Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: dm-integrity: Avoid divide by zero in table status in Inline mode In Inline mode, the journal is unused, and journal_sectors is zero. Calculating the journal watermark requires dividing by journal_sectors, which should be done only if the journal is configured. Otherwise, a simple table query (dmsetup table) can cause OOPS. This bug did not show on some systems, perhaps only due to compiler optimization. On my 32-bit testing machine, this reliably crashes with the following: : Oops: divide error: 0000 [#1] PREEMPT SMP : CPU: 0 UID: 0 PID: 2450 Comm: dmsetup Not tainted 6.14.0-rc2+ #959 : EIP: dm_integrity_status+0x2f8/0xab0 [dm_integrity] ...
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected fb0987682c629c1d2c476f35f6fde405a5e304a4 before 22c6f577b3cb184857b440ae5e5916f6c9e7021d; affected fb0987682c629c1d2c476f35f6fde405a5e304a4 before 06d9895f265282e939a8933bb18de82eba2b4dda; affected fb0987682c629c1d2c476f35f6fde405a5e304a4 before 7fb39882b20c98a9a393c244c86b56ef6933cff8 |
| Linux / Linux | affected 6.11; unaffected 0 before 6.11; unaffected 6.12.18 through 6.12.*; unaffected 6.13.6 through 6.13.*; unaffected 6.14 through * |
CWE
No CWE identifiers supplied.