SB20251230189 - Out-of-bounds read in Linux kernel tty driver
Published: December 30, 2025 Updated: December 31, 2025
Security Bulletin ID
SB20251230189
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) Out-of-bounds read (CVE-ID: CVE-2023-54198)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to an out-of-bounds read error within the tty_driver_lookup_tty() function in drivers/tty/tty_io.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/3df6f492f500a16c231f07ccc6f6ed1302caddf9
- https://git.kernel.org/stable/c/765566110eb0da3cf60198b0165ecceeaafa6444
- https://git.kernel.org/stable/c/84ea44dc3e4ecb2632586238014bf6722aa5843b
- https://git.kernel.org/stable/c/953a4a352a0c185460ae1449e4c6e6658e55fdfc
- https://git.kernel.org/stable/c/b79109d6470aaae7062998353e3a19449055829d
- https://git.kernel.org/stable/c/db4df8e9d79e7d37732c1a1b560958e8dadfefa1
- https://git.kernel.org/stable/c/f9d9d25ad1f0d060eaf297a2f7f03b5855a45561
- https://git.kernel.org/stable/c/fcfeaa570f7a5c2d5f4f14931909531ff18b7fde
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.2.5