CVE-2023-52494

Published: March 13, 2024Last modified: March 13, 2024

Description

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.

Severity score breakdown

Status

References

• https://git.kernel.org/stable/c/2df39ac8f813860f79782807c3f7acff40b3c551
• https://git.kernel.org/stable/c/94991728c84f8df54fd9eec9b85855ef9057ea08
• https://git.kernel.org/stable/c/a9ebfc405fe1be145f414eafadcbf09506082010
• https://git.kernel.org/stable/c/ecf8320111822a1ae5d5fc512953eab46d543d0b
• https://git.kernel.org/stable/c/eff9704f5332a13b08fbdbe0f84059c9e7051d5f