CVE-2022-49721

CVE-2022-49721 affects the Linux kernel (arm64) ftrace. The root cause is inconsistent handling of PLT entries when calling ftrace trampolines: ftrace_modify_call() can produce out-of-range branches, causing warnings and no code change, or replace the old branch with a BRK, risking a kernel panic...

CVE-2022-49520

CVE-2022-49520 (Linux kernel, arm64 compat): The vulnerability occurs when a compat process executes an unknown syscall above __ARM_NR_COMPAT_END; the kernel incorrectly uses the syscall number as ESR_ELx for the fault, causing arm64_show_signal() to print bogus ESR messages. The fix is to stop u...

CVE-2022-49520 arm64: compat: Do not treat syscall number as ESR_ELx for a bad syscall

In the Linux kernel, the following vulnerability has been resolved: arm64: compat: Do not treat syscall number as ESRELx for a bad syscall If a compat process tries to execute an unknown system call above the ARMNRCOMPATEND number, the kernel sends a SIGILL signal to the offending process...

CVE-2022-49520 arm64: compat: Do not treat syscall number as ESR_ELx for a bad syscall

In the Linux kernel, the following vulnerability has been resolved: arm64: compat: Do not treat syscall number as ESRELx for a bad syscall If a compat process tries to execute an unknown system call above the ARMNRCOMPATEND number, the kernel sends a SIGILL signal to the offending process...

CVE-2022-49426 iommu/arm-smmu-v3-sva: Fix mm use-after-free

In the Linux kernel, the following vulnerability has been resolved: iommu/arm-smmu-v3-sva: Fix mm use-after-free We currently call arm64mmcontextput without holding a reference to the mm, which can result in use-after-free. Call mmgrab/mmdrop to ensure the mm only gets freed after we unpinned the...

CVE-2022-49341 bpf, arm64: Clear prog->jited_len along prog->jited

In the Linux kernel, the following vulnerability has been resolved: bpf, arm64: Clear prog-jitedlen along prog-jited syzbot reported an illegal copytouser attempt from bpfproggetinfobyfd 1 There was no repro yet on this bug, but I think that commit 0aef499f3172 "mm/usercopy: Detect vmalloc...

CVE-2022-49341

The CVE-2022-49341 entry concerns the Linux kernel vulnerability where bpf, arm64 paths could reveal kernel memory via copy_to_user() in bpf_prog_get_info_by_fd() due to incorrect handling of prog->jited_len. The issue arises when prog->jited_len is set (e.g., to 43) but prog->bpf_func i...

CVE-2022-49090

The CVE-2022-49090 entry concerns Linux kernel arch/arm64: Fix topology initialization for core scheduling. The issue arises when store_cpu_topology() does not call update_siblings_masks() before notify_cpu_starting(), causing core scheduling data structures to reflect an incorrect topology. If s...

CVE-2022-49090 arch/arm64: Fix topology initialization for core scheduling

In the Linux kernel, the following vulnerability has been resolved: arch/arm64: Fix topology initialization for core scheduling Arm64 systems rely on storecputopology to call updatesiblingsmasks to transfer the toplogy to the various cpu masks. This needs to be done before the call to...

CVE-2022-49090 arch/arm64: Fix topology initialization for core scheduling

In the Linux kernel, the following vulnerability has been resolved: arch/arm64: Fix topology initialization for core scheduling Arm64 systems rely on storecputopology to call updatesiblingsmasks to transfer the toplogy to the various cpu masks. This needs to be done before the call to...

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 stems from the arm64 architecture where the ftracemodifycall function does not properly handle PLT entries...

USN-7289-3 linux-ibm vulnerabilities

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - ARM64 architecture; - x86 architecture; - Block layer subsystem; - ACPI drivers; - GPU drivers; - HID subsystem; -...

USN-7289-2 linux-azure-5.15, linux-azure-fde-5.15, linux-oracle-5.15 vulnerabilities

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - ARM64 architecture; - x86 architecture; - Block layer subsystem; - ACPI drivers; - GPU drivers; - HID subsystem; -...

USN-7288-2: Linux kernel vulnerabilities

Attila Szász discovered that the HFS+ file system implementation in the Linux Kernel contained a heap overflow vulnerability. An attacker could use a specially crafted file system image that, when mounted, could cause a denial of service system crash or possibly execute arbitrary code...

Ubuntu 20.04 LTS / 22.04 LTS : Linux kernel vulnerabilities (USN-7291-1)

"The remote Ubuntu 20.04 LTS / 22.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-7291-1 advisory. Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update...

Ubuntu 18.04 LTS / 20.04 LTS : Linux kernel vulnerabilities (USN-7293-1)

The remote Ubuntu 18.04 LTS / 20.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-7293-1 advisory. Attila Szsz discovered that the HFS+ file system implementation in the Linux Kernel contained a heap overflow vulnerability. An attacker coul...

Ubuntu 20.04 LTS : Linux kernel vulnerabilities (USN-7289-2)

"The remote Ubuntu 20.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-7289-2 advisory. Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws i...

Ubuntu 20.04 LTS : Linux kernel vulnerabilities (USN-7288-2)

"The remote Ubuntu 20.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-7288-2 advisory. Attila Szsz discovered that the HFS+ file system implementation in the Linux Kernel contained a heap overflow vulnerability. An attacker could use a...

USN-7289-1: Linux kernel vulnerabilities

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - ARM64 architecture; - x86 architecture; - Block layer subsystem; - ACPI drivers; - GPU drivers; - HID subsystem; -...

USN-7289-1 linux-azure, linux-azure-fde, linux-gkeop, linux-nvidia, linux-oracle vulnerabilities

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - ARM64 architecture; - x86 architecture; - Block layer subsystem; - ACPI drivers; - GPU drivers; - HID subsystem; -...