CVE-2022-50454

Summary

In the Linux kernel, the following vulnerability has been resolved:

drm/nouveau: fix a use-after-free in nouveau_gem_prime_import_sg_table()

nouveau_bo_init() is backed by ttm_bo_init() and ferries its return code back to the caller. On failures, ttm will call nouveau_bo_del_ttm() and free the memory.Thus, when nouveau_bo_init() returns an error, the gem object has already been released. Then the call to nouveau_bo_ref() will use the freed "nvbo->bo" and lead to a use-after-free bug.

We should delete the call to nouveau_bo_ref() to avoid the use-after-free.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux019cbd4a4feb3aa3a917d78e7110e3011bbff6d5 < 56ee9577915dc06f55309901012a9ef68dbdb5a8affected
LinuxLinux019cbd4a4feb3aa3a917d78e7110e3011bbff6d5 < 5d6093c49c098d86c7b136aba9922df44aeb6944affected
LinuxLinux019cbd4a4feb3aa3a917d78e7110e3011bbff6d5 < 861f085f81fd569b02cc2c11165a9e6cca144424affected
LinuxLinux019cbd4a4feb3aa3a917d78e7110e3011bbff6d5 < 3aeda2fe6517cc52663d4ce3588dd43f0d4124a7affected
LinuxLinux019cbd4a4feb3aa3a917d78e7110e3011bbff6d5 < 7d80473e9f12548ac05b36af4fb9ce80f2f73509affected
LinuxLinux019cbd4a4feb3aa3a917d78e7110e3011bbff6d5 < 540dfd188ea2940582841c1c220bd035a7db0e51affected
LinuxLinux5.4affected
LinuxLinux0 < 5.4unaffected
LinuxLinux5.4.220 <= 5.4.*unaffected
LinuxLinux5.10.150 <= 5.10.*unaffected
LinuxLinux5.15.75 <= 5.15.*unaffected
LinuxLinux5.19.17 <= 5.19.*unaffected
LinuxLinux6.0.3 <= 6.0.*unaffected
LinuxLinux6.1 <= *unaffected

Weaknesses

References