CVE-2024-38580
EPSS
0.04 % (16th)
Advisories
18
NVD Status
Awaiting Analysis
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.
- CVE Status
- PUBLISHED
- NVD Status
- Awaiting Analysis
- CNA
- kernel.org
- Published Date
-
2024-06-19 14:15:18
(2 months ago) - Updated Date
-
2024-06-20 12:44:01
(2 months ago)
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