TI-2021-02536 Aliases CVE-2021-3588 GHSA-3h8m-q4x3-3fhw

memory contents disclosure in cli_feat_read_cb

LOW 16CWE-125Published 2021-06-10 · Updated 2024-09-16

Key facts

Attack vector: Local
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: Information disclosure
Confidentiality · integrity · availability: Low · None · None
Fix status: Partial Red Hat: 3 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-125 and the CVSS impact.

Summary

The cli_feat_read_cb() function in src/gatt-database.c does not perform bounds checks on the 'offset' variable before using it as an index into an array for reading.

Why it matters now

EPSS 0.0045 39th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix Partial BlueZ (BlueZ): 5.56Red Hat: 3 without a fix

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
BlueZ	BlueZ	before 5.56	5.56	Patch available	CNA

BlueZ VendorBlueZ Affected before 5.56 Fixed in 5.56 Patch available CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:bluez:bluez::::::::	before 5.56	Vulnerable	BlueZ

cpe:2.3:a:bluez:bluez:*:*:*:*:*:*:*:* Versions before 5.56 Vulnerable ·BlueZ

Remediation

Fix · CNA BlueZ (BlueZ) Fixed in 5.56

Vendor assessments

Red Hat

Red Hat rating: Low. Red Hat's page for this CVE →

Product	Status	Plan or fix
Red Hat Enterprise Linux 6	Affected	No fix planned: Out of support scope
Red Hat Enterprise Linux 7	Affected	No fix planned: Out of support scope
Red Hat Enterprise Linux 8	Affected	No fix yet

Not affected: 1 product

Red Hat Enterprise Linux 9

Timeline

2026-10-02 Threatist record created from CVE-2021-3588
2026-10-03 Alias added: GHSA-3h8m-q4x3-3fhw

References

Exploit 1

https://github.com/bluez/bluez/issues/70

Advisory 1

GLSA-202209-16

TI-2020-16504 In BlueZ before 5.55, a double free was found in the gatttool disconnect_cb() routine… CVSS 3.1HIGH 8.6
TI-2024-08171 Improper access control in BlueZ CVSS 3.1HIGH 8.8
TI-2022-00141 Memory corruption in bluez CVSS 3.1HIGH 8.8
TI-2021-19345 An issue was discovered in gatt-database.c in BlueZ 5.61. CVSS 3.1CRITICAL 9.1
TI-2019-06435 A heap-based buffer overflow was discovered in bluetoothd in BlueZ through 5.48. CVSS 3.1HIGH 8.8
TI-2023-27461 Heap-based buffer overflow in BlueZ CVSS 3.1HIGH 8.0

See all 36 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences