glibc security, bug fix, and enhancement update

2.28-127.0.1 - add Ampere emag to tunable cpu list Patrick McGehearty - add optimized memset for emag - add an ASIMD variant of strlen for falkor - Orabug: 2700101. - Modify glibc-ora28849085.patch so it works with RHCK kernels. - Orabug: 28849085. - Make IOfunlockfile match funlockfile and...

Memory Corruption Vulnerability in Multiple Apple Products (CNVD-2020-65942)

Apple iOS is an operating system developed for mobile devices. apple tvOS is an operating system for Smart TVs. A memory corruption vulnerability exists in the kernel of Apple iOS before 13.6, iPadOS before 13.6, tvOS before 13.4.8, watchOS before 6.2.8, and macOS Catalina before 10.15.6. An...

x86 PV guest INVLPG-like flushes may leave stale TLB entries

ISSUE DESCRIPTION x86 PV guest kernels may use hypercalls with INVLPG-like behavior to invalidate TLB entries even after changes to non-leaf page tables. Such changes to non-leaf page tables will, however, also render stale possible TLB entries created by Xen's internal use of linear page tables ...

UBUNTU-CVE-2020-24490

Improper buffer restrictions in BlueZ may allow an unauthenticated user to potentially enable denial of service via adjacent access. This affects all Linux kernel versions that support BlueZ...

glibc security, bug fix, and enhancement update

2.17-317.0.1 - Merge RH el7 u8 patches with Oracle patches Review-exception: Simple merge - Adding Mike Fabians C.utf-8 patch C.utf-8 is a unicode-aware version of the C locale Orabug 29784239. Reviewed-by: Jose E. Marchesi - Remove glibc-ora28641867.patch as duplicate of glibc-rh1705899-4.patch ...

Denial Of Service (DoS)

xen is vulnerable to denial of service DoS. An issue was discovered in Xen through 4.14.x. x86 PV guest kernels can experience denial of service via SYSENTER. The SYSENTER instruction leaves various state sanitization activities to software. One of Xen's sanitization paths injects a GP fault, and...

Denial Of Service (DoS)

xen is vulnerable to denial of service DoS. There is a lack of preemption in evtchnreset / evtchndestroy. In particular, the FIFO event channel model allows guests to have a large number of event channels active at a time. Closing all of these when resetting all event channels or when cleaning up...

CVE-2020-25601

An issue was discovered in Xen through 4.14.x. There is a lack of preemption in evtchnreset / evtchndestroy. In particular, the FIFO event channel model allows guests to have a large number of event channels active at a time. Closing all of these when resetting all event channels or when cleaning...

CVE-2020-25596

An issue was discovered in Xen through 4.14.x. x86 PV guest kernels can experience denial of service via SYSENTER. The SYSENTER instruction leaves various state sanitization activities to software. One of Xen's sanitization paths injects a GP fault, and incorrectly delivers it twice to the guest...

CVE-2020-25601

An issue was discovered in Xen through 4.14.x. There is a lack of preemption in evtchnreset / evtchndestroy. In particular, the FIFO event channel model allows guests to have a large number of event channels active at a time. Closing all of these when resetting all event channels or when cleaning...

GRUB2: avoid loading unsigned kernels when GRUB is booted directly under secureboot without shim

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The vulnerability of the enable_sacf_uaccess function in Linux operating system kernels, which allows a hacker to trigger a service failure

The vulnerability of the enablesacfuaccess function in Linux operating system kernels is related to errors during multi-threaded tasks race conditions. Exploiting this vulnerability can allow an attacker to cause service failures...

CVE-2020-15705 GRUB2: avoid loading unsigned kernels when GRUB is booted directly under secureboot without shim

GRUB2 fails to validate kernel signature when booted directly without shim, allowing secure boot to be bypassed. This only affects systems where the kernel signing certificate has been imported directly into the secure boot database and the GRUB image is booted directly without the use of shim...

Kernel update: Virtuozzo ReadyKernel patch 108.0 for Virtuozzo 7.0, Virtuozzo Infrastructure Platform 2.5, 3.0, Virtuozzo Hybrid Infrastructure 3.5

The cumulative Virtuozzo ReadyKernel patch was updated with stability fixes. The patch applies to all supported kernels of Virtuozzo 7.0, Virtuozzo Infrastructure Platform, Virtuozzo Hybrid Infrastructure. Vulnerability id: PSBM-104517 3.10.0-862.20.2.vz7.73.24 to 3.10.0-1062.12.1.vz7.131.10 ext4...

The vulnerability of the sg_write function in Linux operating system kernels, allowing a hacker to execute arbitrary code

The vulnerability of the sgwrite function in Linux operating system kernels is related to the use of memory after it is freed. Exploiting this vulnerability can allow an attacker to execute arbitrary code...

Integer overflow

TensorFlow before 1.7.0 has an integer overflow that causes an out-of-bounds read, possibly causing disclosure of the contents of process memory. This occurs in the DecodeBmp feature of the BMP decoder in core/kernels/decodebmpop.cc...

CVE-2019-15792

In shiftfs, a non-upstream patch to the Linux kernel included in the Ubuntu 5.0 and 5.3 kernel series, shiftfsbtrfsioctlfdreplace calls fdgetoldfd, then without further checks passes the resulting file into shiftfsrealfdget, which casts file-privatedata, a void that points to a filesystem-depende...

Input validation

Overlayfs in the Linux kernel and shiftfs, a non-upstream patch to the Linux kernel included in the Ubuntu 5.0 and 5.3 kernel series, both replace vma-vmfile in their mmap handlers. On error the original value is not restored, and the reference is put for the file to which vmfile points. On...

[SECURITY] Fedora 32 Update: bubblewrap-0.4.1-1.fc32

Bubblewrap /usr/bin/bwrap is a core execution engine for unprivileged containers that works as a setuid binary on kernels without user namespaces...

CVE-2020-8835

In the Linux kernel 5.5.0 and newer, the bpf verifier kernel/bpf/verifier.c did not properly restrict the register bounds for 32-bit operations, leading to out-of-bounds reads and writes in kernel memory. The vulnerability also affects the Linux 5.4 stable series, starting with v5.4.7, as the...