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PUBLISHED

CVE-2024-27027

dpll: fix dpll_xa_ref_*_del() for multiple registrations

Reserved:2024-02-19
Published:2024-05-01
Updated:2024-05-13

Description

In the Linux kernel, the following vulnerability has been resolved: dpll: fix dpll_xa_ref_*_del() for multiple registrations Currently, if there are multiple registrations of the same pin on the same dpll device, following warnings are observed: WARNING: CPU: 5 PID: 2212 at drivers/dpll/dpll_core.c:143 dpll_xa_ref_pin_del.isra.0+0x21e/0x230 WARNING: CPU: 5 PID: 2212 at drivers/dpll/dpll_core.c:223 __dpll_pin_unregister+0x2b3/0x2c0 The problem is, that in both dpll_xa_ref_dpll_del() and dpll_xa_ref_pin_del() registration is only removed from list in case the reference count drops to zero. That is wrong, the registration has to be removed always. To fix this, remove the registration from the list and free it unconditionally, instead of doing it only when the ref reference counter reaches zero.

Product status

Default status
unaffected

9431063ad323 before 769324eb3514
affected

9431063ad323 before b27e32e9367d
affected

9431063ad323 before b446631f355e
affected

Default status
affected

6.7
affected

Any version before 6.7
unaffected

6.7.11
unaffected

6.8.2
unaffected

6.9
unaffected

References

https://git.kernel.org/stable/c/769324eb35143462542cdb15483cdaf4877bf661

https://git.kernel.org/stable/c/b27e32e9367dac024cd6f61f22655714f483fd67

https://git.kernel.org/stable/c/b446631f355ece73b13c311dd712c47381a23172

cve.org CVE-2024-27027

nvd.nist.gov CVE-2024-27027

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