{
  "cveId": "CVE-2022-50450",
  "url": "https://patchblox.com/security/cve/CVE-2022-50450",
  "summary": "CVE-2022-50450 is fixed in linux on 1 platform, first by DEBIAN-CVE-2022-50450, released October 1, 2025. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  libbpf: Use elf_getshdrnum() instead of e_shnum...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  libbpf: Use elf_getshdrnum() instead of e_shnum  This commit replace e_shnum with the elf_getshdrnum() helper to fix two oss-fuzz-reported heap-buffer overflow in __bpf_object__open. Both reports are incorrectly marked as fixed and while still being reproducible in the latest libbpf.    # clusterfuzz-testcase-minimized-bpf-object-fuzzer-5747922482888704   libbpf: loading object \u0027fuzz-object\u0027 from buffer   libbpf: sec_cnt is 0   libbpf: elf: section(1) .data, size 0, link 538976288, flags 2020202020202020, type=2   libbpf: elf: section(2) .data, size 32, link 538976288, flags 202020202020ff20, type=1   =================================================================   ==13==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x6020000000c0 at pc 0x0000005a7b46 bp 0x7ffd12214af0 sp 0x7ffd12214ae8   WRITE of size 4 at 0x6020000000c0 thread T0   SCARINESS: 46 (4-byte-write-heap-buffer-overflow-far-from-bounds)       #0 0x5a7b45 in bpf_object__elf_collect /src/libbpf/src/libbpf.c:3414:24       #1 0x5733c0 in bpf_object_open /src/libbpf/src/libbpf.c:7223:16       #2 0x5739fd in bpf_object__open_mem /src/libbpf/src/libbpf.c:7263:20       ...  The issue lie in libbpf\u0027s direct use of e_shnum field in ELF header as the section header count. Where as libelf implemented an extra logic that, when e_shnum == 0 \u0026\u0026 e_shoff != 0, will use sh_size member of the initial section header as the real section header count (part of ELF spec to accommodate situation where section header counter is larger than SHN_LORESERVE).  The above inconsistency lead to libbpf writing into a zero-entry calloc area. So intead of using e_shnum directly, use the elf_getshdrnum() helper provided by libelf to retrieve the section header counter into sec_cnt.",
  "published": "2025-10-01T12:15:37Z",
  "severity": "",
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "6.1.4-1",
      "fix": "DEBIAN-CVE-2022-50450",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-50450",
      "released": "2025-10-01T12:15:37Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.1.4-1",
      "fix": "DEBIAN-CVE-2022-50450",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-50450",
      "released": "2025-10-01T12:15:37Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "6.1.4-1",
      "fix": "DEBIAN-CVE-2022-50450",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-50450",
      "released": "2025-10-01T12:15:37Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T19:12:23Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}