CVE-2023-52494
HighCVSS 7.8Exploitation Probability (EPSS)
Low risk20th percentile - higher than 20% of all known CVEs
Summary
In the Linux kernel, an alignment check was added for the event ring read pointer in the MHI host driver. Lack of alignment could lead to DoS or ring buffer memory corruption.
Risk Assessment
An attacker could exploit an unaligned pointer to cause denial of service (DoS) or memory corruption, potentially destabilizing the system.
Recommendation
Apply the Linux kernel patch that adds alignment checking for the event ring read pointer in the MHI host driver.
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Original NVD description (English source)
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.