What’s Vulnerable › Vulnerabilities

CVE-2026-64060: netfs: Fix leak of request in netfs_write_begin() error handling

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-07-19 · updated 2026-10-21
• Weakness: CWE-401

Description

In the Linux kernel, the following vulnerability has been resolved: netfs: Fix leak of request in netfs_write_begin() error handling Fix netfs_write_begin() to not leak our ref on the request in the event that we get an error from netfs_wait_for_read().

Affected products

• Linux kernel: from 5.18 before 6.18.34; from 6.19 before 7.0.11; 7.1-rc1, 7.1-rc2, 7.1-rc3, 7.1-rc4 — fixed in 6.18.34, 7.0.11

How to fix

Upgrade to a fixed version: Linux kernel 6.18.34, 7.0.11. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/22ae28aae43623be235ff455558cdd13fbe2daeb
• https://git.kernel.org/stable/c/28686d6d8b60dc5bbae9ef6023ab2051d6c66cdf
• https://git.kernel.org/stable/c/5046a34f0643441f05b0253ea64e1a3af87efe14
• https://git.kernel.org/stable/c/9192f304379187b396d56d6a1a406712c6bfa5a3

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