CVE-2017-7223 — GNU assembler in GNU Binutils 2

GNU assembler in GNU Binutils 2.28 is vulnerable to a global buffer overflow (of size 1) while attempting to unget an EOF character from the input stream, potentially leading to a program crash.

01What is this vulnerability?

GNU assembler in GNU Binutils 2.28 is vulnerable to a global buffer overflow (of size 1) while attempting to unget an EOF character from the input stream, potentially leading to a program crash.

02Affected products

No structured affected-product list available — see references below for vendor advisories.

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: 2017-03-22T16:59:00.167
• Last modified: 2026-05-13T00:24:29.033

09References

• security.gentoo.org — https://security.gentoo.org/glsa/201801-01
• sourceware.org — https://sourceware.org/bugzilla/show_bug.cgi?id=20898
• security.gentoo.org — https://security.gentoo.org/glsa/201801-01
• sourceware.org — https://sourceware.org/bugzilla/show_bug.cgi?id=20898