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CVE-2021-3743

HIGHCVSS 7.1/10EPSS 0.73%

Last modified

CVE-2021-3743 is a high-severity vulnerability rated 7.1/10 on the CVSS scale. An out-of-bounds (OOB) memory read flaw was found in the Qualcomm IPC router protocol in the Linux kernel. A missing sanity check allows a local attacker to gain access to out-of-bounds memory, leading to a system crash or a leak of internal kernel information. EPSS estimates a 0.73% chance of exploitation in the next 30 days.

Description

An out-of-bounds (OOB) memory read flaw was found in the Qualcomm IPC router protocol in the Linux kernel. A missing sanity check allows a local attacker to gain access to out-of-bounds memory, leading to a system crash or a leak of internal kernel information. The highest threat from this vulnerability is to system availability.

Metrics

CVSS 3.1
7.1/10

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

EPSS Probability
0.73%

49.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersionsUpdate
LinuxLinux Kernel> 5.14.1, < 5.17—
LinuxLinux Kernel5.14Rc6
LinuxLinux Kernel5.17—
FedoraprojectFedora34—
NetappH300s FirmwareAll versions—
NetappH500s FirmwareAll versions—
NetappH700s FirmwareAll versions—
NetappH300e FirmwareAll versions—
NetappH500e FirmwareAll versions—
NetappH700e FirmwareAll versions—
NetappH410s FirmwareAll versions—
NetappH410c FirmwareAll versions—
OracleCommunications Cloud Native Core Binding Support Function22.1.3—
OracleCommunications Cloud Native Core Network Exposure Function22.1.1—
OracleCommunications Cloud Native Core Policy22.2.0—

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2021-3743?
An out-of-bounds (OOB) memory read flaw was found in the Qualcomm IPC router protocol in the Linux kernel. A missing sanity check allows a local attacker to gain access to out-of-bounds memory, leading to a system crash or a leak of internal kernel information. The highest threat from this vulnerability is to system availability.
How severe is CVE-2021-3743?
CVE-2021-3743 has a CVSS score of 7.1/10 (HIGH severity). The EPSS model estimates a 0.73% probability of exploitation in the next 30 days.
How do I fix CVE-2021-3743?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-3743?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST