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Fencer Intel
medium 5.0

CVE-2012-4517 json

ibacm before 1.0.6 does not properly manage reference counts for multicast connections, which allows remote attackers to cause a denial of…

published 2012-10-22 14 y ago modified 2026-06-16 4 mo ago also EUVD-2012-4446

cvss
5.0
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.8%
EPSS 2.8% chance of exploitation in 30 days, percentile 86%
public exploits
0
none known

Summary

ibacm before 1.0.6 does not properly manage reference counts for multicast connections, which allows remote attackers to cause a denial of service (ibacm service crash) via a crafted join response.

Patch / fix

  • rdma RHEL 6 3.6-1.el6
  • ibacm RHEL 6 1.0.8-0.git7a3adb7.el6
  • ibsim RHEL 6 0.5-7.el6
  • opensm RHEL 6 3.3.15-1.el6
  • ibutils RHEL 6 1.5.7-7.el6
  • libmlx4 RHEL 6 1.0.4-1.el6
  • libibmad RHEL 6 1.3.9-1.el6
  • libibumad RHEL 6 1.3.8-1.el6

red hat advisories RHSA-2013:0509

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2012-4517 updated cvss 4.3

ibacm: DoS (ibacm deamon crash) by joining responses for multicast destinations

  • Red Hat Enterprise Linux Desktop (v. 6) libibverbs 1.1.6-5.el6, librdmacm 1.0.17-0.git4b5c1aa.el6, infinipath-psm 3.0.1-115.1015_open.1.el6 Red Hat Enterprise Linux Desktop Optional (v. 6) rdma 3.6-1.el6, libmlx4 1.0.4-1.el6, opensm 3.3.15-1.el6, libibmad 1.3.9-1.el6, libibumad 1.3.8-1.el6, libibverbs 1.1.6-5.el6, +6 more Red Hat Enterprise Linux HPC Node (v. 6) rdma 3.6-1.el6, ibsim 0.5-7.el6, ibutils 1.5.7-7.el6, libmlx4 1.0.4-1.el6, opensm 3.3.15-1.el6, libibmad 1.3.9-1.el6, +10 more Red Hat Enterprise Linux HPC Node Optional (v. 6) ibutils 1.5.7-7.el6, libmlx4 1.0.4-1.el6, opensm 3.3.15-1.el6, libibmad 1.3.9-1.el6, libibumad 1.3.8-1.el6, libibverbs 1.1.6-5.el6, +4 more Red Hat Enterprise Linux Server (v. 6) rdma 3.6-1.el6, ibsim 0.5-7.el6, ibutils 1.5.7-7.el6, libmlx4 1.0.4-1.el6, opensm 3.3.15-1.el6, libibmad 1.3.9-1.el6, +10 more Red Hat Enterprise Linux Server Optional (v. 6) ibutils 1.5.7-7.el6, libmlx4 1.0.4-1.el6, opensm 3.3.15-1.el6, libibmad 1.3.9-1.el6, libibumad 1.3.8-1.el6, libibverbs 1.1.6-5.el6, +4 more
    +2 more products
    Red Hat Enterprise Linux Workstation (v. 6) rdma 3.6-1.el6, ibsim 0.5-7.el6, ibutils 1.5.7-7.el6, libmlx4 1.0.4-1.el6, opensm 3.3.15-1.el6, libibmad 1.3.9-1.el6, +10 more Red Hat Enterprise Linux Workstation Optional (v. 6) ibutils 1.5.7-7.el6, libmlx4 1.0.4-1.el6, opensm 3.3.15-1.el6, libibmad 1.3.9-1.el6, libibumad 1.3.8-1.el6, libibverbs 1.1.6-5.el6, +4 more
    fixed: vendor fix RHSA-2013:0509

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

2.82% chance of exploitation in the next 30 days, higher than 86% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P

Classification

Weakness
  • CWE-399 Resource Management Errors

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.