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CVE PROGRAM SOURCE RECORD5.5 Medium

CVE-2022-48627

vt: fix memory overlapping when deleting chars in the buffer

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Status
Published
Published
Updated
Assigning organization
Linux

Description

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 81732c3b2fede049a692e58a7ceabb6d18ffb18c to < c8686c014b5e872ba7e334f33ca553f14446fc29affected
  • 81732c3b2fede049a692e58a7ceabb6d18ffb18c to < 815be99d934e3292906536275f2b8d5131cdf52caffected
  • 81732c3b2fede049a692e58a7ceabb6d18ffb18c to < bfee93c9a6c395f9aa62268f1cedf64999844926affected
  • 81732c3b2fede049a692e58a7ceabb6d18ffb18c to < 57964a5710252bc82fe22d9fa98c180c58c20244affected
  • 81732c3b2fede049a692e58a7ceabb6d18ffb18c to < 14d2cc21ca622310babf373e3a8f0b40acfe8265affected
  • 81732c3b2fede049a692e58a7ceabb6d18ffb18c to < 39cdb68c64d84e71a4a717000b6e5de208ee60ccaffected

Linux Linux

Default version status: affected

  • 3.7affected
  • 0 to < 3.7unaffected
  • 4.19.312 to ≤ 4.19.*unaffected
  • 5.4.274 to ≤ 5.4.*unaffected
  • 5.10.132 to ≤ 5.10.*unaffected
  • 5.15.56 to ≤ 5.15.*unaffected
  • 5.18.13 to ≤ 5.18.*unaffected
  • 5.19 to ≤ *unaffected

References