VulnerabilityPublished 23 Oct 2026

CVE-2026-98876: Linux kernel · host1x: bus: Fix missing ops null check in error teardown

Source GCVE Database

Authoritative record:CVE-2026-98876· Medium

Not known to be exploited · fixed in f1fa6c936fa9de80ae446ba5e76e227e991b8e56 : update Linux kernel when convenient.

Data as of 26 Oct 2026, 12:55 UTC

Severity

Medium

Rated by Threat Radar · CVSS not yet scored by NVD

EPSS: 0.1% chance of exploitation in 30 days – higher than 7% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in f1fa6c936fa9de80ae446ba5e76e227e991b8e56, d8d5b6e02fc281dea33d6b0b0fadaccea56f2067, 62851e7b0e55de6fe08da08bc41fd587fbcb0e9b +3

Exploitation evidence

Disclosed: evidence found.
CVE published 23 Oct 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.

ghsa-53g5-98c7-5cwc

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ 8f7da1578e90bf1af30269dc6dd8806c96e9c683, < f1fa6c936fa9de80ae446ba5e76e227e991b8e56	Fixed in f1fa6c936fa9de80ae446ba5e76e227e991b8e56
LinuxLinux	Affected ≥ 8f7da1578e90bf1af30269dc6dd8806c96e9c683, < d8d5b6e02fc281dea33d6b0b0fadaccea56f2067	Fixed in d8d5b6e02fc281dea33d6b0b0fadaccea56f2067
LinuxLinux	Affected ≥ 8f7da1578e90bf1af30269dc6dd8806c96e9c683, < 62851e7b0e55de6fe08da08bc41fd587fbcb0e9b	Fixed in 62851e7b0e55de6fe08da08bc41fd587fbcb0e9b
LinuxLinux	Affected ≥ 8f7da1578e90bf1af30269dc6dd8806c96e9c683, < 29375e071ea201fe97bafe1d2ad9d9f30311abfb	Fixed in 29375e071ea201fe97bafe1d2ad9d9f30311abfb
LinuxLinux	Affected ≥ 8f7da1578e90bf1af30269dc6dd8806c96e9c683, < 74bd1f05d9ba2d6672d30ccafe80a38104c1f73f	Fixed in 74bd1f05d9ba2d6672d30ccafe80a38104c1f73f
LinuxLinux	Affected ≥ 8f7da1578e90bf1af30269dc6dd8806c96e9c683, < 71d25f668bc5c0f36ea843462e12307dea45aaa3	Fixed in 71d25f668bc5c0f36ea843462e12307dea45aaa3

AI-suggested

A fix has been implemented to add the missing null check for client->ops in the error teardown paths. Users should apply the official Linux kernel update that includes this fix once available. Patch status is not explicitly confirmed in the provided data; check the vendor advisory for current remediation guidance.

Description

A vulnerability in the Linux kernel's host1x driver was fixed by adding a missing null check for client->ops during error teardown. Without this check, a NULL pointer dereference could occur if client->ops was NULL during teardown, potentially causing a kernel crash.

References

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