{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "kernel/bpf/verifier.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "06615967d4889b08b19ff3dda96e8b131282f73d",
              "status": "affected",
              "version": "c69431aab67a912836e5831f03d99a819c14c9c3",
              "versionType": "git"
            },
            {
              "lessThan": "3e210891c4a4c2d858cd6f9f61d5809af251d4df",
              "status": "affected",
              "version": "c69431aab67a912836e5831f03d99a819c14c9c3",
              "versionType": "git"
            },
            {
              "lessThan": "42378a9ca55347102bbf86708776061d8fe3ece2",
              "status": "affected",
              "version": "c69431aab67a912836e5831f03d99a819c14c9c3",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "kernel/bpf/verifier.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.14"
            },
            {
              "lessThan": "5.14",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.79",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.0.*",
              "status": "unaffected",
              "version": "6.0.9",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf, verifier: Fix memory leak in array reallocation for stack state\n\nIf an error (NULL) is returned by krealloc(), callers of realloc_array()\nwere setting their allocation pointers to NULL, but on error krealloc()\ndoes not touch the original allocation. This would result in a memory\nresource leak. Instead, free the old allocation on the error handling\npath.\n\nThe memory leak information is as follows as also reported by Zhengchao:\n\n  unreferenced object 0xffff888019801800 (size 256):\n  comm \"bpf_repo\", pid 6490, jiffies 4294959200 (age 17.170s)\n  hex dump (first 32 bytes):\n    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................\n    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................\n  backtrace:\n    [\u003c00000000b211474b\u003e] __kmalloc_node_track_caller+0x45/0xc0\n    [\u003c0000000086712a0b\u003e] krealloc+0x83/0xd0\n    [\u003c00000000139aab02\u003e] realloc_array+0x82/0xe2\n    [\u003c00000000b1ca41d1\u003e] grow_stack_state+0xfb/0x186\n    [\u003c00000000cd6f36d2\u003e] check_mem_access.cold+0x141/0x1341\n    [\u003c0000000081780455\u003e] do_check_common+0x5358/0xb350\n    [\u003c0000000015f6b091\u003e] bpf_check.cold+0xc3/0x29d\n    [\u003c000000002973c690\u003e] bpf_prog_load+0x13db/0x2240\n    [\u003c00000000028d1644\u003e] __sys_bpf+0x1605/0x4ce0\n    [\u003c00000000053f29bd\u003e] __x64_sys_bpf+0x75/0xb0\n    [\u003c0000000056fedaf5\u003e] do_syscall_64+0x35/0x80\n    [\u003c000000002bd58261\u003e] entry_SYSCALL_64_after_hwframe+0x63/0xcd"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-05-01T14:10:26.389Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/06615967d4889b08b19ff3dda96e8b131282f73d"
        },
        {
          "url": "https://git.kernel.org/stable/c/3e210891c4a4c2d858cd6f9f61d5809af251d4df"
        },
        {
          "url": "https://git.kernel.org/stable/c/42378a9ca55347102bbf86708776061d8fe3ece2"
        }
      ],
      "title": "bpf, verifier: Fix memory leak in array reallocation for stack state",
      "x_generator": {
        "engine": "bippy-1.1.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-49878",
    "datePublished": "2025-05-01T14:10:26.389Z",
    "dateReserved": "2025-05-01T14:05:17.239Z",
    "dateUpdated": "2025-05-01T14:10:26.389Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2022-49878\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-05-01T15:16:12.753\",\"lastModified\":\"2025-05-01T15:16:12.753\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nbpf, verifier: Fix memory leak in array reallocation for stack state\\n\\nIf an error (NULL) is returned by krealloc(), callers of realloc_array()\\nwere setting their allocation pointers to NULL, but on error krealloc()\\ndoes not touch the original allocation. This would result in a memory\\nresource leak. Instead, free the old allocation on the error handling\\npath.\\n\\nThe memory leak information is as follows as also reported by Zhengchao:\\n\\n  unreferenced object 0xffff888019801800 (size 256):\\n  comm \\\"bpf_repo\\\", pid 6490, jiffies 4294959200 (age 17.170s)\\n  hex dump (first 32 bytes):\\n    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................\\n    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................\\n  backtrace:\\n    [\u003c00000000b211474b\u003e] __kmalloc_node_track_caller+0x45/0xc0\\n    [\u003c0000000086712a0b\u003e] krealloc+0x83/0xd0\\n    [\u003c00000000139aab02\u003e] realloc_array+0x82/0xe2\\n    [\u003c00000000b1ca41d1\u003e] grow_stack_state+0xfb/0x186\\n    [\u003c00000000cd6f36d2\u003e] check_mem_access.cold+0x141/0x1341\\n    [\u003c0000000081780455\u003e] do_check_common+0x5358/0xb350\\n    [\u003c0000000015f6b091\u003e] bpf_check.cold+0xc3/0x29d\\n    [\u003c000000002973c690\u003e] bpf_prog_load+0x13db/0x2240\\n    [\u003c00000000028d1644\u003e] __sys_bpf+0x1605/0x4ce0\\n    [\u003c00000000053f29bd\u003e] __x64_sys_bpf+0x75/0xb0\\n    [\u003c0000000056fedaf5\u003e] do_syscall_64+0x35/0x80\\n    [\u003c000000002bd58261\u003e] entry_SYSCALL_64_after_hwframe+0x63/0xcd\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/06615967d4889b08b19ff3dda96e8b131282f73d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/3e210891c4a4c2d858cd6f9f61d5809af251d4df\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/42378a9ca55347102bbf86708776061d8fe3ece2\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}