CVE-2021-46945 ext4: always panic when errors=panic is specified

In the Linux kernel, the following vulnerability has been resolved: ext4: always panic when errors=panic is specified Before commit 014c9caa29d3 "ext4: make ext4abort use ext4error", the following series of commands would trigger a panic: 1. mount /dev/sda -o ro,errors=panic test 2. mount /dev/sd...

CVE-2021-46942 io_uring: fix shared sqpoll cancellation hangs

In the Linux kernel, the following vulnerability has been resolved: iouring: fix shared sqpoll cancellation hangs 736.982891 INFO: task iou-sqp-4294:4295 blocked for more than 122 seconds. 736.982897 Call Trace: 736.982901 schedule+0x68/0xe0 736.982903 iouringcancelsqpoll+0xdb/0x110 736.982908...

CVE-2021-46943 media: staging/intel-ipu3: Fix set_fmt error handling

In the Linux kernel, the following vulnerability has been resolved: media: staging/intel-ipu3: Fix setfmt error handling If there in an error during a setfmt, do not overwrite the previous sizes with the invalid config. Without this patch, v4l2-compliance ends up allocating 4GiB of RAM and causin...

CVE-2021-46941 usb: dwc3: core: Do core softreset when switch mode

In the Linux kernel, the following vulnerability has been resolved: usb: dwc3: core: Do core softreset when switch mode According to the programming guide, to switch mode for DRD controller, the driver needs to do the following. To switch from device to host: 1. Reset controller with...

CVE-2021-46938 dm rq: fix double free of blk_mq_tag_set in dev remove after table load fails

In the Linux kernel, the following vulnerability has been resolved: dm rq: fix double free of blkmqtagset in dev remove after table load fails When loading a device-mapper table for a request-based mapped device, and the allocation/initialization of the blkmqtagset for the device fails, a followi...

CVE-2020-36776 thermal/drivers/cpufreq_cooling: Fix slab OOB issue

In the Linux kernel, the following vulnerability has been resolved: thermal/drivers/cpufreqcooling: Fix slab OOB issue Slab OOB issue is scanned by KASAN in cpupowertofreq. If power is limited below the power of OPP0 in EM table, it will cause slab out-of-bound issue with negative array index...

CVE-2020-36776 thermal/drivers/cpufreq_cooling: Fix slab OOB issue

In the Linux kernel, the following vulnerability has been resolved: thermal/drivers/cpufreqcooling: Fix slab OOB issue Slab OOB issue is scanned by KASAN in cpupowertofreq. If power is limited below the power of OPP0 in EM table, it will cause slab out-of-bound issue with negative array index...

CVE-2021-46925

A flaw was found in the Linux kernel affecting the net/smc Synchronous Message Channel subsystem. This vulnerability is caused by a race condition between the smccdctxhandler and smcrelease functions and can cause kernel panics. Mitigation There are no known mitigations to the problem and Red Hat...

CVE-2021-46931

In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: Wrap the tx reporter dump callback to extract the sq Function mlx5etxreporterdumpsq casts its void argument to struct mlx5etxqsq , but in TX-timeout-recovery flow the argument is actually of type struct mlx5etxtimeoutc...

CVE-2021-46933

In the Linux kernel, the following vulnerability has been resolved: usb: gadget: ffs: Clear ffseventfd in ffsdataclear. ffsdataclear is indirectly called from both ffsfskillsb and ffsep0release, so it ends up being called twice when userland closes ep0 and then unmounts ffs. If userland provided ...

Spoofing

In the Linux kernel, the following vulnerability has been resolved: fs/mountsetattr: always cleanup mountkattr Make sure that finishmountkattr is called after mountkattr was succesfully built in both the success and failure case to prevent leaking any references we took when we built it. We...

CVE-2021-46931

In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: Wrap the tx reporter dump callback to extract the sq Function mlx5etxreporterdumpsq casts its void argument to struct mlx5etxqsq , but in TX-timeout-recovery flow the argument is actually of type struct mlx5etxtimeoutc...

CVE-2021-46930

In the Linux kernel, the following vulnerability has been resolved: usb: mtu3: fix listhead check warning This is caused by uninitialization of listhead. BUG: KASAN: use-after-free in listdelentryvalid+0x34/0xe4 Call trace: dumpbacktrace+0x0/0x298 showstack+0x24/0x34 dumpstack+0x130/0x1a8...

CVE-2021-46937

In the Linux kernel, the following vulnerability has been resolved: mm/damon/dbgfs: fix 'struct pid' leaks in 'dbgfstargetidswrite' DAMON debugfs interface increases the reference counts of 'struct pid's for targets from the 'targetids' file write callback 'dbgfstargetidswrite', but decreases the...

Spoofing

In the Linux kernel, the following vulnerability has been resolved: mm/damon/dbgfs: fix 'struct pid' leaks in 'dbgfstargetidswrite' DAMON debugfs interface increases the reference counts of 'struct pid's for targets from the 'targetids' file write callback 'dbgfstargetidswrite', but decreases the...

CVE-2021-46935

In the Linux kernel, the following vulnerability has been resolved: binder: fix asyncfreespace accounting for empty parcels In 4.13, commit 74310e06be4d "android: binder: Move buffer out of area shared with user space" fixed a kernel structure visibility issue. As part of that patch, sizeofvoid w...

CVE-2021-46932 Input: appletouch - initialize work before device registration

In the Linux kernel, the following vulnerability has been resolved: Input: appletouch - initialize work before device registration Syzbot has reported warning in flushwork. This warning is caused by work-func == NULL, which means missing work initialization. This may happen, since inputdev-close...

CVE-2021-46927 nitro_enclaves: Use get_user_pages_unlocked() call to handle mmap assert

In the Linux kernel, the following vulnerability has been resolved: nitroenclaves: Use getuserpagesunlocked call to handle mmap assert After commit 5b78ed24e8ec "mm/pagemap: add mmapassertlocked annotations to findvma", the call to getuserpages will trigger the mmap assert. static inline void...

CVE-2021-46925 net/smc: fix kernel panic caused by race of smc_sock

In the Linux kernel, the following vulnerability has been resolved: net/smc: fix kernel panic caused by race of smcsock A crash occurs when smccdctxhandler tries to access smcsock but smcrelease has already freed it. 4570.695099 BUG: unable to handle page fault for address: 000000002eae9e88...

CVE-2021-46923 fs/mount_setattr: always cleanup mount_kattr

In the Linux kernel, the following vulnerability has been resolved: fs/mountsetattr: always cleanup mountkattr Make sure that finishmountkattr is called after mountkattr was succesfully built in both the success and failure case to prevent leaking any references we took when we built it. We...