{
  "public_date" : "2026-04-24T00:00:00Z",
  "bugzilla" : {
    "description" : "kernel: staging: sm750fb: fix division by zero in ps_to_hz()",
    "id" : "2461450",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2461450"
  },
  "cwe" : "CWE-369",
  "details" : [ "In the Linux kernel, the following vulnerability has been resolved:\nstaging: sm750fb: fix division by zero in ps_to_hz()\nps_to_hz() is called from hw_sm750_crtc_set_mode() without validating\nthat pixclock is non-zero. A zero pixclock passed via FBIOPUT_VSCREENINFO\ncauses a division by zero.\nFix by rejecting zero pixclock in lynxfb_ops_check_var(), consistent\nwith other framebuffer drivers.", "A flaw was found in the Linux kernel's `sm750fb` framebuffer driver. A local user can exploit this vulnerability by providing a specially crafted input with a zero `pixclock` value via the `FBIOPUT_VSCREENINFO` ioctl. This leads to a division-by-zero error in the `ps_to_hz()` function, which can result in a system crash and a Denial of Service (DoS)." ],
  "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-2026-31603\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-31603\nhttps://lore.kernel.org/linux-cve-announce/2026042419-CVE-2026-31603-bfce@gregkh/T" ],
  "name" : "CVE-2026-31603",
  "csaw" : false
}