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Privilege Context Switching Error Affecting libperf package, versions *

Severity

 Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.47% (38th percentile)

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  • Snyk IDSNYK-CENTOS10-LIBPERF-18420901
  • published30 Jul 2026
  • disclosed25 Jul 2026
Report a new vulnerability Found a mistake?

Introduced: 25 Jul 2026

NewCVE-2026-64392  (opens in a new tab)
CWE-270  (opens in a new tab)

How to fix?

There is no fixed version for Centos:10 libperf.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libperf package and not the libperf package as distributed by Centos. See How to fix? for Centos:10 relevant fixed versions and status.

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

ksmbd: use opener credentials for delete-on-close

Delete-on-close can be completed by deferred or durable handle teardown, where no request work is available. Both the base-file unlink and the ADS xattr removal consequently run with the ksmbd worker credentials and can bypass filesystem permission checks.

Run both operations with the credentials captured in struct file when the handle was opened. This preserves the authenticated user's fsuid, fsgid, supplementary groups and capability restrictions at final close.