{
  "threat_severity" : "Moderate",
  "public_date" : "2025-12-24T00:00:00Z",
  "bugzilla" : {
    "description" : "kernel: Linux kernel: Denial of Service in qla2xxx SCSI driver due to improper command handling after chip reset",
    "id" : "2425039",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2425039"
  },
  "cvss3" : {
    "cvss3_base_score" : "4.7",
    "cvss3_scoring_vector" : "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
    "status" : "draft"
  },
  "cwe" : "CWE-366",
  "details" : [ "In the Linux kernel, the following vulnerability has been resolved:\nscsi: qla2xxx: Clear cmds after chip reset\nCommit aefed3e5548f (\"scsi: qla2xxx: target: Fix offline port handling\nand host reset handling\") caused two problems:\n1. Commands sent to FW, after chip reset got stuck and never freed as FW\nis not going to respond to them anymore.\n2. BUG_ON(cmd->sg_mapped) in qlt_free_cmd().  Commit 26f9ce53817a\n(\"scsi: qla2xxx: Fix missed DMA unmap for aborted commands\")\nattempted to fix this, but introduced another bug under different\ncircumstances when two different CPUs were racing to call\nqlt_unmap_sg() at the same time: BUG_ON(!valid_dma_direction(dir)) in\ndma_unmap_sg_attrs().\nSo revert \"scsi: qla2xxx: Fix missed DMA unmap for aborted commands\" and\npartially revert \"scsi: qla2xxx: target: Fix offline port handling and\nhost reset handling\" at __qla2x00_abort_all_cmds.", "A flaw was found in the Linux kernel's qla2xxx SCSI driver. This vulnerability occurs when commands sent to the firmware (FW) are not properly cleared after a chip reset. A local attacker could exploit a race condition during direct memory access (DMA) unmapping, leading to a kernel panic. This can result in a system crash and a Denial of Service (DoS)." ],
  "package_state" : [ {
    "product_name" : "Red Hat Enterprise Linux 10",
    "fix_state" : "Affected",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:10"
  }, {
    "product_name" : "Red Hat Enterprise Linux 6",
    "fix_state" : "Out of support scope",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "fix_state" : "Not affected",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "fix_state" : "Not affected",
    "package_name" : "kernel-rt",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "fix_state" : "Affected",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "fix_state" : "Affected",
    "package_name" : "kernel-rt",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "fix_state" : "Affected",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "fix_state" : "Affected",
    "package_name" : "kernel-rt",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2025-68745\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-68745\nhttps://lore.kernel.org/linux-cve-announce/2025122416-CVE-2025-68745-69b5@gregkh/T" ],
  "name" : "CVE-2025-68745",
  "mitigation" : {
    "value" : "To mitigate this issue, if the `qla2xxx` SCSI driver is not required, it can be prevented from loading by blacklisting the module. This can be achieved by creating a modprobe configuration file.\n1. Create a file named `/etc/modprobe.d/blacklist-qla2xxx.conf` with the following content:\n```\nblacklist qla2xxx\ninstall qla2xxx /bin/true\n```\n2. Rebuild the initial ramdisk:\n```bash\ndracut -f -v\n```\n3. Reboot the system for the changes to take effect.\nThis mitigation will prevent the `qla2xxx` module from loading, which may impact systems relying on QLogic Fibre Channel HBAs. A system reboot is required for the changes to take full effect.",
    "lang" : "en:us"
  },
  "csaw" : false
}