Linux kernel 缓冲区错误漏洞

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. Linux kernel has an elevation of privilege vulnerability that originates from an out-of-bounds access to physical memory beyond the end of the buffer in the file iouring, which...

Ubuntu 20.04 LTS : Linux kernel (GCP) vulnerabilities (USN-6107-1)

The remote Ubuntu 20.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-6107-1 advisory. It was discovered that the Traffic-Control Index TCINDEX implementation in the Linux kernel did not properly perform filter deactivation in some...

USN-6107-1 linux-gcp-5.15 vulnerabilities

It was discovered that the Traffic-Control Index TCINDEX implementation in the Linux kernel did not properly perform filter deactivation in some situations. A local attacker could possibly use this to gain elevated privileges. Please note that with the fix for this CVE, kernel support for the...

The vulnerability of the io_sqe_buffer_register() function in the io_uring/rsrc.c module of the Linux operating system allows a hacker to increase their privileges within the system or gain access to protected information.

The vulnerability of the iosqebufferregister function in the iouring/rsrc.c module of the Linux kernel is related to the out-of-bound access to allocated memory. Exploiting this vulnerability can allow an attacker to enhance their privileges within the system or gain access to protected informati...

qemu-kvm security update

6.1.1-6.el9 - Update changelog Karl Heubaum Orabug: 35343538 - ebpf: fix compatibility with libbpf 1.0+ Shreesh Adiga Orabug: 35268538 - ebpf: replace deprecated bpfprogramsetsocketfilter Haochen Tong Orabug: 35268538 - CVE-2023-1544 is not applicable to Oracle QEMU 6.1.1 Karl Heubaum Orabug:...

Ubuntu 22.04 LTS : Linux kernel (OEM) vulnerabilities (USN-6071-1)

The remote Ubuntu 22.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-6071-1 advisory. It was discovered that the Traffic-Control Index TCINDEX implementation in the Linux kernel did not properly perform filter deactivation in some...

There exists a use-after-free vulnerability in the Linux kernel through io_uring and the IORING_OP_SPLICE operation. If IORING_OP_SPLICE is missing the IO_WQ_WORK_FILES flag which signals that the operation won't use current->nsproxy so its reference counter is not increased. This assumption is not always true as calling io_splice on specific files will call the get_uts function which will use current->nsproxy leading to invalidly decreasing its reference counter later causing the use-after-free vulnerability. We recommend upgrading to version 5.10.160 or above

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CVE-2023-2598

A flaw was found in the fixed buffer registration code for iouring iosqebufferregister in iouring/rsrc.c in the Linux kernel that allows out-of-bounds access to physical memory beyond the end of the buffer. This flaw enables full local privilege escalation...

USN-6072-1: Linux kernel (OEM) vulnerabilities

It was discovered that the Traffic-Control Index TCINDEX implementation in the Linux kernel did not properly perform filter deactivation in some situations. A local attacker could possibly use this to gain elevated privileges. Please note that with the fix for this CVE, kernel support for the...

USN-6072-1 linux-oem-6.0 vulnerabilities

It was discovered that the Traffic-Control Index TCINDEX implementation in the Linux kernel did not properly perform filter deactivation in some situations. A local attacker could possibly use this to gain elevated privileges. Please note that with the fix for this CVE, kernel support for the...

USN-6071-1: Linux kernel (OEM) vulnerabilities

It was discovered that the Traffic-Control Index TCINDEX implementation in the Linux kernel did not properly perform filter deactivation in some situations. A local attacker could possibly use this to gain elevated privileges. Please note that with the fix for this CVE, kernel support for the...

USN-6071-1 linux-oem-5.17 vulnerabilities

It was discovered that the Traffic-Control Index TCINDEX implementation in the Linux kernel did not properly perform filter deactivation in some situations. A local attacker could possibly use this to gain elevated privileges. Please note that with the fix for this CVE, kernel support for the...

USN-6070-1: Linux kernel vulnerabilities

It was discovered that the Traffic-Control Index TCINDEX implementation in the Linux kernel did not properly perform filter deactivation in some situations. A local attacker could possibly use this to gain elevated privileges. Please note that with the fix for this CVE, kernel support for the...

CVE-2023-2236

A use-after-free vulnerability was found in ioinstallfixedfile in iouring/filetable.c in the Linux Kernel’s iouring subsystem. This flaw allows an attacker to achieve local privilege escalation. Mitigation Mitigation for this issue is either not available or the currently available options don't...

SUSE CVE-2023-2598

A flaw was found in the fixed buffer registration code for iouring iosqebufferregister in iouring/rsrc.c in the Linux kernel that allows out-of-bounds access to physical memory beyond the end of the buffer. This flaw enables full local privilege escalation...

The vulnerability of the io_install_fixed_file() function in the io_uring subsystem of Linux kernels allows a malicious actor to escalate their privileges or cause service failures.

The vulnerability of the ioinstallfixedfile function in the iouring subsystem of Linux kernels relates to the use of memory after it is freed. Exploiting this vulnerability can allow an attacker to increase their privileges or cause service interruptions...

UBUNTU-CVE-2023-2430

A vulnerability was found due to missing lock for IOPOLL flaw in iocqringeventoverflow in iouring.c in Linux Kernel. This flaw allows a local attacker with user privilege to trigger a Denial of Service threat...

SUSE CVE-2023-2430

A vulnerability was found due to missing lock for IOPOLL flaw in iocqringeventoverflow in iouring.c in Linux Kernel. This flaw allows a local attacker with user privilege to trigger a Denial of Service threat...

PT-2023-2762 · Linux · Linux Kernel

Name of the Vulnerable Software and Affected Versions: Linux kernel affected versions not specified Description: A flaw was found in the fixed buffer registration code for io uring io sqe buffer register in io uring/rsrc.c in the Linux kernel that allows out-of-bounds access to physical memory...

CVE-2023-2236

A use-after-free vulnerability in the Linux Kernel iouring subsystem can be exploited to achieve local privilege escalation. Both ioinstallfixedfile and its callers call fput in a file in case of an error, causing a reference underflow which leads to a use-after-free vulnerability. We recommend...