CVE-2024-43868

2024-08-2100:15:05

Linux

web.nvd.nist.gov

linux kernel

vulnerability

alignment

purgatory

trap handler

exception

jh7110 soc

oreboot

sbi

unaligned access

AI Score

6.4

Confidence

Low

EPSS

Percentile

9.5%

JSON

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.

Affected configurations

Vulners

Node

linuxlinux_kernelRange5.19–6.10.4

linuxlinux_kernelRange6.11.0≥

VendorProductVersionCPE
linuxlinux_kernel*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
linux	linux_kernel	*	cpe:2.3:o:linux:linux_kernel::::::::

CNA Affected

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "arch/riscv/purgatory/entry.S"
    ],
    "versions": [
      {
        "version": "736e30af583f",
        "lessThan": "5d4aaf16a825",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "736e30af583f",
        "lessThan": "fb197c5d2fd2",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "arch/riscv/purgatory/entry.S"
    ],
    "versions": [
      {
        "version": "5.19",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "5.19",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.10.4",
        "lessThanOrEqual": "6.10.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.11",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]