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

In the Linux kernel, the following vulnerabilities have been resolved: tee and amdtee: fixed the use-after-free vulnerability in amdteeclosesession. There is a potential race condition in amdteeclosesession that may cause a use-after-free in amdteeopenSession. For example, if a session has a...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerabilities have been resolved: dmaengine: Fixed an issue where the clientcount variable was incremented twice for public channels when dmachanget was called for a channel. This occurred first in balancerefcount, and again before returning. As a result, the...

Astra Linux – Vulnerability in Linux

In the Linux kernel, the following vulnerability has been resolved: misc/uss720: fixed a memory leak in uss720probe. uss720probe forgot to decrease the refcount of usbdev in uss720probe. This issue was fixed by decreasing the refcount of usbdev using usbputdev. BUG: Memory leak Unreferenced objec...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerability has been resolved: usb: gadget: fhid: fix refcount leak on error path When failing to allocate reportdesc, opts-refcnt has already been incremented; therefore, it needs to be decremented to prevent the options structure from being permanently locke...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: SCTP: Added a refcnt field in sctpstreampriorities to avoid a nested loop. With this addition of the refcnt in sctpstreampriorities, we no longer need to traverse all streams to check whether a priority is used by other streams...

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

In the Linux kernel, the following vulnerability has been resolved: comedi: A flaw in the comedibufmunge function was addressed. This function performs a modulo operation async-mungechan %= async-cmd.chanlistlen, without first checking whether chanlistlen is zero. If a user program submits a...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: dmaengine: idxd: Remove the improper idxdfree The call to idxdfree introduces a duplicate putdevice call, leading to a reference count underflow: refcountt: underflow; use-after-free. WARNING: CPU: 15, PID: 4428, at...

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

In the Linux kernel, the following vulnerability has been resolved: ext4: fixed the iloc.bh leak in ext4xattr inodeupdateref. The error branch of ext4xattr inodeupdateref forgot to release the refcount for iloc.bh. This issue was discovered during code review...

Astra Linux – Vulnerability in Linux, Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: netrom: Decreases the sock refcount when the sock timer expires. The commit 63346650c1a9 “netrom: switch to the sock timer API” switched to using the sock timer API. This replaced modtimer with skresettimer, and deltimer with...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: “ice”: fixed the sizing of vsi-txqmap. The approach of having XDP queues per CPU, regardless of the user’s settings, exposed a hidden bug that could occur when the number of Rx queues differs from the number of Tx queues...

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: can: j1939: j1939sessionnew: fix skb reference counting Since j1939sessionskbqueue performs an additional skbget operation for each new skb, doing the same operation for the initial skb in j1939sessionnew will prevent refcount...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: powerpc/smp: Do not decrement the preempt count of the idle task when the CPU is offline. With PREEMPTCOUNT=y, when a CPU is offline and then brought back online, we encounter the following issue: BUG: Scheduling while atomic:...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: usb: ohci-nxp: Fixed the refcount leak in ohcihcdnxpprobe. ofparsephandle returns a node pointer with a refcount incremented; we should use ofnodeput on it when it is no longer needed. Add ofnodeput to avoid the refcount leak...

Astra Linux – Vulnerability in Wayland

An internal reference count is maintained on the buffer pool; this count increments every time a new buffer is created from the pool. The reference count is stored as an integer. On LP64 systems, this can lead to an overflow if the client creates a large number of wlshm buffer objects, or if it...

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

In the Linux kernel, the following vulnerability has been resolved: perf/core: Early exit occurs when perfmmap fails. When perfmmap fails to allocate a buffer, it still invokes the eventmapped callback of the related event. On X86 architecture, this may increase the perfrdpmcallowed reference...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: fsdax: The infinite loop in daxiomaprw has been fixed. I encountered an infinite loop and a warning message when executing the tail command in virtiofs. Warning: CPU: 10; PID: 964; Location: fs/iomap/iter.c:34,...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: serial: pch: Fixed a reference count leak in pchrequestdma. According to the comments on pcigetslot, it returns a pcidevice with its reference count increased. The caller must decrement the reference count by calling pcidevput...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: drm/vmwgfx: Prevent unmapping active read buffers. The kms paths maintain a persistent map that is active for reading and comparing the cursor buffer. These maps can conflict with each other in simple scenarios where: a buffer “a...

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

In the Linux kernel, the following vulnerability has been resolved: usb: dwc3: gadget: Check that the event count does not exceed the event buffer length. The event count is read from the register DWC3GEVNTCOUNT. There is a check for the count being zero, but no check for exceeding the event buff...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: perf/x86/intel/uncore: A reference count leak was fixed in hshewephaslimitsbox. pcigetdevice will increase the reference count of the returned ‘dev’. We need to call pcidevput to decrease the reference count. Since ‘dev’ is only...