SB20250502139 - Use-after-free in Linux kernel smb server
Published: May 2, 2025 Updated: May 23, 2025
Security Bulletin ID
SB20250502139
Severity
High
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote 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-2025-37778)
The vulnerability allows a remote attacker to compromise the affected system.
The vulnerability exists due to a use-after-free error within the krb5_authenticate() function in fs/smb/server/smb2pdu.c. A remote attacker can trick the victim into connecting to a malicious SMB server and execute arbitrary code on the target system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/1db2451de23e98bc864c6a6e52aa0d82c91cb325
- https://git.kernel.org/stable/c/1e440d5b25b7efccb3defe542a73c51005799a5f
- https://git.kernel.org/stable/c/6e30c0e10210c714f3d4453dc258d4abcc70364e
- https://git.kernel.org/stable/c/d5b554bc8d554ed6ddf443d3db2fad9f665cec10
- https://git.kernel.org/stable/c/e83e39a5f6a01a81411a4558a59a10f87aa88dd6
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.14.4