d7f88898cb41b649; affected f6f50e28f0cb8d7bcdfaacc83129f005dede11b1 before ff55291fb36779819211b596da703389135f5b05; affected f6f50e28f0cb8d7bcdfaacc83129f005dede11b1 before 82dfdd1e31e774578f76ce6dc90c834f96403a0f; affected f6f50e28f0cb8d7bcdfaacc83129f005dede11b1 before 86a89e75e9e4dfa768b97db466ad6bedf2e7ea5b; affected f6f50e28f0cb8d7bcdfaacc83129f005dede11b1 before f60e94a83db799bde625ac8671a5b4a6354e7120; affected f6f50e28f0cb8d7bcdfaacc83129f005dede11b1 before 387bf565cc03e2e8c720b8b4798efea4aacb6962; affected f6f50e28f0cb8d7bcdfaacc83129f005dede11b1 before 5784d9fcfd43bd853654bb80c87ef293b9e8e80a |
| Linux / Linux | affected 2.6.32; unaffected 0 before 2.6.32; unaffected 4.19.323 through 4.19.*; unaffected 5.4.285 through 5.4.*; unaffected 5.10.227 through 5.10.*; unaffected 5.15.168 through 5.15.*; unaffected 6.1.113 through 6.1.*; unaffected 6.6.55 through 6.6.*; unaffected 6.10.14 through 6.10.*; unaffected 6.11.3 through 6.11.*; unaffected 6.12 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/fd89d92c1140cee8f59de336cb37fa65e359c123
- https://git.kernel.org/stable/c/703b2c7e0798d263154dc8593dc2345f75dc077f
- https://git.kernel.org/stable/c/bf605ae98dab5c15c5b631d4d7f88898cb41b649
- https://git.kernel.org/stable/c/ff55291fb36779819211b596da703389135f5b05
- https://git.kernel.org/stable/c/82dfdd1e31e774578f76ce6dc90c834f96403a0f
- https://git.kernel.org/stable/c/86a89e75e9e4dfa768b97db466ad6bedf2e7ea5b
- https://git.kernel.org/stable/c/f60e94a83db799bde625ac8671a5b4a6354e7120
- https://git.kernel.org/stable/c/387bf565cc03e2e8c720b8b4798efea4aacb6962
- https://git.kernel.org/stable/c/5784d9fcfd43bd853654bb80c87ef293b9e8e80a
ADP enrichment
No English description supplied.
No references supplied.
No English description supplied.