A heap-based buffer over-read vulnerability was found in the X.org server's ProcXIPassiveGrabDevice() function. This issue occurs when byte-swapped length values are used in replies, potentially leading to memory leakage and segmentation faults, particularly when triggered by a client with a different endianness. This vulnerability could be exploited by an attacker to cause the X server to read heap memory values and then transmit them back to the client until encountering an unmapped page, resulting in a crash. Despite the attacker's inability to control the specific memory copied into the replies, the small length values typically stored in a 32-bit integer can result in significant attempted out-of-bounds reads.
History

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cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published: 2024-04-04T13:48:12.848Z

Updated: 2024-09-16T18:43:04.693Z

Reserved: 2024-03-28T02:56:55.575Z

Link: CVE-2024-31081

cve-icon Vulnrichment

Updated: 2024-08-02T01:46:04.378Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2024-04-04T14:15:10.593

Modified: 2024-09-16T19:16:09.940

Link: CVE-2024-31081

cve-icon Redhat

Severity : Important

Publid Date: 2024-04-03T00:00:00Z

Links: CVE-2024-31081 - Bugzilla