Vulnerability Description
KGDB and KDB allow read and write access to kernel memory, and thus should be restricted during lockdown. An attacker with access to a serial port could trigger the debugger so it is important that the debugger respect the lockdown mode when/if it is triggered. CVSS 3.1 Base Score 6.7 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H).
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Oracle | Linux | 6 |
| Debian | Debian Linux | 11.0 |
Related Weaknesses (CWE)
References
- http://packetstormsecurity.com/files/168191/Kernel-Live-Patch-Security-Notice-LSThird Party AdvisoryVDB Entry
- https://git.kernel.org/linus/eadb2f47a3ced5c64b23b90fd2a3463f63726066Mailing ListPatchVendor Advisory
- https://www.debian.org/security/2022/dsa-5161Third Party Advisory
- http://packetstormsecurity.com/files/168191/Kernel-Live-Patch-Security-Notice-LSThird Party AdvisoryVDB Entry
- https://git.kernel.org/linus/eadb2f47a3ced5c64b23b90fd2a3463f63726066Mailing ListPatchVendor Advisory
- https://www.debian.org/security/2022/dsa-5161Third Party Advisory
FAQ
What is CVE-2022-21499?
CVE-2022-21499 is a vulnerability with a CVSS score of 6.7 (MEDIUM). KGDB and KDB allow read and write access to kernel memory, and thus should be restricted during lockdown. An attacker with access to a serial port could trigger the debugger so it is important that th...
How severe is CVE-2022-21499?
CVE-2022-21499 has been rated MEDIUM with a CVSS base score of 6.7/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2022-21499?
Check the references section above for vendor advisories and patch information. Affected products include: Oracle Linux, Debian Debian Linux.