{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "c63433a09d6ae4c226fcbc66da4c58fc189fd746"
            },
            {
              "fixed": "a2ba20c17de8eb028f96b1d85f119d3d25655bd9"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "a31080899d5fdafcccf7f39dd214a814a2c82626"
            },
            {
              "fixed": "fbced33599653471b4581dfe1abc7b467031f126"
            },
            {
              "fixed": "5d4fe469fe7dbff7d874c196bb680a82f2625d95"
            },
            {
              "fixed": "2d29214448ec0f4e7e18bb1c14dd4a6c07f1c439"
            },
            {
              "fixed": "86f9c23e0814cfdffda9eedf0c591c51ba209010"
            },
            {
              "fixed": "49b1ce6d7cfb6c5a49f68bf5ccfcfb6ba14e63c3"
            },
            {
              "fixed": "78ec5bf2f589ec7fd8f169394bfeca541b077317"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "5.15.11"
            },
            {
              "fixed": "5.15.209"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.15.209"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.175"
            },
            {
              "fixed": "6.6.136"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.12.83"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.18.24"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.19.14"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43112.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nfs/smb/client: fix out-of-bounds read in cifs_sanitize_prepath\n\nWhen cifs_sanitize_prepath is called with an empty string or a string\ncontaining only delimiters (e.g., \"/\"), the current logic attempts to\ncheck *(cursor2 - 1) before cursor2 has advanced. This results in an\nout-of-bounds read.\n\nThis patch adds an early exit check after stripping prepended\ndelimiters. If no path content remains, the function returns NULL.\n\nThe bug was identified via manual audit and verified using a\nstandalone test case compiled with AddressSanitizer, which\ntriggered a SEGV on affected inputs.",
  "id": "CVE-2026-43112",
  "modified": "2026-07-10T03:54:33.579502319Z",
  "published": "2026-05-06T07:40:38.563Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2d29214448ec0f4e7e18bb1c14dd4a6c07f1c439"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/49b1ce6d7cfb6c5a49f68bf5ccfcfb6ba14e63c3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5d4fe469fe7dbff7d874c196bb680a82f2625d95"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/78ec5bf2f589ec7fd8f169394bfeca541b077317"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/86f9c23e0814cfdffda9eedf0c591c51ba209010"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a2ba20c17de8eb028f96b1d85f119d3d25655bd9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fbced33599653471b4581dfe1abc7b467031f126"
    },
    {
      "type": "WEB",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-43112.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:34911"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:36018"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:36365"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:36366"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/security/cve/CVE-2026-43112"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43112.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-43112"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2467015"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.7.5",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "fs/smb/client: fix out-of-bounds read in cifs_sanitize_prepath"
}