CVE-2024-27043: Linux Kernel

High severity, CVSS 7.8. EPSS: 0.3% chance of exploitation in the next 30 days.

In the Linux kernel, the following vulnerability has been resolved: media: edia: dvbdev: fix a use-after-free In dvb_register_device, *pdvbdev is set equal to dvbdev, which is freed in several error-handling paths. However, *pdvbdev is not set to NULL after dvbdev's deallocation, causing use-after-frees in many places, for example, in the following call chain: budget_register |-> dvb_dmxdev_init |-> dvb_register_device |-> dvb_dmxdev_release |-> dvb_unregister_device |-> dvb_remove_device |-> dvb_device_put |-> kref_put When calling dvb_unregister_device, dmxdev->dvbdev (i.e. *pdvbdev in dvb_register_device) could point to memory that had been freed in dvb_register_device. Thereafter, this pointer is transferred to kref_put and triggering a use-after-free.

Affected products

• Linux Linux Kernel: from 2.6.21, before 4.19.311 (fixed in 4.19.311); from 4.20, before 5.4.273 (fixed in 5.4.273); from 5.5, before 5.10.214 (fixed in 5.10.214); from 5.11, before 5.15.153 (fixed in 5.15.153); from 5.16, before 6.1.83 (fixed in 6.1.83); from 6.2, before 6.6.23 (fixed in 6.6.23); …

Published 2024-05-01. Last modified 2026-08-04.