UBUNTU-CVE-2024-43868
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.
02 / AFFECTED SOFTWARE
Affected packages
7 explicit affected versions
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7 explicit affected versions
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9 explicit affected versions
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7 explicit affected versions
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13 explicit affected versions
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6 explicit affected versions
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14 explicit affected versions
11 explicit affected versions
12 explicit affected versions
27 explicit affected versions
12 explicit affected versions
7 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
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.
05 / REFERENCES
Further evidence
- https://git.kernel.org/linus/fb197c5d2fd24b9af3d4697d0cf778645846d6d5
- https://git.kernel.org/stable/c/5d4aaf16a8255f7c71790e211724ba029609c5ff
- https://git.kernel.org/stable/c/fb197c5d2fd24b9af3d4697d0cf778645846d6d5
- https://ubuntu.com/security/CVE-2024-43868
- https://ubuntu.com/security/notices/USN-7154-1
- https://ubuntu.com/security/notices/USN-7154-2
- https://ubuntu.com/security/notices/USN-7155-1
- https://ubuntu.com/security/notices/USN-7156-1
- https://ubuntu.com/security/notices/USN-7196-1
- https://www.cve.org/CVERecord?id=CVE-2024-43868