CVE-2026-43345

net: ipa: fix event ring index not programmed for IPA v5.0+

State: Published
Severity: 7.5 High
Published: May 8, 2026
Updated: Aug 5, 2026
Reserved: May 1, 2026

Description

In the Linux kernel, the following vulnerability has been resolved:

net: ipa: fix event ring index not programmed for IPA v5.0+

For IPA v5.0+, the event ring index field moved from CH_C_CNTXT_0 to CH_C_CNTXT_1. The v5.0 register definition intended to define this field in the CH_C_CNTXT_1 fmask array but used the old identifier of ERINDEX instead of CH_ERINDEX.

Without a valid event ring, GSI channels could never signal transfer completions. This caused gsi_channel_trans_quiesce() to block forever in wait_for_completion().

At least for IPA v5.2 this resolves an issue seen where runtime suspend, system suspend, and remoteproc stop all hanged forever. It also meant the IPA data path was completely non functional.

Scores

CVSS	Score	Vector	Source
3.1	7.5 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	Linux

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	faf0678ec8a0aa9039d8b188d012206abd67dd5c to before ae8343a19ccb051d519dbb3a9082ddea9f0551d3Affected faf0678ec8a0aa9039d8b188d012206abd67dd5c to before 2bf18b643c4656413f7cfd5615af60a6b4e261daAffected faf0678ec8a0aa9039d8b188d012206abd67dd5c to before 2d2dc166d55148cfcf8ae67b415f8d6d110e6fcaAffected faf0678ec8a0aa9039d8b188d012206abd67dd5c to before 34c988bb04cbdf093d2134e179433da49ffcd044Affected faf0678ec8a0aa9039d8b188d012206abd67dd5c to before 56007972c0b1e783ca714d6f1f4d6e66e531d21fAffected
LinuxLinux	6.4Affected before 6.4Not affected 6.6.136 through 6.6.Not affected 6.12.83 through 6.12.Not affected 6.18.24 through 6.18.Not affected 6.19.14 through 6.19.Not affected 7.0 and laterNot affected

Product

Versions

LinuxLinux

faf0678ec8a0aa9039d8b188d012206abd67dd5c to before ae8343a19ccb051d519dbb3a9082ddea9f0551d3Affected
faf0678ec8a0aa9039d8b188d012206abd67dd5c to before 2bf18b643c4656413f7cfd5615af60a6b4e261daAffected
faf0678ec8a0aa9039d8b188d012206abd67dd5c to before 2d2dc166d55148cfcf8ae67b415f8d6d110e6fcaAffected
faf0678ec8a0aa9039d8b188d012206abd67dd5c to before 34c988bb04cbdf093d2134e179433da49ffcd044Affected
faf0678ec8a0aa9039d8b188d012206abd67dd5c to before 56007972c0b1e783ca714d6f1f4d6e66e531d21fAffected

LinuxLinux

6.4Affected
before 6.4Not affected
6.6.136 through 6.6.*Not affected
6.12.83 through 6.12.*Not affected
6.18.24 through 6.18.*Not affected
6.19.14 through 6.19.*Not affected
7.0 and laterNot affected

References

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.