SB2025102882 - Memory leak in Linux kernel uio driver
Published: October 28, 2025
Security Bulletin ID
SB2025102882
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Memory leak (CVE-ID: CVE-2025-40048)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to memory leak within the hv_uio_channel_cb(), hv_uio_new_channel() and hv_uio_open() functions in drivers/uio/uio_hv_generic.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/01ce972e6f9974a7c76943bcb7e93746917db83a
- https://git.kernel.org/stable/c/2af39ab5e6dc46b835a52e80a22d0cad430985e3
- https://git.kernel.org/stable/c/37bd91f22794dc05436130d6983302cb90ecfe7e
- https://git.kernel.org/stable/c/a44f61f878f32071d6378e8dd7c2d47f9490c8f7
- https://git.kernel.org/stable/c/b15b7d2a1b09ef5428a8db260251897405a19496
- https://git.kernel.org/stable/c/e29587c07537929684faa365027f4b0d87521e1b