CVE-2026-90122

Summary

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 Software

VendorProductVersion RangeStatus
LinuxLinuxb4cbe606dc3674b25cb661e7cd1a1c6ddaaafaaa < 0e97c22b286e1918c6f48bad7e77fb8240a24b4aaffected
LinuxLinuxb4cbe606dc3674b25cb661e7cd1a1c6ddaaafaaa < 9f756f1965bad65e6066608f33c36988cd10302aaffected
LinuxLinuxb4cbe606dc3674b25cb661e7cd1a1c6ddaaafaaa < 1cc0539e5b0906bace15d3fc7347b344a017cc02affected
LinuxLinuxb4cbe606dc3674b25cb661e7cd1a1c6ddaaafaaa < 8f7980033e9f7ecaaecd873a0b5bf6b6c87d7e5aaffected
LinuxLinuxb4cbe606dc3674b25cb661e7cd1a1c6ddaaafaaa < 5ecfa72e74c6e2a765fa5bc1da574e5beae588f2affected
LinuxLinuxb4cbe606dc3674b25cb661e7cd1a1c6ddaaafaaa < 39c0e6c844a14945040cca4ccf6997792ab764c4affected
LinuxLinux5.17affected
LinuxLinux0 < 5.17unaffected
LinuxLinux6.1.188 <= 6.1.*unaffected
LinuxLinux6.6.157 <= 6.6.*unaffected
LinuxLinux6.12.110 <= 6.12.*unaffected
LinuxLinux6.18.52 <= 6.18.*unaffected
LinuxLinux7.2.6 <= 7.2.*unaffected
LinuxLinux7.3-rc1 <= *unaffected

Weaknesses

References