CVE-2026-23073— wifi: rsi: Fix memory corruption due to not set vif driver data size
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I. Basic Information for CVE-2026-23073
Vulnerability Information
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Vulnerability Title
wifi: rsi: Fix memory corruption due to not set vif driver data size
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于未设置驱动数据大小，可能导致内存损坏。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2026-23073
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Same Patch Batch · Linux · 2026-02-04 · 79 CVEs total
| CVE-2026-23098 | 8.8 HIGH | netrom: fix double-free in nr_route_frame() |
| CVE-2026-23077 | 7.8 HIGH | mm/vma: fix anon_vma UAF on mremap() faulted, unfaulted merge |
| CVE-2026-23074 | 7.8 HIGH | net/sched: Enforce that teql can only be used as root qdisc |
| CVE-2026-23103 | 7.8 HIGH | ipvlan: Make the addrs_lock be per port |
| CVE-2026-23066 | 7.8 HIGH | rxrpc: Fix recvmsg() unconditional requeue |
| CVE-2026-23105 | 7.8 HIGH | net/sched: qfq: Use cl_is_active to determine whether class is active in qfq_rm_from_ag |
| CVE-2026-23095 | 7.5 HIGH | gue: Fix skb memleak with inner IP protocol 0. |
| CVE-2026-23063 | uacce: ensure safe queue release with state management | |
| CVE-2026-23065 | platform/x86/amd: Fix memory leak in wbrf_record() | |
| CVE-2026-23062 | platform/x86: hp-bioscfg: Fix kernel panic in GET_INSTANCE_ID macro | |
| CVE-2026-23064 | net/sched: act_ife: avoid possible NULL deref | |
| CVE-2026-23058 | can: ems_usb: ems_usb_read_bulk_callback(): fix URB memory leak | |
| CVE-2026-23057 | vsock/virtio: Coalesce only linear skb | |
| CVE-2026-23056 | uacce: implement mremap in uacce_vm_ops to return -EPERM | |
| CVE-2025-71199 | iio: adc: at91-sama5d2_adc: Fix potential use-after-free in sama5d2_adc driver | |
| CVE-2025-71198 | iio: imu: st_lsm6dsx: fix iio_chan_spec for sensors without event detection | |
| CVE-2025-71197 | w1: therm: Fix off-by-one buffer overflow in alarms_store | |
| CVE-2026-23055 | i2c: riic: Move suspend handling to NOIRQ phase | |
| CVE-2026-23053 | NFS: Fix a deadlock involving nfs_release_folio() | |
| CVE-2026-23059 | scsi: qla2xxx: Sanitize payload size to prevent member overflow |
Showing top 20 of 79 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-43500
rxrpc: Also unshare DATA/RESPONSE packets when paged frags a - CVE-2026-43475
scsi: storvsc: Fix scheduling while atomic on PREEMPT_RT - CVE-2026-43474
fs: init flags_valid before calling vfs_fileattr_get - CVE-2026-43473
scsi: mpi3mr: Add NULL checks when resetting request and rep - CVE-2026-43472
unshare: fix unshare_fs() handling
Same vendor: Linux
- CVE-2026-43500
rxrpc: Also unshare DATA/RESPONSE packets when paged frags a - CVE-2026-43475
scsi: storvsc: Fix scheduling while atomic on PREEMPT_RT - CVE-2026-43474
fs: init flags_valid before calling vfs_fileattr_get - CVE-2026-43473
scsi: mpi3mr: Add NULL checks when resetting request and rep - CVE-2026-43472
unshare: fix unshare_fs() handling
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