CVE-2023-53377
High
Description
In the Linux kernel, the following vulnerability has been resolved: cifs: prevent use-after-free by freeing the cfile later In smb2_compound_op we have a possible use-after-free which can cause hard to debug problems later on. This was revealed during stress testing with KASAN enabled kernel. Fixing it by moving the cfile free call to a few lines below, after the usage.
SeverityHigh
CVSS7.8
Exploit probability—
Product
Linux Kernel
PublishedSep 18, 2025
First seenSep 18, 2025
Weakness typeCWE-416Use after free
How to fix
Update
- linux linux_kernel6.1.39, 6.3.13, 6.4.4 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 6.0.16 ≤ v < 6.1.39, 6.2 ≤ v < 6.3.13, 6.4 ≤ v < 6.4.4 | 6.1.39, 6.3.13, 6.4.4 |
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