smb/server: fix possible memory leak in smb2_read()
CVE-2025-40286 is fixed in linux on 1 platform, first by DEBIAN-CVE-2025-40286, released December 6, 2025. It is not reported as exploited. Patch Radar priority: Routine.
In the Linux kernel, the following vulnerability has been resolved: smb/server: fix possible memory leak in smb2_read() Memory leak occurs when ksmbd_vfs_read() fails. Fix this by adding the missing kvfree().
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| linux · Debian 12.15 (bookworm) | 6.1.159-1 | DEBIAN-CVE-2025-40286 | Dec 6, 2025 |
| linux · Debian 13.5 (trixie) | 6.12.63-1 | DEBIAN-CVE-2025-40286 | Dec 6, 2025 |
| linux · Debian 14 | 6.17.9-1 | DEBIAN-CVE-2025-40286 | Dec 6, 2025 |
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