VulnerabilityPublished 19 Jul 2026Updated 21 Oct 2026

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

Affects Linux kernelSource CVE Database V5

Not known to be exploited · fixed in 28686d6d8b60dc5bbae9ef6023ab2051d6c66cdf : update Linux kernel when convenient.

Data as of 26 Oct 2026, 13:47 UTC

Severity

Unrated

Rated by Threat Radar · No CVSS score from NVD or the CNA

EPSS: 0.1% chance of exploitation in 30 days – higher than 5% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in 28686d6d8b60dc5bbae9ef6023ab2051d6c66cdf, 9192f304379187b396d56d6a1a406712c6bfa5a3, 5046a34f0643441f05b0253ea64e1a3af87efe14 +1

Exploitation evidence

Disclosed: evidence found.
CVE published 19 Jul 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade Linux kernel to 28686d6d8b60dc5bbae9ef6023ab2051d6c66cdf, 9192f304379187b396d56d6a1a406712c6bfa5a3, 5046a34f0643441f05b0253ea64e1a3af87efe14 or 22ae28aae43623be235ff455558cdd13fbe2daeb.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ 4090b31422a6f24dfe701e31ffec7ba5804a7e2f, < 28686d6d8b60dc5bbae9ef6023ab2051d6c66cdf	Fixed in 28686d6d8b60dc5bbae9ef6023ab2051d6c66cdf
LinuxLinux	Affected ≥ 4090b31422a6f24dfe701e31ffec7ba5804a7e2f, < 9192f304379187b396d56d6a1a406712c6bfa5a3	Fixed in 9192f304379187b396d56d6a1a406712c6bfa5a3
LinuxLinux	Affected ≥ 4090b31422a6f24dfe701e31ffec7ba5804a7e2f, < 5046a34f0643441f05b0253ea64e1a3af87efe14	Fixed in 5046a34f0643441f05b0253ea64e1a3af87efe14
LinuxLinux	Affected ≥ 4090b31422a6f24dfe701e31ffec7ba5804a7e2f, < 22ae28aae43623be235ff455558cdd13fbe2daeb	Fixed in 22ae28aae43623be235ff455558cdd13fbe2daeb
LinuxLinux	Affected =5.18	Fixed in–

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().

References

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