SecuriTricks - CVE-2024-46710

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.

Product(s) Impacted

Vendor	Product	Versions
Linux	Linux Kernel	*, 6.11

Weaknesses

Common security weaknesses mapped to this vulnerability.

*CPE(s)

Affected systems and software identified for this CVE.

Type	Vendor	Product	Version	Update	Edition	Language	Software Edition	Target Software	Target Hardware	Other Information
o	linux	linux_kernel	/	/	/	/	/	/	/	/
o	linux	linux_kernel	6.11	rc1	/	/	/	/	/	/
o	linux	linux_kernel	6.11	rc2	/	/	/	/	/	/
o	linux	linux_kernel	6.11	rc3	/	/	/	/	/	/
o	linux	linux_kernel	6.11	rc4	/	/	/	/	/	/
o	linux	linux_kernel	6.11	rc5	/	/	/	/	/	/

References

https://git.kernel.org/stable/c/0851b1ec650adadcaa23ec96daad95a55bf966f0

https://git.kernel.org/stable/c/aba07b9a0587f50e5d3346eaa19019cf3f86c0ea

https://git.kernel.org/stable/c/d5228d158e4c0b1663b3983044913c15c3d0135e

CVSS Score

4.7 / 10

CVSS Data - 3.1

Attack Vector: LOCAL
Attack Complexity: HIGH
Privileges Required: LOW
Scope: UNCHANGED
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: HIGH

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

View Vector String

Timeline

Published: Sept. 13, 2024, 7:15 a.m.
Last Modified: Oct. 4, 2024, 4:15 p.m.

Status : Modified

CVE has been recently published to the CVE List and has been received by the NVD.

More info

Source

416baaa9-dc9f-4396-8d5f-8c081fb06d67

CVE-2024-46710