CVE-2023-52494

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: bus: mhi: host: Add alignment check for event ring read pointer Though we do check the event ring read pointer by "is_valid_ring_ptr" to make sure it is in the buffer range, but there is another risk the pointer may be not aligned. Since we are expecting event ring elements are 128 bits(struct mhi_ring_element) aligned, an unaligned read pointer could lead to multiple issues like DoS or ring buffer memory corruption. So add a alignment check for event ring read pointer.

Affected product and versions

Product

Linux Linux, linux kernel

Affected versions

>= a1d2bd164c1c78f87968b7883964175ec41c32ae < 76ed0c6f6418cec6efe6f65a0b91f84be80b72eb, >= ec32332df7645e0ba463a08d483fe97665167071 < 94991728c84f8df54fd9eec9b85855ef9057ea08, >= ec32332df7645e0ba463a08d483fe97665167071 < 2df39ac8f813860f79782807c3f7acff40b3c551, >= ec32332df7645e0ba463a08d483fe97665167071 < a9ebfc405fe1be145f414eafadcbf09506082010, >= ec32332df7645e0ba463a08d483fe97665167071 < ecf8320111822a1ae5d5fc512953eab46d543d0b, >= ec32332df7645e0ba463a08d483fe97665167071 < eff9704f5332a13b08fbdbe0f84059c9e7051d5f, >= fd5f40fc887485a8b9a6806a640a0d8e0ef1afb6, >= 76879a980cd5ede4cb9a638999fb80d37bc09db5, >= 5.10.36 < 5.10.261, >= 5.11.20 < 5.12, >= 5.12.3 < 5.13, >= 5.13, >= 5.13 < 5.15.149, >= 5.16 < 6.1.76, >= 6.2 < 6.6.15, >= 6.7 < 6.7.3

Fixed versions

5.15.149, 6.1.76, 6.6.15, 6.7.3

Technical data

CVSS vector

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

CWE

CWE-787