UBUNTU-CVE-2023-54213

In the Linux kernel, the following vulnerability has been resolved: USB: sisusbvga: Add endpoint checks The syzbot fuzzer was able to provoke a WARNING from the sisusbvga driver: ------------ cut here ------------ usb 1-1: BOGUS urb xfer, pipe 3 != type 1 WARNING: CPU: 1 PID: 26 at...

CVE-2023-54174

In the Linux kernel, the following vulnerability has been resolved: vfio: Fix NULL pointer dereference caused by uninitialized group-iommufd group-iommufd is not initialized for the iommufdctxput 20018.331541 BUG: kernel NULL pointer dereference, address: 0000000000000000 20018.377508 RIP:...

UBUNTU-CVE-2023-54319

In the Linux kernel, the following vulnerability has been resolved: pinctrl: at91-pio4: check return value of devmkasprintf devmkasprintf returns a pointer to dynamically allocated memory. Pointer could be NULL in case allocation fails. Check pointer validity. Identified with coccinelle kmerr.coc...

UBUNTU-CVE-2022-50819

In the Linux kernel, the following vulnerability has been resolved: udmabuf: Set ubuf-sg = NULL if the creation of sg table fails When userspace tries to map the dmabuf and if for some reason e.g. OOM the creation of the sg table fails, ubuf-sg needs to be set to NULL. Otherwise, when the userspa...

UBUNTU-CVE-2022-50830

In the Linux kernel, the following vulnerability has been resolved: auxdisplay: hd44780: Fix potential memory leak in hd44780remove hd44780probe allocates a memory chunk for hd with kzalloc and makes "lcd-drvdata-hd44780" point to it. When we call hd44780remove, we should release all relevant...

CVE-2023-54323 cxl/pmem: Fix nvdimm registration races

In the Linux kernel, the following vulnerability has been resolved: cxl/pmem: Fix nvdimm registration races A loop of the form: while true; do modprobe cxlpci; modprobe -r cxlpci; done ...fails with the following crash signature: BUG: kernel NULL pointer dereference, address: 0000000000000040...

CVE-2022-50889 dm integrity: Fix UAF in dm_integrity_dtr()

In the Linux kernel, the following vulnerability has been resolved: dm integrity: Fix UAF in dmintegritydtr Dmintegrity also has the same UAF problem when dmresume and dmdestroy are concurrent. Therefore, cancelling timer again in dmintegritydtr...

CVE-2023-54321

In the Linux kernel, the following vulnerability has been resolved: driver core: fix potential null-ptr-deref in deviceadd I got the following null-ptr-deref report while doing fault injection test: BUG: kernel NULL pointer dereference, address: 0000000000000058 CPU: 2 PID: 278 Comm: 37-i2c-ds248...

CVE-2023-54321

CVE-2023-54321: Linux kernel driver core path (device_add) fix for a null pointer dereference in the error path. If dev->driver is set and bus_remove_device() is invoked before the device is bound, access to dev->p->knode_driver can dereference a NULL pointer. The fix is to clear dev-&gt...

CVE-2023-54319 pinctrl: at91-pio4: check return value of devm_kasprintf()

In the Linux kernel, the following vulnerability has been resolved: pinctrl: at91-pio4: check return value of devmkasprintf devmkasprintf returns a pointer to dynamically allocated memory. Pointer could be NULL in case allocation fails. Check pointer validity. Identified with coccinelle kmerr.coc...

CVE-2022-50884 drm: Prevent drm_copy_field() to attempt copying a NULL pointer

In the Linux kernel, the following vulnerability has been resolved: drm: Prevent drmcopyfield to attempt copying a NULL pointer There are some struct drmdriver fields that are required by drivers since drmcopyfield attempts to copy them to user-space via DRMIOCTLVERSION. But it can be possible th...

CVE-2023-54313 ovl: fix null pointer dereference in ovl_get_acl_rcu()

In the Linux kernel, the following vulnerability has been resolved: ovl: fix null pointer dereference in ovlgetaclrcu Following process: P1 P2 pathopenat linkpathwalk maylookup inodepermissionrcu ovlpermission aclpermissioncheck checkacl getcachedaclrcu ovlgetinodeacl realinode =...

CVE-2023-54283

CVE-2023-54283 is a Linux kernel vulnerability related to a data-race in the BPF LRU list code. Kernel Concurrency Sanitizer detected a race on accessing node->ref in __bpf_lru_list_rotate/__htab_lru_percpu_map_update_elem, leading to a write of 1 byte and a read of 1 byte across CPUs. The fix...

CVE-2022-50882

CVE-2022-50882 affects the Linux kernel's media: uvcvideo component. The root cause was a memory/resource leak where the unit buffer was allocated before validating the privacy GPIO IRQ. The fix postpones allocating the unit buffer until after the IRQ check, preventing leaks. Impact is described ...

CVE-2023-54273 xfrm: Fix leak of dev tracker

In the Linux kernel, the following vulnerability has been resolved: xfrm: Fix leak of dev tracker At the stage of direction checks, the netdev reference tracker is already initialized, but released with wrong put call...

CVE-2023-54264 fs/sysv: Null check to prevent null-ptr-deref bug

In the Linux kernel, the following vulnerability has been resolved: fs/sysv: Null check to prevent null-ptr-deref bug sbgetblkinode-isb, parent return a null ptr and taking lock on that leads to the null-ptr-deref bug...

CVE-2023-54246

CVE-2023-54246 affects the Linux kernel. The issue arises from rcuscale: rcu_scale_writer() scheduling using schedule_timeout_uninterruptible(), which can hang when rcuscale.holdoff exceeds hung_task_timeout_secs. The fix replaces schedule_timeout_uninterruptible() with schedule_timeout_idle(), a...

CVE-2022-50866

CVE-2022-50866 relates to the Linux kernel ASoC: pxa driver, where a null-pointer dereference could occur in the filter() path due to kasprintf() returning NULL when kmalloc() fails. The public fixes require checking the allocation return before using strcmp(), effectively preventing potential cr...

CVE-2022-50858 mmc: alcor: fix return value check of mmc_add_host()

In the Linux kernel, the following vulnerability has been resolved: mmc: alcor: fix return value check of mmcaddhost mmcaddhost may return error, if we ignore its return value, the memory that allocated in mmcallochost will be leaked and it will lead a kernel crash because of deleting not added...

CVE-2023-54242

CVE-2023-54242 affects the Linux kernel in the block bfq I/O elevator. The issue is a division by zero when the weighted sum (wsum) equals zero, causing an invalid calculation of the limit during bfq_limit_depth. The vulnerability could trigger a divide error as observed in a stress-ng stress tes...