{
  "cveId": "CVE-2021-47077",
  "url": "https://patchblox.com/security/cve/CVE-2021-47077",
  "summary": "CVE-2021-47077 is fixed in linux on 1 platform, first by DEBIAN-CVE-2021-47077, released March 1, 2024. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  scsi: qedf: Add pointer checks in qedf_update_li...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  scsi: qedf: Add pointer checks in qedf_update_link_speed()  The following trace was observed:   [   14.042059] Call Trace:  [   14.042061]  \u003CIRQ\u003E  [   14.042068]  qedf_link_update\u002B0x144/0x1f0 [qedf]  [   14.042117]  qed_link_update\u002B0x5c/0x80 [qed]  [   14.042135]  qed_mcp_handle_link_change\u002B0x2d2/0x410 [qed]  [   14.042155]  ? qed_set_ptt\u002B0x70/0x80 [qed]  [   14.042170]  ? qed_set_ptt\u002B0x70/0x80 [qed]  [   14.042186]  ? qed_rd\u002B0x13/0x40 [qed]  [   14.042205]  qed_mcp_handle_events\u002B0x437/0x690 [qed]  [   14.042221]  ? qed_set_ptt\u002B0x70/0x80 [qed]  [   14.042239]  qed_int_sp_dpc\u002B0x3a6/0x3e0 [qed]  [   14.042245]  tasklet_action_common.isra.14\u002B0x5a/0x100  [   14.042250]  __do_softirq\u002B0xe4/0x2f8  [   14.042253]  irq_exit\u002B0xf7/0x100  [   14.042255]  do_IRQ\u002B0x7f/0xd0  [   14.042257]  common_interrupt\u002B0xf/0xf  [   14.042259]  \u003C/IRQ\u003E  API qedf_link_update() is getting called from QED but by that time shost_data is not initialised. This results in a NULL pointer dereference when we try to dereference shost_data while updating supported_speeds.  Add a NULL pointer check before dereferencing shost_data.",
  "published": "2024-03-01T22:15:47Z",
  "severity": "medium",
  "cvss": 5.5,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.00225,
  "epssPercentile": 0.13315,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "5.10.40-1",
      "fix": "DEBIAN-CVE-2021-47077",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-47077",
      "released": "2024-03-01T22:15:47Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "5.10.40-1",
      "fix": "DEBIAN-CVE-2021-47077",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-47077",
      "released": "2024-03-01T22:15:47Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "5.10.40-1",
      "fix": "DEBIAN-CVE-2021-47077",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-47077",
      "released": "2024-03-01T22:15:47Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-12T01:51:14Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}