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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-23073 Detail

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: rsi: Fix memory corruption due to not set vif driver data size The struct ieee80211_vif contains trailing space for vif driver data, when struct ieee80211_vif is allocated, the total memory size that is allocated is sizeof(struct ieee80211_vif) + size of vif driver data. The size of vif driver data is set by each WiFi driver as needed. The RSI911x driver does not set vif driver data size, no trailing space for vif driver data is therefore allocated past struct ieee80211_vif . The RSI911x driver does however use the vif driver data to store its vif driver data structure "struct vif_priv". An access to vif->drv_priv leads to access out of struct ieee80211_vif bounds and corruption of some memory. In case of the failure observed locally, rsi_mac80211_add_interface() would write struct vif_priv *vif_info = (struct vif_priv *)vif->drv_priv; vif_info->vap_id = vap_idx. This write corrupts struct fq_tin member struct list_head new_flows . The flow = list_first_entry(head, struct fq_flow, flowchain); in fq_tin_reset() then reports non-NULL bogus address, which when accessed causes a crash. The trigger is very simple, boot the machine with init=/bin/sh , mount devtmpfs, sysfs, procfs, and then do "ip link set wlan0 up", "sleep 1", "ip link set wlan0 down" and the crash occurs. Fix this by setting the correct size of vif driver data, which is the size of "struct vif_priv", so that memory is allocated and the driver can store its driver data in it, instead of corrupting memory around it.


Metrics

 
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CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
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URL Source(s) Tag(s)
https://git.kernel.org/stable/c/0d7c9e793e351cbbe9e06a9ca47d77b6ad288fb0 kernel.org
https://git.kernel.org/stable/c/31efbcff90884ea5f65bf3d1de01267db51ee3d1 kernel.org
https://git.kernel.org/stable/c/49ef094fdbc3526e5db2aebb404b84f79c5603dc kernel.org
https://git.kernel.org/stable/c/4f431d88ea8093afc7ba55edf4652978c5a68f33 kernel.org
https://git.kernel.org/stable/c/7761d7801f40e61069b4df3db88b36d80d089f8a kernel.org
https://git.kernel.org/stable/c/7c54d0c3e2cad4300be721ec2aecfcf8a63bc9f4 kernel.org
https://git.kernel.org/stable/c/99129d80a5d4989ef8566f434f3589f60f28042b kernel.org

Weakness Enumeration

CWE-ID CWE Name Source

Change History

2 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-23073
NVD Published Date:
02/04/2026
NVD Last Modified:
02/06/2026
Source:
kernel.org