CVE-2025-68814
Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
13/01/2026
Last modified:
19/01/2026
Description
In the Linux kernel, the following vulnerability has been resolved:<br />
<br />
io_uring: fix filename leak in __io_openat_prep()<br />
<br />
__io_openat_prep() allocates a struct filename using getname(). However,<br />
for the condition of the file being installed in the fixed file table as<br />
well as having O_CLOEXEC flag set, the function returns early. At that<br />
point, the request doesn&#39;t have REQ_F_NEED_CLEANUP flag set. Due to this,<br />
the memory for the newly allocated struct filename is not cleaned up,<br />
causing a memory leak.<br />
<br />
Fix this by setting the REQ_F_NEED_CLEANUP for the request just after the<br />
successful getname() call, so that when the request is torn down, the<br />
filename will be cleaned up, along with other resources needing cleanup.
Impact
References to Advisories, Solutions, and Tools
- https://git.kernel.org/stable/c/18b99fa603d0df5e1c898699c17d3b92ddc80746
- https://git.kernel.org/stable/c/2420ef01b2e836fbc05a0a8c73a1016504eb0458
- https://git.kernel.org/stable/c/7fbfb85b05bc960cc50e09d03e5e562131e48d45
- https://git.kernel.org/stable/c/8f44c4a550570cd5903625133f938c6b51310c9b
- https://git.kernel.org/stable/c/b14fad555302a2104948feaff70503b64c80ac01
- https://git.kernel.org/stable/c/e232269d511566b1f80872256a48593acc1becf4



