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Critical severity9.8NVD Advisory· Published May 8, 2026· Updated May 20, 2026

CVE-2026-43378

CVE-2026-43378

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.

Affected products

5
  • Linux/Kernel5 versions
    cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*+ 4 more
    • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*range: >=5.15,<6.1.167
    • cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*
    • cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*
    • cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*
    • (no CPE)

Patches

Vulnerability mechanics

References

6

News mentions

0

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