Use of Expired File Descriptor The advisory has been revoked - it doesn't affect any version of package kernel-headers (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-CENTOS9-KERNELHEADERS-7306522
- published21 Jun 2024
- disclosed19 Jun 2024
Introduced: 19 Jun 2024
CVE-2024-38580 (opens in a new tab)Amendment
The Centos security team deemed this advisory irrelevant for Centos:9.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-headers package and not the kernel-headers package as distributed by Centos.
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.
References
- https://access.redhat.com/security/cve/CVE-2024-38580
- https://git.kernel.org/stable/c/16e3182f6322575eb7c12e728ad3c7986a189d5d
- https://git.kernel.org/stable/c/4efaa5acf0a1d2b5947f98abb3acf8bfd966422b
- https://git.kernel.org/stable/c/4f65f4defe4e23659275ce5153541cd4f76ce2d2
- https://git.kernel.org/stable/c/559214eb4e5c3d05e69428af2fae2691ba1eb784
- https://git.kernel.org/stable/c/cbfd1088e24ec4c1199756a37cb8e4cd0a4b016e