CVE-2024-27027
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:…
Does this matter?
Lower severity and a low EPSS score (0.26%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.26% probability · 18th percentile
- CISA KEV
- Not listed
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/769324eb35143462542cdb15483cdaf4877bf661Patch
- https://git.kernel.org/stable/c/b27e32e9367dac024cd6f61f22655714f483fd67Patch
- https://git.kernel.org/stable/c/b446631f355ece73b13c311dd712c47381a23172Patch
- https://git.kernel.org/stable/c/769324eb35143462542cdb15483cdaf4877bf661Patch
- https://git.kernel.org/stable/c/b27e32e9367dac024cd6f61f22655714f483fd67Patch
- https://git.kernel.org/stable/c/b446631f355ece73b13c311dd712c47381a23172Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.