CVE-2024-38580 Affecting kernel-modules-extra package, versions *


Severity

Recommended
0.0
low
0
10

Based on CentOS security rating.

Threat Intelligence

EPSS
0.05% (18th percentile)

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  • Snyk IDSNYK-CENTOS8-KERNELMODULESEXTRA-7328317
  • published21 Jun 2024
  • disclosed19 Jun 2024

Introduced: 19 Jun 2024

CVE-2024-38580  (opens in a new tab)

How to fix?

There is no fixed version for Centos:8 kernel-modules-extra.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-modules-extra package and not the kernel-modules-extra package as distributed by Centos. See How to fix? for Centos:8 relevant fixed versions and status.

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

epoll: be better about file lifetimes

epoll can call out to vfs_poll() with a file pointer that may race with the last 'fput()'. That would make f_count go down to zero, and while the ep->mtx locking means that the resulting file pointer tear-down will be blocked until the poll returns, it means that f_count is already dead, and any use of it won't actually get a reference to the file any more: it's dead regardless.

Make sure we have a valid ref on the file pointer before we call down to vfs_poll() from the epoll routines.

CVSS Scores

version 3.1