CVE-2021-47396

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-2021-47396 mac80211-hwsim: fix late beacon hrtimer handling

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-2021-47396

CVE-2021-47396 is a Linux kernel issue affecting mac80211-hwsim beacon timing. The root cause is improper late hrtimer handling: when a timer fires late, the code re-arms for the next deadline, which can already be in the past, causing repeated misalignment and potential stalls. The fix, as descr...

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...

kernel: wifi: mac80211_hwsim: Fix possible NULL dereference

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211hwsim: Fix possible NULL dereference In a call to mac80211hwsimselecttxlink the sta pointer might be NULL, thus need to check that it is not NULL before accessing it...

kernel: wifi: mac80211_hwsim: drop short frames

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211hwsim: drop short frames While technically some control frames like ACK are shorter and end after Address 1, such frames shouldn't be forwarded through wmediumd or similar userspace, so require the full 3-address...

PT-2025-37651

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A flaw exists in the Linux kernel where a NULL dereference may occur within the mac80211 hwsim select tx link function. This happens when the sta pointer is NULL, leading to a potential...

GSD-2021-1001722 mac80211-hwsim: fix late beacon hrtimer handling

mac80211-hwsim: fix late beacon hrtimer handling This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.14.10 by commit...

UVI-2021-1001595 mac80211-hwsim: fix late beacon hrtimer handling

mac80211-hwsim: fix late beacon hrtimer handling This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.4.151 by commit...

GSD-2021-1001595 mac80211-hwsim: fix late beacon hrtimer handling

mac80211-hwsim: fix late beacon hrtimer handling This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.4.151 by commit...

kernel: Memory leak in drivers/net/wireless/mac80211_hwsim.c:hwsim_new_radio_nl() can lead to potential denial of service

The Linux kernel is vulnerable to a memory leak in the drivers/net/wireless/mac80211hwsim.c:hwsimnewradionl function. An attacker could exploit this to cause a potential denial of service...

Linux kernel memory leak vulnerability (CNVD-2018-06387)

Linux kernel is the kernel used by Linux, the open source operating system released by the Linux Foundation in the United States. A memory leak vulnerability exists in the 'hwsimnewradionl' function in the drivers/net/wireless/mac80211hwsim.c file in Linux kernel 4.15.9 and earlier. A local...