Out-of-bounds Read Affecting kernel-bootwrapper package, versions *
Threat Intelligence
EPSS
0.04% (6th
percentile)
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Test your applications- Snyk ID SNYK-RHEL7-KERNELBOOTWRAPPER-1409658
- published 26 Jul 2021
- disclosed 23 Jun 2021
How to fix?
There is no fixed version for RHEL:7 kernel-bootwrapper.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-bootwrapper package and not the kernel-bootwrapper package as distributed by RHEL.
See How to fix? for RHEL:7 relevant fixed versions and status.
It was discovered that the eBPF implementation in the Linux kernel did not properly track bounds information for 32 bit registers when performing div and mod operations. A local attacker could use this to possibly execute arbitrary code.
References
- https://access.redhat.com/security/cve/CVE-2021-3600
- https://access.redhat.com/errata/RHSA-2021:4140
- https://access.redhat.com/errata/RHSA-2021:4356
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3600
- https://git.kernel.org/linus/e88b2c6e5a4d9ce30d75391e4d950da74bb2bd90
- https://ubuntu.com/security/notices/USN-5003-1
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