CVE-2026-43378

Summary

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxe2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 < e1b21e6066615e7d3d3a7aa2677e415e563fd7ccaffected
LinuxLinuxe2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 < b720c84087cb547f23ce03eab93568c1769e4556affected
LinuxLinuxe2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 < 54b48ae83de8bb06e65079d96368efe359d4909caffected
LinuxLinuxe2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 < 8f5b1a7cb009a93c48e9e334a2f59a660f9afc07affected
LinuxLinuxe2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 < 190e5f808e8058640b408ccfed25440b441a718aaffected
LinuxLinuxe2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 < 1e689a56173827669a35da7cb2a3c78ed5c53680affected
LinuxLinux5.15affected
LinuxLinux0 < 5.15unaffected
LinuxLinux6.1.167 <= 6.1.*unaffected
LinuxLinux6.6.130 <= 6.6.*unaffected
LinuxLinux6.12.78 <= 6.12.*unaffected
LinuxLinux6.18.19 <= 6.18.*unaffected
LinuxLinux6.19.9 <= 6.19.*unaffected
LinuxLinux7.0 <= *unaffected

Weaknesses

References