Buffer overflow in Oracle Linux
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).
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.7 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.006 (47.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 48th percentile — 47.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000
Affected products
- Oracle Linux — versions 6, 7, 8
- Oracle Corporation Linux — versions Oracle Linux: 6, Oracle Linux: 7, Oracle Linux: 8
- Oracle Corporation Vm — versions Oracle VM: 3
- Debian Linux — versions 11.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- git.kernel.org/linus/eadb2f47a3ced5c64b23b90fd2a3463f63726066 (Patch, Mailing List, Vendor Advisory)
- www.debian.org/security/2022/dsa-5161 (vendor-advisory, Third Party Advisory)
- packetstormsecurity.com/files/168191/Kernel-Live-Patch-Security-Notice-LSN-0089… (VDB Entry, Third Party Advisory)
Frequently asked questions
- What is CVE-2022-21499?
- CVE-2022-21499 is a medium-severity vulnerability in Oracle Linux, classified under Out-of-bounds Write. CVSS score: 6.7/10. Published 2022-06-09.
- How severe is CVE-2022-21499?
- Medium severity. CVSS v3 base score is 6.7 out of 10.
- Is CVE-2022-21499 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.