CVE-2017-5937 — The util_format_is_pure_uint function in vrend_renderer

The util_format_is_pure_uint function in vrend_renderer.c in Virgil 3d project (aka virglrenderer) 0.6.0 and earlier allows local guest OS users to cause a denial of service (NULL pointer dereference) via a crafted VIRGL_CCMD_CLEAR command.

01What is this vulnerability?

The util_format_is_pure_uint function in vrend_renderer.c in Virgil 3d project (aka virglrenderer) 0.6.0 and earlier allows local guest OS users to cause a denial of service (NULL pointer dereference) via a crafted VIRGL_CCMD_CLEAR command.

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: 2017-03-15T19:59:00.547
• Last modified: 2026-05-13T00:24:29.033

09References

• www.openwall.com — http://www.openwall.com/lists/oss-security/2017/02/09/4
• www.securityfocus.com — http://www.securityfocus.com/bid/96180
• bugzilla.redhat.com — https://bugzilla.redhat.com/show_bug.cgi?id=1420246
• cgit.freedesktop.org — https://cgit.freedesktop.org/virglrenderer/commit/?id=48f67f60967f963b698ec8df57…
• www.openwall.com — http://www.openwall.com/lists/oss-security/2017/02/09/4
• www.securityfocus.com — http://www.securityfocus.com/bid/96180
• bugzilla.redhat.com — https://bugzilla.redhat.com/show_bug.cgi?id=1420246
• cgit.freedesktop.org — https://cgit.freedesktop.org/virglrenderer/commit/?id=48f67f60967f963b698ec8df57…