CVE-2022-39170 — libdwarf 0

libdwarf 0.4.1 has a double free in _dwarf_exec_frame_instr in dwarf_frame.c.

01What is this vulnerability?

libdwarf 0.4.1 has a double free in _dwarf_exec_frame_instr in dwarf_frame.c.

02Affected products

Vendor	Product	Versions
n	a / n/a	n/a

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2022-09-02T02:28:53.000Z
• Last modified: 2024-08-03T12:00:42.570Z

09References

• github.com — https://github.com/davea42/libdwarf-code/issues/132
• github.com — https://github.com/davea42/libdwarf-code/commit/60303eb80ecc7747bf29776d545e2a5c…
• lists.fedoraproject.org — https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro…