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CVE-2022-49387watchdog: rzg2l_wdt: Fix 32bit overflow issue

Description

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!'.

Timeline

  1. ID reserved

    By Linux

  2. Published

  3. · 15 months later

    Record updated

Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.

Scores

CVSS scores of CVE-2022-49387, by who scored it
Scored byCVSSScoreVector
CISA-ADPADP (enrichment)3.1Medium5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
NVDNVD · Modified3.1Medium5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS (exploitation in 30 days)
0.26% · top 82% of all CVEs (14 Nov 2026)
CISA SSVC
Exploitation: none · Automatable: no · Technical impact: partial
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.

Affected products

  • Linux · Linux

    • affected 2cbc5cd0b55fa2310cc557c77b0665f5e00272de – < e07b9fa0dc32b492de85528caaf9f0c605d8424f
    • affected 2cbc5cd0b55fa2310cc557c77b0665f5e00272de – < b95a47667d34e76c2c9013f8e3b1e5039a5a0b76
    • affected 2cbc5cd0b55fa2310cc557c77b0665f5e00272de – < ea2949df22a533cdf75e4583c00b1ce94cd5a83b

  • Linux · Linux

    • affected 5.17
    • unaffected < 5.17
    • unaffected 5.17.15 – ≤ 5.17.*
    • unaffected 5.18.4 – ≤ 5.18.*
    • unaffected 5.19 – ≤ *

References

References3

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .