High severity7.5OSV Advisory· Published Jan 2, 2019· Updated Jun 17, 2026

CVE-2018-20657

Description

The demangle_template function in cplus-dem.c in GNU libiberty, as distributed in GNU Binutils 2.31.1, has a memory leak via a crafted string, leading to a denial of service (memory consumption), as demonstrated by cxxfilt, a related issue to CVE-2018-12698.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

GNU/BinutilsOSV3 versions
binutils-2_31, binutils-2_31_1, gdb-4_18-branchpoint, …+ 2 more
- (no CPE)range: binutils-2_31, binutils-2_31_1, gdb-4_18-branchpoint, …
- (no CPE)range: =2.31.1
- cpe:2.3:a:gnu:binutils:2.31.1:*:*:*:*:*:*:*
GNU/Libibertyllm-fuzzy

Patches

Vulnerability mechanics

References

gcc.gnu.org/bugzilla/show_bug.cginvdExploitIssue TrackingThird Party Advisory
www.securityfocus.com/bid/106444nvdThird Party AdvisoryVDB Entry
support.f5.com/csp/article/K62602089nvdThird Party Advisory
access.redhat.com/errata/RHSA-2019:3352nvd

News mentions

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cvss	0.488
epss	0.003
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000