LoongArch: BPF: Zero-extend signed ALU32 div/mod results

{
  "id": "fd04663c50b4f13114693effd98b5b66cd69af4662e5d5db02238bbd67507e2c",
  "url": "https://osv.dev/vulnerability/CVE-2026-68295",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "LoongArch: BPF: Zero-extend signed ALU32 div/mod results",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: LoongArch: BPF: Zero-extend signed ALU32 div/mod results ALU32 operations write a 32-bit result and leave the upper 32 bits of the BPF register zero. The LoongArch JIT sign-extends the result of signed ALU32 BPF_DIV and BPF_MOD (off=1), so a negative 32-bit quotient or remainder leaves bits 63:32 set in JITted code while the verifier and interpreter model those bits as zero. Keep sign-extension on the operands, which signed divide needs, and zero-extend the ALU32 result after the divide or modulo instruction, matching the unsigned ALU32 div/mod paths and every other ALU32 operation in this JIT.",
    "evidence": "osv:CVE-2026-68295",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.12.114",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.18.57",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "7.1.6",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-68295",
      "aliases": [
        "CVE-2026-68295"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "2425c9e002d2a1fdca34261b2fa6713eafef2163"
                },
                {
                  "fixed": "7577cca85f2d4590c9d9423ba72ef54181a713c9"
                },
                {
                  "fixed": "16656c3d734693be3d8a36dbf9d09142b69f3ddc"
                },
                {
                  "fixed": "716cb29dbed4d62e9e108950a1a82bcba4cc2d45"
                },
                {
                  "fixed": "dacd348b8a993373576fe2ee2d8b114740ba57a6"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-68295.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.7.0"
                },
                {
                  "fixed": "6.12.114"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.13.0"
                },
                {
                  "fixed": "6.18.57"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.19.0"
                },
                {
                  "fixed": "7.1.6"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-68295.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:25.099519354Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/16656c3d734693be3d8a36dbf9d09142b69f3ddc",
        "https://git.kernel.org/stable/c/716cb29dbed4d62e9e108950a1a82bcba4cc2d45",
        "https://git.kernel.org/stable/c/7577cca85f2d4590c9d9423ba72ef54181a713c9",
        "https://git.kernel.org/stable/c/dacd348b8a993373576fe2ee2d8b114740ba57a6",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68295.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-68295",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68295.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-68295",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 491697,
  "published_at": "2026-08-10T12:02:28.412+00:00"
}