Out-of-bounds Read Affecting kernel-tools package, versions <0:4.18.0-553.el8_10
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Test your applications- Snyk ID SNYK-RHEL8-KERNELTOOLS-1584590
- published 14 Sep 2021
- disclosed 1 Sep 2021
Introduced: 1 Sep 2021
CVE-2021-3753 Open this link in a new tabHow to fix?
Upgrade RHEL:8 kernel-tools to version 0:4.18.0-553.el8_10 or higher.
This issue was patched in RHSA-2024:3138.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-tools package and not the kernel-tools package as distributed by RHEL.
See How to fix? for RHEL:8 relevant fixed versions and status.
A race problem was seen in the vt_k_ioctl in drivers/tty/vt/vt_ioctl.c in the Linux kernel, which may cause an out of bounds read in vt as the write access to vc_mode is not protected by lock-in vt_ioctl (KDSETMDE). The highest threat from this vulnerability is to data confidentiality.
References
- https://access.redhat.com/security/cve/CVE-2021-3753
- https://bugzilla.redhat.com/show_bug.cgi?id=1999589
- https://github.com/torvalds/linux/commit/2287a51ba822384834dafc1c798453375d1107c7
- https://security.netapp.com/advisory/ntap-20221028-0003/
- https://www.openwall.com/lists/oss-security/2021/09/01/4