#VU63913 Out-of-bounds read in Linux kernel - CVE-2021-3743
Published: June 1, 2022
Vulnerability identifier: #VU63913
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2021-3743
CWE-ID: CWE-125
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
Linux Foundation
Description
The vulnerability allows a local user to perform a denial of service attack.
The vulnerability exists due to a boundary condition in the Qualcomm IPC router protocol in the Linux kernel. A local user can gain access to out-of-bounds memory to leak internal kernel information or perform a denial of service attack.
Remediation
Install updates from vendor's website.
External links
- https://github.com/torvalds/linux/commit/7e78c597c3ebfd0cb329aa09a838734147e4f117
- https://www.openwall.com/lists/oss-security/2021/08/27/2
- https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/?id=7e78c597c3eb
- https://lists.openwall.net/netdev/2021/08/17/124
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7e78c597c3ebfd0cb329aa09a838734147e4f117
- https://bugzilla.redhat.com/show_bug.cgi?id=1997961
- https://security.netapp.com/advisory/ntap-20220407-0007/