CVE-2022-49387

Summary

In the Linux kernel, the following vulnerability has been resolved:

watchdog: rzg2l_wdt: Fix 32bit overflow issue

The value of timer_cycle_us can be 0 due to 32bit overflow. For eg:- If we assign the counter value "0xfff" for computing maxval.

This patch fixes this issue by appending ULL to 1024, so that it is promoted to 64bit.

This patch also fixes the warning message, 'watchdog: Invalid min and max timeout values, resetting to 0!'.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux2cbc5cd0b55fa2310cc557c77b0665f5e00272de < e07b9fa0dc32b492de85528caaf9f0c605d8424faffected
LinuxLinux2cbc5cd0b55fa2310cc557c77b0665f5e00272de < b95a47667d34e76c2c9013f8e3b1e5039a5a0b76affected
LinuxLinux2cbc5cd0b55fa2310cc557c77b0665f5e00272de < ea2949df22a533cdf75e4583c00b1ce94cd5a83baffected
LinuxLinux5.17affected
LinuxLinux0 < 5.17unaffected
LinuxLinux5.17.15 <= 5.17.*unaffected
LinuxLinux5.18.4 <= 5.18.*unaffected
LinuxLinux5.19 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References