TI-2021-21833 Aliases CVE-2021-47172 GHSA-mpx6-5vmm-97rr

iio: adc: ad7124: Fix potential overflow due to non sequential channel numbers

LOW 24CWE-120Published 2024-03-25 · Updated 2026-05-23

Key facts

Attack vector: Local
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: Denial of service
Confidentiality · integrity · availability: None · None · High
Fix status: Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-120 and the CVSS impact.

Summary

In the Linux kernel, the following vulnerability has been resolved: iio: adc: ad7124: Fix potential overflow due to non sequential channel numbers Channel numbering must start at 0 and then not have any holes, or it is possible to overflow the available storage. Note this bug was introduced as part of a fix to ensure we didn't rely on the ordering of child nodes. So we need to support arbitrary ordering but they all need to be there somewhere. Note I hit this when using qemu to test the rest of this series. Arguably this isn't the best fix, but it is probably the most minimal option for backporting etc. Alexandru's sign-off is here because he carried this patch in a larger set that Jonathan then applied.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00225 13th percentileScored 2026-11-07

Fix Fixed Linux (Linux): 5.4.124, 5.10.42, 5.12.9 +1

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	5.4.14 to before 5.4.124	5.4.124	Patch available	CNA
Linux	Linux	5.5 and later	5.4.124, 5.10.42, 5.12.9, 5.13	Patch available	CNA

Linux VendorLinux Affected 5.4.14 to before 5.4.124 Fixed in 5.4.124 Patch available CNA
Linux VendorLinux Affected 5.5 and later Fixed in 5.4.124, 5.10.42, 5.12.9, 5.13 Patch available CNA

CPE configurations NVD · 4

CPE	Versions	Role	Vendor
cpe:2.3:o:linux:linux_kernel::::::::	5.4.14 to before 5.4.124; 5.5 to before 5.10.42; 5.11 to before 5.12.9	Vulnerable	Linux
cpe:2.3:o:linux:linux_kernel:5.13:rc1::::::	5.13 rc1	Vulnerable	Linux
cpe:2.3:o:linux:linux_kernel:5.13:rc2::::::	5.13 rc2	Vulnerable	Linux
cpe:2.3:o:linux:linux_kernel:5.13:rc3::::::	5.13 rc3	Vulnerable	Linux

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 5.4.14 to before 5.4.124; 5.5 to before 5.10.42; 5.11 to before 5.12.9 Vulnerable ·Linux
cpe:2.3:o:linux:linux_kernel:5.13:rc1:*:*:*:*:*:* Versions 5.13 rc1 Vulnerable ·Linux
cpe:2.3:o:linux:linux_kernel:5.13:rc2:*:*:*:*:*:* Versions 5.13 rc2 Vulnerable ·Linux
cpe:2.3:o:linux:linux_kernel:5.13:rc3:*:*:*:*:*:* Versions 5.13 rc3 Vulnerable ·Linux

Remediation

Fix · CNA Linux (Linux) Fixed in 5.4.124
Fix · CNA Linux (Linux) Fixed in 5.4.124, 5.10.42, 5.12.9, 5.13

Vendor assessments

Red Hat

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

Not affected: 4 products

Red Hat Enterprise Linux 6
Red Hat Enterprise Linux 7
Red Hat Enterprise Linux 8
Red Hat Enterprise Linux 9

Timeline

2026-10-02 Threatist record created from CVE-2021-47172
2026-10-03 Alias added: GHSA-mpx6-5vmm-97rr

References

Patch 4

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

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