Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.13, < 5.15.149 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/2df39ac8f813860f79782807c3f7acff40b3c551Mailing ListPatch
- https://git.kernel.org/stable/c/94991728c84f8df54fd9eec9b85855ef9057ea08Mailing ListPatch
- https://git.kernel.org/stable/c/a9ebfc405fe1be145f414eafadcbf09506082010Mailing ListPatch
- https://git.kernel.org/stable/c/ecf8320111822a1ae5d5fc512953eab46d543d0bMailing ListPatch
- https://git.kernel.org/stable/c/eff9704f5332a13b08fbdbe0f84059c9e7051d5fMailing ListPatch
- https://git.kernel.org/stable/c/2df39ac8f813860f79782807c3f7acff40b3c551Mailing ListPatch
- https://git.kernel.org/stable/c/94991728c84f8df54fd9eec9b85855ef9057ea08Mailing ListPatch
- https://git.kernel.org/stable/c/a9ebfc405fe1be145f414eafadcbf09506082010Mailing ListPatch
- https://git.kernel.org/stable/c/ecf8320111822a1ae5d5fc512953eab46d543d0bMailing ListPatch
- https://git.kernel.org/stable/c/eff9704f5332a13b08fbdbe0f84059c9e7051d5fMailing ListPatch
FAQ
What is CVE-2023-52494?
CVE-2023-52494 is a vulnerability with a CVSS score of 7.8 (HIGH). 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_p...
How severe is CVE-2023-52494?
CVE-2023-52494 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2023-52494?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.