Linux kernel 安全漏洞

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 the Linux kernel that originates in the block, bfq module where the bfqlimitdepth function accesses bfqq unlocked, which could lead to reuse...

kernel: blk-rq-qos: fix crash on rq_qos_wait vs. rq_qos_wake_function race

In the Linux kernel, the following vulnerability has been resolved: blk-rq-qos: fix crash on rqqoswait vs. rqqoswakefunction race We're seeing crashes from rqqoswakefunction that look like this: BUG: unable to handle page fault for address: ffffafe180a40084 PF: supervisor write access in kernel...

UBUNTU-CVE-2021-47552

In the Linux kernel, the following vulnerability has been resolved: blk-mq: cancel blk-mq dispatch work in both blkcleanupqueue and diskrelease For avoiding to slow down queue destroy, we don't call blkmqquiescequeue in blkcleanupqueue, instead of delaying to cancel dispatch work in...

kernel: blkio memory leakage due to blkcg and some blkgs are not freed after they are made offline.

A flaw was found in the blkgs destruction path in block/blk-cgroup.c in the Linux kernel, leading to a cgroup blkio memory leakage problem. When a cgroup is being destroyed, cgrouprstatflush is only called at cssreleaseworkfn, which is called when the blkcg reference count reaches 0. This circula...

SUSE CVE-2017-12134

The xenbiovecphysmergeable function in drivers/xen/biomerge.c in Xen might allow local OS guest users to corrupt block device data streams and consequently obtain sensitive memory information, cause a denial of service, or gain host OS privileges by leveraging incorrect block IO merge-ability...

SUSE CVE-2018-10689

blktrace aka Block IO Tracing 1.2.0, as used with the Linux kernel and Android, has a buffer overflow in the devmapread function in btt/devmap.c because the device and devno arrays are too small, as demonstrated by an invalid free when using the btt program with a crafted file...

SUSE CVE-2018-12180

Buffer overflow in BlockIo service for EDK II may allow an unauthenticated user to potentially enable escalation of privilege, information disclosure and/or denial of service via network access...

EulerOS 2.0 SP3 : blktrace (EulerOS-SA-2021-1768)

According to the version of the blktrace package installed, the EulerOS installation on the remote host is affected by the following vulnerability : - blktrace aka Block IO Tracing 1.2.0, as used with the Linux kernel and Android, has a buffer overflow in the devmapread function in btt/devmap.c...

An issue was discovered in the Linux kernel before 5.6.5. There is a use-after-free in block/bfq-iosched.c related to bfq_idle_slice_timer_body.

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The vulnerability of the `bfq_idle_slice_timer_body` function in the Linux kernel allows a attacker to compromise the confidentiality, integrity, and accessibility of the protected information.

The vulnerability of the bfqidleslicetimerbody function in the Linux kernel’s block/bfq-iosched.c file relates to the use of memory after it is freed. Exploiting this vulnerability could allow an attacker to compromise the confidentiality, integrity, and accessibility of the protected information...

edk2: Buffer Overflow in BlockIo service for RAM disk

A flaw was found in edk2. When registering a RAM disk whose size is not a multiple of 512 bytes, the BlockIo protocol produced by the RamDiskDxe driver will incur memory read/write overrun. The memory overrun will happen when reading/writing the last block on the RAM disk. The highest threat from...

CVE-2018-10689

blktrace aka Block IO Tracing 1.2.0, as used with the Linux kernel and Android, has a buffer overflow in the devmapread function in btt/devmap.c because the device and devno arrays are too small, as demonstrated by an invalid free when using the btt program with a crafted file...

CVE-2018-10689

blktrace aka Block IO Tracing 1.2.0, as used with the Linux kernel and Android, has a buffer overflow in the devmapread function in btt/devmap.c because the device and devno arrays are too small, as demonstrated by an invalid free when using the btt program with a crafted file...

Ubuntu: Security Advisory (USN-3444-1)

The remote host is missing an update for the SPDX-FileCopyrightText: 2017 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

Ubuntu 16.04 LTS : Linux kernel vulnerabilities (USN-3444-1)

The remote Ubuntu 16.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-3444-1 advisory. Jan H. Schnherr discovered that the Xen subsystem did not properly handle block IO merges correctly in some situations. An attacker in a guest vm could u...

USN-3444-1 linux, linux-aws, linux-gke, linux-kvm, linux-raspi2, linux-snapdragon vulnerabilities

Jan H. Schönherr discovered that the Xen subsystem did not properly handle block IO merges correctly in some situations. An attacker in a guest vm could use this to cause a denial of service host crash or possibly gain administrative privileges in the host. CVE-2017-12134 Andrey Konovalov...

Oracle Linux 5 / 6 : Unbreakable Enterprise kernel (ELSA-2017-3622)

The remote Oracle Linux 5 / 6 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2017-3622 advisory. - Bluetooth: Properly check L2CAP config option output buffer length Ben Seri Orabug: 26796428 CVE-2017-1000251 - xen: fix bio vec merging Roger Pa...

CVE-2017-12134

The xenbiovecphysmergeable function in drivers/xen/biomerge.c in Xen might allow local OS guest users to corrupt block device data streams and consequently obtain sensitive memory information, cause a denial of service, or gain host OS privileges by leveraging incorrect block IO merge-ability...

CVE-2017-12134

The xenbiovecphysmergeable function in drivers/xen/biomerge.c in Xen might allow local OS guest users to corrupt block device data streams and consequently obtain sensitive memory information, cause a denial of service, or gain host OS privileges by leveraging incorrect block IO merge-ability...

linux: Fix Xen block IO merge-ability calculation

ISSUE DESCRIPTION The block layer in Linux may choose to merge adjacent block IO requests. When Linux is running as a Xen guest, the default merging algorithm is replaced with a Xen-specific one. When Linux is running as an x86 PV guest, some BIO's are erroneously merged, corrupting the data stre...