What’s Vulnerable › Vulnerabilities

CVE-2026-74330: configfs: fix lockless traversals of ->s_children

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-15 · updated 2026-10-16

Description

In the Linux kernel, the following vulnerability has been resolved: configfs: fix lockless traversals of ->s_children Having the parent directory locked protects entries from removal by another thread, but it does *not* protect cursors from being moved around by lseek() - or freed, for that matter.

Affected products

• Linux kernel: 2.6.27 — fixed in 7.2

How to fix

Upgrade to a fixed version: Linux kernel 7.2. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/459860529c109c5ce08b81c0776ca1200eaaeb4a
• https://git.kernel.org/stable/c/637ef4961470e04455102b34ac484a34d8eca0a4
• https://git.kernel.org/stable/c/77fd6f50f633a52c2db061e7d71d8cb486b0265e
• https://git.kernel.org/stable/c/91f289728ec706b7ff1ca0ee845dd73ff2253488
• https://git.kernel.org/stable/c/9b9e8bb81c41fd27e7b57a1c936fde140548535f
• https://git.kernel.org/stable/c/9e57e2863872e82e7c7237bc32299f67ebebc543
• https://git.kernel.org/stable/c/b166ab78dc3f48e83d2c80bdfde4159b31fdc5fb
• https://git.kernel.org/stable/c/e6d93108e0a27d7e6f95c7e45017d14ba2900d32

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