SB2024060546 - Integer underflow in Linux kernel tpm eventlog driver
Published: June 5, 2024 Updated: May 13, 2025
Security Bulletin ID
SB2024060546
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) Integer underflow (CVE-ID: CVE-2021-46951)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to integer underflow within the tpm_read_log_efi() function in drivers/char/tpm/eventlog/efi.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/2f12258b5224cfaa808c54fd29345f3c1cbfca76
- https://git.kernel.org/stable/c/60a01ecc9f68067e4314a0b55148e39e5d58a51b
- https://git.kernel.org/stable/c/3818b753277f5ca0c170bf5b98e0a5a225542fcb
- https://git.kernel.org/stable/c/ac07c557ca12ec9276c0375517bac7ae5be4e50c
- https://git.kernel.org/stable/c/48cff270b037022e37835d93361646205ca25101
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.36
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.20
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.3
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.118