What’s Vulnerable › Vulnerabilities

CVE-2026-89597: fbdev: uvesafb: unregister connector callback on init failure

• Severity: high (CVSS 7.8 v3.1)
• 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: 2026-09-11 · updated 2026-10-19

Description

In the Linux kernel, the following vulnerability has been resolved: fbdev: uvesafb: unregister connector callback on init failure uvesafb_init() registers the v86d connector callback before registering the platform driver. If platform_driver_register() fails, the function returns the error directly and leaves the connector callback registered. The later platform-device failure path already unregisters the callback. Add the same cleanup before the final return when platform-driver registration fails. This issue was identified during our ongoing static-analysis research while reviewing kernel code.

Affected products

• Linux kernel: 2.6.24 — fixed in 7.3

How to fix

Upgrade to a fixed version: Linux kernel 7.3. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/0352fdac3cbf11e3b323322ff8cd95e20cbf5cd7
• https://git.kernel.org/stable/c/17518e7123f7ef01b1155064dc01f2087583908e
• https://git.kernel.org/stable/c/466a8af0dee2cf745307155e26884e19a37b7e15
• https://git.kernel.org/stable/c/9e768ae51426af2034d479133cfd73010d641b1a
• https://git.kernel.org/stable/c/9eb7b3cbe99c9c0edbff69eb155c723e30983c22
• https://git.kernel.org/stable/c/9f8a822b44c42502f105cf6574f4867067eecdd0
• https://git.kernel.org/stable/c/b149f77d04082a9da75944cdc488becb0e35258f
• https://git.kernel.org/stable/c/de8db23aa7c337e606fca9faf48b3ba72968597a

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