CVE-2021-3635: Buffer Overflow
First published: Mon Jun 28 2021(Updated: )
A flaw was found in the Linux kernel netfilter implementation in versions prior to 5.5-rc7. A user with root (CAP_SYS_ADMIN) access is able to panic the system when issuing netfilter netflow commands.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel-rt | <0:4.18.0-348.rt7.130.el8 | 0:4.18.0-348.rt7.130.el8 |
| redhat/kernel | <0:4.18.0-348.el8 | 0:4.18.0-348.el8 |
| Linux Linux kernel | <5.5 | |
| Linux Linux kernel | =5.5-rc1 | |
| Linux Linux kernel | =5.5-rc2 | |
| Linux Linux kernel | =5.5-rc3 | |
| Linux Linux kernel | =5.5-rc4 | |
| Linux Linux kernel | =5.5-rc5 | |
| Linux Linux kernel | =5.5-rc6 | |
| Redhat Enterprise Linux | =6.0 | |
| Redhat Enterprise Linux | =7.0 | |
| Redhat Enterprise Linux | =8.0 | |
| Fedoraproject Fedora | =34 |
Remedy
Mitigation for this issue is either not available or the currently available options does not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
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Reference Links
- https://bugzilla.redhat.com/show_bug.cgi?id=1976946
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1974543
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1990729
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1976946#c9
- https://git.kernel.org/linus/335178d5429c4cee61b58f4ac80688f556630818
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1976946#c10
- https://access.redhat.com/errata/RHSA-2021:4140
- https://access.redhat.com/errata/RHSA-2021:4356
- https://access.redhat.com/security/cve/cve-2021-3635
- https://www.cve.org/CVERecord?id=CVE-2021-3635 https://nvd.nist.gov/vuln/detail/CVE-2021-3635
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