CVE-2019-7309
UnknownEPSS 0.61%
Last modified
CVE-2019-7309 is a vulnerability of currently unknown severity. In the GNU C Library (aka glibc or libc6) through 2.29, the memcmp function for the x32 architecture can incorrectly return zero (indicating that the inputs are equal) because the RDX most significant bit is mishandled.. EPSS estimates a 0.61% chance of exploitation in the next 30 days.
Description
In the GNU C Library (aka glibc or libc6) through 2.29, the memcmp function for the x32 architecture can incorrectly return zero (indicating that the inputs are equal) because the RDX most significant bit is mishandled.
Metrics
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Gnu | Glibc | <= 2.29 |
References
- http://www.securityfocus.com/bid/106835Third Party Advisory, VDB Entry
- https://sourceware.org/bugzilla/show_bug.cgi?id=24155Exploit, Issue Tracking, Third Party Advisory
- https://sourceware.org/ml/libc-alpha/2019-02/msg00041.htmlMailing List, Third Party Advisory
- http://www.securityfocus.com/bid/106835Third Party Advisory, VDB Entry
- https://sourceware.org/bugzilla/show_bug.cgi?id=24155Exploit, Issue Tracking, Third Party Advisory
- https://sourceware.org/ml/libc-alpha/2019-02/msg00041.htmlMailing List, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2019-7309?
In the GNU C Library (aka glibc or libc6) through 2.29, the memcmp function for the x32 architecture can incorrectly return zero (indicating that the inputs are equal) because the RDX most significant bit is mishandled.
How severe is CVE-2019-7309?
Severity scoring for CVE-2019-7309 is pending analysis. The EPSS model estimates a 0.61% probability of exploitation in the next 30 days.
How do I fix CVE-2019-7309?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
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Are you affected by CVE-2019-7309?
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