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CVE-2023-5717

HIGHCVSS 7.8/10EPSS 0.86%

Last modified

CVE-2023-5717 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. A heap out-of-bounds write vulnerability in the Linux kernel's Linux Kernel Performance Events (perf) component can be exploited to achieve local privilege escalation. If perf_read_group() is called while an event's sibling_list is smaller than its child's sibling_list, it can increment or write to memory locations outside of the allocated buffer. We recommend upgrading past commit 32671e3799ca2e4590773fd0e63aaa4229e50c06.. EPSS estimates a 0.86% chance of exploitation in the next 30 days.

Description

A heap out-of-bounds write vulnerability in the Linux kernel's Linux Kernel Performance Events (perf) component can be exploited to achieve local privilege escalation. If perf_read_group() is called while an event's sibling_list is smaller than its child's sibling_list, it can increment or write to memory locations outside of the allocated buffer. We recommend upgrading past commit 32671e3799ca2e4590773fd0e63aaa4229e50c06.

Metrics

CVSS 3.1
7.8/10

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

EPSS Probability
0.86%

53.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersionsUpdate
LinuxLinux Kernel>= 3.2.95, < 3.3—
LinuxLinux Kernel>= 3.16.50, < 3.17—
LinuxLinux Kernel>= 4.4, < 4.14.328—
LinuxLinux Kernel>= 4.15, < 4.19.297—
LinuxLinux Kernel>= 4.20, < 5.4.259—
LinuxLinux Kernel>= 5.5, < 5.10.199—
LinuxLinux Kernel>= 5.11, < 5.15.137—
LinuxLinux Kernel>= 5.16, < 6.1.60—
LinuxLinux Kernel>= 6.2, < 6.5.9—
LinuxLinux Kernel6.6Rc1

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2023-5717?
A heap out-of-bounds write vulnerability in the Linux kernel's Linux Kernel Performance Events (perf) component can be exploited to achieve local privilege escalation. If perf_read_group() is called while an event's sibling_list is smaller than its child's sibling_list, it can increment or write to memory locations outside of the allocated buffer. We recommend upgrading past commit 32671e3799ca2e4590773fd0e63aaa4229e50c06.
How severe is CVE-2023-5717?
CVE-2023-5717 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.86% probability of exploitation in the next 30 days.
How do I fix CVE-2023-5717?
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.

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Source: NVD / NIST