VulnerabilityPublished 17 Sep 2026Updated 19 Oct 2026

CVE-2026-93061: Linux kernel · gpu: host1x: Avoid stack over-read in debug output helpers

Affects Linux kernelSource CVE Database V5

Not known to be exploited · fixed in ebab3a25a0403bcbc0c40ef77d69d23270e45547 : update Linux kernel when convenient.

Data as of 26 Oct 2026, 12:55 UTC

Severity

Unrated

Rated by Threat Radar · CVSS not yet scored by NVD

EPSS: 0.2% chance of exploitation in 30 days – higher than 11% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in ebab3a25a0403bcbc0c40ef77d69d23270e45547, d7a560dc912756fd8b39b28b10818d931e863d2d, bc17ac285fb708f22a8fa2c0ed32eceb1d37e6d6 +5

Exploitation evidence

Disclosed: evidence found.
CVE published 17 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: 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 26 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.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, 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.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ 6236451d83a720072053855fa63d51934024a707, < ebab3a25a0403bcbc0c40ef77d69d23270e45547	Fixed in ebab3a25a0403bcbc0c40ef77d69d23270e45547
LinuxLinux	Affected ≥ 6236451d83a720072053855fa63d51934024a707, < d7a560dc912756fd8b39b28b10818d931e863d2d	Fixed in d7a560dc912756fd8b39b28b10818d931e863d2d
LinuxLinux	Affected ≥ 6236451d83a720072053855fa63d51934024a707, < bc17ac285fb708f22a8fa2c0ed32eceb1d37e6d6	Fixed in bc17ac285fb708f22a8fa2c0ed32eceb1d37e6d6
LinuxLinux	Affected ≥ 6236451d83a720072053855fa63d51934024a707, < b00290d1dc23a5ef9a0d3103aad1fe2274e86569	Fixed in b00290d1dc23a5ef9a0d3103aad1fe2274e86569
LinuxLinux	Affected ≥ 6236451d83a720072053855fa63d51934024a707, < 41517c46002afd717f0f2d0975c740dd610f87fe	Fixed in 41517c46002afd717f0f2d0975c740dd610f87fe
LinuxLinux	Affected ≥ 6236451d83a720072053855fa63d51934024a707, < 819dd96a6571f2b12496b080e5187ba3fa897232	Fixed in 819dd96a6571f2b12496b080e5187ba3fa897232

Description

In the Linux kernel, the following vulnerability has been resolved: gpu: host1x: Avoid stack over-read in debug output helpers host1x_debug_output() and host1x_debug_cont() used vsnprintf(), which returns the length the formatted string would have reached with an unbounded buffer. That return value was passed straight to o->fn as the number of bytes to emit. This could cause a read past end of the output buffer if a call to host1x_debug_* produced a string longer than 256 bytes. This only affected the debugfs files as the printk debug sink ignores the number of bytes. In practice, this is very unlikely to occur. Fix by switching to vscnprintf(), which returns the number of bytes actually written.

References

Community reviews

Loading reviews…