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THREATINT
PUBLISHED

CVE-2024-27027

dpll: fix dpll_xa_ref_*_del() for multiple registrations



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.

Reserved 2024-02-19 | Published 2024-05-01 | Updated 2024-12-19 | Assigner Linux

Product status

Default status
unaffected

9431063ad323ac864750aeba4d304389bc42ca4e before 769324eb35143462542cdb15483cdaf4877bf661
affected

9431063ad323ac864750aeba4d304389bc42ca4e before b27e32e9367dac024cd6f61f22655714f483fd67
affected

9431063ad323ac864750aeba4d304389bc42ca4e before b446631f355ece73b13c311dd712c47381a23172
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

git.kernel.org/...c/769324eb35143462542cdb15483cdaf4877bf661

git.kernel.org/...c/b27e32e9367dac024cd6f61f22655714f483fd67

git.kernel.org/...c/b446631f355ece73b13c311dd712c47381a23172

cve.org (CVE-2024-27027)

nvd.nist.gov (CVE-2024-27027)

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