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Fencer Intel
low 3.3

CVE-2015-3239 json

Off-by-one error in the dwarf_to_unw_regnum function in include/dwarf_i.h in libunwind 1.1 allows local users to have unspecified impact vi…

published 2015-08-26 11 y ago modified 2026-06-17 4 mo ago also EUVD-2015-3295

cvss
3.3
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 42%
public exploits
0
none known

Summary

Off-by-one error in the dwarf_to_unw_regnum function in include/dwarf_i.h in libunwind 1.1 allows local users to have unspecified impact via invalid dwarf opcodes.

Patch / fix

  • libunwind Debian 14, Debian 13, Debian 12 1.1-4
  • android-platform-external-libunwind Debian 13, Debian 12 7.0.0+r1-4

debian advisories DEBIAN-CVE-2015-3239

  • libunwind openstack 6, openstack 5 1.1-4.1.el7ost
  • libunwind openstack 5 1.1-4.1.el6ost

red hat advisories RHSA-2015:1769RHSA-2015:1768RHSA-2015:1675

  • libunwind SLES for SAP 12 SP4, SLES for SAP 12 SP3, SLES 12 SP4 +5 more 1.1-11.3.1

suse advisories SUSE-SU-2019:0284-1

  • libunwind openSUSE Tumbleweed 1.2~rc1-2.3

opensuse advisories openSUSE-SU-2024:10288-1

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-2015-3239 updated cvss 3.3

libunwind: off-by-one in dwarf_to_unw_regnum()

  • Red Hat Ceph Storage 1.1 libunwind Red Hat Ceph Storage 1.2 libunwind Red Hat Enterprise Linux OpenStack Platform 6 (Juno) Installer libunwind Red Hat Software Collections mongodb24-libunwind, rh-mongodb26-libunwind
    affected: no fix planned “Will not fix”
  • Red Hat Enterprise Linux OpenStack Platform 5.0 (Icehouse) for RHEL 6 libunwind 1.1-4.1.el6ost
    fixed: vendor fix RHSA-2015:1768
  • Red Hat Enterprise Linux OpenStack Platform 5.0 (Icehouse) for RHEL 7 libunwind 1.1-4.1.el7ost
    fixed: vendor fix RHSA-2015:1769
  • Red Hat Enterprise Linux OpenStack Platform 6.0 (Juno) for RHEL 7 libunwind 1.1-4.1.el7ost
    fixed: vendor fix RHSA-2015:1675
  • Red Hat Enterprise Linux 5 libunwind Red Hat Enterprise Linux 7 libunwind Red Hat Enterprise Linux OpenStack Platform 7 (Kilo) libunwind
    not affected: vulnerable code not present

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

0.50% chance of exploitation in the next 30 days, higher than 42% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • bugzilla.redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=1232265 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 3.3 AV:L/AC:M/Au:N/C:P/I:P/A:N

Classification

Weakness

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.