SB2025082845 - Use-after-free in Linux kernel proc
Published: August 28, 2025
Security Bulletin ID
SB2025082845
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-2025-38653)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the proc_reg_open() function in fs/proc/inode.c, within the pde_set_flags() function in fs/proc/generic.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/1fccbfbae1dd36198dc47feac696563244ad81d3
- https://git.kernel.org/stable/c/33c778ea0bd0fa62ff590497e72562ff90f82b13
- https://git.kernel.org/stable/c/c35b0feb80b48720dfbbf4e33759c7be3faaebb6
- https://git.kernel.org/stable/c/d136502e04d8853a9aecb335d07bbefd7a1519a8
- https://git.kernel.org/stable/c/fc1072d934f687e1221d685cf1a49a5068318f34
- https://git.kernel.org/stable/c/ff7ec8dc1b646296f8d94c39339e8d3833d16c05