iomap: iomap: fix memory corruption when recording errors during writeback

{
  "id": "f0e36410ce45d5c83b53bc7bd32c9b09b8614327f382addfa78bd3e1d9b0a731",
  "url": "https://osv.dev/vulnerability/CVE-2022-50406",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "iomap: iomap: fix memory corruption when recording errors during writeback",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: iomap: iomap: fix memory corruption when recording errors during writeback Every now and then I see this crash on arm64: Unable to handle kernel NULL pointer dereference at virtual address 00000000000000f8 Buffer I/O error on dev dm-0, logical block 8733687, async page read Mem abort info: ESR = 0x0000000096000006 EC = 0x25: DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x06: level 2 translation fault Data abort info: ISV = 0, ISS = 0x00000006 CM = 0, WnR = 0 user pgtable: 64k pages, 42-bit VAs, pgdp=0000000139750000 [00000000000000f8] pgd=0000000000000000, p4d=0000000000000000, pud=0000000000000000, pmd=0000000000000000 Internal error: Oops: 96000006 [#1] PREEMPT SMP Buffer I/O error on dev dm-0, logical block 8733688, async page read Dumping ftrace buffer: Buffer I/O error on dev dm-0, logical block 8733689, async page read (ftrace buffer empty) XFS (dm-0): log I/O error -5 Modules linked in: dm_thin_pool dm_persistent_data XFS (dm-0): Metadata I/O Error (0x1) detected at xfs_trans_read_buf_map+0x1ec/0x590 [xfs] (fs/xfs/xfs_trans_buf.c:296). dm_bio_prison XFS (dm-0): Please unmount the filesystem and rectify the problem(s) XFS (dm-0): xfs_imap_lookup: xfs_ialloc_read_agi() returned error -5, agno 0 dm_bufio dm_log_writes xfs nft_chain_nat xt_REDIRECT nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 ip6t_REJECT potentially unexpected fatal signal 6. nf_reject_ipv6 potentially unex",
    "evidence": "osv:CVE-2022-50406",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "5.10.271",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.15.222",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.19.17",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.0.3",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "CVE-2022-50406",
      "aliases": [
        "CVE-2022-50406"
      ],
      "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": "150d5be09ce49a9bed6feb7b7dc4e5ae188778ec"
                },
                {
                  "fixed": "76a9234cb66479e9d02b15fd0f3e349cb2320279"
                },
                {
                  "fixed": "169adb79cfd59250a5b1f68cdc69e7287fc5a0ce"
                },
                {
                  "fixed": "82c66c46f73b88be74c869e2cbfef45281adf3c6"
                },
                {
                  "fixed": "7308591d9c7787aec58f6a01a7823f14e90db7a2"
                },
                {
                  "fixed": "3d5f3ba1ac28059bdf7000cae2403e4e984308d2"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-50406.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "4.6.0"
                },
                {
                  "fixed": "5.10.271"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.11.0"
                },
                {
                  "fixed": "5.15.222"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.16.0"
                },
                {
                  "fixed": "5.19.17"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.20.0"
                },
                {
                  "fixed": "6.0.3"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-50406.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:23.593178195Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/169adb79cfd59250a5b1f68cdc69e7287fc5a0ce",
        "https://git.kernel.org/stable/c/3d5f3ba1ac28059bdf7000cae2403e4e984308d2",
        "https://git.kernel.org/stable/c/7308591d9c7787aec58f6a01a7823f14e90db7a2",
        "https://git.kernel.org/stable/c/76a9234cb66479e9d02b15fd0f3e349cb2320279",
        "https://git.kernel.org/stable/c/82c66c46f73b88be74c869e2cbfef45281adf3c6",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50406.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2022-50406",
        "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/2022/50xxx/CVE-2022-50406.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2022-50406",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 489870,
  "published_at": "2025-09-18T16:03:51.155+00:00"
}