What’s Vulnerable › Vulnerabilities

CVE-2020-36780: i2c: sprd: fix reference leak when pm_runtime_get_sync fails

• Severity: medium (CVSS 4.7 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-02-28 · updated 2026-06-17

Description

In the Linux kernel, the following vulnerability has been resolved: i2c: sprd: fix reference leak when pm_runtime_get_sync fails The PM reference count is not expected to be incremented on return in sprd_i2c_master_xfer() and sprd_i2c_remove(). However, pm_runtime_get_sync will increment the PM reference count even failed. Forgetting to putting operation will result in a reference leak here. Replace it with pm_runtime_resume_and_get to keep usage counter balanced.

Affected products

• Linux kernel: from 4.14 before 5.4.119; from 5.5 before 5.10.37; from 5.11 before 5.11.21; from 5.12 before 5.12.4 — fixed in 5.10.37, 5.11.21, 5.12.4, 5.4.119

How to fix

Upgrade to a fixed version: Linux kernel 5.10.37, 5.11.21, 5.12.4, 5.4.119. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/3a4f326463117cee3adcb72999ca34a9aaafda93
• https://git.kernel.org/stable/c/7e1764312440c5df9dfe6b436035a03673b0c1b9
• https://git.kernel.org/stable/c/9223505e938ba3db5907e058f4209770cff2f2a7
• https://git.kernel.org/stable/c/d3406ab52097328a3bc4cbe124bfd8f6d51fb86f
• https://git.kernel.org/stable/c/e547640cee7981fd751d2c9cde3a61bdb678b755
• https://git.kernel.org/stable/c/3a4f326463117cee3adcb72999ca34a9aaafda93
• https://git.kernel.org/stable/c/7e1764312440c5df9dfe6b436035a03673b0c1b9
• https://git.kernel.org/stable/c/9223505e938ba3db5907e058f4209770cff2f2a7
• https://git.kernel.org/stable/c/d3406ab52097328a3bc4cbe124bfd8f6d51fb86f
• https://git.kernel.org/stable/c/e547640cee7981fd751d2c9cde3a61bdb678b755

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