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
Configurations
Configuration 1 (hide)
|
History
20 Oct 2025, 22:09
| Type | Values Removed | Values Added |
|---|---|---|
| First Time |
Linux
Linux linux Kernel |
|
| CPE | cpe:2.3:o:linux:linux_kernel:6.9:rc2:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.9:rc4:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.9:rc1:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.9:rc3:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.9:rc6:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.9:rc5:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 4.7 |
| References | () https://git.kernel.org/stable/c/16e3182f6322575eb7c12e728ad3c7986a189d5d - Patch | |
| References | () https://git.kernel.org/stable/c/4efaa5acf0a1d2b5947f98abb3acf8bfd966422b - Patch | |
| References | () https://git.kernel.org/stable/c/4f65f4defe4e23659275ce5153541cd4f76ce2d2 - Patch | |
| References | () https://git.kernel.org/stable/c/559214eb4e5c3d05e69428af2fae2691ba1eb784 - Patch | |
| References | () https://git.kernel.org/stable/c/cbfd1088e24ec4c1199756a37cb8e4cd0a4b016e - Patch | |
| CWE | NVD-CWE-noinfo |
Information
Published : 2024-06-19 14:15
Updated : 2025-10-20 22:09
NVD link : CVE-2024-38580
Mitre link : CVE-2024-38580
CVE.ORG link : CVE-2024-38580
JSON object : View
Products Affected
linux
- linux_kernel
CWE