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

In the Linux kernel, the following vulnerability has been resolved: arm64: asm-bug: Add .align 2 to the end of BUGENTRY. When CONFIGDEBUGBUGVERBOSE=n, we fail to add the necessary padding bytes to the bugtable entries. As a result, the last entry in a bug table will be ignored, potentially leadin...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Disassociate vcpus from the redistributor region during teardown When tearing down a redistributor region, make sure that there are no dangling pointers to that region stored in the vcpus...

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

In the Linux kernel, the following vulnerabilities have been resolved: Firmware: armscpi: Check the DVFS OPP count returned by the firmware. A kernel crash occurs with the following call trace when the SCPI firmware returns an OPP count of zero. on some platforms, dvfsinfo.oppcount may be zero...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Do not retire an aborted MMIO instruction Returning an abort to the guest for an unsupported MMIO access is a documented feature of the KVM UAPI. However, it’s clear that this functionality has been tested limitedly, ...

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: iommu/arm-smmu: The probe of the client device is deferred after the SMMU device is bound. A null pointer dereference occurs due to a race between the SMMU driver’s probe and the client driver’s probe. This occurs when the...

Astra Linux – Vulnerability found in Linux 6.1, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: Firmware: armscmi: Balances the device reference count when destroying devices. Using devicefindchild to find the appropriate SCMI device to destroy causes an imbalance in the device reference count. This occurs because...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerability has been resolved: Firmware: armscpi: Ensure that scpiinfo is not assigned if the probe fails. When the scpi probe fails at any point, we need to ensure that scpiinfo is not set and will remain NULL until the probe succeeds. If this issue is not...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerabilities have been resolved: ARM: OMAP2+: display: Fixed refcount leak bug In omapdssinitfbdev, offindnodebyname will return a node pointer with the refcount incremented. We should use ofnodeput when it is no longer needed...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerabilities have been resolved: ARM: bcm: Fixed a refcount leak in bcmkonasmcinit. The offindmatchingnode function returns a node pointer with a refcount incremented. We should use ofnodeput on it when there is no longer a need for it. Added ofnodeput to avo...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: Firmware: armffa: Fixed FFA device names for logical partitions. Each physical partition can provide multiple services, each with a unique UUID. Each such service can be represented as a logical partition with a unique combinatio...

Astra Linux – Vulnerability in 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 in Xen

A issue was discovered in Xen versions 4.9 through 4.14.x. On the ARM architecture, a guest can control whether memory accesses bypass the cache. This means that Xen needs to ensure that all writes such as those during scrubbing have reached the memory before handing over the page to the guest...

Astra Linux – Vulnerability in Linux

In the Linux kernel, the following vulnerabilities have been resolved: ARM: footbridge: fixed PCI interrupt mapping Since commit 30fdfb929e82 "PCI: added a call to pciassignirq in pcideviceprobe", the PCI code will call the IRQ mapping function whenever a PCI driver is probed. If these functions...

Astra Linux – Vulnerability in Linux, Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: tty: ttybuffer: Fixed the soft lockup issue in flushtoldisc. When running the ltp testcase ltp/testcases/kernel/pty/pty04.c with arm64, there is a soft lockup. The detailed call trace is as follows: Workqueue: eventsunbound →...

Astra Linux – Vulnerability in Linux

In the Linux kernel, the following vulnerability has been resolved: iommu/arm-smmu: Fixed the refcount leak in armsmmudevice when armsmmurpmget fails. The armsmmurpmget function invokes pmruntimegetsync, which increases the refcount of “smmu”. This occurs even though the return value is less than...

Astra Linux – Vulnerability in Linux 5.10, Linux

Guests running on Arm can cause Denial of Service DoS attacks on Dom0 through PV devices. When mapping memory pages of guests on Arm, Dom0 uses an rbtree to keep track of the foreign mappings. The update of this rbtree does not always occur completely with the relevant lock held, resulting in a...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: iommu/arm-smmu-v3: checking the return value after calling platformgetresource. This will cause a null-ptr-deref if platformgetresource returns NULL; therefore, we need to check the return value...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: iommu/arm-smmu: fixed a possible null-ptr-deref in armsmmudeviceprobe. This issue could lead to a null-ptr-deref when using ‘res’, if platformgetresource returns NULL. Therefore, move operations using ‘res’ should be performed...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerability has been resolved: ARM: versatile: Added ofnodeput in dcscbinit. The devicenode pointer is returned by offindcompatiblenode, with the reference count incremented. We should use ofnodeput to avoid the reference count leak...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerabilities have been resolved: ARM: meson: Fixed a refcount leak in mesonsmppreparecpus. offindcompatiblenode returns a node pointer with a refcount incremented. We should use ofnodeput on it after processing. Added ofnodeput to prevent the refcount leak fr...