ep93xx: clock: Fix UAF in ep93xx_clk_register_gate()

{
  "id": "f053ee0e28b9bca23ad2239c00cbd8b88b05d415cdaae8173ce7de18bf22a514",
  "url": "https://osv.dev/vulnerability/CVE-2022-49047",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "ep93xx: clock: Fix UAF in ep93xx_clk_register_gate()",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: ep93xx: clock: Fix UAF in ep93xx_clk_register_gate() arch/arm/mach-ep93xx/clock.c:154:2: warning: Use of memory after it is freed [clang-analyzer-unix.Malloc] arch/arm/mach-ep93xx/clock.c:151:2: note: Taking true branch if (IS_ERR(clk)) ^ arch/arm/mach-ep93xx/clock.c:152:3: note: Memory is released kfree(psc); ^~~~~~~~~~ arch/arm/mach-ep93xx/clock.c:154:2: note: Use of memory after it is freed return &psc->hw; ^ ~~~~~~~~",
    "evidence": "osv:CVE-2022-49047",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "5.17.4",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "CVE-2022-49047",
      "aliases": [
        "CVE-2022-49047"
      ],
      "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": "9645ccc7bd7a16cd73c3be9dee70cd702b03be37"
                },
                {
                  "fixed": "0f12166872da46c6b57ba2f1314bbf310b3bf017"
                },
                {
                  "fixed": "3b68b08885217abd9c57ff9b3bb3eb173eee02a9"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-49047.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.16.0"
                },
                {
                  "fixed": "5.17.4"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-49047.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:43.204029428Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/0f12166872da46c6b57ba2f1314bbf310b3bf017",
        "https://git.kernel.org/stable/c/3b68b08885217abd9c57ff9b3bb3eb173eee02a9",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49047.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2022-49047",
        "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/2022/49xxx/CVE-2022-49047.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2022-49047",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 510682,
  "published_at": "2025-02-26T01:54:23.471+00:00"
}