CVE-2024-35823 vt: fix unicode buffer corruption when deleting characters

2024-05-1713:23:25

Linux

github.com

linux kernel

vulnerability

fix

unicode buffer

corruption

characters

memory overlapping

AI Score

7.2

Confidence

Low

SSVC

Exploitation

none

Automatable

Technical Impact

partial

JSON

In the Linux kernel, the following vulnerability has been resolved:

vt: fix unicode buffer corruption when deleting characters

This is the same issue that was fixed for the VGA text buffer in commit
39cdb68c64d8 (“vt: fix memory overlapping when deleting chars in the
buffer”). The cure is also the same i.e. replace memcpy() with memmove()
due to the overlaping buffers.

CNA Affected

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "81732c3b2fed",
        "lessThan": "fc7dfe3d123f",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "81732c3b2fed",
        "lessThan": "ff7342090c1e",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "81732c3b2fed",
        "lessThan": "1ce408f75ccf",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "81732c3b2fed",
        "lessThan": "0190d19d7651",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "81732c3b2fed",
        "lessThan": "994a1e583c0c",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "81732c3b2fed",
        "lessThan": "7529cbd8b5f6",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "81732c3b2fed",
        "lessThan": "2933b1e4757a",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "81732c3b2fed",
        "lessThan": "1581dafaf0d3",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "drivers/tty/vt/vt.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "3.7"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "3.7",
        "versionType": "custom"
      },
      {
        "status": "unaffected",
        "version": "4.19.312",
        "versionType": "custom",
        "lessThanOrEqual": "4.19.*"
      },
      {
        "status": "unaffected",
        "version": "5.4.274",
        "versionType": "custom",
        "lessThanOrEqual": "5.4.*"
      },
      {
        "status": "unaffected",
        "version": "5.10.215",
        "versionType": "custom",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.154",
        "versionType": "custom",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.84",
        "versionType": "custom",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.24",
        "versionType": "custom",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.7.12",
        "versionType": "custom",
        "lessThanOrEqual": "6.7.*"
      },
      {
        "status": "unaffected",
        "version": "6.8",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "drivers/tty/vt/vt.c"
    ],
    "defaultStatus": "affected"
  }
]