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Vulnerability · Published Mar 27, 2025 · Assigned by Linux

CVE-2022-49749i2c: designware: use casting of u64 in clock multiplication to avoid overflow

Medium 5.5

In plain English

A medium-severity integer overflow in Linux from Linux. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 9% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)5.5Medium
Exploit odds (30 days)0.2%top 90.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

In the Linux kernel, the following vulnerability has been resolved: i2c: designware: use casting of u64 in clock multiplication to avoid overflow In functions i2c_dw_scl_lcnt() and i2c_dw_scl_hcnt() may have overflow by depending on the values of the given parameters including the ic_clk. For example in our use case where ic_clk is larger than one million, multiplication of ic_clk * 4700 will result in 32 bit overflow. Add cast of u64 to the calculation to avoid multiplication overflow, and use the corresponding define for divide.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux6.1.11-1DEBIAN-CVE-2022-49749
Debian:13linux6.1.11-1DEBIAN-CVE-2022-49749
Debian:14linux6.1.11-1DEBIAN-CVE-2022-49749
Ubuntu:22.04:LTSlinux5.15.0-70.77UBUNTU-CVE-2022-49749
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2022-49749
Ubuntu:22.04:LTSlinux-aws5.15.0-1034.38UBUNTU-CVE-2022-49749
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2022-49749
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2022-49749
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2022-49749
Ubuntu:22.04:LTSlinux-azure5.15.0-1036.43UBUNTU-CVE-2022-49749
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2022-49749
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2022-49749
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2022-49749
Ubuntu:22.04:LTSlinux-azure-fde5.15.0-1036.43.1UBUNTU-CVE-2022-49749
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2022-49749
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2022-49749
Ubuntu:22.04:LTSlinux-gcp5.15.0-1032.40UBUNTU-CVE-2022-49749
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2022-49749
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2022-49749
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2022-49749
Ubuntu:22.04:LTSlinux-gke5.15.0-1031.36UBUNTU-CVE-2022-49749
Ubuntu:22.04:LTSlinux-gkeop5.15.0-1018.23UBUNTU-CVE-2022-49749
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2022-49749
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2022-49749
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2022-49749
Ubuntu:22.04:LTSlinux-ibm5.15.0-1028.31UBUNTU-CVE-2022-49749
Ubuntu:22.04:LTSlinux-intel-iotg5.15.0-1028.33UBUNTU-CVE-2022-49749
Ubuntu:22.04:LTSlinux-kvm5.15.0-1031.36UBUNTU-CVE-2022-49749
Ubuntu:22.04:LTSlinux-lowlatency5.15.0-70.77UBUNTU-CVE-2022-49749
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2022-49749
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2022-49749
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2022-49749
Ubuntu:22.04:LTSlinux-nvidia5.15.0-1023.23UBUNTU-CVE-2022-49749
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2022-49749
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2022-49749
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2022-49749
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2022-49749
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2022-49749
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2022-49749
Ubuntu:22.04:LTSlinux-oracle5.15.0-1033.39UBUNTU-CVE-2022-49749
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2022-49749
Ubuntu:22.04:LTSlinux-raspi5.15.0-1027.29UBUNTU-CVE-2022-49749
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2022-49749
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2022-49749
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2022-49749
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2022-49749
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2022-49749
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2022-49749
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2022-49749
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2022-49749
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2022-49749

Affected products (as reported)

VendorProductVersions
Linux Linux 2373f6b9744d5373b886f3ce1a985193cca0a356 – before ed173f77fd28a3e4fffc13b3f28687b9eba611572373f6b9744d5373b886f3ce1a985193cca0a356 – before 2f29d780bd691d20e89e5b35d5e6568607115e942373f6b9744d5373b886f3ce1a985193cca0a356 – before 9f36aae9e80e79b7a6d62227eaa96935166be9fe2373f6b9744d5373b886f3ce1a985193cca0a356 – before c8c37bc514514999e62a17e95160ed9ebf75ca8d
Linux Linux 3.2

Weakness: CWE-190 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

References