net: ipa: fix event ring index not programmed for IPA v5.0+
Published May 8, 2026
7.5
HIGHCVSS 3.1
EPSS 0.63%
Description
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.
Affected products
-
- Version StatusaffectedConstraints
- Version StatusaffectedConstraints
- Version StatusaffectedConstraints
- Version StatusaffectedConstraints
- Version StatusaffectedConstraints
- Version
-
- Version 6.4StatusaffectedConstraints-
- Version 0StatusunaffectedConstraints<6.4
- Version 6.12.83StatusunaffectedConstraints<=6.12.*
- Version 6.18.24StatusunaffectedConstraints<=6.18.*
- Version 6.19.14StatusunaffectedConstraints<=6.19.*
- Version 6.6.136StatusunaffectedConstraints<=6.6.*
- Version 7.0StatusunaffectedConstraints<=*
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Linux | Linux | unaffected |
| ||||||||||||||||||||||||
| Linux | Linux | affected |
|
- ≥ 6.4 · < 6.6.136
- ≥ 6.7 · < 6.12.83
- ≥ 6.13 · < 6.18.24
- ≥ 6.19 · < 6.19.14
- 7.0
- 7.0
- 7.0
- 7.0
- 7.0
- 7.0
- 7.0
No data.
Red Hat Enterprise Linux 10
kernel
Fix deferred
Red Hat Enterprise Linux 6
kernel
Not affected
Red Hat Enterprise Linux 7
kernel
Not affected
Red Hat Enterprise Linux 7
kernel-rt
Not affected
Red Hat Enterprise Linux 8
kernel
Not affected
Red Hat Enterprise Linux 8
kernel-rt
Not affected
Red Hat Enterprise Linux 9
kernel
Not affected
Red Hat Enterprise Linux 9
kernel-rt
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 10 | kernel | Fix deferred | n/a |
| Red Hat Enterprise Linux 6 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 7 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 7 | kernel-rt | Not affected | n/a |
| Red Hat Enterprise Linux 8 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 8 | kernel-rt | Not affected | n/a |
| Red Hat Enterprise Linux 9 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 9 | kernel-rt | Not affected | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
References (10)
- https://access.redhat.com/security/cve/CVE-2026-43345 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2468040 Issue Tracking
- https://git.kernel.org/stable/c/2bf18b643c4656413f7cfd5615af60a6b4e261da Patch
- https://git.kernel.org/stable/c/2d2dc166d55148cfcf8ae67b415f8d6d110e6fca Patch
- https://git.kernel.org/stable/c/34c988bb04cbdf093d2134e179433da49ffcd044 Patch
- https://git.kernel.org/stable/c/56007972c0b1e783ca714d6f1f4d6e66e531d21f Patch
- https://git.kernel.org/stable/c/ae8343a19ccb051d519dbb3a9082ddea9f0551d3 Patch
- https://lore.kernel.org/linux-cve-announce/2026050837-CVE-2026-43345-3cfe@gregkh/T
- https://nvd.nist.gov/vuln/detail/CVE-2026-43345
- https://www.cve.org/CVERecord?id=CVE-2026-43345
Change history (0)
No recorded changes yet.