UBUNTU-CVE-2022-49148

In the Linux kernel, the following vulnerability has been resolved: watchqueue: Free the page array when watchqueue is dismantled Commit 7ea1a0124b6d "watchqueue: Free the alloc bitmap when the watchqueue is torn down" took care of the bitmap, but not the page array. BUG: memory leak unreferenced...

UBUNTU-CVE-2022-49073

In the Linux kernel, the following vulnerability has been resolved: ata: satadwc460ex: Fix crash due to OOB write the driver uses libata's "tag" values from in various arrays. Since the mentioned patch bumped the ATATAGINTERNAL to 32, the value of the SATADWCQCMDMAX needs to account for that...

UBUNTU-CVE-2022-49179

In the Linux kernel, the following vulnerability has been resolved: block, bfq: don't move oombfqq Our test report a UAF: 2073.019181 ================================================================== 2073.019188 BUG: KASAN: use-after-free in bfqputasyncbfqq+0xa0/0x168 2073.019191 Write of size 8...

DEBIAN-CVE-2021-47646

In the Linux kernel, the following vulnerability has been resolved: Revert "Revert "block, bfq: honor already-setup queue merges"" A crash 1 happened to be triggered in conjunction with commit 2d52c58b9c9b "block, bfq: honor already-setup queue merges". The latter was then reverted by commit...

UBUNTU-CVE-2021-47646

In the Linux kernel, the following vulnerability has been resolved: Revert "Revert "block, bfq: honor already-setup queue merges"" A crash 1 happened to be triggered in conjunction with commit 2d52c58b9c9b "block, bfq: honor already-setup queue merges". The latter was then reverted by commit...

CVE-2022-49720 block: Fix handling of offline queues in blk_mq_alloc_request_hctx()

In the Linux kernel, the following vulnerability has been resolved: block: Fix handling of offline queues in blkmqallocrequesthctx This patch prevents that test nvme/004 triggers the following: UBSAN: array-index-out-of-bounds in block/blk-mq.h:135:9 index 512 is out of range for type 'long...

CVE-2022-49720

In the Linux kernel, the following vulnerability has been resolved: block: Fix handling of offline queues in blkmqallocrequesthctx This patch prevents that test nvme/004 triggers the following: UBSAN: array-index-out-of-bounds in block/blk-mq.h:135:9 index 512 is out of range for type 'long...

CVE-2022-49701 scsi: ibmvfc: Allocate/free queue resource only during probe/remove

In the Linux kernel, the following vulnerability has been resolved: scsi: ibmvfc: Allocate/free queue resource only during probe/remove Currently, the sub-queues and event pool resources are allocated/freed for every CRQ connection event such as reset and LPM. This exposes the driver to a couple...

CVE-2022-49701

In the Linux kernel, the following vulnerability has been resolved: scsi: ibmvfc: Allocate/free queue resource only during probe/remove Currently, the sub-queues and event pool resources are allocated/freed for every CRQ connection event such as reset and LPM. This exposes the driver to a couple...

CVE-2022-49694

In the Linux kernel, the following vulnerability has been resolved: block: disable the elevator int delgendisk The elevator is only used for file system requests, which are stopped in delgendisk. Move disabling the elevator and freeing the scheduler tags to the end of delgendisk instead of doing...

CVE-2022-49672

In the Linux kernel, the following vulnerability has been resolved: net: tun: unlink NAPI from device on destruction Syzbot found a race between tun file and device destruction. NAPIs live in struct tunfile which can get destroyed before the netdev so we have to del them explicitly. The current...

CVE-2022-49649 xen/netback: avoid entering xenvif_rx_next_skb() with an empty rx queue

In the Linux kernel, the following vulnerability has been resolved: xen/netback: avoid entering xenvifrxnextskb with an empty rx queue xenvifrxnextskb is expecting the rx queue not being empty, but in case the loop in xenvifrxaction is doing multiple iterations, the availability of another skb in...

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-2022-49649 xen/netback: avoid entering xenvif_rx_next_skb() with an empty rx queue

In the Linux kernel, the following vulnerability has been resolved: xen/netback: avoid entering xenvifrxnextskb with an empty rx queue xenvifrxnextskb is expecting the rx queue not being empty, but in case the loop in xenvifrxaction is doing multiple iterations, the availability of another skb in...

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-2022-49646 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-2022-49592

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 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...