CVE-2023-53386: linux kernel Use-After-Free — Fix

Description

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: Fix potential use-after-free when clear keys Similar to commit c5d2b6fa26b5 ("Bluetooth: Fix use-after-free in hci_remove_ltk/hci_remove_irk"). We can not access k after kfree_rcu() call.

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CVSS v3.1 Score

7.8

HIGH

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

Weakness Type (CWE)

CWE-416 Use After Free

Affected Products

Vendor	Product	Versions
linux	linux_kernel	5.7 — 5.10.195
linux	linux_kernel	5.11 — 5.15.132
linux	linux_kernel	5.16 — 6.1.53
linux	linux_kernel	6.2 — 6.4.16
linux	linux_kernel	6.5 — 6.5.3

References

Advisories & Patches

https://git.kernel.org/stable/c/35cc42f04bc49f0656f6840cb7451b3df6049649 https://git.kernel.org/stable/c/3673952cf0c6cf81b06c66a0b788abeeb02ff3ae https://git.kernel.org/stable/c/942d8cefb022f384d5424f8b90c7878f3f93726f https://git.kernel.org/stable/c/94617b736c25091b60e514e2e7aeafcbbee6b700 https://git.kernel.org/stable/c/da19f35868dfbecfff4f81166c054d2656cb1be4 https://git.kernel.org/stable/c/e87da6a0ac6e631454e7da53a76aa9fe44aaa5dd

Frequently Asked Questions

What is CVE-2023-53386? +

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: Fix potential use-after-free when clear keys Similar to commit c5d2b6fa26b5 ("Bluetooth: Fix use-after-free in hci_remove_ltk/hci_remove_irk"). We can not access k after kfree_rcu() call. It has a CVSS v3.1 base score of 7.8 (HIGH).

How severe is CVE-2023-53386? +

CVE-2023-53386 has a CVSS v3.1 score of 7.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2023-53386? +

CVE-2023-53386 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-2023-53386? +

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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