Vulnerability · CVE-2026-98409
CVE-2026-98409: watchdog: rtd119x: Avoid division by zero
Published Oct 14, 2026 · Linux Linux Kernel
Check if you run it
No confirmed exploitation is on record for CVE-2026-98409. EPSS is 0.21%. Act only if a listed version of Linux Linux Kernel is installed.
Gaps on this record
- No version range is stored. A customer cannot check an installed version against this record.
- No vendor fix or required action is stored. Compare the linked advisory before you change production.
- Severity
- Medium—
- Known exploitation
- Not in CISA/VulnCheck KEV
- EPSS
- 0.21%
- Remediation
- Not established
- Affected products
- linux kernel
From: Greg Kroah-Hartman Description =========== In the Linux kernel, the following vulnerability has been resolved: watchdog: rtd119x: Avoid division by zero clk_get_rate() could return 0. Avoid a division by zero panic. The Linux kernel CVE team has assigned CVE-2026-98409 to this issue. Affected and fixed versions =========================== Issue introduced in 4.16 with commit 2bdf6acbfead7e9aa69f36ee5682d1e5c8f70367 and fixed in 6.6.158 with commit 757c721545b9ffac5c3042a0cd3685ea28af7e81 Issue introduced in 4.16 with commit 2bdf6acbfead7e9aa69f36ee5682d1e5c8f70367 and
Are you affected?
Enter the version you run. The result uses only the ranges stored on this record.
The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.
- linux kernelversion unspecified
How to fix CVE-2026-98409
Recommended remediation
No required-action text, fix commit, or clear fixed-version range is stored yet.
Official advisories
What to do
Three questions, each answered from this record only. Confirm the vendor advisory before you patch.
Should you patch?
No confirmed exploitation is on record for CVE-2026-98409. EPSS is 0.21%. Act only if a listed version of Linux Linux Kernel is installed.
Which versions are affected?
Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.
What should an analyst verify?
No weakness class is stored. EPSS 0.21%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.
Code
The project this record applies to. Exploit listings stay in References.
No public source repository is identified for this product.
Timeline
Detection, updates, and resolution for this record.
Oct 14, 2026 · Tenable CVE Database
Detected
In the Linux kernel, the following vulnerability has been resolved: watchdog: rtd119x: Avoid division by zero clk_get_rate() could return 0. Avoid a division by zero panic.
Sources
- CVE.orgVulnerability recordCVE-2026-98409
Official CVE identifier
cve.org - FIRST EPSSExploitation probabilityCVE-2026-98409
30-day exploitation probability 0.2%
first.org - Linux Kernel CVEVendor advisoryCVE-2026-98409
From: Greg Kroah-Hartman Description =========== In the Linux kernel, the following vulnerability has been resolved: watchdog: rtd119x: Avoid division by zero clk_get_rate() could return 0. Avoid a division by zero panic. The Linux kernel CVE team has assigned CVE-2026-98409 to t
git.kernel.org - Tenable CVE DatabaseVulnerability recordCVE-2026-98409
In the Linux kernel, the following vulnerability has been resolved: watchdog: rtd119x: Avoid division by zero clk_get_rate() could return 0. Avoid a division by zero panic.
tenable.com
Freshness
Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.