CVE-2022-21499
First published: Wed May 11 2022(Updated: )
A flaw was found in kernel/debug/debug_core.c in the Linux kernel in the lockdown mode. In this flaw, an attacker with local access could trigger the debugger, bypass lockdown and write anonymously. In this flaw, KGDB and KDB allow read and write access to kernel memory, and thus should not be allowed during lockdown. An attacker with access to a serial port could trigger the debugger and use it to bypass lockdown. Reference: <a href="https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=eadb2f47a3ced5c64b23b90fd2a3463f63726066">https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=eadb2f47a3ced5c64b23b90fd2a3463f63726066</a>
Credit: secalert_us@oracle.com secalert_us@oracle.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel-rt | <0:4.18.0-425.3.1.rt7.213.el8 | 0:4.18.0-425.3.1.rt7.213.el8 |
| redhat/kernel | <0:4.18.0-425.3.1.el8 | 0:4.18.0-425.3.1.el8 |
| redhat/kernel | <0:5.14.0-162.6.1.el9_1 | 0:5.14.0-162.6.1.el9_1 |
| redhat/kernel-rt | <0:5.14.0-162.6.1.rt21.168.el9_1 | 0:5.14.0-162.6.1.rt21.168.el9_1 |
| redhat/kernel | <5.19 | 5.19 |
| Oracle Linux | =6 | |
| Oracle Linux | =7 | |
| Oracle Linux | =8 | |
| Debian Debian Linux | =11.0 | |
| debian/linux | 5.10.223-1 5.10.226-1 6.1.123-1 6.1.119-1 6.12.10-1 6.12.11-1 |
Remedy
Mitigation for this issue is either not available or the currently available options don't 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://www.cve.org/CVERecord?id=CVE-2022-21499 https://nvd.nist.gov/vuln/detail/CVE-2022-21499 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=eadb2f47a3ced5c64b23b90fd2a3463f63726066
- https://bugzilla.redhat.com/show_bug.cgi?id=2084183
- https://access.redhat.com/errata/RHSA-2022:7444
- https://access.redhat.com/errata/RHSA-2022:7683
- https://access.redhat.com/errata/RHSA-2022:8267
- https://access.redhat.com/errata/RHSA-2022:7933
- https://access.redhat.com/security/cve/cve-2022-21499
- http://packetstormsecurity.com/files/168191/Kernel-Live-Patch-Security-Notice-LSN-0089-1.html
- https://git.kernel.org/linus/eadb2f47a3ced5c64b23b90fd2a3463f63726066
- https://www.debian.org/security/2022/dsa-5161
- https://launchpad.net/bugs/cve/CVE-2022-21499
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=eadb2f47a3ced5c64b23b90fd2a3463f63726066
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2096817
- https://access.redhat.com/errata/RHSA-2024:0724
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-21499
- https://nvd.nist.gov/vuln/detail/CVE-2022-21499
- https://security-tracker.debian.org/tracker/CVE-2022-21499
- https://ubuntu.com/security/CVE-2022-21499
- https://www.openwall.com/lists/oss-security/2022/05/24/7
Parent vulnerabilities
(Appears in the following advisories)
- collector/redhat-cve
- agent/type
- agent/first-publish-date
- collector/launchpad-cve
- source/Launchpad
- agent/weakness
- agent/author
- agent/severity
- collector/redhat-bugzilla
- source/Red Hat
- alias/CVE-2022-21499
- agent/software-canonical-lookup
- collector/mitre-cve
- source/MITRE
- collector/usn-cve
- source/Ubuntu
- agent/last-modified-date
- agent/references
- agent/remedy
- agent/description
- agent/event
- agent/trending
- agent/source
- agent/softwarecombine
- collector/nvd-index
- agent/software-canonical-lookup-request
- collector/nvd-cve
- source/NVD
- agent/tags
- collector/security-tracker-debian
- source/Debian
- package-manager/redhat
- vendor/oracle
- canonical/oracle linux
- version/oracle linux/6
- version/oracle linux/7
- version/oracle linux/8
- vendor/debian
- canonical/debian debian linux
- version/debian debian linux/11.0
- package-manager/debian