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CVE-2022-50657

riscv: mm: add missing memcpy in kasan_init PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
Linux / Linuxaffected 8fbdccd2b17335e1881a23865e98c63fcc345938 before ff0f6becf3a6f817838b6f80a2c9cca43dce0576; affected 8fbdccd2b17335e1881a23865e98c63fcc345938 before 9f2ac64d6ca60db99132e08628ac2899f956a0ec
Linux / Linuxaffected 5.18; unaffected 0 before 5.18; unaffected 6.0.7 through 6.0.*; unaffected 6.1 through *

CWE

No CWE identifiers supplied.

References