CVE-2022-48627
vt: fix memory overlapping when deleting chars in the buffer
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vt: fix memory overlapping when deleting chars in the buffer
In the Linux kernel, the following vulnerability has been resolved: vt: fix memory overlapping when deleting chars in the buffer A memory overlapping copy occurs when deleting a long line. This memory overlapping copy can cause data corruption when scr_memcpyw is optimized to memcpy because memcpy does not ensure its behavior if the destination buffer overlaps with the source buffer. The line buffer is not always broken, because the memcpy utilizes the hardware acceleration, whose result is not deterministic. Fix this problem by using replacing the scr_memcpyw with scr_memmovew.
Reserved 2024-02-25 | Published 2024-03-02 | Updated 2024-12-19 | Assigner Linuxgit.kernel.org/...c/c8686c014b5e872ba7e334f33ca553f14446fc29
git.kernel.org/...c/815be99d934e3292906536275f2b8d5131cdf52c
git.kernel.org/...c/bfee93c9a6c395f9aa62268f1cedf64999844926
git.kernel.org/...c/57964a5710252bc82fe22d9fa98c180c58c20244
git.kernel.org/...c/14d2cc21ca622310babf373e3a8f0b40acfe8265
git.kernel.org/...c/39cdb68c64d84e71a4a717000b6e5de208ee60cc
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