CVE-2024-50096

nouveau/dmem: Fix vulnerability in migrate_to_ram upon copy error

State: Published
Severity: 7.3 High
Published: Nov 5, 2024
Updated: Aug 5, 2026
Reserved: Oct 21, 2024

Description

In the Linux kernel, the following vulnerability has been resolved:

nouveau/dmem: Fix vulnerability in migrate_to_ram upon copy error

The `nouveau_dmem_copy_one` function ensures that the copy push command is sent to the device firmware but does not track whether it was executed successfully.

In the case of a copy error (e.g., firmware or hardware failure), the copy push command will be sent via the firmware channel, and `nouveau_dmem_copy_one` will likely report success, leading to the `migrate_to_ram` function returning a dirty HIGH_USER page to the user.

This can result in a security vulnerability, as a HIGH_USER page that may contain sensitive or corrupted data could be returned to the user.

To prevent this vulnerability, we allocate a zero page. Thus, in case of an error, a non-dirty (zero) page will be returned to the user.

Scores

CVSS	Score	Vector	Source
3.1	7.3 High	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L	Linux
3.1	5.5 Medium	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N	CISA-ADP

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	5be73b690875f7eb2d2defb54ccd7f2f12074984 to before fd9bb7e996bab9b9049fffe3f3d3b50dee191d27Affected 5be73b690875f7eb2d2defb54ccd7f2f12074984 to before 73f75d2b5aee5a735cf64b8ab4543d5c20dbbdd9Affected 5be73b690875f7eb2d2defb54ccd7f2f12074984 to before 8c3de9282dde21ce3c1bf1bde3166a4510547aa9Affected 5be73b690875f7eb2d2defb54ccd7f2f12074984 to before 614bfb2050982d23d53d0d51c4079dba0437c883Affected 5be73b690875f7eb2d2defb54ccd7f2f12074984 to before 697e3ddcf1f8b68bd531fc34eead27c000bdf3e1Affected 5be73b690875f7eb2d2defb54ccd7f2f12074984 to before ab4d113b6718b076046018292f821d5aa4b844f8Affected 5be73b690875f7eb2d2defb54ccd7f2f12074984 to before 835745a377a4519decd1a36d6b926e369b3033e2Affected
LinuxLinux	5.1Affected before 5.1Not affected 5.4.285 through 5.4.Not affected 5.10.227 through 5.10.Not affected 5.15.168 through 5.15.Not affected 6.1.113 through 6.1.Not affected 6.6.57 through 6.6.Not affected 6.11.4 through 6.11.Not affected 6.12 and laterNot affected

Product

Versions

LinuxLinux

5be73b690875f7eb2d2defb54ccd7f2f12074984 to before fd9bb7e996bab9b9049fffe3f3d3b50dee191d27Affected
5be73b690875f7eb2d2defb54ccd7f2f12074984 to before 73f75d2b5aee5a735cf64b8ab4543d5c20dbbdd9Affected
5be73b690875f7eb2d2defb54ccd7f2f12074984 to before 8c3de9282dde21ce3c1bf1bde3166a4510547aa9Affected
5be73b690875f7eb2d2defb54ccd7f2f12074984 to before 614bfb2050982d23d53d0d51c4079dba0437c883Affected
5be73b690875f7eb2d2defb54ccd7f2f12074984 to before 697e3ddcf1f8b68bd531fc34eead27c000bdf3e1Affected
5be73b690875f7eb2d2defb54ccd7f2f12074984 to before ab4d113b6718b076046018292f821d5aa4b844f8Affected
5be73b690875f7eb2d2defb54ccd7f2f12074984 to before 835745a377a4519decd1a36d6b926e369b3033e2Affected

LinuxLinux

5.1Affected
before 5.1Not affected
5.4.285 through 5.4.*Not affected
5.10.227 through 5.10.*Not affected
5.15.168 through 5.15.*Not affected
6.1.113 through 6.1.*Not affected
6.6.57 through 6.6.*Not affected
6.11.4 through 6.11.*Not affected
6.12 and laterNot affected

References

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