CVE-2026-89888 Affecting linux-6.12 package, versions <6.12.111-1~deb12u1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-DEBIAN12-LINUX612-20506655
- published5 Oct 2026
- disclosed16 Sept 2026
Introduced: 16 Sep 2026
NewCVE-2026-89888 (opens in a new tab)How to fix?
Upgrade Debian:12 linux-6.12 to version 6.12.111-1~deb12u1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream linux-6.12 package and not the linux-6.12 package as distributed by Debian.
See How to fix? for Debian:12 relevant fixed versions and status.
In the Linux kernel, the following vulnerability has been resolved:
media: i2c: ov02a10: fix endpoint parsing use-after-free
The ov02a10_check_hwcfg() function calls fwnode_handle_put(ep) immediately after allocating and parsing the endpoint. However, it subsequently calls fwnode_property_read_u32() using the same 'ep' handle, leading to a potential use-after-free.
Additionally, reading the optional 'ovti,mipi-clock-voltage' property used to overwrite the 'ret' variable. If the property was missing, 'ret' would become negative, and this failure code would be incorrectly returned at the end of the function, causing probe to fail entirely.
Fix the use-after-free by moving fwnode_property_read_u32() before the endpoint is parsed and freed. Avoid the error leak by not assigning the result of fwnode_property_read_u32() to 'ret'.
References
- https://security-tracker.debian.org/tracker/CVE-2026-89888
- https://git.kernel.org/stable/c/213b2489130357c8d3e8d4fb2bdab88791ce3185
- https://git.kernel.org/stable/c/4c2988bf1ad2753240a38db10ce23e87ec542f8f
- https://git.kernel.org/stable/c/6e13784452785cd8402b228bea53bc6a027ade84
- https://git.kernel.org/stable/c/8ddb3b69f67b0632ff3830da18de3e8dcaf5884b
- https://git.kernel.org/stable/c/90f9b421fc6d4f2edab7521efdb1e58571468d33
- https://git.kernel.org/stable/c/94971ba0592ca77ec99b292226a4b398763315b8
- https://git.kernel.org/stable/c/9de48ba68f56de9fe20ebd3f9728d22af25f9a91