CVE-2026-68356watchdog: airoha: Prevent division by zero when clock frequency is zero
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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In the Linux kernel, the following vulnerability has been resolved: watchdog: airoha: Prevent division by zero when clock frequency is zero clk_get_rate() can return 0 when the clock provider is not properly configured or the clock is unmanaged. The driver uses wdt_freq as a divisor directly in airoha_wdt_probe() to compute max_timeout and in airoha_wdt_get_timeleft() to compute the remaining time, which results in a division by zero. Add a check for wdt_freq == 0 in probe and return -EINVAL with dev_err_probe() to prevent the division by zero and provide a diagnostic message.
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Aug 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 3cf67f3769b8227ca75ca7102180a2e270ee01aa before 8681e5addf7171602616e256a09057697dcc75ca; from 3cf67f3769b8227ca75ca7102180a2e270ee01aa before 57c3f5bd5be008cd5b4ff6a45b7cb90f5ca45a37; from 3cf67f3769b8227ca75ca7102180a2e270ee01aa before bcfcd7619f277842430d197556463b401b839ee9 | CNA record |
References
- https://git.kernel.org/stable/c/8681e5addf7171602616e256a09057697dcc75ca
- https://git.kernel.org/stable/c/57c3f5bd5be008cd5b4ff6a45b7cb90f5ca45a37
- https://git.kernel.org/stable/c/bcfcd7619f277842430d197556463b401b839ee9
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.