CVE-2022-50657
riscv: mm: add missing memcpy in kasan_init
Description
In the Linux kernel, the following vulnerability has been resolved: riscv: mm: add missing memcpy in kasan_init Hi Atish, It seems that the panic is due to the missing memcpy during kasan_init. Could you please check whether this patch is helpful? When doing kasan_populate, the new allocated base_pud/base_p4d should contain kasan_early_shadow_{pud, p4d}'s content. Add the missing memcpy to avoid page fault when read/write kasan shadow region. Tested on: - qemu with sv57 and CONFIG_KASAN on. - qemu with sv48 and CONFIG_KASAN on.
INFO
Published Date :
Dec. 9, 2025, 1:29 a.m.
Last Modified :
Dec. 9, 2025, 1:29 a.m.
Remotely Exploit :
No
Source :
Linux
Affected Products
The following products are affected by CVE-2022-50657
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
Solution
- Apply the provided patch to kasan_init.
- Ensure memcpy is correctly implemented.
- Test on affected configurations.
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