CVE-2021-47272

In the Linux kernel, the following vulnerability has been resolved: usb: dwc3: gadget: Bail from dwc3gadgetexit if dwc-gadget is NULL There exists a possible scenario in which dwc3gadgetinit can fail: during during host - peripheral mode switch in dwc3setmode, and a pending gadget driver fails to...

UBUNTU-CVE-2021-47267

In the Linux kernel, the following vulnerability has been resolved: usb: fix various gadget panics on 10gbps cabling usbassigndescriptors is called with 5 parameters, the last 4 of which are the usbdescriptorheader for: full-speed USB1.1 - 12Mbps including USB1.0 low-speed @ 1.5Mbps, high-speed...

CVE-2021-47256

In the Linux kernel, the following vulnerability has been resolved: mm/memory-failure: make sure wait for page writeback in memoryfailure Our syzkaller trigger the "BUGON!listempty&inode-iwblist" in clearinode: kernel BUG at fs/inode.c:519! Internal error: Oops - BUG: 0 1 SMP Modules linked in:...

CVE-2021-47229

In the Linux kernel, the following vulnerability has been resolved: PCI: aardvark: Fix kernel panic during PIO transfer Trying to start a new PIO transfer by writing value 0 in PIOSTART register when previous transfer has not yet completed which is indicated by value 1 in PIOSTART causes an...

CVE-2021-47261

In the Linux kernel, the following vulnerability has been resolved: IB/mlx5: Fix initializing CQ fragments buffer The function initcqfragbuf can be called to initialize the current CQ fragments buffer cq-buf, or the temporary cq-resizebuf that is filled during CQ resize operation. However, the...

UBUNTU-CVE-2021-47275

In the Linux kernel, the following vulnerability has been resolved: bcache: avoid oversized read request in cache missing code path In the cache missing code path of cached device, if a proper location from the internal B+ tree is matched for a cache miss range, function cacheddevcachemiss will b...

UBUNTU-CVE-2021-47229

In the Linux kernel, the following vulnerability has been resolved: PCI: aardvark: Fix kernel panic during PIO transfer Trying to start a new PIO transfer by writing value 0 in PIOSTART register when previous transfer has not yet completed which is indicated by value 1 in PIOSTART causes an...

CVE-2021-47414 riscv: Flush current cpu icache before other cpus

In the Linux kernel, the following vulnerability has been resolved: riscv: Flush current cpu icache before other cpus On SiFive Unmatched, I recently fell onto the following BUG when booting: 0.000000 ftrace: allocating 36610 entries in 144 pages 0.000000 Oops - illegal instruction 1 0.000000...

CVE-2021-47412

CVE-2021-47412 affects the Linux kernel block layer rq_qos path. The root cause was calling rq_qos_ops->done_bio for bio structures that aren’t tracked, risking a kernel panic. The fix prevents done_bio from running if the bio isn’t tracked (bio_endio paths and queue references are safer). Thi...

CVE-2021-47412 block: don't call rq_qos_ops->done_bio if the bio isn't tracked

In the Linux kernel, the following vulnerability has been resolved: block: don't call rqqosops-donebio if the bio isn't tracked rqqos framework is only applied on request based driver, so: 1 rqqosdonebio needn't to be called for bio based driver 2 rqqosdonebio needn't to be called for bio which...

CVE-2021-47412 block: don't call rq_qos_ops->done_bio if the bio isn't tracked

In the Linux kernel, the following vulnerability has been resolved: block: don't call rqqosops-donebio if the bio isn't tracked rqqos framework is only applied on request based driver, so: 1 rqqosdonebio needn't to be called for bio based driver 2 rqqosdonebio needn't to be called for bio which...

CVE-2021-47412

In the Linux kernel, the following vulnerability has been resolved: block: don't call rqqosops-donebio if the bio isn't tracked rqqos framework is only applied on request based driver, so: 1 rqqosdonebio needn't to be called for bio based driver 2 rqqosdonebio needn't to be called for bio which...

CVE-2021-47399 ixgbe: Fix NULL pointer dereference in ixgbe_xdp_setup

In the Linux kernel, the following vulnerability has been resolved: ixgbe: Fix NULL pointer dereference in ixgbexdpsetup The ixgbe driver currently generates a NULL pointer dereference with some machine online cpus ringfeatureRINGFFDIR.limit = count; It becomes 63. When user use xdp,...

CVE-2021-47399

Technical details about CVE-2021-47399 (ixgbe NULL pointer dereference) are not provided in the supplied documents. Monitor for updates from vendors; no concrete technical details are included here.

CVE-2021-47399 ixgbe: Fix NULL pointer dereference in ixgbe_xdp_setup

In the Linux kernel, the following vulnerability has been resolved: ixgbe: Fix NULL pointer dereference in ixgbexdpsetup The ixgbe driver currently generates a NULL pointer dereference with some machine online cpus ringfeatureRINGFFDIR.limit = count; It becomes 63. When user use xdp,...

CVE-2021-47344

In the Linux kernel, the following vulnerability has been resolved: media: zr364xx: fix memory leak in zr364xxstartreadpipe syzbot reported memory leak in zr364xx driver. The problem was in non-freed urb in case of usbsubmiturb fail. backtrace: kmalloc include/linux/slab.h:561 inline...

CVE-2021-47299 xdp, net: Fix use-after-free in bpf_xdp_link_release

In the Linux kernel, the following vulnerability has been resolved: xdp, net: Fix use-after-free in bpfxdplinkrelease The problem occurs between devgetbyindex and devxdpattachlink. At this point, devxdpuninstall is called. Then xdp link will not be detached automatically when dev is released. But...

CVE-2021-47275 bcache: avoid oversized read request in cache missing code path

In the Linux kernel, the following vulnerability has been resolved: bcache: avoid oversized read request in cache missing code path In the cache missing code path of cached device, if a proper location from the internal B+ tree is matched for a cache miss range, function cacheddevcachemiss will b...

CVE-2021-47272 usb: dwc3: gadget: Bail from dwc3_gadget_exit() if dwc->gadget is NULL

In the Linux kernel, the following vulnerability has been resolved: usb: dwc3: gadget: Bail from dwc3gadgetexit if dwc-gadget is NULL There exists a possible scenario in which dwc3gadgetinit can fail: during during host - peripheral mode switch in dwc3setmode, and a pending gadget driver fails to...

CVE-2021-47266

CVE-2021-47266 affects the Linux kernel’s RDMA/IPOIB path. After a change that sets rtnl_link_ops for ipoib interfaces, moving an IPoIB device to a non-initial netns can cause the device to disappear when the owning netns is deleted, due to default_device_exit() skipping interfaces with rtnl_link...