CVE-2023-52735: linux kernel Buffer Overflow — Fix

Description

In the Linux kernel, the following vulnerability has been resolved: bpf, sockmap: Don't let sock_map_{close,destroy,unhash} call itself sock_map proto callbacks should never call themselves by design. Protect against bugs like [1] and break out of the recursive loop to avoid a stack overflow in favor of a resource leak. [1] https://lore.kernel.org/all/[email protected]/

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CVSS v3.1 Score

9.1

CRITICAL

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

Weakness Type (CWE)

CWE-120 CWE-120

Affected Products

Vendor	Product	Versions
linux	linux_kernel	< 5.15.95
linux	linux_kernel	5.16 — 6.1.13
linux	linux_kernel	All
linux	linux_kernel	All
linux	linux_kernel	All
linux	linux_kernel	All
linux	linux_kernel	All
linux	linux_kernel	All

References

Advisories & Patches

https://git.kernel.org/stable/c/5b4a79ba65a1ab479903fff2e604865d229b70a9 https://git.kernel.org/stable/c/7499859881488da97589f3c79cc66fa75748ad49 https://git.kernel.org/stable/c/f312367f5246e04df564d341044286e9e37a97ba https://git.kernel.org/stable/c/5b4a79ba65a1ab479903fff2e604865d229b70a9 https://git.kernel.org/stable/c/7499859881488da97589f3c79cc66fa75748ad49 https://git.kernel.org/stable/c/f312367f5246e04df564d341044286e9e37a97ba

Frequently Asked Questions

What is CVE-2023-52735? +

In the Linux kernel, the following vulnerability has been resolved: bpf, sockmap: Don't let sock_map_{close,destroy,unhash} call itself sock_map proto callbacks should never call themselves by design. Protect against bugs like [1] and break out of the recursive loop to avoid a stack overflow in favor of a resource leak. [1] https://lore.kernel.org/all/[email protected]/ It has a CVSS v3.1 base score of 9.1 (CRITICAL).

How severe is CVE-2023-52735? +

CVE-2023-52735 has a CVSS v3.1 score of 9.1 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately.

What products are affected by CVE-2023-52735? +

CVE-2023-52735 affects products from linux, specifically: linux_kernel. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2023-52735? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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