CVE-2025-40259

CVE-2025-40259 is a security vulnerability that is still awaiting full analysis and scoring. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Description

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.

Frequently asked questions

What is CVE-2025-40259?
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.
Is CVE-2025-40259 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2025-40259?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-40259 have an EU (EUVD) identifier?
Yes. CVE-2025-40259 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-201198.
When was CVE-2025-40259 published?
CVE-2025-40259 was published on 2025-12-04 and last updated on 2026-06-17.

References