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

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:...

UBUNTU-CVE-2025-38255

In the Linux kernel, the following vulnerability has been resolved: lib/groupcpus: fix NULL pointer dereference from groupcpusevenly While testing nullblk with configfs, echo 0 pollqueues will trigger following panic: BUG: kernel NULL pointer dereference, address: 0000000000000010 Oops: Oops: 000...

SUSE CVE-2022-50089

In the Linux kernel, the following vulnerability has been resolved: btrfs: ensure pages are unlocked on cowfilerange failure There is a hungtask report on zoned btrfs like below. https://github.com/naota/linux/issues/59 726.328648 INFO: task rocksdb:high0:11085 blocked for more than 241 seconds...

OESA-2025-1515 kernel security update

The Linux Kernel, the operating system core itself. Security Fixes: In the Linux kernel, the following vulnerability has been resolved: blk-mq: Fix kmemleak in blkmqinitallocatedqueue There is a kmemleak caused by modprobe nullblk.ko unreferenced object 0xffff8881acb1f000 size 1024: comm...

CVE-2022-49901 blk-mq: Fix kmemleak in blk_mq_init_allocated_queue

In the Linux kernel, the following vulnerability has been resolved: blk-mq: Fix kmemleak in blkmqinitallocatedqueue There is a kmemleak caused by modprobe nullblk.ko unreferenced object 0xffff8881acb1f000 size 1024: comm "modprobe", pid 836, jiffies 4294971190 age 27.068s hex dump first 32 bytes:...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: nullblk: Fixed a issue where a NULL pointer dereference occurred when configuring ‘power’ and ‘submitqueues’. Writing ‘power’ and ‘submitqueues’ concurrently would trigger a kernel panic. Test script: bash modprobe nullblk...

UBUNTU-CVE-2024-53167

In the Linux kernel, the following vulnerability has been resolved: nfs/blocklayout: Don't attempt unregister for invalid block device Since commit d869da91cccb "nfs/blocklayout: Fix premature PR key unregistration" an unmount of a pNFS SCSI layout-enabled NFS may dereference a NULL blockdevice i...

Ubuntu 22.04 LTS : Linux kernel (Azure) vulnerabilities (USN-7123-1)

"The remote Ubuntu 22.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-7123-1 advisory. It was discovered that the CIFS network file system implementation in the Linux kernel did not properly validate certain SMB messages, leading to an...

USN-7089-7 linux-lowlatency, linux-lowlatency-hwe-6.8 vulnerabilities

Chenyuan Yang discovered that the USB Gadget subsystem in the Linux kernel did not properly check for the device to be enabled before writing. A local attacker could possibly use this to cause a denial of service. CVE-2024-25741 Several security issues were discovered in the Linux kernel. An...

Ubuntu 24.04 LTS : Linux kernel vulnerabilities (USN-6999-2)

The remote Ubuntu 24.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-6999-2 advisory. Chenyuan Yang discovered that the CEC driver driver in the Linux kernel contained a use-after-free vulnerability. A local attacker could use this to caus...

Ubuntu 22.04 LTS : Linux kernel vulnerabilities (USN-7029-1)

"The remote Ubuntu 22.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-7029-1 advisory. Chenyuan Yang discovered that the CEC driver driver in the Linux kernel contained a use-after-free vulnerability. A local attacker could use this to cau...

Ubuntu 22.04 LTS : Linux kernel vulnerabilities (USN-7008-1)

"The remote Ubuntu 22.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-7008-1 advisory. Chenyuan Yang discovered that the CEC driver driver in the Linux kernel contained a use-after-free vulnerability. A local attacker could use this to cau...

Ubuntu 22.04 LTS : Linux kernel vulnerabilities (USN-7005-2)

The remote Ubuntu 22.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-7005-2 advisory. Chenyuan Yang discovered that the CEC driver driver in the Linux kernel contained a use-after-free vulnerability. A local attacker could use this to caus...

Ubuntu 24.04 LTS : Linux kernel vulnerabilities (USN-6999-1)

The remote Ubuntu 24.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-6999-1 advisory. Chenyuan Yang discovered that the CEC driver driver in the Linux kernel contained a use-after-free vulnerability. A local attacker could use this to caus...

PT-2025-38216

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 5.12.0-0 fbk12 clang 7346 g1bb6f2e7058f 1 Description The Linux kernel contains a flaw related to block device handling during polled I/O operations. Specifically, the code did not sufficiently check for a NULL...