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High severity7.8NVD Advisory· Published Sep 23, 2025· Updated Jul 30, 2026

CVE-2025-39872

CVE-2025-39872

Description

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

hsr: hold rcu and dev lock for hsr_get_port_ndev

hsr_get_port_ndev calls hsr_for_each_port, which need to hold rcu lock. On the other hand, before return the port device, we need to hold the device reference to avoid UaF in the caller function.

AI Insight

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

Affected products

9
  • Linux/Kernel8 versions
    cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*+ 7 more
    • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*range: >=6.14,<6.16.8
    • cpe:2.3:o:linux:linux_kernel:6.17:rc1:*:*:*:*:*:*
    • cpe:2.3:o:linux:linux_kernel:6.17:rc2:*:*:*:*:*:*
    • cpe:2.3:o:linux:linux_kernel:6.17:rc3:*:*:*:*:*:*
    • cpe:2.3:o:linux:linux_kernel:6.17:rc4:*:*:*:*:*:*
    • cpe:2.3:o:linux:linux_kernel:6.17:rc5:*:*:*:*:*:*
    • (no CPE)
    • (no CPE)range: 6.14
  • osv-coords
    pkg:linux/kernel
    Range: < 6.12.64

Patches

Vulnerability mechanics

References

3

News mentions

0

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