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Review reviewHigh

CVE-2023-53057

Linux Linux, linux kernel

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: HCI: Fix global-out-of-bounds To loop a variable-length array, hci_init_stage_sync(stage) considers that stage[i] is valid as long as stage[i-1].func is valid. Thus, the last element of stage[].func should be intentionally invalid as hci_init0[], le_init2[], and others did. However, amp_init1[] and amp_init2[] have no invalid element, letting hci_init_stage_sync() keep accessing amp_init1[] over its valid range. This patch fixes this by adding {} in the last of amp_init1[] and amp_init2[]. =======================...

CVSS
7.1
EPSS
0.20%
9.61% percentile
CISA KEV
Not listed
Published
2025.05.03
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.20%
Technical severityCVSS 7.1

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: HCI: Fix global-out-of-bounds To loop a variable-length array, hci_init_stage_sync(stage) considers that stage[i] is valid as long as stage[i-1].func is valid. Thus, the last element of stage[].func should be intentionally invalid as hci_init0[], le_init2[], and others did. However, amp_init1[] and amp_init2[] have no invalid element, letting hci_init_stage_sync() keep accessing amp_init1[] over its valid range. This patch fixes this by adding {} in the last of amp_init1[] and amp_init2[]. =======================...

Affected product and versions

Product
Linux Linux, linux kernel
Affected versions
>= d0b137062b2de75b264b84143d21c98abc5f5ad2 < b3168abd24245aa0775c5a387dcf94d36ca7e738, >= d0b137062b2de75b264b84143d21c98abc5f5ad2 < 8497222b22b591c6b2d106e0e3c1672ffe4e10e0, >= d0b137062b2de75b264b84143d21c98abc5f5ad2 < bce56405201111807cc8e4f47c6de3e10b17c1ac, >= 5.17, >= 5.17 < 6.1.22, >= 6.2 < 6.2.9, 6.3
Fixed versions
6.1.22, 6.2.9

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:N/A:H
CWE
CWE-125