VulnerabilityPublished 15 Aug 2026Updated 30 Oct 2026

CVE-2026-74445: Linux kernel · drm/vmwgfx: reject DX_BIND_QUERY without a DX context

Source GCVE Database

Compare

Authoritative record:CVE-2026-74445· Medium

Not known to be exploited · fixed in e479240a1e076ba1104236331abd62400bf1d495 : update Linux kernel when convenient.

Data as of 30 Oct 2026, 19:33 UTC

Severity

Medium

Rated Medium by Threat Radar's AI analysis · CVSS not yet scored by NVD

Thin evidence

One scorer or none

Patch: Available – fixed in e479240a1e076ba1104236331abd62400bf1d495, 0634d50e8b398c25bd07c96b048e484d22688c26, 55ec09c9ce10b1272802c7ab6c1be2ea0dbc68db +3

Exploitation evidence

Disclosed: evidence found.
CVE published 15 Aug 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

ghsa-gvh6-m2h2-g86v

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ 9c079b8ce8bf8e0394149eb39c78b04285644bcc, < e479240a1e076ba1104236331abd62400bf1d495	Fixed in e479240a1e076ba1104236331abd62400bf1d495
LinuxLinux	Affected ≥ 9c079b8ce8bf8e0394149eb39c78b04285644bcc, < 0634d50e8b398c25bd07c96b048e484d22688c26	Fixed in 0634d50e8b398c25bd07c96b048e484d22688c26
LinuxLinux	Affected ≥ 9c079b8ce8bf8e0394149eb39c78b04285644bcc, < 55ec09c9ce10b1272802c7ab6c1be2ea0dbc68db	Fixed in 55ec09c9ce10b1272802c7ab6c1be2ea0dbc68db
LinuxLinux	Affected ≥ 9c079b8ce8bf8e0394149eb39c78b04285644bcc, < 7eae011829f94a76470ec76f016805f508437755	Fixed in 7eae011829f94a76470ec76f016805f508437755
LinuxLinux	Affected ≥ 9c079b8ce8bf8e0394149eb39c78b04285644bcc, < 6b1eb0b63cc153e1c0cb5ab8350950119be11947	Fixed in 6b1eb0b63cc153e1c0cb5ab8350950119be11947
LinuxLinux	Affected ≥ 9c079b8ce8bf8e0394149eb39c78b04285644bcc, < 6af8f0571b4f07e9b102641f195e0ae3cd3a6c71	Fixed in 6af8f0571b4f07e9b102641f195e0ae3cd3a6c71

AI-suggested

A fix has been implemented to reject DX_BIND_QUERY commands without a valid DX context by returning -EINVAL before any state changes occur. Users should apply the updated Linux kernel version containing this fix once available. No other mitigation steps are specified or required.

Description

A vulnerability in the Linux kernel's vmwgfx driver allows a NULL pointer dereference when handling DX_BIND_QUERY commands without a valid DirectX context. This occurs because the function vmw_cmd_dx_bind_query() dereferences a NULL pointer if the dx_context_handle is invalid, leading to a kernel oops. The issue is resolved by rejecting such commands early with an error code.

Impact

This vulnerability can cause a denial of service by crashing the kernel (kernel oops) when a crafted command stream is submitted via any render-node file descriptor. There is no indication of privilege escalation or code execution from the provided data.

Summary

The Linux kernel vmwgfx driver had a flaw where vmw_cmd_dx_bind_query() would unconditionally dereference sw_context->dx_ctx_node->ctx. If userspace submits an execbuf with dx_context_handle set to SVGA3D_INVALID_ID and a SVGA_3D_CMD_DX_BIND_QUERY opcode, dx_ctx_node remains NULL, causing a NULL pointer dereference and kernel oops. Other DX handlers fail-close on missing dx_ctx_node, but this handler did not. The fix involves returning -EINVAL early to prevent dereferencing NULL pointers.

References

Community reviews

Loading reviews…