Bug 2133452 (CVE-2022-38096) - CVE-2022-38096 kernel: vmwgfx: NULL pointer dereference in vmw_cmd_dx_define_query
Summary: CVE-2022-38096 kernel: vmwgfx: NULL pointer dereference in vmw_cmd_dx_define_...
Keywords:
Status: NEW
Alias: CVE-2022-38096
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: 2133485 2133487 2133488 2133489 2133486
Blocks: 2126143
TreeView+ depends on / blocked
 
Reported: 2022-10-10 13:52 UTC by Mauro Matteo Cascella
Modified: 2023-07-07 08:32 UTC (History)
52 users (show)

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A NULL pointer dereference issue was found in the Linux kernel's vmwgfx driver in vmw_cmd_dx_define_query. 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 13:52:58 UTC 
A NULL pointer dereference issue was found in the Linux kernel's vmwgfx driver in vmw_cmd_dx_define_query. 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=2073
Comment 1 Mauro Matteo Cascella 2022-10-10 15:28:58 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2133486]
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