{
  "cveId": "CVE-2022-49390",
  "url": "https://patchblox.com/security/cve/CVE-2022-49390",
  "summary": "CVE-2022-49390 is fixed in linux on 1 platform, first by DEBIAN-CVE-2022-49390, released February 26, 2025. It is not reported as exploited. Patch Radar priority: High.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  macsec: fix UAF bug for real_dev  Create a new m...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  macsec: fix UAF bug for real_dev  Create a new macsec device but not get reference to real_dev. That can not ensure that real_dev is freed after macsec. That will trigger the UAF bug for real_dev as following:  ================================================================== BUG: KASAN: use-after-free in macsec_get_iflink\u002B0x5f/0x70 drivers/net/macsec.c:3662 Call Trace:  ...  macsec_get_iflink\u002B0x5f/0x70 drivers/net/macsec.c:3662  dev_get_iflink\u002B0x73/0xe0 net/core/dev.c:637  default_operstate net/core/link_watch.c:42 [inline]  rfc2863_policy\u002B0x233/0x2d0 net/core/link_watch.c:54  linkwatch_do_dev\u002B0x2a/0x150 net/core/link_watch.c:161  Allocated by task 22209:  ...  alloc_netdev_mqs\u002B0x98/0x1100 net/core/dev.c:10549  rtnl_create_link\u002B0x9d7/0xc00 net/core/rtnetlink.c:3235  veth_newlink\u002B0x20e/0xa90 drivers/net/veth.c:1748  Freed by task 8:  ...  kfree\u002B0xd6/0x4d0 mm/slub.c:4552  kvfree\u002B0x42/0x50 mm/util.c:615  device_release\u002B0x9f/0x240 drivers/base/core.c:2229  kobject_cleanup lib/kobject.c:673 [inline]  kobject_release lib/kobject.c:704 [inline]  kref_put include/linux/kref.h:65 [inline]  kobject_put\u002B0x1c8/0x540 lib/kobject.c:721  netdev_run_todo\u002B0x72e/0x10b0 net/core/dev.c:10327  After commit faab39f63c1f (\u0022net: allow out-of-order netdev unregistration\u0022) and commit e5f80fcf869a (\u0022ipv6: give an IPv6 dev to blackhole_netdev\u0022), we can add dev_hold_track() in macsec_dev_init() and dev_put_track() in macsec_free_netdev() to fix the problem.",
  "published": "2025-02-26T07:01:15Z",
  "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": 0.0027,
  "epssPercentile": 0.19365,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "5.18.5-1",
      "fix": "DEBIAN-CVE-2022-49390",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-49390",
      "released": "2025-02-26T07:01:15Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "5.18.5-1",
      "fix": "DEBIAN-CVE-2022-49390",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-49390",
      "released": "2025-02-26T07:01:15Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "5.18.5-1",
      "fix": "DEBIAN-CVE-2022-49390",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-49390",
      "released": "2025-02-26T07:01:15Z"
    }
  ],
  "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"
  }
}