{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "98e4da8ca301e062d79ae168c67e56f3c3de3ce4"
            },
            {
              "fixed": "f8b3c3fcf33105bc1ee7788e3b51b0a1ae42ae53"
            },
            {
              "fixed": "2766ddaf45b69252bb8fe526b5b6e56904a9ae7a"
            },
            {
              "fixed": "bce859358d3d5940aa858e40ceee70ee6e76130e"
            },
            {
              "fixed": "89d9a48d0cd30429463ea4e37ca83be6773ed5eb"
            },
            {
              "fixed": "ccffa99ae6a1f44797b57444c6a80382a42928fe"
            },
            {
              "fixed": "4d17e6fe9293d57081ffdc11e1cf313e25e8fd9e"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.8.0"
            },
            {
              "fixed": "5.4.198"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.5.0"
            },
            {
              "fixed": "5.10.121"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.46"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "5.17.14"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.18.0"
            },
            {
              "fixed": "5.18.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49380.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: fix to avoid f2fs_bug_on() in dec_valid_node_count()\n\nAs Yanming reported in bugzilla:\n\nhttps://bugzilla.kernel.org/show_bug.cgi?id=215897\n\nI have encountered a bug in F2FS file system in kernel v5.17.\n\nThe kernel should enable CONFIG_KASAN=y and CONFIG_KASAN_INLINE=y. You can\nreproduce the bug by running the following commands:\n\nThe kernel message is shown below:\n\nkernel BUG at fs/f2fs/f2fs.h:2511!\nCall Trace:\n f2fs_remove_inode_page+0x2a2/0x830\n f2fs_evict_inode+0x9b7/0x1510\n evict+0x282/0x4e0\n do_unlinkat+0x33a/0x540\n __x64_sys_unlinkat+0x8e/0xd0\n do_syscall_64+0x3b/0x90\n entry_SYSCALL_64_after_hwframe+0x44/0xae\n\nThe root cause is: .total_valid_block_count or .total_valid_node_count\ncould fuzzed to zero, then once dec_valid_node_count() was called, it\nwill cause BUG_ON(), this patch fixes to print warning info and set\nSBI_NEED_FSCK into CP instead of panic.",
  "id": "CVE-2022-49380",
  "modified": "2026-07-15T01:49:01.214052125Z",
  "published": "2025-02-26T02:11:18.314Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2766ddaf45b69252bb8fe526b5b6e56904a9ae7a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4d17e6fe9293d57081ffdc11e1cf313e25e8fd9e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/89d9a48d0cd30429463ea4e37ca83be6773ed5eb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bce859358d3d5940aa858e40ceee70ee6e76130e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ccffa99ae6a1f44797b57444c6a80382a42928fe"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f8b3c3fcf33105bc1ee7788e3b51b0a1ae42ae53"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49380.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-49380"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.8.0",
  "summary": "f2fs: fix to avoid f2fs_bug_on() in dec_valid_node_count()"
}