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Linux Kernel dm-bufio Atomic Context Scheduling Vulnerability

Vulnerability

A vulnerability in the Linux kernel's dm-bufio component allows for improper scheduling in atomic context, which can lead to system instability. This issue was identified when CONFIG_DEBUG_ATOMIC_SLEEP and try_verify_in_tasklet are enabled. The vulnerability causes a kernel BUG by allowing a sleeping function to be called from an invalid context, disrupting normal operations.

Impact

Exploitation of this vulnerability causes a kernel BUG, leading to a system crash or instability.

Added: Jun 9, 2025, 7:46 PM
Updated: Jun 9, 2025, 7:46 PM

Vulnerability Rating

Custom Algorithm
spread
9.0
impact
2.5
exploitability
3.5
remediation
0.0
relevance
0.0
threat
3.2
urgency
2.9
incentive
1.7

Our algorithm analyzes dozens of metrics to generate these 8 key vulnerability categories, which are then combined to calculate the overall risk score.