CVE-2022-49433

In the Linux kernel, the following vulnerability has been resolved: RDMA/hfi1: Prevent use of lock before it is initialized If there is a failure during probe of hfi1 before the sdmamaplock is initialized, the call to hfi1freedevdata will attempt to use a lock that has not been initialized. If th...

DEBIAN-CVE-2022-49398

In the Linux kernel, the following vulnerability has been resolved: usb: dwc3: gadget: Replace listforeachentrysafe if using giveback The listforeachentrysafe macro saves the current item n and the item after n+1, so that n can be safely removed without corrupting the list. However, when traversi...

UBUNTU-CVE-2022-49584

In the Linux kernel, the following vulnerability has been resolved: ixgbe: Add locking to prevent panic when setting sriovnumvfs to zero It is possible to disable VFs while the PF driver is processing requests from the VF driver. This can result in a panic. BUG: unable to handle kernel paging...

UBUNTU-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-2022-49584

CVE-2022-49584 is a Linux kernel issue in the ixgbe driver where disabling SR-IOV (setting sriov_numvfs to zero) can race with the PF driver, potentially causing a kernel panic. The root cause is a lack of locking during the disable path, allowing VF mailbox communication to proceed concurrently....

CVE-2022-49443 list: fix a data-race around ep->rdllist

In the Linux kernel, the following vulnerability has been resolved: list: fix a data-race around ep-rdllist eppoll first calls epeventsavailable with no lock held and checks if ep-rdllist is empty by listemptycareful, which reads rdllist-prev. Thus all accesses to it need some protection to avoid...

CVE-2022-49443

CVE-2022-49443 relates to a data race in Linux kernel epoll during epoll_wait, caused by lockless access to ep->rdllist via ep_events_available and list handling. The issue manifests as a KCSAN-detected race between ep_start_scan/ep_send_events and do_epoll_wait, potentially affecting availabi...

CVE-2022-49443

In the Linux kernel, the following vulnerability has been resolved: list: fix a data-race around ep-rdllist eppoll first calls epeventsavailable with no lock held and checks if ep-rdllist is empty by listemptycareful, which reads rdllist-prev. Thus all accesses to it need some protection to avoid...

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

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-2022-49433 RDMA/hfi1: Prevent use of lock before it is initialized

In the Linux kernel, the following vulnerability has been resolved: RDMA/hfi1: Prevent use of lock before it is initialized If there is a failure during probe of hfi1 before the sdmamaplock is initialized, the call to hfi1freedevdata will attempt to use a lock that has not been initialized. If th...

CVE-2022-49433 RDMA/hfi1: Prevent use of lock before it is initialized

In the Linux kernel, the following vulnerability has been resolved: RDMA/hfi1: Prevent use of lock before it is initialized If there is a failure during probe of hfi1 before the sdmamaplock is initialized, the call to hfi1freedevdata will attempt to use a lock that has not been initialized. If th...

CVE-2022-49433

In the Linux kernel, the following vulnerability has been resolved: RDMA/hfi1: Prevent use of lock before it is initialized If there is a failure during probe of hfi1 before the sdmamaplock is initialized, the call to hfi1freedevdata will attempt to use a lock that has not been initialized. If th...

CVE-2022-49433

The CVE-2022-49433 entry is confirmed with concrete details in connected advisories: in the Linux kernel RDMA/hfi1 driver, a path may call hfi1_free_devdata() with sdma_map_lock uninitialized if probe of hfi1 fails before sdma_map_lock is set up. This could lead to locking operations being perfor...

CVE-2022-49316 NFSv4: Don't hold the layoutget locks across multiple RPC calls

In the Linux kernel, the following vulnerability has been resolved: NFSv4: Don't hold the layoutget locks across multiple RPC calls When doing layoutget as part of the open compound, we have to be careful to release the layout locks before we can call any further RPC calls, such as setattr. The...

CVE-2022-49089

Summary (CVE-2022-49089) The Linux kernel vulnerability stems from a race condition in IB/rdmavt code where a call to rvt_error_qp was not consistently guarded by the required locks (r_lock and s_lock) due to a commit in Fixes. The function’s documentation requires both locks to be held and lockd...

CVE-2022-49079 btrfs: zoned: traverse devices under chunk_mutex in btrfs_can_activate_zone

In the Linux kernel, the following vulnerability has been resolved: btrfs: zoned: traverse devices under chunkmutex in btrfscanactivatezone btrfscanactivatezone can be called with the devicelistmutex already held, which will lead to a deadlock: insertdevextents // Takes devicelistmutex -...

CVE-2021-47632 powerpc/set_memory: Avoid spinlock recursion in change_page_attr()

In the Linux kernel, the following vulnerability has been resolved: powerpc/setmemory: Avoid spinlock recursion in changepageattr Commit 1f9ad21c3b38 "powerpc/mm: Implement setmemory routines" included a spinlock to changepageattr in order to safely perform the three step operations. But then...

CVE-2022-49542: Improper Locking

In the Linux kernel, the following vulnerability has been resolved: scsi: lpfc: Move cfglogverbose check before calling lpfcdmpdbg In an attempt to log message 0126 with LOGTRACEEVENT, the following hard lockup call trace hangs the system. Call Trace: rawspinlockirqsave+0x32/0x40...

CVE-2022-49584: Improper Locking

In the Linux kernel, the following vulnerability has been resolved: ixgbe: Add locking to prevent panic when setting sriovnumvfs to zero It is possible to disable VFs while the PF driver is processing requests from the VF driver. This can result in a panic. BUG: unable to handle kernel paging...