In the Linux kernel, the following vulnerability has been resolved:
drm/vmwgfx: Remove rcu locks from user resources
User resource lookups used rcu to avoid two extra atomics. Unfortunately
the rcu paths were buggy and it was easy to make the driver crash by
submitting command buffers from two different threads. Because the
lookups never show up in performance profiles replace them with a
regular spin lock which fixes the races in accesses to those shared
resources.
Fixes kernel oops’es in IGT’s vmwgfx execution_buffer stress test and
seen crashes with apps using shared resources.
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
ubuntu | 20.04 | noarch | linux | < any | UNKNOWN |
ubuntu | 22.04 | noarch | linux | < any | UNKNOWN |
ubuntu | 20.04 | noarch | linux-aws | < any | UNKNOWN |
ubuntu | 22.04 | noarch | linux-aws | < any | UNKNOWN |
ubuntu | 20.04 | noarch | linux-aws-5.15 | < any | UNKNOWN |
ubuntu | 20.04 | noarch | linux-azure | < any | UNKNOWN |
ubuntu | 22.04 | noarch | linux-azure | < any | UNKNOWN |
ubuntu | 20.04 | noarch | linux-azure-5.15 | < any | UNKNOWN |
ubuntu | 22.04 | noarch | linux-azure-fde | < any | UNKNOWN |
ubuntu | 20.04 | noarch | linux-azure-fde-5.15 | < any | UNKNOWN |
git.kernel.org/linus/a309c7194e8a2f8bd4539b9449917913f6c2cd50 (6.2-rc4)
git.kernel.org/stable/c/7ac9578e45b20e3f3c0c8eb71f5417a499a7226a
git.kernel.org/stable/c/a309c7194e8a2f8bd4539b9449917913f6c2cd50
launchpad.net/bugs/cve/CVE-2022-48887
nvd.nist.gov/vuln/detail/CVE-2022-48887
security-tracker.debian.org/tracker/CVE-2022-48887
www.cve.org/CVERecord?id=CVE-2022-48887