01 Record
CVE-2011-4621
The Linux kernel before 2.6.37 does not properly implement a certain clock-update optimization, which allows local users to cause a denial of service (system hang) via an application that executes
UnratedPUBLISHEDCNA: redhat
CNA base scoreUnratedNo CNA CVSS vector
02 Description
The Linux kernel before 2.6.37 does not properly implement a certain clock-update optimization, which allows local users to cause a denial of service (system hang) via an application that executes
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 0.44% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 38.0% of scored records. A rank, not a probability.
- NVD base score
- 5.5 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-16.
- Red Hat severity
- Moderate. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2012-05-17 10:00Z14 YR AGO
- Last updated
- 2024-08-07 00:09Z2 YR AGO
- Reserved
- 2011-11-29
- Assigning CNA
- redhat
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- CWE-835Loop with Unreachable Exit Condition ('Infinite Loop')Base
- Data version
- 5.1
- Document digest
- 0abb4859f20705ff00a9958a3f07c971419af8a657ec982acdecb63fad42882f
05 Affected products
VendorProductVersionsPlatforms
06 References
- github.comhttps://github.com/torvalds/linux/commit/f26f9aff6aaf67e9a430d16c266f91b13a5bff64
- ftp.osuosl.orghttp://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.37
- www.openwall.com[oss-security] 20111221 Re: CVE Request -- kernel: tight loop and no preemption can cause system stallhttp://www.openwall.com/lists/oss-security/2011/12/21/6
- bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=769711
- git.kernel.orghttp://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=f26f9aff6aaf67e9a430d16c266f91b13a5bff64