CVE-2026-53385

In the Linux kernel, the following vulnerability has been resolved: vcscreen: fix null-ptr-deref in vcsnotifier during concurrent vcswrite A KASAN null-ptr-deref was observed in vcsnotifier: BUG: KASAN: null-ptr-deref in vcsnotifier+0x98/0x130 Read of size 2 at addr qmpcmdname: qmpcapabilities,...

CVE-2023-53747

CVE-2023-53747 affects the Linux kernel’s virtual terminal driver (vc_screen). The issue arises in vcs_write() where, after console_unlock(), the vc_data object may be freed by vc_port_destruct(), causing a Use-After-Free when vcs_size() is later invoked. The fix reloads the pointer to the vc_dat...

CVE-2023-52973

The CVE-2023-52973 issue affects the Linux kernel’s vc_screen path (vt/vc_screen.c). Root cause: a use-after-free of vc_data after console_unlock() in vcs_read(), where the vc_data pointer was loaded inside the loop, allowing a UAF in vcs_size(). The bug was fixed by moving the vc_data load to th...

kernel: vc_screen: move load of struct vc_data pointer in vcs_read() to avoid UAF

In the Linux kernel, the following vulnerability has been resolved: vcscreen: move load of struct vcdata pointer in vcsread to avoid UAF After a call to consoleunlock in vcsread the vcdata struct can be freed by vcdeallocate. Because of that, the struct vcdata pointer load must be done at the top...