In the Linux kernel, the following vulnerability has been resolved:
drm/vmwgfx: Prevent unmapping active read buffers
The kms paths keep a persistent map active to read and compare the cursor
buffer. These maps can race with each other in simple scenario where:
a) buffer "a" mapped for update
b) buffer "a" mapped for compare
c) do the compare
d) unmap "a" for compare
e) update the cursor
f) unmap "a" for update
At step "e" the buffer has been unmapped and the read contents is bogus.
Prevent unmapping of active read buffers by simply keeping a count of
how many paths have currently active maps and unmap only when the count
reaches 0.
Metrics
Affected Vendors & Products
References
History
Thu, 19 Sep 2024 13:30:00 +0000
Type | Values Removed | Values Added |
---|---|---|
First Time appeared |
Linux
Linux linux Kernel |
|
Weaknesses | NVD-CWE-noinfo | |
CPEs | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.11:rc1:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.11:rc2:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.11:rc3:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.11:rc4:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.11:rc5:*:*:*:*:*:* |
|
Vendors & Products |
Linux
Linux linux Kernel |
|
Metrics |
cvssV3_1
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cvssV3_1
|
Fri, 13 Sep 2024 23:30:00 +0000
Type | Values Removed | Values Added |
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References |
| |
Metrics |
threat_severity
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cvssV3_1
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Fri, 13 Sep 2024 06:45:00 +0000
Type | Values Removed | Values Added |
---|---|---|
Description | In the Linux kernel, the following vulnerability has been resolved: drm/vmwgfx: Prevent unmapping active read buffers The kms paths keep a persistent map active to read and compare the cursor buffer. These maps can race with each other in simple scenario where: a) buffer "a" mapped for update b) buffer "a" mapped for compare c) do the compare d) unmap "a" for compare e) update the cursor f) unmap "a" for update At step "e" the buffer has been unmapped and the read contents is bogus. Prevent unmapping of active read buffers by simply keeping a count of how many paths have currently active maps and unmap only when the count reaches 0. | |
Title | drm/vmwgfx: Prevent unmapping active read buffers | |
References |
|
MITRE
Status: PUBLISHED
Assigner: Linux
Published: 2024-09-13T06:33:42.285Z
Updated: 2024-09-15T17:58:10.257Z
Reserved: 2024-09-11T15:12:18.252Z
Link: CVE-2024-46710
Vulnrichment
No data.
NVD
Status : Analyzed
Published: 2024-09-13T07:15:05.880
Modified: 2024-09-19T13:14:58.650
Link: CVE-2024-46710
Redhat