SB20250226374 - NULL pointer dereference in Linux kernel tty driver
Published: February 26, 2025 Updated: May 11, 2025
Security Bulletin ID
SB20250226374
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) NULL pointer dereference (CVE-ID: CVE-2022-49307)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the hdlcdev_init() function in drivers/tty/synclink_gt.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/078212ad15dbd88840c82c97f12c93d83703c8fd
- https://git.kernel.org/stable/c/1ceb4ca9543a8a788febf6bc8dad2e605e172d5e
- https://git.kernel.org/stable/c/50c341f9a2adc4c32a8ad5a39eb99d9c4a419e0d
- https://git.kernel.org/stable/c/689ca31c542687709ba21ec2195c1fbce34fd029
- https://git.kernel.org/stable/c/8a95696bdc0e13f8980f05b54a3b9081963d1256
- https://git.kernel.org/stable/c/ba08cbc5b53e151d0acf1930fb526fc65b7f3e65
- https://git.kernel.org/stable/c/d68d5e68b7f64de7170f8e04dd9b995c36b2c71c
- https://git.kernel.org/stable/c/ddd67751ab86c6a65f95c35293c42f85a42ac05d
- https://git.kernel.org/stable/c/f6e07eb7ebec53ffe81fc2489589320fbe4a6b75
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.198