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CVE-2023-53640

7.3 · HIGH

In the Linux kernel, the following vulnerability has been resolved: ASoC: lpass: Fix for KASAN use_after_free out of bounds When we run syzkaller we get below Out of Bounds error.

Published Oct 7, 2025CWE-416EPSS 0.21%

Overview

CVE-2023-53640 is a high-severity vulnerability. It was published on October 7, 2025 and has a CVSS 3.1 base score of 7.3 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.3, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

In the Linux kernel, the following vulnerability has been resolved:

ASoC: lpass: Fix for KASAN use_after_free out of bounds

When we run syzkaller we get below Out of Bounds error.

"KASAN: slab-out-of-bounds Read in regcache_flat_read"

Below is the backtrace of the issue:

BUG: KASAN: slab-out-of-bounds in regcache_flat_read+0x10c/0x110

Read of size 4 at addr ffffff8088fbf714 by task syz-executor.4/14144

CPU: 6 PID: 14144 Comm: syz-executor.4 Tainted: G W

Hardware name: Qualcomm Technologies, Inc. sc7280 CRD platform (rev5+) (DT)

Call trace:

dump_backtrace+0x0/0x4ec

show_stack+0x34/0x50

dump_stack_lvl+0xdc/0x11c

print_address_description+0x30/0x2d8

kasan_report+0x178/0x1e4

__asan_report_load4_noabort+0x44/0x50

regcache_flat_read+0x10c/0x110

regcache_read+0xf8/0x5a0

_regmap_read+0x45c/0x86c

_regmap_update_bits+0x128/0x290

regmap_update_bits_base+0xc0/0x15c

snd_soc_component_update_bits+0xa8/0x22c

snd_soc_component_write_field+0x68/0xd4

tx_macro_put_dec_enum+0x1d0/0x268

snd_ctl

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/75e5fab7db0cecb6e16b22c34608f0b40a4c7cd1Refgit.kernel.org/stable/c/8d81d3b0ed3610d24191d24f8e9e20f6775f0cc5Refgit.kernel.org/stable/c/8f1512d78b5de928f4616a871e77b58fd546e651Refgit.kernel.org/stable/c/f5e61e3fe799ba2fda4320af23d26d28c3302045

How CyberStrike helps

Frequently asked questions

What is CVE-2023-53640?

CVE-2023-53640 is a high-severity vulnerability. It was published on October 7, 2025 and has a CVSS 3.1 base score of 7.3 (HIGH).

How severe is CVE-2023-53640?

This vulnerability has a CVSS 3.1 base score of 7.3, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2023-53640?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2023-53640?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-53640 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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