CVE-2017-6209 [Medium] | Memory Corruption in Virglrenderer

Stack-based buffer overflow in the parse_identifier function in tgsi_text.c in the TGSI auxiliary module in the Gallium driver in virglrenderer before 0.6.0 allows local guest OS users to cause a denial of service (out-of-bounds array access and QEMU process crash) via vectors related to parsing properties.

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2023-03-07	1.03%	0.07%	-0.96%
2	2022-02-04	1.81%	1.03%	-0.77%
3	2021-04-14	—	1.81%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2023-03-07

1.03%

0.07%

-0.96%

2022-02-04

1.81%

1.03%

-0.77%

2021-04-14

—

1.81%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
6.5	3.0	MEDIUM	`CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H` Click to expand Attack vector (AV:L) They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by. Attack complexity (AC:L) Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup. Privileges required (PR:L) A normal user session is enough; they don’t have to be admin. User interaction (UI:N) Nobody has to click “OK” or open a trap file; it can work without a victim helping. Scope (S:C) Breaking this can reach past the original component and bite other resources—bigger blast radius. Confidentiality (C:N) Doesn’t really leak secrets in a meaningful way. Integrity (I:N) Data isn’t meaningfully altered or forged. Availability (A:H) Could take the service down hard or make it unusable for people who depend on it.	2.0	4.0	[email protected]
2.1	2.0	LOW	`AV:L/AC:L/Au:N/C:N/I:N/A:P` Click to expand Access vector (AV:L) Requires local access to the target system. Access complexity (AC:L) Exploitation conditions are straightforward and predictable. Authentication (AU:N) No authentication is required. Confidentiality impact (C:N) No confidentiality impact. Integrity impact (I:N) No integrity impact. Availability impact (A:P) Partial availability impact.	3.9	2.9	[email protected]

Base score

Version

Severity

Vector

Exploitability

Impact

Score source

6.5

3.0

MEDIUM

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H Click to expand

Attack vector (AV:L): They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L): Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L): A normal user session is enough; they don’t have to be admin.
User interaction (UI:N): Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:C): Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:N): Doesn’t really leak secrets in a meaningful way.
Integrity (I:N): Data isn’t meaningfully altered or forged.
Availability (A:H): Could take the service down hard or make it unusable for people who depend on it.

2.0

4.0

[email protected]

2.1

2.0

LOW

AV:L/AC:L/Au:N/C:N/I:N/A:P Click to expand

Access vector (AV:L): Requires local access to the target system.
Access complexity (AC:L): Exploitation conditions are straightforward and predictable.
Authentication (AU:N): No authentication is required.
Confidentiality impact (C:N): No confidentiality impact.
Integrity impact (I:N): No integrity impact.
Availability impact (A:P): Partial availability impact.

3.9

2.9

[email protected]

OS Trackers for CVE-2017-6209

vendor	priority	summary	link
`debian`	not yet assigned	CVE-2017-6209 not yet assigned priority: Debian including 1 source packages (virglrenderer), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5.	https://security-tracker.debian.org/tracker/CVE-2017-6209
`gentoo`	normal	CVE-2017-6209: 1 GLSA(s) (201707-06), 1 atom(s) (media-libs/virglrenderer); latest impact normal.	https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2017-6209
`suse`	low	CVE-2017-6209 severity low: SUSE including 2 source package names (libvirglrenderer0-0.5.0-11.1, virglrenderer-devel-0.5.0-11.1), 15 product×package rows across 15 product lines (SUSE Linux Enterprise Desktop 12 SP2, SUSE Linux Enterprise Desktop 12 SP3, … (15 product lines)): Fixed 15.	https://www.suse.com/security/cve/CVE-2017-6209/
`ubuntu`	medium	CVE-2017-6209 medium priority: Ubuntu including 1 source packages (virglrenderer), 9 status rows across 9 suites (artful, bionic, cosmic, precise, trusty, upstream, xenial, yakkety, zesty): DNE 3, ignored 3, not-affected 2, released 1.	https://ubuntu.com/security/CVE-2017-6209

Affected software / configurations for CVE-2017-6209

Vendor	Product	Version	Raw CPE
virglrenderer_project	virglrenderer	<= 0.5.0	cpe:2.3:a:virglrenderer_project:virglrenderer::::::::

References for CVE-2017-6209

URL	Tags
http://www.openwall.com/lists/oss-security/2017/02/23/20	Mailing List Patch
http://www.securityfocus.com/bid/96437	Third Party Advisory VDB Entry
https://bugzilla.redhat.com/show_bug.cgi?id=1426149	Issue Tracking Patch
https://cgit.freedesktop.org/virglrenderer/commit/?id=e534b51ca3c3cd25f3990589932a9ed711c59b27	Patch
https://lists.freedesktop.org/archives/virglrenderer-devel/2017-February/000145.html	Patch
https://security.gentoo.org/glsa/201707-06

URL

CVE-2017-6209

Exploit prediction scoring system (EPSS) score for CVE-2017-6209

Common vulnerability scoring system (CVSS) metrics for CVE-2017-6209

Weakness enumeration for CVE-2017-6209

OS Trackers for CVE-2017-6209

Affected software / configurations for CVE-2017-6209

References for CVE-2017-6209