CVE-2011-2491: linux linux_kernel Uncontrolled Resource Consumption
Vulnerability summary
CVE-2011-2491 is a medium (CVSS 4.9) Uncontrolled Resource Consumption vulnerability in linux linux_kernel. EPSS estimates a 0.40% chance of exploitation in the next 30 days, higher than 34.2% of scored vulnerabilities.
Not severe (CVSS 4.9, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 6Timeline
- 01-03-2013PublishedVulnerability first disclosed.
- 06-08-2024Last modifiedVulnerability information updated.
Description
The Network Lock Manager (NLM) protocol implementation in the NFS client functionality in the Linux kernel before 3.0 allows local users to cause a denial of service (system hang) via a LOCK_UN flock system call.
CVSS metrics
1 score · 1 source · 1 versionEPSS trend
Probability
0.40%
Chance of exploitation in the next 30 days
Percentile
34%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.40% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: local access, no authentication (CVSS vector). Other conditions: not stated in public data.
Ubuntu9 products
- linux< 3.11.0-12.19
- linux-flo< 3.4.0-1.3
- linux-goldfish< 3.4.0-1.9
- linux-grouper< 3.1.10-8.28
- linux-lts-utopic< 3.16.0-25.33~14.04.2
Redhat3 products
Linux1 product
- linux_kernel< 3.0
3 vendors · 13 products
References
20 links- github.com/torvalds/linux/commit/0b760113a3a155269a3fba93a409c640031dd68fX Refsource CONFIRMPatchThird Party Advisory
- www.openwall.com/lists/oss-security/2011/06/23/6Mailing ListX Refsource MLISTPatchThird Party Advisory
- git.kernel.orgX Refsource CONFIRM
- bugzilla.redhat.com/show_bug.cgi?id=709393X Refsource CONFIRMIssue TrackingPatchThird Party Advisory