linux: In the Linux kernel, the following vulnerability has been resolved: smb: server: fix use-after-free in smb2_open()...
CVE-2026-43378 is fixed in linux on 1 platform, first by DEBIAN-CVE-2026-43378, released May 15, 2026. It is not reported as exploited. Patch Radar priority: High.
In the Linux kernel, the following vulnerability has been resolved: smb: server: fix use-after-free in smb2_open() The opinfo pointer obtained via rcu_dereference(fp->f_opinfo) is dereferenced after rcu_read_unlock(), creating a use-after-free window.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| linux · Debian 12.15 (bookworm) | 6.1.170-1 | DEBIAN-CVE-2026-43378 | May 15, 2026 |
| linux · Debian 13.5 (trixie) | 6.12.85-1 | DEBIAN-CVE-2026-43378 | May 15, 2026 |
| linux · Debian 14 | 6.19.10-1 | DEBIAN-CVE-2026-43378 | May 15, 2026 |
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