SB20240530173 - Use-after-free in Linux kernel smb client
Published: May 30, 2024 Updated: May 14, 2025
Security Bulletin ID
SB20240530173
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Use-after-free (CVE-ID: CVE-2023-52757)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the alloc_mid() function in fs/smb/client/transport.c, within the __smb2_handle_cancelled_cmd() function in fs/smb/client/smb2misc.c, within the cifs_compose_mount_options(), __release_mid() and cifs_get_tcon_super() functions in fs/smb/client/cifsproto.h. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/9eb44db68c5b7f5aa22b8fc7de74a3e2e08d1f29
- https://git.kernel.org/stable/c/b9bb9607b1fc12fca51f5632da25b36975f599bf
- https://git.kernel.org/stable/c/c1a5962f1462b64fe7b69f20a4b6af8067bc2d26
- https://git.kernel.org/stable/c/e6322fd177c6885a21dd4609dc5e5c973d1a2eb7
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.237
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.181
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.64
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.5.13
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.3
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.7