CVE-2009-3621: canonical ubuntu_linux Uncontrolled Resource Consumption
Vulnerability summary
CVE-2009-3621 is a medium (CVSS 5.5) Uncontrolled Resource Consumption vulnerability in canonical ubuntu_linux. EPSS estimates a 0.99% chance of exploitation in the next 30 days, higher than 62.4% of scored vulnerabilities. 5 public exploits are recorded.
Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 6Timeline
- 22-10-2009PublishedVulnerability first disclosed.
- 07-08-2024Last modifiedVulnerability information updated.
Description
net/unix/af_unix.c in the Linux kernel 2.6.31.4 and earlier allows local users to cause a denial of service (system hang) by creating an abstract-namespace AF_UNIX listening socket, performing a shutdown operation on this socket, and then performing a series of connect operations to this socket.
CVSS metrics
2 scores · 1 source · 2 versionsEPSS trend
Probability
0.99%
Chance of exploitation in the next 30 days
Percentile
62%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.99% 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
5 foundExploit Reference (openwall.com)
Maturity: unknown
Exploit Reference (bugzilla.redhat.com)
Maturity: unknown
Exploit Reference (openwall.com)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Suse2 products
- suse_linux_enterprise_desktop10:sp2 | 10:sp3
- suse_linux_enterprise_server10:sp2 | 10:sp3
Canonical1 product
- ubuntu_linuxEOL6.06 | 8.04 | 8.10 | 9.04 | 9.10
Fedoraproject1 product
- fedoraEOL10
Linux1 product
- linux_kernel≤ 2.6.31.4
Opensuse1 product
- opensuseEOL11.0 | 11.2
6 vendors · 8 products
References
26 links- www.openwall.com/lists/oss-security/2009/10/19/2Mailing ListX Refsource MLISTExploitPatchThird Party Advisory
- bugzilla.redhat.com/show_bug.cgi?id=529626X Refsource CONFIRMExploitIssue TrackingThird Party Advisory
- www.openwall.com/lists/oss-security/2009/10/19/4Mailing ListX Refsource MLISTExploitPatchThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2009-12/msg00002.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory
- lists.vmware.com/pipermail/security-announce/2010/000082.htmlMailing ListX Refsource MLISTThird Party Advisory
Show all 26 references
- lists.opensuse.org/opensuse-security-announce/2010-01/msg00000.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory
- www.mandriva.com/security/advisories?name=MDVSA-2009:329Vendor AdvisoryX Refsource MANDRIVABroken Link
- lists.opensuse.org/opensuse-security-announce/2010-02/msg00005.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory
- git.kernel.orgX Refsource CONFIRM
- oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9921VDB EntrySignatureX Refsource OVALThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2009-12/msg00005.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory
- oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6895VDB EntrySignatureX Refsource OVALThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2010-02/msg00007.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory
- www.redhat.com/archives/fedora-package-announce/2009-November/msg00190.htmlVendor AdvisoryX Refsource FEDORAMailing ListThird Party Advisory