Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: io_uring/kbuf: hold io_buffer_list reference over mmap If we look up the kbuf, ensure that it doesn't get unregistered until after we're done with it. Since we're inside mmap, we cannot safely use the io_uring lock. Rely on the fact that we can lookup the buffer list under RCU now and grab a reference to it, preventing it from being unregistered until we're done with it. The lookup returns the io_buffer_list directly with it referenced.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 6.6.5, < 6.6.26 |
References
- https://git.kernel.org/stable/c/561e4f9451d65fc2f7eef564e0064373e3019793Patch
- https://git.kernel.org/stable/c/5fd8e2359498043e0b5329a05f02d10a9eb91eb9Patch
- https://git.kernel.org/stable/c/65938e81df2197203bda4b9a0c477e7987218d66Patch
- https://git.kernel.org/stable/c/561e4f9451d65fc2f7eef564e0064373e3019793Patch
- https://git.kernel.org/stable/c/5fd8e2359498043e0b5329a05f02d10a9eb91eb9Patch
- https://git.kernel.org/stable/c/65938e81df2197203bda4b9a0c477e7987218d66Patch
FAQ
What is CVE-2024-35880?
CVE-2024-35880 is a vulnerability with a CVSS score of 5.5 (MEDIUM). In the Linux kernel, the following vulnerability has been resolved: io_uring/kbuf: hold io_buffer_list reference over mmap If we look up the kbuf, ensure that it doesn't get unregistered until after...
How severe is CVE-2024-35880?
CVE-2024-35880 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2024-35880?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.