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Review reviewHigh

CVE-2023-53640

Linux Linux, linux kernel

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_...

CVSS
7.8
EPSS
0.19%
9.33% percentile
CISA KEV
Not listed
Published
2025.10.08
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.19%
Technical severityCVSS 7.8

Vulnerability overview

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_...

Affected product and versions

Product
Linux Linux, linux kernel
Affected versions
>= c39667ddcfc516fee084e449179d54430a558298 < 8f1512d78b5de928f4616a871e77b58fd546e651, >= c39667ddcfc516fee084e449179d54430a558298 < 8d81d3b0ed3610d24191d24f8e9e20f6775f0cc5, >= c39667ddcfc516fee084e449179d54430a558298 < f5e61e3fe799ba2fda4320af23d26d28c3302045, >= c39667ddcfc516fee084e449179d54430a558298 < 75e5fab7db0cecb6e16b22c34608f0b40a4c7cd1, >= 5.12, >= 5.12 < 5.15.114, >= 5.16 < 6.1.31, >= 6.2 < 6.3.5, 6.4
Fixed versions
5.15.114, 6.1.31, 6.3.5

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux Linux, linux kernel and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
CWE-416