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CVE-2020-36779

17
FAUCET Score

CVE-2020-36779 describes a reference leak vulnerability in the Linux kernel's i2c-stm32f7 driver. Specifically, the pm_runtime_get_sync function increments the power management reference count even on failure, leading to a leak if not properly balanced. This issue affects the Linux kernel. With a CVSS score of 5.5 (Medium), this vulnerability has a local attack vector and low attack complexity, potentially leading to a high impact on availability (denial of service). There is no impact on confidentiality or integrity. There is currently no evidence of active exploitation, and no public exploit code is available in Metasploit, Nuclei, or ExploitDB. Community discussion and media coverage for this CVE are minimal, indicating low public attention.

Impacted Technologies

VendorProductVersion(s)CPE
>= 5.6, < 5.10.37CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.11, < 5.11.21CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.12, < 5.12.4CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.22%
Probability of exploitation in next 30 days
EPSS Percentile
12.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0022 is in the 57th percentile among its peer group of 15,940 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

redhatCVE-2020-36779Low

kernel: i2c: stm32f7: fix reference leak when pm_runtime_get_sync fails

Feb 28, 2024

References

git.kernel.org / stable/c/2c662660ce2bd3b09dae21a9a9ac9395e1e6c00b
Patch
git.kernel.org / stable/c/c323b270a52a26aa8038a4d1fd9a850904a41166
Patch
git.kernel.org / stable/c/c7ea772c9fcf711ed566814b92eecaffc0e2bfd0
Patch
git.kernel.org / stable/c/d791b90f5c5e5aa8ccf9e33386c16bd2b7e333a4
Patch