CVE-2021-47251

Summary: CVE-2021-47251 affects the Linux kernel’s wireless stack via mac80211, where the skb length check in ieee80211_scan_rx() was corrected. The fix replaces hard-coded header-length constants with dynamic calculation based on the frame type, preventing a validation WARN_ON in cfg80211 later....

CVE-2021-47251

In the Linux kernel, the following vulnerability has been resolved: mac80211: fix skb length check in ieee80211scanrx Replace hard-coded compile-time constants for header length check with dynamic determination based on the frame type. Otherwise, we hit a validation WARNON in cfg80211 later. styl...

CVE-2021-47225 mac80211: fix deadlock in AP/VLAN handling

In the Linux kernel, the following vulnerability has been resolved: mac80211: fix deadlock in AP/VLAN handling Syzbot reports that when you have APVLAN interfaces that are up and close the AP interface they belong to, we get a deadlock. No surprise - since we devclose them with the wiphy mutex...

CVE-2021-47225

The Linux kernel 's mac80211 module contains a vulnerability where closing an active AP interface while its associated AP_VLAN interfaces are still up can trigger a deadlock . This occurs because the system attempts to acquire the wiphy mutex while it is already held during the dev_close() operat...

CVE-2021-47225

In the Linux kernel, the following vulnerability has been resolved: mac80211: fix deadlock in AP/VLAN handling Syzbot reports that when you have APVLAN interfaces that are up and close the AP interface they belong to, we get a deadlock. No surprise - since we devclose them with the wiphy mutex...

SUSE CVE-2024-35789

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: check/clear fast rx for non-4addr sta VLAN changes When moving a station out of a VLAN and deleting the VLAN afterwards, the fastrx entry still holds a pointer to the VLAN's netdev, which can cause use-after-free...

SUSE CVE-2024-35838

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: fix potential sta-link leak When a station is allocated, links are added but not set to valid yet e.g. during connection to an AP MLD, we might remove the station without ever marking links valid, and leak them. F...

Linux kernel 安全漏洞

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. A security vulnerability exists in Linux kernel, which stems from a vulnerability in the wifi:mac80211 module...

CVE-2021-47396: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: mac80211-hwsim: fix late beacon hrtimer handling Thomas explained in https://lore.kernel.org/r/87mtoeb4hb.ffs@tglx that our handling of the hrtimer here is wrong: If the timer fires late e.g. due to vCPU scheduling, as reported b...

CVE-2023-52832: Improper Restriction of Power Consumption

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: don't return unset power in ieee80211gettxpower We can get a UBSAN warning if ieee80211gettxpower returns the INTMIN value mac80211 internally uses for "unset power level". UBSAN: signed-integer-overflow in...

Linux kernel 安全漏洞

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. A security vulnerability exists in the Linux kernel that stems from the mac80211-hwsim module that delays the processing of hrtimer...

CVE-2021-47395: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: mac80211: limit injected vht mcs/nss in ieee80211parsetxradiotap Limit max values for vht mcs and nss in ieee80211parsetxradiotap routine in order to fix the following warning reported by syzbot: WARNING: CPU: 0 PID: 10717 at...

Linux kernel 安全漏洞

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. A security vulnerability exists in Linux kernel that originates from a mac80211 module restriction to inject vhtmcs/nss in ieee80211parsetxradiotap...

CVE-2021-47225: Improper Locking

In the Linux kernel, the following vulnerability has been resolved: mac80211: fix deadlock in AP/VLAN handling Syzbot reports that when you have APVLAN interfaces that are up and close the AP interface they belong to, we get a deadlock. No surprise - since we devclose them with the wiphy mutex...

Ubuntu: Security Advisory (USN-6777-2)

The remote host is missing an update for the SPDX-FileCopyrightText: 2024 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

CVE-2021-47388: Use After Free

In the Linux kernel, the following vulnerability has been resolved: mac80211: fix use-after-free in CCMP/GCMP RX When PN checking is done in mac80211, for fragmentation we need to copy the PN to the RX struct so we can later use it to do a comparison, since commit bf30ca922a0c "mac80211: check...

CVE-2021-47251: Improper Validation of Specified Quantity in Input

In the Linux kernel, the following vulnerability has been resolved: mac80211: fix skb length check in ieee80211scanrx Replace hard-coded compile-time constants for header length check with dynamic determination based on the frame type. Otherwise, we hit a validation WARNON in cfg80211 later. styl...

Ubuntu 20.04 LTS / 22.04 LTS : Linux kernel vulnerabilities (USN-6775-2)

The remote Ubuntu 20.04 LTS / 22.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-6775-2 advisory. Zheng Wang discovered that the Broadcom FullMAC WLAN driver in the Linux kernel contained a race condition during device removal, leading to ...

USN-6777-2: Linux kernel (Azure) vulnerabilities

Zheng Wang discovered that the Broadcom FullMAC WLAN driver in the Linux kernel contained a race condition during device removal, leading to a use- after-free vulnerability. A physically proximate attacker could possibly use this to cause a denial of service system crash. CVE-2023-47233 Several...

CVE-2024-35838

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: fix potential sta-link leak When a station is allocated, links are added but not set to valid yet e.g. during connection to an AP MLD, we might remove the station without ever marking links valid, and leak them. F...