kernel: rtmutex: Use waiter::task instead of current in remove_waiter()

A flaw was found in the Linux kernel. When the kernel's real-time mutex rtmutex component performs a specific operation called 'proxy-lock rollback' during futex requeue, it incorrectly handles task pointers. This can lead to a 'Use-After-Free' UAF vulnerability, where the system attempts to use...

kernel: rtmutex: Use waiter::task instead of current in remove_waiter()

A flaw was found in the Linux kernel. When the kernel's real-time mutex rtmutex component performs a specific operation called 'proxy-lock rollback' during futex requeue, it incorrectly handles task pointers. This can lead to a 'Use-After-Free' UAF vulnerability, where the system attempts to use...

What happens to your data when you die? (Lock and Code S07E17)

This week on the Lock and Code podcast … You will die. Your data will not. The afterlife of our information is a recent phenomenon, and some of the companies with the most to sort through are still just figuring it out. As far back as 2007, Facebook was forced to reckon with mass grief when users...

CVE-2026-74617

A flaw was found in the Linux kernel's dibs device driver. The dibs-lock was not properly initialized when a dibs device was allocated, allowing a Global ID GID event interrupt to occur before the lock was ready. This could lead to the system attempting to acquire an uninitialized lock, potential...

CVE-2026-74733

A flaw was found in the Linux kernel's gpio: pca953x driver, which manages General Purpose Input/Output GPIO expanders. The driver uses its own locking mechanism, but the pca953xirqbussyncunlock function failed to acquire the necessary lock when performing register operations. This oversight coul...

CVE-2026-74646

A flaw was found in the Linux kernel's fastrpc subsystem. When an invoke operation is interrupted by a signal, the fastrpcinternalinvoke function moves memory mappings without properly holding the fl-lock. This missing lock during memory map manipulation creates a race condition, which could lead...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: Bluetooth: ISO: Fixed issues related to locking and validity checks for isoconn. sk-skstate indicates whether isopisk-conn is valid. Operations that check or update skstate and access conn should hold locksock; otherwise, they...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: btrfs: fixed a race condition between direct IO writes and fsync operations when using the same file descriptor. If we have two threads that use the same file descriptor, and one of them performs direct IO writes while the other...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: btrfs: fixed the issue of adding a block group to the reclaim list and the unused list during reclaiming operations. There is a potential parallel processing for retry operations in btrfsreclaimbgswork, and this process can al...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: “Revert ‘drm/amd/display: Use HW lock mgr for PSR1’” This revertment is associated with the commit a2b5a9956269 “drm/amd/display: Use HW lock mgr for PSR1”. It may cause system hangs when connecting with the two EDP panels...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Avoid NPD when the ASIC does not support DMUB ctx-dmubsrv will be freed if the ASIC does not support DMUB, which is tested in dmdmubswinit. However, it will be freed in dmubHWLockmgrCmd if shouldusedmubLock retur...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: Binder: Fixed the issue where dereferencing the null-ptr variable occurred unexpectedly. Syzbot reported several issues introduced by commit 44e602b4e52f „binderalloc: added missing mmaplock calls when using VMA”. In these...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: drm/msm/mdp5: Fixed the issue where global state locks were locked backoff. We need to acquire the lock after the early return in the !hwpipe case. Otherwise, we might encounter contention but still return 0. This fix addresses a...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: rcu-tasks: Avoid using prinfo with a spin lock in cblistinitgeneric. prinfo is called with the rtp-cbsgbllock spin lock locked. Since prinfo calls printk, which may sleep, this will result in a bug like the following: 0.206455...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: ALSA: pcm: Fix potential AB/BA lock issue with buffermutex and mmaplock The syzbot tool detected a potential deadlock between the runtime-buffermutex and the mm-mmaplock. This issue arose due to the recent fix related to racy...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: f2fs: Use spinlock to avoid hangs. 14696.634553 Task: cat State: D Stack: 0 PID:1613738 PPID:1613735 Flags:0x00000004 14696.638285 Call Trace: 14696.639038 14696.640032 schedule+0x302/0x930 14696.640969 schedule+0x58/0xd0...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: net: hns3 – added a vlan list lock to protect the vlan list. When adding a port-based VLAN, the vf VLAN needs to be removed from the hardware, and the vlan state in the vf VLAN list must be set to “false”. If the periodic task...

Astra Linux – Vulnerabilities in Linux, Linux-5.10, Linux-5.15, Linux-6.1

In the Linux kernel, the following vulnerability has been resolved: scsi: Reverted “scsi: fcoe: Fix potential deadlock on &fip-ctlrlock”. This reversion involves commit 1a1975551943f681772720f639ff42fbaa746212. This commit causes interrupts to be lost for FCoE devices, as it changed the sping loc...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: scsi: lpfc: Fixed a hard lockup issue when reading the rxmonitor from debugfs. During I/O operations and simultaneous reads of /sys/kernel/debug/lpfc/fnX/rxmonitor, a hard lockup similar to the call trace below may occur. The...

Astra Linux – Vulnerabilities in Linux, Linux-5.15, Linux-5.10

In the Linux kernel, the following vulnerabilities have been resolved: Bluetooth: L2CAP: fixed the “bad unlock balance” issue in l2capdisconnectrsp. The conn-chanlock is not acquired before l2capgetchanbyscid. If l2capgetchanbyscid returns NULL, then the “bad unlock balance” issue will be trigger...