TI-2026-31427 Aliases CVE-2026-43248 GHSA-xpcf-mwvf-62v9

vhost: move vdpa group bound check to vhost_vdpa

LOW 35CWE-787Published 2026-05-06 · Updated 2026-10-30

Key facts

Attack vector: Local
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: Partial Red Hat: 10 fixed, 1 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-787 and the CVSS impact.

Summary

In the Linux kernel, the following vulnerability has been resolved: vhost: move vdpa group bound check to vhost_vdpa Remove duplication by consolidating these here. This reduces the posibility of a parent driver missing them. While we're at it, fix a bug in vdpa_sim where a valid ASID can be assigned to a group equal to ngroups, causing an out of bound write.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00164 5th percentileScored 2026-11-07

Fix Partial Linux (Linux): 6.1.191, 6.6.160, 6.12.75 +3Red Hat: 2 advisoriesRed Hat: 10 fixed, 1 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Total

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	5.19 and later	6.1.191, 6.6.160, 6.12.75, 6.18.16, 6.19.6, 7.0	Patch available	CNA

Linux VendorLinux Affected 5.19 and later Fixed in 6.1.191, 6.6.160, 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::::::::	5.19 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 5.19 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 6.1.191, 6.6.160, 6.12.75, 6.18.16, 6.19.6, 7.0

Red Hat 2 advisories

RHSA-2026:67470 Released 2026-09-15 · Red Hat rating Important
kernel security, bug fix, and enhancement update
- Red Hat Enterprise Linux AppStream (v. 9) kernel-64k-debug-devel-5.14.0-687.48.1.el9_8, kernel-64k-debug-devel-matched-5.14.0-687.48.1.el9_8, kernel-64k-devel-5.14.0-687.48.1.el9_8 +12
- Red Hat Enterprise Linux BaseOS (v. 9) kernel-5.14.0-687.48.1.el9_8, kernel-64k-5.14.0-687.48.1.el9_8, kernel-64k-core-5.14.0-687.48.1.el9_8 +28
- Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) kernel-tools-libs-devel-5.14.0-687.48.1.el9_8, libperf-5.14.0-687.48.1.el9_8
- Red Hat Enterprise Linux Real Time (v. 9) kernel-rt-5.14.0-687.48.1.el9_8, kernel-rt-64k-5.14.0-687.48.1.el9_8, kernel-rt-64k-core-5.14.0-687.48.1.el9_8 +21
- Red Hat Enterprise Linux Real Time for NFV (v. 9) kernel-rt-5.14.0-687.48.1.el9_8, kernel-rt-core-5.14.0-687.48.1.el9_8, kernel-rt-debug-5.14.0-687.48.1.el9_8 +9
RHSA-2026:67471 Released 2026-09-15 · Red Hat rating Important
kernel security, bug fix, and enhancement update
- Red Hat Enterprise Linux AppStream (v. 10) kernel-64k-debug-devel-6.12.0-211.55.1.el10_2, kernel-64k-debug-devel-matched-6.12.0-211.55.1.el10_2, kernel-64k-devel-6.12.0-211.55.1.el10_2 +12
- Red Hat Enterprise Linux BaseOS (v. 10) kernel-6.12.0-211.55.1.el10_2, kernel-64k-6.12.0-211.55.1.el10_2, kernel-64k-core-6.12.0-211.55.1.el10_2 +29
- Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) kernel-tools-libs-devel-6.12.0-211.55.1.el10_2, libperf-6.12.0-211.55.1.el10_2
- Red Hat Enterprise Linux Real Time (v. 10) kernel-rt-6.12.0-211.55.1.el10_2, kernel-rt-64k-6.12.0-211.55.1.el10_2, kernel-rt-64k-core-6.12.0-211.55.1.el10_2 +21
- Red Hat Enterprise Linux Real Time for NFV (v. 10) kernel-rt-6.12.0-211.55.1.el10_2, kernel-rt-core-6.12.0-211.55.1.el10_2, kernel-rt-debug-6.12.0-211.55.1.el10_2 +9

Vendor assessments

Red Hat

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

Product	Status	Plan or fix
Red Hat Enterprise Linux 9	Affected	No fix yet
Red Hat Enterprise Linux AppStream (v. 10)	Fixed	RHSA-2026:67471
Red Hat Enterprise Linux AppStream (v. 9)	Fixed	RHSA-2026:67470
Red Hat Enterprise Linux BaseOS (v. 10)	Fixed	RHSA-2026:67471
Red Hat Enterprise Linux BaseOS (v. 9)	Fixed	RHSA-2026:67470
Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)	Fixed	RHSA-2026:67471
Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)	Fixed	RHSA-2026:67470
Red Hat Enterprise Linux Real Time (v. 10)	Fixed	RHSA-2026:67471
Red Hat Enterprise Linux Real Time (v. 9)	Fixed	RHSA-2026:67470
Red Hat Enterprise Linux Real Time for NFV (v. 10)	Fixed	RHSA-2026:67471
Red Hat Enterprise Linux Real Time for NFV (v. 9)	Fixed	RHSA-2026:67470

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-2026-43248
2026-10-03 Alias added: GHSA-xpcf-mwvf-62v9
2026-10-16 CISA SSVC decision points changed
2026-10-19 Weakness changed · CISA ADP
2026-10-21 Fix available: Linux/Linux@566899af053246406f2faf931044d2b0af8f34d2, Linux/[email protected] · CNA
2026-10-21 1 new reference · CNA
2026-10-30 Fix available: Linux/[email protected], Linux/Linux@69ec8dd6696069c2f18430d0e05f81d604484ee8 · CNA
2026-10-30 1 new reference · CNA

References

Patch 4

Other 2

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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