Broadcast station double deallocation in Linux kernel iwlegacy driver
Key facts
- Attack vector
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- Privileges required
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- User interaction
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- Attack complexity
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- Impact type
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- Confidentiality · integrity · availability
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- Fix status
- Fixed
No CVSS vector from any source. Fix status from CNA.
Summary
The Linux kernel wifi iwlegacy driver is affected from 4.7 and fixed in the versions listed in the solution. On the error path of __il4965_up(), clearing only the active flag leaves broadcast stations marked as allocated, so __il4965_down() deallocates them a second time. This can occur when RF_KILL is toggled during driver startup.
Written with Claude Haiku 5.5 from the sources below · 2026-11-06
Description from the CNA
In the Linux kernel, the following vulnerability has been resolved: wifi: iwlegacy: fix broadcast stations deallocation On the error path of __il4965_up(), il_dealloc_bcast_stations() clears only IL_STA_UCODE_ACTIVE, leaving IL_STA_BCAST set. This causes the same broadcast stations to be deallocated again by __il4965_down(). This can occur when RF_KILL is toggled during driver startup. To fix clear the entire 'used' field, since we will not do any other operations on the station.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
Remediation
Update the Linux kernel to 5.10.271, 5.15.222, 6.1.189, 6.6.158, 6.12.112, 6.18.54, 7.2.8 or 7.3, depending on the release branch in use.
Written with Claude Haiku 5.5 from the sources below · 2026-11-06
- Fix · CNA Linux (Linux) Fixed in 5.10.271, 5.15.222, 6.1.189, 6.6.158, 6.12.112, 6.18.54, 7.2.8, 7.3
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
Not affected: 7 products
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
- Red Hat OpenShift Container Platform 4
- Red Hat OpenShift Container Platform 5
Timeline
- 2026-10-06 Threatist record created from CVE-2026-98195
- 2026-10-06 Alias added: GHSA-9fj7-g454-67r4
- 2026-10-09 Affected versions changed · Red Hat
- 2026-10-09 CVSS score added · Red Hat
- 2026-10-19 Fix available: Linux/[email protected] · CNA
- 2026-11-06 Affected versions changed · Red Hat
References
Other 8
- https://git.kernel.org/stable/c/275d474a4b4bd4e73b18b1452f12e78806a8843a
- https://git.kernel.org/stable/c/526fdd45548e22eee50ee1062abd88269d9f32e0
- https://git.kernel.org/stable/c/c9a116d691364cd7f59d8329b395adcaf826d5c6
- https://git.kernel.org/stable/c/85d847ff71fe736cbc15ada321256818e630e205
- https://git.kernel.org/stable/c/1d84c2a3de449aceb94ed79eaefecdf1bedb6468
- https://git.kernel.org/stable/c/55d34422c0d91436983028fd3c1546a1c2bee55f
- https://git.kernel.org/stable/c/a9176fe666af1730cab92350f9c8cf67ebf14439
- https://git.kernel.org/stable/c/b5526b780f8b297a76030410b96ba29153afb98f
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Sources
- CVE-2026-98195 · CVE Program
- CVE-2026-98195 · NVD
- FIRST EPSS
- GHSA-9fj7-g454-67r4 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-98195 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences