UBUNTU-CVE-2023-53207

In the Linux kernel, the following vulnerability has been resolved: ublk: fail to recover device if queue setup is interrupted In ublkctrlendrecovery, if waitforcompletioninterruptible is interrupted by signal, queues aren't setup successfully yet, so we have to fail UBLKCMDENDUSERRECOVERY,...

CVE-2023-53251

The CVE-2023-53251 issue affects the Linux kernel (wicwifi/iwlwifi PCIe path) where a NULL pointer dereference could occur in iwl_pcie_irq_rx_msix_handler due to rxq becoming NULL when trans_pcie->rxq is NULL and entry->entry is zero; the patch adds a proper check for trans_pcie->rxq. Re...

CVE-2023-53251 wifi: iwlwifi: pcie: fix NULL pointer dereference in iwl_pcie_irq_rx_msix_handler()

In the Linux kernel, the following vulnerability has been resolved: wifi: iwlwifi: pcie: fix NULL pointer dereference in iwlpcieirqrxmsixhandler rxq can be NULL only when transpcie-rxq is NULL and entry-entry is zero. For the case when entry-entry is not equal to 0, rxq won't be NULL even if...

CVE-2022-50314 nbd: Fix hung when signal interrupts nbd_start_device_ioctl()

In the Linux kernel, the following vulnerability has been resolved: nbd: Fix hung when signal interrupts nbdstartdeviceioctl syzbot reported hung task 1. The following program is a simplified version of the reproducer: int mainvoid int sv2, fd; if socketpairAFUNIX, SOCKSTREAM, 0, sv recvthreads =...

CVE-2022-50314 nbd: Fix hung when signal interrupts nbd_start_device_ioctl()

In the Linux kernel, the following vulnerability has been resolved: nbd: Fix hung when signal interrupts nbdstartdeviceioctl syzbot reported hung task 1. The following program is a simplified version of the reproducer: int mainvoid int sv2, fd; if socketpairAFUNIX, SOCKSTREAM, 0, sv recvthreads =...

CVE-2023-53231 erofs: Fix detection of atomic context

In the Linux kernel, the following vulnerability has been resolved: erofs: Fix detection of atomic context Current check for atomic context is not sufficient as zerofsdecompressqueueendio can be called under rcu lock from blkmqflushpluglist. See the stacktrace 1 In such case we should hand off th...

CVE-2023-53207 ublk: fail to recover device if queue setup is interrupted

In the Linux kernel, the following vulnerability has been resolved: ublk: fail to recover device if queue setup is interrupted In ublkctrlendrecovery, if waitforcompletioninterruptible is interrupted by signal, queues aren't setup successfully yet, so we have to fail UBLKCMDENDUSERRECOVERY,...

CVE-2023-53207

CVE-2023-53207 applies to the Linux kernel ublk subsystem. The issue arises in ublk_ctrl_end_recovery: if wait_for_completion_interruptible() is interrupted by a signal, queues aren’t yet fully set up, so the kernel must fail UBLK_CMD_END_USER_RECOVERY to avoid a kernel oops. The CVSS 3.1 data in...

CVE-2023-53207 ublk: fail to recover device if queue setup is interrupted

In the Linux kernel, the following vulnerability has been resolved: ublk: fail to recover device if queue setup is interrupted In ublkctrlendrecovery, if waitforcompletioninterruptible is interrupted by signal, queues aren't setup successfully yet, so we have to fail UBLKCMDENDUSERRECOVERY,...

CVE-2023-53207 ublk: fail to recover device if queue setup is interrupted

In the Linux kernel, the following vulnerability has been resolved: ublk: fail to recover device if queue setup is interrupted In ublkctrlendrecovery, if waitforcompletioninterruptible is interrupted by signal, queues aren't setup successfully yet, so we have to fail UBLKCMDENDUSERRECOVERY,...

CVE-2022-50284 ipc: fix memory leak in init_mqueue_fs()

In the Linux kernel, the following vulnerability has been resolved: ipc: fix memory leak in initmqueuefs When setupmqsysctls failed in initmqueuefs, mqueueinodecachep is not released. In order to fix this issue, the release path is reordered...

kernel: net/sched: ets: use old 'nbands' while purging unused classes

In the Linux kernel, the following vulnerability has been resolved: net/sched: ets: use old 'nbands' while purging unused classes Shuang reported schets test-case 1 crashing in etsclassqlennotify after recent changes from Lion 2. The problem is: in etsqdiscchange we purge unused DWRR queues; the...

kernel: net/sched: Always pass notifications when child class becomes empty

A use-after-free UAF vulnerability was found in the Linux kernel's net/sched subsystem, specifically in the Credit-Based Shaper CBS qdisc implementation schcbs. The vulnerability occurs because the CBS qdisc's reset function qdiscresetqueue only resets its internal queue but fails to reset its...

Important: Red Hat Security Advisory: kernel security update

An update for kernel is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from th...

kernel: idpf: convert control queue mutex to a spinlock

In the Linux kernel, the following vulnerability has been resolved: idpf: convert control queue mutex to a spinlock With VIRTCHNL2CAPMACFILTER enabled, the following warning is generated on module load: 324.701677 BUG: sleeping function called from invalid context at kernel/locking/mutex.c:578...

kernel: ublk: make sure ubq->canceling is set when queue is frozen

In the Linux kernel, the following vulnerability has been resolved: ublk: make sure ubq-canceling is set when queue is frozen Now ublk driver depends on ubq-canceling for deciding if the request can be dispatched via uringcmd & iouringcmdcompleteintask. Once ubq-canceling is set, the uringcmd can...

kernel: idpf: convert control queue mutex to a spinlock

In the Linux kernel, the following vulnerability has been resolved: idpf: convert control queue mutex to a spinlock With VIRTCHNL2CAPMACFILTER enabled, the following warning is generated on module load: 324.701677 BUG: sleeping function called from invalid context at kernel/locking/mutex.c:578...

kernel: idpf: convert control queue mutex to a spinlock

In the Linux kernel, the following vulnerability has been resolved: idpf: convert control queue mutex to a spinlock With VIRTCHNL2CAPMACFILTER enabled, the following warning is generated on module load: 324.701677 BUG: sleeping function called from invalid context at kernel/locking/mutex.c:578...

kernel: net/sched: Always pass notifications when child class becomes empty

A use-after-free UAF vulnerability was found in the Linux kernel's net/sched subsystem, specifically in the Credit-Based Shaper CBS qdisc implementation schcbs. The vulnerability occurs because the CBS qdisc's reset function qdiscresetqueue only resets its internal queue but fails to reset its...

Important: Red Hat Security Advisory: kernel-rt security update

An update for kernel-rt is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from...