{"id":"DEBIAN-CVE-2025-21874","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: dm_integrity_status+0x2f8/0xab0 [dm_integrity]  ...","modified":"2026-08-27T23:05:19.987066092Z","published":"2025-03-27T15:15:55.203Z","upstream":["CVE-2025-21874"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2025-21874"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:13","purl":"pkg:deb/debian/linux?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.12.19-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2025-21874.json"}},{"package":{"name":"linux","ecosystem":"Debian:14","purl":"pkg:deb/debian/linux?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.12.19-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2025-21874.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}