Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: cachefiles: Added missing lock protection when polling. Added missing lock protection in the poll routine when iterating the xarray. Otherwise, even with the RCU read lock held, only the slot of the radix tree is guaranteed to be...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: ptdma: In ptcoreexecutecmd, it is necessary to use a spinlock. The interrupt handler ptcoreirqhandler of the ptdma driver can be called from the interrupt context. The code flow within this function may lead to ptcoreexecutecmd,...

Astra Linux – Vulnerability in Linux, Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: usb: ffs: Fix use-after-free for epfile Consider a case where ffsfuncepsdisable is called from ffsfuncdisable as part of the composition switch. At the same time, ffsepfilerelease is called from the user space. ffsepfilerelease...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: phy: lynx-28g: Serialize concurrent physetmodeext calls to shared registers The protocol converter configuration registers PCC8, PCCC, and PCCD implemented by the driver control protocol converters across multiple lanes. Each lan...

Astra Linux – Vulnerability found in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: arm64: efi: Make efirtlock a rawspinlock Running a rt-kernel base on 6.2.0-rc3-rt1 on an Ampere Altra outputs the following: BUG: A sleeping function is called from an invalid context at kernel/locking/spinlockrt.c:46 inatomic: 1...

Astra Linux – Vulnerability found in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: usb: gadget: uSerial: Added a null pointer check in gserialresume. Consider a scenario where gserialdisconnect has already cleared gser-ioport. If a wakeup interrupt is triggered later, gserialresume will be called, which will...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: net: ks8851: Handle softirqs at the end of the IRQ thread to fix a hang issue. The ks8851irq thread may call ks8851rxpkts if there are any packets in the MAC FIFO, which in turn calls netifrx. This implementation of netifrx is...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: gpio: mpsse: ensure worker is torn down. When an IRQ worker is running, unplugging the device can cause a crash. The hardware at the sealevel level for which this driver was written was not hotpluggable; therefore, I wasn’t aware...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: spi: tegra210-quad: The NULL check for currxfer was protected in the IRQ handler. Now, all other accesses to currxfer are performed under a lock. The NULL check for currxfer in tegraqspiisrthread is also protected by a spinlock...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: fortify the spinlock against deadlock by interrupt In the function ieee80211txdequeue, there is a specific locking sequence: begin: spinlock&local-queuestopreasonlock; qstopped = local-queuestopreasonsq;...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: idpf: fixed the PREEMPTRT raw/bh spinlock nesting issue for async VC handling The code has been changed to use a local lock instead of the raw spinlock provided by the completion structure in the idpfvcxn struct. This conversion ...

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: serial: mxs-auart: add a spinlock around changing the CTS state The uarthandlectschange function in serialcore expects the caller to hold port-lock. For example, I observed the following kernel error during the loading of the...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: dmaengine: idxd: Converted spinlock to mutex to lock the evlworkqueue. drainworkqueue cannot be called safely in a spinlocked context due to possible task rescheduling. In the multi-task scenario, calling queuework while...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: drm/i915: Fixed the reference counting during error capture and debugfs dump. When GuC support was added to error capture, the reference counting around the request object was broken. This issue has been fixed. The context-bas...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: netpoll: Fixed a deadlock in memory allocation under spinlock. A deadlock occurred in the refillskbs function, where memory allocation while holding skbpool-lock could trigger a recursive lock acquisition attempt. This deadlock...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: raw: Fixed NULL dereference in rawgetnext. Dae R. Jeong reported a NULL dereference in rawgetnext. It seems that the reproduction test was running these sequences in parallel, so one thread was iterating over a socket that was...

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

In the Linux kernel, the following vulnerabilities have been resolved: rcu: Dump vmalloc memory info safely Currently, for double invoke callrcu, the memory information of rcuhead objects will be dumped. If these objects are not allocated using the slab allocator, vmallocdumpobj will be invoked,...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: ext4: Fix for accessing an uninitialized lock in the fc replay path. The following kernel trace can be triggered with fstest generic/629 when executed against a filesystem with the fast-commit feature enabled: INFO: Trying to...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: ping: Fixed a potential NULL dereference for /proc/net/icmp. After committing the change dbca1596bbb0 “ping: Converted to RCU lookups, removed rwlock”, we use RCU for ping sockets. However, we should still use a spinlock for...

Astra Linux – Vulnerability found in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: nilfs2: A potential UAF Use-After-Free error in struct nilfsscinfo can be prevented in nilfssegctorthread. The finalization of nilfssegctorthread may race with nilfssegctorkillthread, which terminates that thread. This could...