In the Linux kernel, the following vulnerability has been resolved:
riscv/purgatory: align riscv_kernel_entry
When alignment handling is delegated to the kernel, everything must be
word-aligned in purgatory, since the trap handler is then set to the
kexec one. Without the alignment, hitting the exception would
ultimately crash. On other occasions, the kernel’s handler would take
care of exceptions.
This has been tested on a JH7110 SoC with oreboot and its SBI delegating
unaligned access exceptions and the kernel configured to handle them.
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
ubuntu | 24.04 | noarch | linux | < any | UNKNOWN |
ubuntu | 24.04 | noarch | linux-aws | < any | UNKNOWN |
ubuntu | 24.04 | noarch | linux-azure | < any | UNKNOWN |
ubuntu | 24.04 | noarch | linux-gcp | < any | UNKNOWN |
ubuntu | 24.04 | noarch | linux-gke | < any | UNKNOWN |
ubuntu | 22.04 | noarch | linux-hwe-6.8 | < any | UNKNOWN |
ubuntu | 24.04 | noarch | linux-ibm | < any | UNKNOWN |
ubuntu | 24.04 | noarch | linux-intel | < any | UNKNOWN |
ubuntu | 24.04 | noarch | linux-lowlatency | < any | UNKNOWN |
ubuntu | 22.04 | noarch | linux-lowlatency-hwe-6.8 | < any | UNKNOWN |
git.kernel.org/linus/fb197c5d2fd24b9af3d4697d0cf778645846d6d5 (6.11-rc2)
git.kernel.org/stable/c/5d4aaf16a8255f7c71790e211724ba029609c5ff
git.kernel.org/stable/c/fb197c5d2fd24b9af3d4697d0cf778645846d6d5
launchpad.net/bugs/cve/CVE-2024-43868
nvd.nist.gov/vuln/detail/CVE-2024-43868
security-tracker.debian.org/tracker/CVE-2024-43868
www.cve.org/CVERecord?id=CVE-2024-43868