SB20240608107 - Out-of-bounds read in Linux kernel tty vt driver
Published: June 8, 2024 Updated: May 13, 2025
Security Bulletin ID
SB20240608107
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-2021-47383)
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 vc_do_resize() function in drivers/tty/vt/vt.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/7e71fcedfda6f7de18f850a6b36e78d78b04476f
- https://git.kernel.org/stable/c/70aed03b1d5a5df974f456cdc8eedb213c94bb8b
- https://git.kernel.org/stable/c/067c694d06040db6f0c65281bb358452ca6d85b9
- https://git.kernel.org/stable/c/8a6a240f52e14356386030d8958ae8b1761d2325
- https://git.kernel.org/stable/c/883f7897a25e3ce14a7f274ca4c73f49ac84002a
- https://git.kernel.org/stable/c/d570c48dd37dbe8fc6875d4461d01a9554ae2560
- https://git.kernel.org/stable/c/699d926585daa6ec44be556cdc1ab89e5d54557b
- https://git.kernel.org/stable/c/3b0c406124719b625b1aba431659f5cdc24a982c
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.249
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.209
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.286
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.285
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.71
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.14.10
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.151