Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: writeback: Fixed the use of “free” after deallocating memory in inodeswitchwbsworkfn. The function inodeswitchwbsworkfn has a loop like this: c wbgetnewwb; while 1 list = llistdelall&newwb-switchwbsctxs; / Nothing to do? / if !li...

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 revertment is associated with the commit 1a1975551943f681772720f639ff42fbaa746212. This commit causes interrupts to be lost for FCoE devices, as it change...

Astra Linux – Vulnerability in Git

Git is a revision control system. Before versions 2.30.9, 2.31.8, 2.32.7, 2.33.8, 2.34.8, 2.35.8, 2.36.6, 2.37.7, 2.38.5, 2.39.3, and 2.40.1, feeding specially crafted input to git apply --reject could cause a path outside the working tree to be overwritten with partially controlled contents...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: vhosttask: Handles SIGKILL by flushing the work and exiting. Instead of lingering until the device is closed, this resolves the issue by handling SIGKILL as follows: 1. Marking the worker as killed, so we no longer attempt to use...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: rcu-tasks: Fixed a race condition in the schedule function and the flush work operation. When booting secondary CPUs, cpusreadlock/unlock does not keep the online cpumask stable. This temporary change in the online mask result...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: fbdev: Fixed invalid page access after closing deferred I/O devices. When a fbdev with deferred I/O is opened and closed, the dirty pages still remain in the pageref list. Eventually, those pages may be processed during the delay...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: tipc: Fixed a use-after-free issue in tipcnamedreinit. syzbot identified the following issue: BUG: KASAN: Use-after-free in tipcnamedreinit+0x94f/0x9b0 net/tipc/namedistr.c:413 A 8-byte read at address ffff88805299a000 was...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: ublk: Fix for use-after-free in ublkpartitionscanwork There exists a race condition between the async partition scan work and the device teardown, which can lead to a use-after-free of ub-ubdisk. 1. blkctrlstartdev schedules...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: It is now possible to use hdev-workqueue when scheduling hdev-cmd,ncmdtimer. The syzbot is reporting an attempt to schedule the hdev-cmdwork task from systemwq to hdev-workqueue WQ, which is currently in a draining...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: io-wq: Check for wq exit after adding a new worker taskwork. We check the IOWQBITEXIT flag before attempting to create a new worker. The wq exit cancels any pending tasks if there are any. However, it’s possible for a race...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, Linux, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: mlxsw: spectrumacltcam: A memory leak has been fixed when canceling the rehash operation. The rehash operation is rescheduled with a delay if the number of credits at the end of the operation is not negative—this indicates that t...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: Input: gpio-keys – cancels delayed work only in case of GPIO. The gpiokeys module can accept gpios or interrupts. The module initializes delayed work only in case of gpios and is only used if the debounce timer is not used...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: net: micrel: Fixed the issue of receiving the timestamp in the frame for lan8841. The problematic code used the ptp workqueue to obtain the second part of the timestamp. When the port was disabled, this workqueue was stopped...

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

In the Linux kernel, the following vulnerability has been resolved: net: fixed possible store tearing in neighperiodicwork. While reviewing a related syzbot report involving neighperiodicwork, I noticed that I forgot to add an annotation when deleting an RCU-protected item from a list. When using...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: RDMA/rxe: Fixed an issue where incomplete state saving occurred in rxerequester. If a send packet is dropped by the IP layer in rxerequester, the call to rxexmitpacket may fail with an error code of -EAGAIN. To recover from this...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerability has been resolved: media: s5p-mfc: Clearing workbit to handle error conditions During an error with the CLOSEINSTANCE command, ctxworkbits wasn’t cleared. Subsequent execution of mfc led to a NULL pointer dereferencing of this context, resulting in...

Astra Linux – Vulnerability found in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: net/smc: fixed a deadlock that was triggered by canceldelayedworksyn The following LOCKDEP was detected: Workqueue: events smclgrfreework smc WARNING: possible circular locking dependency detected...

Astra Linux – Vulnerability found in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: scsi: lpfc: Fixed a null pointer dereferencing after failing to issue FLOGI and PLOGI commands. If lpfcissueelsflogi fails and returns a non-zero status, the node’s reference count is decremented to trigger the release of the...

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

In the Linux kernel, the following vulnerability has been resolved: ravb: Fixed the use-after-free issue in ravbtxtimeoutwork. The ravbstop function should call cancelworksync. Otherwise, ravbtxtimeoutwork may use the freed private data after ravbremove is called, as follows: CPU0 CPU1...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: perf/core: Fixed an invalid wait context in ctxschedin Lockdep identified a bug in event scheduling when a pinned event failed, causing threads in the ring buffer to be awakened as follows. It seems that the wait-queue lock shoul...