{
  "cveId": "CVE-2022-48674",
  "url": "https://patchblox.com/security/cve/CVE-2022-48674",
  "summary": "CVE-2022-48674 is fixed in linux on 1 platform, first by DEBIAN-CVE-2022-48674, released May 3, 2024. It is not reported as exploited. Patch Radar priority: High.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  erofs: fix pcluster use-after-free on UP platfor...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  erofs: fix pcluster use-after-free on UP platforms  During stress testing with CONFIG_SMP disabled, KASAN reports as below:  ================================================================== BUG: KASAN: use-after-free in __mutex_lock\u002B0xe5/0xc30 Read of size 8 at addr ffff8881094223f8 by task stress/7789  CPU: 0 PID: 7789 Comm: stress Not tainted 6.0.0-rc1-00002-g0d53d2e882f9 #3 Hardware name: Red Hat KVM, BIOS 0.5.1 01/01/2011 Call Trace:  \u003CTASK\u003E ..  __mutex_lock\u002B0xe5/0xc30 ..  z_erofs_do_read_page\u002B0x8ce/0x1560 ..  z_erofs_readahead\u002B0x31c/0x580 .. Freed by task 7787  kasan_save_stack\u002B0x1e/0x40  kasan_set_track\u002B0x20/0x30  kasan_set_free_info\u002B0x20/0x40  __kasan_slab_free\u002B0x10c/0x190  kmem_cache_free\u002B0xed/0x380  rcu_core\u002B0x3d5/0xc90  __do_softirq\u002B0x12d/0x389  Last potentially related work creation:  kasan_save_stack\u002B0x1e/0x40  __kasan_record_aux_stack\u002B0x97/0xb0  call_rcu\u002B0x3d/0x3f0  erofs_shrink_workstation\u002B0x11f/0x210  erofs_shrink_scan\u002B0xdc/0x170  shrink_slab.constprop.0\u002B0x296/0x530  drop_slab\u002B0x1c/0x70  drop_caches_sysctl_handler\u002B0x70/0x80  proc_sys_call_handler\u002B0x20a/0x2f0  vfs_write\u002B0x555/0x6c0  ksys_write\u002B0xbe/0x160  do_syscall_64\u002B0x3b/0x90  The root cause is that erofs_workgroup_unfreeze() doesn\u0027t reset to orig_val thus it causes a race that the pcluster reuses unexpectedly before freeing.  Since UP platforms are quite rare now, such path becomes unnecessary. Let\u0027s drop such specific-designed path directly instead.",
  "published": "2024-05-03T15:15:07Z",
  "severity": "high",
  "cvss": 7.8,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
  "epss": 0.00234,
  "epssPercentile": 0.14428,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "5.19.11-1",
      "fix": "DEBIAN-CVE-2022-48674",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-48674",
      "released": "2024-05-03T15:15:07Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "5.19.11-1",
      "fix": "DEBIAN-CVE-2022-48674",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-48674",
      "released": "2024-05-03T15:15:07Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "5.19.11-1",
      "fix": "DEBIAN-CVE-2022-48674",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-48674",
      "released": "2024-05-03T15:15:07Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T06:59:42Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}