CVE-2024-26984 nouveau: fix instmem race condition around ptr stores

In the Linux kernel, the following vulnerability has been resolved: nouveau: fix instmem race condition around ptr stores Running a lot of VK CTS in parallel against nouveau, once every few hours you might see something like this crash. BUG: kernel NULL pointer dereference, address:...

CVE-2024-26984 nouveau: fix instmem race condition around ptr stores

In the Linux kernel, the following vulnerability has been resolved: nouveau: fix instmem race condition around ptr stores Running a lot of VK CTS in parallel against nouveau, once every few hours you might see something like this crash. BUG: kernel NULL pointer dereference, address:...

CVE-2024-26984

CVE-2024-26984 is a Linux kernel issue affecting the nouveau GPU driver where a race around pointer stores in instmem (ptrs) can yield a NULL pointer dereference under contention. The root cause is a race between nv50_instobj_acquire/refcount_set and concurrent refcount_inc_not_zero, which may le...