CVE-2025-40259: Linux

EPSS: 0.2% chance of exploitation in the next 30 days.

In the Linux kernel, the following vulnerability has been resolved: scsi: sg: Do not sleep in atomic context sg_finish_rem_req() calls blk_rq_unmap_user(). The latter function may sleep. Hence, call sg_finish_rem_req() with interrupts enabled instead of disabled.

Affected products

• Linux Linux: from 3.16.85, before 3.17 (fixed in 3.17); from 3.18.101, before 3.19 (fixed in 3.19); from 4.1.52, before 4.2 (fixed in 4.2); from 4.4.123, before 4.5 (fixed in 4.5); from 4.9.89, before 4.10 (fixed in 4.10); from 4.12, before 5.4.302 (fixed in 5.4.302); …

Published 2025-12-04. Last modified 2026-06-17.