{
  "public_date" : "2026-04-24T00:00:00Z",
  "bugzilla" : {
    "description" : "kernel: smb: server: avoid double-free in smb_direct_free_sendmsg after smb_direct_flush_send_list()",
    "id" : "2461452",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2461452"
  },
  "cwe" : "CWE-1341",
  "details" : [ "In the Linux kernel, the following vulnerability has been resolved:\nsmb: server: avoid double-free in smb_direct_free_sendmsg after smb_direct_flush_send_list()\nsmb_direct_flush_send_list() already calls smb_direct_free_sendmsg(),\nso we should not call it again after post_sendmsg()\nmoved it to the batch list.", "A flaw was found in the Linux kernel's Server Message Block (SMB) server component. This vulnerability, a double-free error, occurs when the `smb_direct_free_sendmsg` function is called redundantly after `smb_direct_flush_send_list()` has already executed it. A remote attacker could potentially exploit this flaw, leading to memory corruption and a denial of service (DoS) on the affected system." ],
  "package_state" : [ {
    "product_name" : "Red Hat Enterprise Linux 10",
    "fix_state" : "Not affected",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:10"
  }, {
    "product_name" : "Red Hat Enterprise Linux 6",
    "fix_state" : "Not affected",
    "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" : "Not affected",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "fix_state" : "Not affected",
    "package_name" : "kernel-rt",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "fix_state" : "Not affected",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "fix_state" : "Not affected",
    "package_name" : "kernel-rt",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2026-31608\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-31608\nhttps://lore.kernel.org/linux-cve-announce/2026042421-CVE-2026-31608-1786@gregkh/T" ],
  "name" : "CVE-2026-31608",
  "csaw" : false
}