CVE-2022-4843 — NULL Pointer Dereference in GitHub repository radareorg/radare2 prior to 5

NULL Pointer Dereference in GitHub repository radareorg/radare2 prior to 5.8.2.

01What is this vulnerability?

NULL Pointer Dereference in GitHub repository radareorg/radare2 prior to 5.8.2.

02Affected products

Vendor	Product	Versions
radareorg	radareorg/radare2	unspecified

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: 2022-12-29T00:00:00.000Z
• Last modified: 2025-04-09T15:47:07.025Z

09References

• huntr.dev — https://huntr.dev/bounties/075b2760-66a0-4d38-b3b5-e9934956ab7f
• github.com — https://github.com/radareorg/radare2/commit/842f809d4ec6a12af2906f948657281c9ebc…
• lists.fedoraproject.org — https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro…
• lists.fedoraproject.org — https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro…