UBUNTU-CVE-2021-47349

In the Linux kernel, the following vulnerability has been resolved: mwifiex: bring down link before deleting interface We can deadlock when rmmod'ing the driver or going through firmware reset, because the cfg80211unregisterwdev has to bring down the link for us, ... which then grab the same wiph...

CVE-2021-47421

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: handle the case of pcichanneliofrozen only in amdgpupciresume In current code, when a PCI error state pcichannelionormal is detectd, it will report PCIERSRESULTCANRECOVER status to PCI driver, and PCI driver will...

CVE-2021-47421

CVE-2021-47421 affects the Linux kernel amdgpu driver. The root cause is that during PCI error handling, the code may release a write lock in amdgpu_pci_resume even when not safely holding it, leading to potential deadlocks when other threads acquire a read lock. The fix, documented across connec...

CVE-2021-47392 RDMA/cma: Fix listener leak in rdma_cma_listen_on_all() failure

In the Linux kernel, the following vulnerability has been resolved: RDMA/cma: Fix listener leak in rdmacmalistenonall failure If cmalistenonall fails it leaves the per-device ID still on the listenlist but the state is not set to RDMACMADDRBOUND. When the cmid is eventually destroyed...

CVE-2021-47392 RDMA/cma: Fix listener leak in rdma_cma_listen_on_all() failure

In the Linux kernel, the following vulnerability has been resolved: RDMA/cma: Fix listener leak in rdmacmalistenonall failure If cmalistenonall fails it leaves the per-device ID still on the listenlist but the state is not set to RDMACMADDRBOUND. When the cmid is eventually destroyed...

CVE-2021-47382 s390/qeth: fix deadlock during failing recovery

In the Linux kernel, the following vulnerability has been resolved: s390/qeth: fix deadlock during failing recovery Commit 0b9902c1fcc5 "s390/qeth: fix deadlock during recovery" removed taking disciplinemutex inside qethdoreset, fixing potential deadlocks. An error path was missed though, that...

CVE-2021-47382 s390/qeth: fix deadlock during failing recovery

In the Linux kernel, the following vulnerability has been resolved: s390/qeth: fix deadlock during failing recovery Commit 0b9902c1fcc5 "s390/qeth: fix deadlock during recovery" removed taking disciplinemutex inside qethdoreset, fixing potential deadlocks. An error path was missed though, that...

CVE-2021-47382

In the Linux kernel, the following vulnerability has been resolved: s390/qeth: fix deadlock during failing recovery Commit 0b9902c1fcc5 "s390/qeth: fix deadlock during recovery" removed taking disciplinemutex inside qethdoreset, fixing potential deadlocks. An error path was missed though, that...

CVE-2021-47382

The CVE-2021-47382 entry concerns the Linux kernel component s390/qeth. Root cause: a deadlock risk in qeth_do_reset() where discipline_mutex could be held on an error path, preserving the original deadlock potential when a qeth channel path is offline. The vulnerability arises from a race betwee...

CVE-2021-47371

In the Linux kernel, the following vulnerability has been resolved: nexthop: Fix memory leaks in nexthop notification chain listeners syzkaller discovered memory leaks 1 that can be reduced to the following commands: ip nexthop add id 1 blackhole devlink dev reload pci/0000:06:00.0 As part of the...

CVE-2021-47371 nexthop: Fix memory leaks in nexthop notification chain listeners

In the Linux kernel, the following vulnerability has been resolved: nexthop: Fix memory leaks in nexthop notification chain listeners syzkaller discovered memory leaks 1 that can be reduced to the following commands: ip nexthop add id 1 blackhole devlink dev reload pci/0000:06:00.0 As part of the...

CVE-2021-47349 mwifiex: bring down link before deleting interface

In the Linux kernel, the following vulnerability has been resolved: mwifiex: bring down link before deleting interface We can deadlock when rmmod'ing the driver or going through firmware reset, because the cfg80211unregisterwdev has to bring down the link for us, ... which then grab the same wiph...

CVE-2021-47349

In the Linux kernel, the following vulnerability has been resolved: mwifiex: bring down link before deleting interface We can deadlock when rmmod'ing the driver or going through firmware reset, because the cfg80211unregisterwdev has to bring down the link for us, ... which then grab the same wiph...

CVE-2021-47349

The CVE-2021-47349 issue is a kernel-level deadlock in the mwifiex path: when removing the mwifiex interface or during firmware reset, cfg80211_unregister_wdev() may need to bring down the link, which then attempts to acquire the same wiphy lock already held. The provided traces show the lock/inv...

CVE-2021-47271 usb: cdnsp: Fix deadlock issue in cdnsp_thread_irq_handler

In the Linux kernel, the following vulnerability has been resolved: usb: cdnsp: Fix deadlock issue in cdnspthreadirqhandler Patch fixes the following critical issue caused by deadlock which has been detected during testing NCM class: smp: csd: Detected non-responsive CSD lock 1 on CPU0 smp: csd:...

CVE-2021-47271

The CVE-2021-47271 entry concerns a Linux kernel deadlock in usb/cdnsp Thread IRQ handling. The root cause is a mismatch where spin_lock/spin_unlock was used instead of spin_lock_irqsave/spin_lock_irqrestore in cdnsp_thread_irq_handler, leading to potential deadlocks (notably under NCM traffic). ...

CVE-2021-47271 usb: cdnsp: Fix deadlock issue in cdnsp_thread_irq_handler

In the Linux kernel, the following vulnerability has been resolved: usb: cdnsp: Fix deadlock issue in cdnspthreadirqhandler Patch fixes the following critical issue caused by deadlock which has been detected during testing NCM class: smp: csd: Detected non-responsive CSD lock 1 on CPU0 smp: csd:...

CVE-2021-47271

In the Linux kernel, the following vulnerability has been resolved: usb: cdnsp: Fix deadlock issue in cdnspthreadirqhandler Patch fixes the following critical issue caused by deadlock which has been detected during testing NCM class: smp: csd: Detected non-responsive CSD lock 1 on CPU0 smp: csd:...

CVE-2021-47225

In the Linux kernel, the following vulnerability has been resolved: mac80211: fix deadlock in AP/VLAN handling Syzbot reports that when you have APVLAN interfaces that are up and close the AP interface they belong to, we get a deadlock. No surprise - since we devclose them with the wiphy mutex...

CVE-2021-47225

Linux kernel mac80211 deadlock when AP_VLANs are up and the AP interface is closed. Root cause: dev_close() held the wiphy mutex triggers netdev cfg80211 notifier to re-acquire the wiphy mutex. Fixes described: (1) prevent changing iftype while AP_VLANs are up; (2) move the dev_close() loop over ...