CVE-2017-6210 — The vrend_decode_reset function in vrend_decode

The vrend_decode_reset function in vrend_decode.c in virglrenderer before 0.6.0 allows local guest OS users to cause a denial of service (NULL pointer dereference and QEMU process crash) by destroying context 0 (zero).

01What is this vulnerability?

The vrend_decode_reset function in vrend_decode.c in virglrenderer before 0.6.0 allows local guest OS users to cause a denial of service (NULL pointer dereference and QEMU process crash) by destroying context 0 (zero).

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: 2017-03-15T14:59:00.760
• Last modified: 2026-05-13T00:24:29.033

09References

• www.openwall.com — http://www.openwall.com/lists/oss-security/2017/02/23/21
• www.securityfocus.com — http://www.securityfocus.com/bid/96439
• bugzilla.redhat.com — https://bugzilla.redhat.com/show_bug.cgi?id=1426170
• cgit.freedesktop.org — https://cgit.freedesktop.org/virglrenderer/commit/?id=0a5dff15912207b83018485f83…
• lists.freedesktop.org — https://lists.freedesktop.org/archives/virglrenderer-devel/2017-February/000145.…
• security.gentoo.org — https://security.gentoo.org/glsa/201707-06
• www.openwall.com — http://www.openwall.com/lists/oss-security/2017/02/23/21
• www.securityfocus.com — http://www.securityfocus.com/bid/96439
• bugzilla.redhat.com — https://bugzilla.redhat.com/show_bug.cgi?id=1426170
• cgit.freedesktop.org — https://cgit.freedesktop.org/virglrenderer/commit/?id=0a5dff15912207b83018485f83…