oss-sec mailing list archives
Re: CVE-2022-1419: Linux kernel: A concurrency use-after-free in vgem_gem_dumb_create
From: Marcus Meissner <meissner () suse de>
Date: Fri, 22 Apr 2022 09:05:50 +0200
On Thu, Apr 21, 2022 at 07:35:46PM +0200, Greg KH wrote:
On Thu, Apr 21, 2022 at 11:44:54PM +0800, Minh Yuan wrote:Timeline: * 21.04.22 - Vulnerability reported to security () kernel org and linux-distros () vs openwall org * 21.04.22 - CVE-2022-1419 assigned.Why are people assigning CVEs to things that require root permissions? Or are there distros running on kernels older than 5.4 that allow untrusted users access to the drm ioctls directly? I'm curious as it would affect the backporting of the needed fixes here (or not.)
It does not, distros like SUSE give out ACLs or groups write perms to /dev/dri/card0 to it via udev. crw-rw----+ 1 root video 226, 0 Apr 22 08:47 /dev/dri/card0 getfacl /dev/dri/card0 # file: dev/dri/card0 # owner: root # group: video user::rw- user:marcus:rw- group::rw- mask::rw- other::--- Ciao, Marcus
Current thread:
- CVE-2022-1419: Linux kernel: A concurrency use-after-free in vgem_gem_dumb_create Minh Yuan (Apr 21)
- Re: CVE-2022-1419: Linux kernel: A concurrency use-after-free in vgem_gem_dumb_create Greg KH (Apr 21)
- Re: CVE-2022-1419: Linux kernel: A concurrency use-after-free in vgem_gem_dumb_create Marcus Meissner (Apr 22)
- Re: CVE-2022-1419: Linux kernel: A concurrency use-after-free in vgem_gem_dumb_create Greg KH (Apr 21)