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Medium severity5.5NVD Advisory· Published Feb 27, 2025· Updated Jul 18, 2026

CVE-2025-21817

CVE-2025-21817

Description

In the Linux kernel, the following vulnerability has been resolved:

block: mark GFP_NOIO around sysfs ->store()

sysfs ->store is called with queue freezed, meantime we have several ->store() callbacks(update_nr_requests, wbt, scheduler) to allocate memory with GFP_KERNEL which may run into direct reclaim code path, then potential deadlock can be caused.

Fix the issue by marking NOIO around sysfs ->store()

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

4
  • Linux/Kernel3 versions
    cpe:2.3:o:linux:linux_kernel:6.13.2:*:*:*:*:*:*:*+ 2 more
    • cpe:2.3:o:linux:linux_kernel:6.13.2:*:*:*:*:*:*:*
    • (no CPE)
    • (no CPE)range: 6.13.2
  • osv-coords
    pkg:linux/kernel
    Range: >= 6.13.2, < 6.13.3

Patches

Vulnerability mechanics

References

2

News mentions

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