CVE-2022-49649

CVE-2022-49649 affects the Linux kernel under xen_netback, where xenvif_rx_next_skb() can be called with an empty RX queue during repeated iterations in xenvif_rx_action(), risking a kernel NULL pointer dereference. The provided crash trace centers on xenvif_rx_skb() and the related netback loop....

CVE-2022-49646 wifi: mac80211: fix queue selection for mesh/OCB interfaces

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: fix queue selection for mesh/OCB interfaces When using iTXQ, the code assumes that there is only one vif queue for broadcast packets, using the BE queue. Allowing non-BE queue marking violates that assumption and...

CVE-2022-49646

CVE-2022-49646 affects the Linux kernel’s wifi/mac80211 code. When using iTXQ, the queue-selection logic assumed a single broadcast vif queue (BE). Allowing non-BE queue markings breaks that assumption and can break txq->ac == skb_queue_mapping, impacting queue handling in the driver and poten...

CVE-2022-49646 wifi: mac80211: fix queue selection for mesh/OCB interfaces

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: fix queue selection for mesh/OCB interfaces When using iTXQ, the code assumes that there is only one vif queue for broadcast packets, using the BE queue. Allowing non-BE queue marking violates that assumption and...

CVE-2022-49646

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: fix queue selection for mesh/OCB interfaces When using iTXQ, the code assumes that there is only one vif queue for broadcast packets, using the BE queue. Allowing non-BE queue marking violates that assumption and...

CVE-2022-49592 net: stmmac: fix dma queue left shift overflow issue

In the Linux kernel, the following vulnerability has been resolved: net: stmmac: fix dma queue left shift overflow issue When queue number is 4, left shift overflows due to 32 bits integer variable. Mask calculation is wrong for MTLRXQDMAMAP1. If CONFIGUBSAN is enabled, kernel dumps below warning...

CVE-2022-49592 net: stmmac: fix dma queue left shift overflow issue

In the Linux kernel, the following vulnerability has been resolved: net: stmmac: fix dma queue left shift overflow issue When queue number is 4, left shift overflows due to 32 bits integer variable. Mask calculation is wrong for MTLRXQDMAMAP1. If CONFIGUBSAN is enabled, kernel dumps below warning...

CVE-2022-49592

CVE-2022-49592 affects the Linux kernel driver net/stmmac: a left-shift overflow in MTL_RXQ_DMA_MAP1 occurs when the number of TX/RX queues exceeds four, due to a 32‑bit mask calculation. UBSAN reports show a shift-out-of-bounds during UBSAN checks, leading to a potential warning path in dwmac4_c...

CVE-2022-49592

In the Linux kernel, the following vulnerability has been resolved: net: stmmac: fix dma queue left shift overflow issue When queue number is 4, left shift overflows due to 32 bits integer variable. Mask calculation is wrong for MTLRXQDMAMAP1. If CONFIGUBSAN is enabled, kernel dumps below warning...

CVE-2022-49492 nvme-pci: fix a NULL pointer dereference in nvme_alloc_admin_tags

In the Linux kernel, the following vulnerability has been resolved: nvme-pci: fix a NULL pointer dereference in nvmeallocadmintags In nvmeallocadmintags, the adminq can be set to an error typically -ENOMEM if the blkmqinitqueue call fails to set up the queue, which is checked immediately after th...

CVE-2022-49492

In the Linux kernel, the following vulnerability has been resolved: nvme-pci: fix a NULL pointer dereference in nvmeallocadmintags In nvmeallocadmintags, the adminq can be set to an error typically -ENOMEM if the blkmqinitqueue call fails to set up the queue, which is checked immediately after th...

CVE-2022-49412 bfq: Avoid merging queues with different parents

In the Linux kernel, the following vulnerability has been resolved: bfq: Avoid merging queues with different parents It can happen that the parent of a bfqq changes between the moment we decide two queues are worth to merge and set bic-stablemergebfqq and the moment bfqsetupmerge is called. This...

CVE-2022-49412

CVE-2022-49412 describes a Linux kernel vulnerability in bfq where merging two bfqq queues could occur with different parent cgroups, potentially leading to a use-after-free if the parent changes between decision to merge and bfq_setup_merge() call. The root cause is reparenting of bfqqs (e.g., d...

CVE-2022-49412 bfq: Avoid merging queues with different parents

In the Linux kernel, the following vulnerability has been resolved: bfq: Avoid merging queues with different parents It can happen that the parent of a bfqq changes between the moment we decide two queues are worth to merge and set bic-stablemergebfqq and the moment bfqsetupmerge is called. This...

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-2022-49394 blk-iolatency: Fix inflight count imbalances and IO hangs on offline

In the Linux kernel, the following vulnerability has been resolved: blk-iolatency: Fix inflight count imbalances and IO hangs on offline iolatency needs to track the number of inflight IOs per cgroup. As this tracking can be expensive, it is disabled when no cgroup has iolatency configured for th...

CVE-2022-49394

The CVE-2022-49394 entry describes a Linux kernel vulnerability in blk-iolatency where inflight IO counters could become imbalanced and IOs hang when a cgroup with iolatency is offline or disabled. The root cause is that enabled counters could be manipulated in iolatency_set_limit() and iolatency...

CVE-2022-49377

CVE-2022-49377 is a Linux kernel vulnerability in the block multi-queue (blk-mq) path. The root cause was a use-after-free involving ->tagset during blk_mq_run_hw_queues, when there were no queued requests and the tagset could be freed after blk_cleanup_queue. The fix disables touching tagset ...