block: fix overflow in blk_ioctl_discard()

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SUSE CVE-2023-53366

In the Linux kernel, the following vulnerability has been resolved: block: be a bit more careful in checking for NULL bdev while polling Wei reports a crash with an application using polled IO: PGD 14265e067 P4D 14265e067 PUD 47ec50067 PMD 0 Oops: 0000 1 SMP CPU: 0 PID: 21915 Comm: iocore0 Kdump:...

CVE-2023-53366

In the Linux kernel, the following vulnerability has been resolved: block: be a bit more careful in checking for NULL bdev while polling Wei reports a crash with an application using polled IO: PGD 14265e067 P4D 14265e067 PUD 47ec50067 PMD 0 Oops: 0000 1 SMP CPU: 0 PID: 21915 Comm: iocore0 Kdump:...

DEBIAN-CVE-2023-53366

In the Linux kernel, the following vulnerability has been resolved: block: be a bit more careful in checking for NULL bdev while polling Wei reports a crash with an application using polled IO: PGD 14265e067 P4D 14265e067 PUD 47ec50067 PMD 0 Oops: 0000 1 SMP CPU: 0 PID: 21915 Comm: iocore0 Kdump:...

CVE-2023-53366

In the Linux kernel, the following vulnerability has been resolved: block: be a bit more careful in checking for NULL bdev while polling Wei reports a crash with an application using polled IO: PGD 14265e067 P4D 14265e067 PUD 47ec50067 PMD 0 Oops: 0000 1 SMP CPU: 0 PID: 21915 Comm: iocore0 Kdump:...

CVE-2023-53366 block: be a bit more careful in checking for NULL bdev while polling

In the Linux kernel, the following vulnerability has been resolved: block: be a bit more careful in checking for NULL bdev while polling Wei reports a crash with an application using polled IO: PGD 14265e067 P4D 14265e067 PUD 47ec50067 PMD 0 Oops: 0000 1 SMP CPU: 0 PID: 21915 Comm: iocore0 Kdump:...

CVE-2023-53366

CVE-2023-53366 (Linux kernel)修正了在轮询时未正确检查 bio->bi_bdev 是否为 NULL 的漏洞，根本原因是在两任务共用轮询队列时，任务 B 可能在任务 A 仍在轮询时将 IO 重新分配给 bio，导致崩溃（kernel oops）。影响点在块层的 bio_poll/io_do_iopoll/io_uring_enter 路径，已通过内核修复在对 NULL bdev 的检查中加强保护。CVSSv3.1 向量为 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H，基线分数 5.5（中等），局部可利用且无需用户交互，影响的为可用...

CVE-2023-53366 block: be a bit more careful in checking for NULL bdev while polling

In the Linux kernel, the following vulnerability has been resolved: block: be a bit more careful in checking for NULL bdev while polling Wei reports a crash with an application using polled IO: PGD 14265e067 P4D 14265e067 PUD 47ec50067 PMD 0 Oops: 0000 1 SMP CPU: 0 PID: 21915 Comm: iocore0 Kdump:...

CVE-2023-53366 block: be a bit more careful in checking for NULL bdev while polling

In the Linux kernel, the following vulnerability has been resolved: block: be a bit more careful in checking for NULL bdev while polling Wei reports a crash with an application using polled IO: PGD 14265e067 P4D 14265e067 PUD 47ec50067 PMD 0 Oops: 0000 1 SMP CPU: 0 PID: 21915 Comm: iocore0 Kdump:...

CVE-2023-53366

In the Linux kernel, the following vulnerability has been resolved: block: be a bit more careful in checking for NULL bdev while polling Wei reports a crash with an application using polled IO: PGD 14265e067 P4D 14265e067 PUD 47ec50067 PMD 0 Oops: 0000 1 SMP CPU: 0 PID: 21915 Comm: iocore0 Kdump:...

Linux Kernel Security Vulnerabilities

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. A security vulnerability exists in Linux kernel that stems from an unchecked NULL bdev pointer, which could result in a null pointer dereference...

SUSE CVE-2023-53285

In the Linux kernel, the following vulnerability has been resolved: ext4: add bounds checking in getmaxinlinexattrvaluesize Normally the extended attributes in the inode body would have been checked when the inode is first opened, but if someone is writing to the block device while the file syste...

CVE-2023-53307

In the Linux kernel, the following vulnerability has been resolved: rbd: avoid use-after-free in dorbdadd when rbddevcreate fails If getting an ID or setting up a work queue in rbddevcreate fails, use-after-free on rbddev-rbdclient, rbddev-spec and rbddev-opts is triggered in dorbdadd. The root...

DEBIAN-CVE-2023-53307

In the Linux kernel, the following vulnerability has been resolved: rbd: avoid use-after-free in dorbdadd when rbddevcreate fails If getting an ID or setting up a work queue in rbddevcreate fails, use-after-free on rbddev-rbdclient, rbddev-spec and rbddev-opts is triggered in dorbdadd. The root...

CVE-2023-53307

In the Linux kernel, the following vulnerability has been resolved: rbd: avoid use-after-free in dorbdadd when rbddevcreate fails If getting an ID or setting up a work queue in rbddevcreate fails, use-after-free on rbddev-rbdclient, rbddev-spec and rbddev-opts is triggered in dorbdadd. The root...

CVE-2023-53307 rbd: avoid use-after-free in do_rbd_add() when rbd_dev_create() fails

In the Linux kernel, the following vulnerability has been resolved: rbd: avoid use-after-free in dorbdadd when rbddevcreate fails If getting an ID or setting up a work queue in rbddevcreate fails, use-after-free on rbddev-rbdclient, rbddev-spec and rbddev-opts is triggered in dorbdadd. The root...

CVE-2023-53307 rbd: avoid use-after-free in do_rbd_add() when rbd_dev_create() fails

In the Linux kernel, the following vulnerability has been resolved: rbd: avoid use-after-free in dorbdadd when rbddevcreate fails If getting an ID or setting up a work queue in rbddevcreate fails, use-after-free on rbddev-rbdclient, rbddev-spec and rbddev-opts is triggered in dorbdadd. The root...

CVE-2023-53307

In the Linux kernel, the following vulnerability has been resolved: rbd: avoid use-after-free in dorbdadd when rbddevcreate fails If getting an ID or setting up a work queue in rbddevcreate fails, use-after-free on rbddev-rbdclient, rbddev-spec and rbddev-opts is triggered in dorbdadd. The root...

DEBIAN-CVE-2023-53285

In the Linux kernel, the following vulnerability has been resolved: ext4: add bounds checking in getmaxinlinexattrvaluesize Normally the extended attributes in the inode body would have been checked when the inode is first opened, but if someone is writing to the block device while the file syste...

UBUNTU-CVE-2023-53269

In the Linux kernel, the following vulnerability has been resolved: block: ublk: make sure that block size is set correctly block size is one very key setting for block layer, and bad block size could panic kernel easily. Make sure that block size is set correctly. Meantime if ublkvalidateparams...