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Vulnerabilities

Vulnerability · CVE-2022-27943

libiberty/rust-demangle.c in GNU GCC 11.2 allows stack consumption in demangle_const, as demonstrated by nm-new.

Published Mar 26, 2022 · catalog updated Oct 14, 2026 · libiberty/rust-demangle.c in GNU GCC

Check if you run it

No confirmed exploitation is on record for CVE-2022-27943. EPSS is 0.95%. Act only if a listed version of libiberty/rust-demangle.c in GNU GCC is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (libiberty/rust-demangle.c in GNU GCC).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium5.5
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.95%
Remediation
Not established
Affected products
cpe fedoraproject/fedora · cpe gnu/gcc

libiberty/rust-demangle.c in GNU GCC 11.2 allows stack consumption in demangle_const, as demonstrated by nm-new.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe fedoraproject/fedora36
  • cpe gnu/gcc11.2

How to fix CVE-2022-27943

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2022-27943. EPSS is 0.95%. Act only if a listed version of libiberty/rust-demangle.c in GNU GCC is installed.

Which versions are affected?

Compare what you have installed with 36, 11.2. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-674. EPSS 0.95%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Mar 26, 2022 · NIST NVD

    Detected

    libiberty/rust-demangle.c in GNU GCC 11.2 allows stack consumption in demangle_const, as demonstrated by nm-new.

  2. Oct 14, 2026 · NIST NVD

    Updated

    libiberty/rust-demangle.c in GNU GCC 11.2 allows stack consumption in demangle_const, as demonstrated by nm-new.

Sources

  • CVE.orgVulnerability recordCVE-2022-27943

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2022-27943

    30-day exploitation probability 1.0%

    first.org
  • NIST NVDVulnerability recordCVE-2022-27943

    libiberty/rust-demangle.c in GNU GCC 11.2 allows stack consumption in demangle_const, as demonstrated by nm-new.

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 16, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.