wifi: iwlwifi: bound aligned TLV advance in FW parser
Priority LOW 22Published · Updated
Key facts
- Attack vector
- —
- Privileges required
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- User interaction
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- Attack complexity
- —
- Impact type
- —
- Confidentiality · integrity · availability
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- Fix status
- Partial Red Hat: 6 without a fix
No CVSS vector from any source. Fix status from CNA and Red Hat.
Summary
In the Linux kernel, the following vulnerability has been resolved: wifi: iwlwifi: bound aligned TLV advance in FW parser Validate ALIGN(tlv_len, 4) against remaining parser length before consuming bytes from the firmware image. This avoids length underflow on malformed TLVs.
Why it matters now
EPSS 0.00173 6th percentileScored 2026-11-07
Fix Partial Linux (Linux): 5.10.271, 5.15.222, 6.1.189 +4Red Hat: 6 without a fix
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
Remediation
- Fix · CNA Linux (Linux) Fixed in 5.10.271, 5.15.222, 6.1.189, 6.6.158, 6.12.111, 6.18.53, 7.2
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 7 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 8 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 9 | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift Container Platform 4 | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift Container Platform 5 | Affected | No fix yet: Fix deferred |
Not affected: 1 product
- Red Hat Enterprise Linux 6
Timeline
- 2026-10-02 Threatist record created from CVE-2026-93789
- 2026-10-03 Alias added: GHSA-3qxj-gg5h-r87p
- 2026-10-03 Fix available: Linux/Linux@4cfadb2e01566bc36d42922fbe18838345087050, Linux/[email protected], Linux/[email protected] +5 · CNA
- 2026-10-03 4 new references · CNA
- 2026-11-06 Affected versions changed · Red Hat
References
Other 7
- https://git.kernel.org/stable/c/61da42fdd21d98ccb8f1ec5224659f3d09202cf4
- https://git.kernel.org/stable/c/8c332d45b736d41301b7e07f322785d821265dbc
- https://git.kernel.org/stable/c/ce709fcab5e1d4df6d4ba980736dc5908502a40f
- https://git.kernel.org/stable/c/4cfadb2e01566bc36d42922fbe18838345087050
- https://git.kernel.org/stable/c/528fa9eb14c209533ca26958b76da55e0ce239d8
- https://git.kernel.org/stable/c/7aa9097623afb694bc25382a62e14d8e82bf002f
- https://git.kernel.org/stable/c/acad742714bdc70e7fd7f234323807c596828213
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- 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
Sources
- CVE-2026-93789 · CVE Program
- CVE-2026-93789 · NVD
- FIRST EPSS
- GHSA-3qxj-gg5h-r87p · GitHub Advisory Database · CC BY 4.0
- CVE-2026-93789 · Red Hat security data · CC BY 4.0
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