CVE-2022-21499
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).
Key facts
- CVSS score
- 6.7 (v3.1)
- Severity
- MEDIUM
- CVSS vector
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H- Weakness (CWE)
- CWE-787
- EPSS score
- 0.6% (48th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2022-26723)
- Published
- June 9, 2022
- NVD last modified
- June 17, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2022-26723 in the EU Vulnerability Database. Last updated in EUVD on September 24, 2024.
View on the EU Vulnerability DatabaseAffected products
- debian / debian linux
- oracle / linux
- oracle / linux
- oracle / linux
Certified products that may be affected
31 FIPS 140 or Common Criteria certified products, from automated matching by sec-certs.org.
- Oracle Linux 8 Unbreakable Enterprise Kernel (UEK7) Cryptographic Module and Oracle Linux 9 Unbreakable Enterprise Kernel (UEK7) Cryptographic Module - Oracle Corporation - FIPS 140 4739 - active
- Oracle Linux 7 NSS Cryptographic Module - Oracle Corporation - FIPS 140 4586 - historical
- Oracle Linux 7 Libreswan Cryptographic Module - Oracle Corporation - FIPS 140 4266 - historical
- Oracle Linux 8 libgcrypt Cryptographic Module - Oracle Corporation - FIPS 140 4232 - historical
- Oracle Linux 8 GnuTLS Cryptographic Module - Oracle Corporation - FIPS 140 4229 - historical
See all 31 in the Security Certifications Explorer.
References
- http://packetstormsecurity.com/files/168191/Kernel-Live-Patch-Security-Notice-LSN-0089-1.html(Third Party Advisory, VDB Entry)
- https://git.kernel.org/linus/eadb2f47a3ced5c64b23b90fd2a3463f63726066(Mailing List, Patch, Vendor Advisory)
- https://www.debian.org/security/2022/dsa-5161(Third Party Advisory)
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
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