Vulnerability Description
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.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.15, < 6.1.167 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/190e5f808e8058640b408ccfed25440b441a718aPatch
- https://git.kernel.org/stable/c/1e689a56173827669a35da7cb2a3c78ed5c53680Patch
- https://git.kernel.org/stable/c/54b48ae83de8bb06e65079d96368efe359d4909cPatch
- https://git.kernel.org/stable/c/8f5b1a7cb009a93c48e9e334a2f59a660f9afc07Patch
- https://git.kernel.org/stable/c/b720c84087cb547f23ce03eab93568c1769e4556Patch
- https://git.kernel.org/stable/c/e1b21e6066615e7d3d3a7aa2677e415e563fd7ccPatch
FAQ
What is CVE-2026-43378?
CVE-2026-43378 is a vulnerability with a CVSS score of 9.8 (CRITICAL). 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...
How severe is CVE-2026-43378?
CVE-2026-43378 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2026-43378?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.