TI-2026-31440 Aliases CVE-2026-43261 GHSA-q2m9-5gr9-rjw9

arm64: Add support for TSV110 Spectre-BHB mitigation

LOW 24Published 2026-05-06 · Updated 2026-11-06

Key facts

Attack vector: Local
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: None · None · High
Fix status: Partial Red Hat: 2 without a fix

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

Summary

In the Linux kernel, the following vulnerability has been resolved: arm64: Add support for TSV110 Spectre-BHB mitigation The TSV110 processor is vulnerable to the Spectre-BHB (Branch History Buffer) attack, which can be exploited to leak information through branch prediction side channels. This commit adds the MIDR of TSV110 to the list for software mitigation.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00128 2nd percentileScored 2026-11-07

Fix Partial Linux (Linux): 5.10.252, 5.15.202, 4.10 +10Red Hat: 2 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	5.10.105 to before 5.10.252; 5.15.28 to before 5.15.202; 4.9.310 to before 4.10; 4.14.275 to before 4.15; 4.19.236 to before 4.20; 5.4.186 to before 5.5; 5.16.14 to before 5.17	5.10.252, 5.15.202, 4.10, 4.15, 4.20, 5.5, 5.17	Patch available	CNA
Linux	Linux	5.17 and later	5.10.252, 5.15.202, 6.1.165, 6.6.128, 6.12.75, 6.18.16, 6.19.6, 7.0	Patch available	CNA

Linux VendorLinux Affected 5.10.105 to before 5.10.252; 5.15.28 to before 5.15.202; 4.9.310 to before 4.10; 4.14.275 to before 4.15; 4.19.236 to before 4.20; 5.4.186 to before 5.5; 5.16.14 to before 5.17 Fixed in 5.10.252, 5.15.202, 4.10, 4.15, 4.20, 5.5, 5.17 Patch available CNA
Linux VendorLinux Affected 5.17 and later Fixed in 5.10.252, 5.15.202, 6.1.165, 6.6.128, 6.12.75, 6.18.16, 6.19.6, 7.0 Patch available CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:o:linux:linux_kernel::::::::	5.10.105 to before 5.10.252; 5.11 to before 5.15.202; 5.16 to before 6.1.165; 6.2 to before 6.6.128; 6.7 to before 6.12.75; 6.13 to before 6.18.16; 6.19 to before 6.19.6	Vulnerable	Linux

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 5.10.105 to before 5.10.252; 5.11 to before 5.15.202; 5.16 to before 6.1.165; 6.2 to before 6.6.128; 6.7 to before 6.12.75; 6.13 to before 6.18.16; 6.19 to before 6.19.6 Vulnerable ·Linux

Remediation

Fix · CNA Linux (Linux) Fixed in 5.10.252, 5.15.202, 4.10, 4.15, 4.20, 5.5, 5.17
Fix · CNA Linux (Linux) Fixed in 5.10.252, 5.15.202, 6.1.165, 6.6.128, 6.12.75, 6.18.16, 6.19.6, 7.0

Vendor assessments

Red Hat

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

Product	Status	Plan or fix
Red Hat Enterprise Linux 10	Affected	No fix yet: Fix deferred
Red Hat Enterprise Linux 9	Affected	No fix yet: Fix deferred

Not affected: 3 products

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

Timeline

2026-10-02 Threatist record created from CVE-2026-43261
2026-10-03 Alias added: GHSA-q2m9-5gr9-rjw9
2026-11-06 CISA SSVC decision points changed

References

Patch 8

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