TI-2021-22263 Aliases CVE-2021-47620 GHSA-g2r9-fvrv-f652

Bluetooth: refactor malicious adv data check

LOW 35CWE-125Published 2024-06-20 · Updated 2026-08-05

Key facts

Attack vector: Adjacent network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: High · None · High
Fix status: Partial Red Hat: 4 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat.

Summary

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: refactor malicious adv data check Check for out-of-bound read was being performed at the end of while num_reports loop, and would fill journal with false positives. Added check to beginning of loop processing so that it doesn't get checked after ptr has been advanced.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00324 25th percentileScored 2026-11-07

Fix Partial Linux (Linux): 4.4.302, 4.9.300, 4.14.265 +5Red Hat: 4 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Linux	Linux	4.4.300 to before 4.4.302; 4.9.298 to before 4.9.300; 4.14.263 to before 4.14.265; 4.19.226 to before 4.19.228; 5.4.174 to before 5.4.176; 5.10.94 to before 5.10.96; 5.15.17 to before 5.15.19; 5.16.3 to before 5.16.5	4.4.302, 4.9.300, 4.14.265, 4.19.228, 5.4.176, 5.10.96, 5.15.19, 5.16.5	Patch available	CNA

Linux VendorLinux Affected 4.4.300 to before 4.4.302; 4.9.298 to before 4.9.300; 4.14.263 to before 4.14.265; 4.19.226 to before 4.19.228; 5.4.174 to before 5.4.176; 5.10.94 to before 5.10.96; 5.15.17 to before 5.15.19; 5.16.3 to before 5.16.5 Fixed in 4.4.302, 4.9.300, 4.14.265, 4.19.228, 5.4.176, 5.10.96, 5.15.19, 5.16.5 Patch available CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:o:linux:linux_kernel::::::::	before 4.4.302; 4.5 to before 4.9.300; 4.10 to before 4.14.265; 4.15 to before 4.19.228; 4.20 to before 5.4.176; 5.5 to before 5.10.96; 5.11 to before 5.15.19; 5.16 to before 5.16.5	Vulnerable	Linux

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions before 4.4.302; 4.5 to before 4.9.300; 4.10 to before 4.14.265; 4.15 to before 4.19.228; 4.20 to before 5.4.176; 5.5 to before 5.10.96; 5.11 to before 5.15.19; 5.16 to before 5.16.5 Vulnerable ·Linux

Remediation

Fix · CNA Linux (Linux) Fixed in 4.4.302, 4.9.300, 4.14.265, 4.19.228, 5.4.176, 5.10.96, 5.15.19, 5.16.5

Vendor assessments

Red Hat

Red Hat rating: Moderate. 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
Red Hat Enterprise Linux 9	Affected	No fix yet

Timeline

2026-10-02 Threatist record created from CVE-2021-47620
2026-10-03 Alias added: GHSA-g2r9-fvrv-f652

References

Patch 9

TI-2025-26358 tls: fix handling of zero-length records on the rx_list KEVCVSS 3.1CRITICAL 9.8
TI-2026-38352 netfilter: bridge: make ebt_snat ARP rewrite writable KEVCVSS 3.1HIGH 8.8
TI-2013-05264 The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the… KEVCVSS 3.1HIGH 8.8
TI-2022-00125 Integer overflow in kernel KEVCVSS 3.1HIGH 8.4
TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
TI-2021-05514 Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACE KEVCVSS 3.1HIGH 8.3

See all 15278 →

Sources

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