What’s Vulnerable › Vulnerabilities

CVE-2026-90122: clk: visconti: Make sure clk_init_data is fully initialized

• 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: 2026-09-17 · updated 2026-10-19

Description

In the Linux kernel, the following vulnerability has been resolved: clk: visconti: Make sure clk_init_data is fully initialized The clk_init_data structure contains several mutually-exclusive members for different methods to specify the possible parents of a clock, prompting drivers to initialize only the members they need. However, not initializing all members may cause subtle issues, which are only exposed when CONFIG_INIT_STACK_ALL_PATTERN or CONFIG_INIT_STACK_NONE is enabled. visconti_clk_register_gate() fills in init.parent_data, and assumes that init.parent_names is NULL. However, the latter in uninitialized, and thus may cause a crash. Make sure all members are fully initialized, to fix such bugs, and to avoid future breakage when converting drivers to a different method for specifying the parents.

Affected products

• Linux kernel: 5.17 — 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/0e97c22b286e1918c6f48bad7e77fb8240a24b4a
• https://git.kernel.org/stable/c/1cc0539e5b0906bace15d3fc7347b344a017cc02
• https://git.kernel.org/stable/c/39c0e6c844a14945040cca4ccf6997792ab764c4
• https://git.kernel.org/stable/c/5ecfa72e74c6e2a765fa5bc1da574e5beae588f2
• https://git.kernel.org/stable/c/8f7980033e9f7ecaaecd873a0b5bf6b6c87d7e5a
• https://git.kernel.org/stable/c/9f756f1965bad65e6066608f33c36988cd10302a

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