CVE-2025-68814
Description
In the Linux kernel, the following vulnerability has been resolved: io_uring: fix filename leak in __io_openat_prep() __io_openat_prep() allocates a struct filename using getname(). However, for the condition of the file being installed in the fixed file table as well as having O_CLOEXEC flag set, the function returns early. At that point, the request doesn't have REQ_F_NEED_CLEANUP flag set. Due to this, the memory for the newly allocated struct filename is not cleaned up, causing a memory leak. Fix this by setting the REQ_F_NEED_CLEANUP for the request just after the successful getname() call, so that when the request is torn down, the filename will be cleaned up, along with other resources needing cleanup.
How to fix
- Linux Linux2420ef01b2e836fbc05a0a8c73a1016504eb0458, 8f44c4a550570cd5903625133f938c6b51310c9b, 18b99fa603d0df5e1c898699c17d3b92ddc80746, e232269d511566b1f80872256a48593acc1becf4, 7fbfb85b05bc960cc50e09d03e5e562131e48d45, b14fad555302a2104948feaff70503b64c80ac01 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | b9445598d8c60a1379887b957024b71343965f74 ≤ v < 2420ef01b2e836fbc05a0a8c73a1016504eb0458, b9445598d8c60a1379887b957024b71343965f74 ≤ v < 8f44c4a550570cd5903625133f938c6b51310c9b, b9445598d8c60a1379887b957024b71343965f74 ≤ v < 18b99fa603d0df5e1c898699c17d3b92ddc80746, b9445598d8c60a1379887b957024b71343965f74 ≤ v < e232269d511566b1f80872256a48593acc1becf4, b9445598d8c60a1379887b957024b71343965f74 ≤ v < 7fbfb85b05bc960cc50e09d03e5e562131e48d45, b9445598d8c60a1379887b957024b71343965f74 ≤ v < b14fad555302a2104948feaff70503b64c80ac01, 5.15 | 2420ef01b2e836fbc05a0a8c73a1016504eb0458, 8f44c4a550570cd5903625133f938c6b51310c9b, 18b99fa603d0df5e1c898699c17d3b92ddc80746, e232269d511566b1f80872256a48593acc1becf4, 7fbfb85b05bc960cc50e09d03e5e562131e48d45, b14fad555302a2104948feaff70503b64c80ac01 |
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