CVE-2022-49446 nvdimm: Fix firmware activation deadlock scenarios

In the Linux kernel, the following vulnerability has been resolved: nvdimm: Fix firmware activation deadlock scenarios Lockdep reports the following deadlock scenarios for CXL root device power-management, deviceprepare, operations, and deviceshutdown operations for 'ndregion' devices: Chain exis...

CVE-2022-49446 nvdimm: Fix firmware activation deadlock scenarios

In the Linux kernel, the following vulnerability has been resolved: nvdimm: Fix firmware activation deadlock scenarios Lockdep reports the following deadlock scenarios for CXL root device power-management, deviceprepare, operations, and deviceshutdown operations for 'ndregion' devices: Chain exis...

CVE-2022-49446

CVE-2022-49446 affects the Linux kernel’s NVDIMM path, describing deadlock risks in CXL/NVDIMM interactions. The advisory notes possible unsafe locking scenarios involving nd_region keys, nvdimm_bus->reconfig_mutex, system_transition_mutex, and cxl_root/acpi_scan_lock chains, triggered by hold...

CVE-2022-49446

In the Linux kernel, the following vulnerability has been resolved: nvdimm: Fix firmware activation deadlock scenarios Lockdep reports the following deadlock scenarios for CXL root device power-management, deviceprepare, operations, and deviceshutdown operations for 'ndregion' devices: Chain exis...

CVE-2022-49441 tty: fix deadlock caused by calling printk() under tty_port->lock

In the Linux kernel, the following vulnerability has been resolved: tty: fix deadlock caused by calling printk under ttyport-lock ptywrite invokes kmalloc which may invoke a normal printk to print failure message. This can cause a deadlock in the scenario reported by syz-bot below: CPU0 CPU1 CPU2...

CVE-2022-49441 tty: fix deadlock caused by calling printk() under tty_port->lock

In the Linux kernel, the following vulnerability has been resolved: tty: fix deadlock caused by calling printk under ttyport-lock ptywrite invokes kmalloc which may invoke a normal printk to print failure message. This can cause a deadlock in the scenario reported by syz-bot below: CPU0 CPU1 CPU2...

CVE-2022-49441

In the Linux kernel, the following vulnerability has been resolved: tty: fix deadlock caused by calling printk under ttyport-lock ptywrite invokes kmalloc which may invoke a normal printk to print failure message. This can cause a deadlock in the scenario reported by syz-bot below: CPU0 CPU1 CPU2...

CVE-2022-49441

CVE-2022-49441 relates to a Linux kernel deadlock in tty handling. The root cause is a potential deadlock when kmalloc() path could trigger a printk() while holding tty_port->lock, enabling a cycle with console ownership locks. The described failing scenario involves multiple CPUs acquiring po...

CVE-2022-49441 tty: fix deadlock caused by calling printk() under tty_port->lock

In the Linux kernel, the following vulnerability has been resolved: tty: fix deadlock caused by calling printk under ttyport-lock ptywrite invokes kmalloc which may invoke a normal printk to print failure message. This can cause a deadlock in the scenario reported by syz-bot below: CPU0 CPU1 CPU2...

CVE-2022-49434 PCI: Avoid pci_dev_lock() AB/BA deadlock with sriov_numvfs_store()

In the Linux kernel, the following vulnerability has been resolved: PCI: Avoid pcidevlock AB/BA deadlock with sriovnumvfsstore The sysfs sriovnumvfsstore path acquires the device lock before the config space access lock: sriovnumvfsstore devicelock A 1 acquire device lock sriovconfigure...

CVE-2022-49434 PCI: Avoid pci_dev_lock() AB/BA deadlock with sriov_numvfs_store()

In the Linux kernel, the following vulnerability has been resolved: PCI: Avoid pcidevlock AB/BA deadlock with sriovnumvfsstore The sysfs sriovnumvfsstore path acquires the device lock before the config space access lock: sriovnumvfsstore devicelock A 1 acquire device lock sriovconfigure...

CVE-2022-49434

The CVE-2022-49434 issue is in the Linux kernel where pci_dev_lock() historically acquired the config space access lock before the device lock, risking AB/BA deadlocks with sriov_numvfs_store() that already takes the device lock first. The fix is to reverse the order in pci_dev_lock() so it acqui...

CVE-2022-49434

In the Linux kernel, the following vulnerability has been resolved: PCI: Avoid pcidevlock AB/BA deadlock with sriovnumvfsstore The sysfs sriovnumvfsstore path acquires the device lock before the config space access lock: sriovnumvfsstore devicelock A 1 acquire device lock sriovconfigure...

CVE-2022-49406 block: Fix potential deadlock in blk_ia_range_sysfs_show()

In the Linux kernel, the following vulnerability has been resolved: block: Fix potential deadlock in blkiarangesysfsshow When being read, a sysfs attribute is already protected against removal with the kobject node active reference counter. As a result, in blkiarangesysfsshow, there is no need to...

CVE-2022-49406

The CVE-2022-49406 entry is active in Linux kernel and concerns a deadlock in blk_ia_range_sysfs_show() caused by unnecessary use of the queue sysfs lock during reads. The fix, as described in the sources, is to remove the mutex_lock()/mutex_unlock() calls from blk_ia_range_sysfs_show(), since th...

CVE-2022-49406 block: Fix potential deadlock in blk_ia_range_sysfs_show()

In the Linux kernel, the following vulnerability has been resolved: block: Fix potential deadlock in blkiarangesysfsshow When being read, a sysfs attribute is already protected against removal with the kobject node active reference counter. As a result, in blkiarangesysfsshow, there is no need to...

CVE-2022-49406 block: Fix potential deadlock in blk_ia_range_sysfs_show()

In the Linux kernel, the following vulnerability has been resolved: block: Fix potential deadlock in blkiarangesysfsshow When being read, a sysfs attribute is already protected against removal with the kobject node active reference counter. As a result, in blkiarangesysfsshow, there is no need to...

CVE-2022-49406

In the Linux kernel, the following vulnerability has been resolved: block: Fix potential deadlock in blkiarangesysfsshow When being read, a sysfs attribute is already protected against removal with the kobject node active reference counter. As a result, in blkiarangesysfsshow, there is no need to...

CVE-2022-49371 driver core: fix deadlock in __device_attach

In the Linux kernel, the following vulnerability has been resolved: driver core: fix deadlock in deviceattach In deviceattach function, The lock holding logic is as follows: ... deviceattach devicelockdev // get lock dev asyncscheduledevdeviceattachasynchelper, dev; // func asyncschedulenode...

CVE-2022-49371 driver core: fix deadlock in __device_attach

In the Linux kernel, the following vulnerability has been resolved: driver core: fix deadlock in deviceattach In deviceattach function, The lock holding logic is as follows: ... deviceattach devicelockdev // get lock dev asyncscheduledevdeviceattachasynchelper, dev; // func asyncschedulenode...