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

wifi: rsi: fix heap OOB write on key removal

When a key is removed (data == NULL), rsi_hal_load_key() runs:

memset(&set_key[FRAME_DESC_SZ], 0, frame_len - FRAME_DESC_SZ);

set_key is a struct rsi_set_key *, so the subscript is scaled by
sizeof(struct rsi_set_key) (160 bytes): &set_key[FRAME_DESC_SZ] is
skb->data + 2560, and the memset writes 144 zero bytes starting
2.4KB past the end of the 160-byte skb data buffer, corrupting
unrelated heap objects. The intended byte offset would have been
(u8 *)set_key + FRAME_DESC_SZ.

The write fires on every DISABLE_KEY callback, so plain disconnects,
roams and interface teardowns trigger it on real networks.

The memset is redundant: the whole buffer is zeroed right after
allocation, so the frame sent to the device is byte-identical
without it. Drop the else branch; normal operation is unaffected.

Discovered by Atuin - Automated Vulnerability Discovery Engine.
Published: 2026-10-14
Score: 5.5 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
Debian DSA Debian DSA DSA-6568-1 linux security update
History

Sat, 17 Oct 2026 00:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-119

Fri, 16 Oct 2026 12:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-787
References
Metrics threat_severity

None

cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

threat_severity

Moderate


Fri, 16 Oct 2026 07:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-119

Thu, 15 Oct 2026 23:00:00 +0000

Type Values Removed Values Added
Weaknesses CWE-788

Thu, 15 Oct 2026 04:00:00 +0000

Type Values Removed Values Added
Weaknesses CWE-788

Wed, 14 Oct 2026 13:45:00 +0000

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: wifi: rsi: fix heap OOB write on key removal When a key is removed (data == NULL), rsi_hal_load_key() runs: memset(&set_key[FRAME_DESC_SZ], 0, frame_len - FRAME_DESC_SZ); set_key is a struct rsi_set_key *, so the subscript is scaled by sizeof(struct rsi_set_key) (160 bytes): &set_key[FRAME_DESC_SZ] is skb->data + 2560, and the memset writes 144 zero bytes starting 2.4KB past the end of the 160-byte skb data buffer, corrupting unrelated heap objects. The intended byte offset would have been (u8 *)set_key + FRAME_DESC_SZ. The write fires on every DISABLE_KEY callback, so plain disconnects, roams and interface teardowns trigger it on real networks. The memset is redundant: the whole buffer is zeroed right after allocation, so the frame sent to the device is byte-identical without it. Drop the else branch; normal operation is unaffected. Discovered by Atuin - Automated Vulnerability Discovery Engine.
Title wifi: rsi: fix heap OOB write on key removal
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

Subscriptions

Linux Linux Kernel
cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-10-14T13:27:41.799Z

Reserved: 2026-09-25T10:25:14.347Z

Link: CVE-2026-98407

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-10-14T14:17:51.853

Modified: 2026-10-14T14:17:51.853

Link: CVE-2026-98407

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-10-14T00:00:00Z

Links: CVE-2026-98407 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-10-17T02:15:14Z

Weaknesses