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

• Severity: unknown
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-23 · updated 2026-10-26

Description

In the Linux kernel, the following vulnerability has been resolved: host1x: bus: Fix missing ops null check in error teardown In host1x_device_init(), the error teardown paths do not check client->ops before dereferencing it, unlike the forward init paths which correctly guard with 'client->ops &&'. This can result in a NULL pointer dereference if client->ops is NULL. Fix by adding the missing client->ops check in both the teardown and teardown_late labels.

Affected products

• Linux kernel: before 5.15.222; before 6.1.189; before 6.6.158; before 6.12.111; before 6.18.53 — fixed in 5.15.222, 6.1.189, 6.12.111, 6.18.53, 6.6.158, 7.2

How to fix

Upgrade to a fixed version: Linux kernel 5.15.222, 6.1.189, 6.12.111, 6.18.53. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/29375e071ea201fe97bafe1d2ad9d9f30311abfb
• https://git.kernel.org/stable/c/62851e7b0e55de6fe08da08bc41fd587fbcb0e9b
• https://git.kernel.org/stable/c/71d25f668bc5c0f36ea843462e12307dea45aaa3
• https://git.kernel.org/stable/c/74bd1f05d9ba2d6672d30ccafe80a38104c1f73f
• https://git.kernel.org/stable/c/d8d5b6e02fc281dea33d6b0b0fadaccea56f2067
• https://git.kernel.org/stable/c/f1fa6c936fa9de80ae446ba5e76e227e991b8e56

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