Bug 2133453 (CVE-2022-40133) - CVE-2022-40133 kernel: vmwgfx: use-after-free in vmw_execbuf_tie_context
Summary: CVE-2022-40133 kernel: vmwgfx: use-after-free in vmw_execbuf_tie_context
Keywords:
Status: NEW
Alias: CVE-2022-40133
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Nobody
QA Contact:
URL:
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Depends On: 2133493 2133494 2133495 2133498 2133496
Blocks: 2126143
TreeView+ depends on / blocked
 
Reported: 2022-10-10 13:57 UTC by Mauro Matteo Cascella
Modified: 2023-07-07 08:32 UTC (History)
52 users (show)

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Doc Text:
A use-after-free vulnerability was found in the Linux kernel's vmwgfx driver in vmw_execbuf_tie_context. This flaw allows a local, unprivileged attacker with access to either /dev/dri/card0 or /dev/dri/rendererD128, who can issue an ioctl() on the resulting file descriptor, to crash the system, causing a denial of service.
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Description Mauro Matteo Cascella 2022-10-10 13:57:16 UTC 
A use-after-free vulnerability was found in the Linux kernel's vmwgfx driver in vmw_execbuf_tie_context. Systems making use of the vmwgfx driver are potentially affected by this flaw. Exploiting the bug would require an attacker to have access to either /dev/dri/card0 or /dev/dri/rendererD128 and be able to issue an ioctl() on the resulting file descriptor. Under certain circumstances a local unprivileged user could use this flaw to crash the system, causing a denial of service.

Reference:
https://bugzilla.openanolis.cn/show_bug.cgi?id=2075
Comment 1 Mauro Matteo Cascella 2022-10-10 15:33:23 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2133496]
Comment 8 Justin M. Forbes 2023-04-06 16:25:12 UTC 
This was fixed for Fedora with the 6.1 7 stable kernel update.
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