CVE-2025-21874
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2025-21874
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-21874.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2025-21874
- Downstream
- Related
- Published
- 2025-03-27T15:15:55Z
- Modified
- 2025-03-27T20:00:22Z
- Summary
- [none]
- Details
-
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: dmintegritystatus+0x2f8/0xab0 [dm_integrity] ...
- References
Affected packages
Debian:13 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source