Ubuntu: Security Advisory (USN-319-2)

The remote host is missing an update for the SPDX-FileCopyrightText: 2022 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...

An integer overflow in util-linux through 2.37.1 can potentially cause a buffer overflow if an attacker were able to use system resources in a way that leads to a large number in the /proc/sysvipc/sem file. NOTE: this is unexploitable in GNU C Library environments and possibly in all realistic environments.

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CVE-2020-10774

A memory disclosure flaw was found in the Linux kernel's versions before 4.18.0-193.el8 in the sysctl subsystem when reading the /proc/sys/kernel/rhfeatures file. This flaw allows a local user to read uninitialized values from the kernel memory. The highest threat from this vulnerability is to...

CVE-2021-21732

A mobile phone of ZTE is impacted by improper access control vulnerability. Due to improper permission settings, third-party applications can read some files in the proc file system without authorization. Attackers could exploit this vulnerability to obtain sensitive information. This affects Axo...

CVE-2021-21732

A mobile phone of ZTE is impacted by improper access control vulnerability. Due to improper permission settings, third-party applications can read some files in the proc file system without authorization. Attackers could exploit this vulnerability to obtain sensitive information. This affects Axo...

CVE-2021-21732

A mobile phone of ZTE is impacted by improper access control vulnerability. Due to improper permission settings, third-party applications can read some files in the proc file system without authorization. Attackers could exploit this vulnerability to obtain sensitive information. This affects Axo...

kernel: kernel stack information leak on s390/s390x

A stack information leak flaw was found in s390/s390x in the Linux kernel’s memory manager functionality, where it incorrectly writes to the /proc/sys/vm/cmmtimeout file. This flaw allows a local user to see the kernel data...

UBUNTU-CVE-2020-10773

A stack information leak flaw was found in s390/s390x in the Linux kernel’s memory manager functionality, where it incorrectly writes to the /proc/sys/vm/cmmtimeout file. This flaw allows a local user to see the kernel data...

CVE-2020-10773

A stack information leak flaw was found in s390/s390x in the Linux kernel’s memory manager functionality, where it incorrectly writes to the /proc/sys/vm/cmmtimeout file. This flaw allows a local user to see the kernel data. Mitigation Mitigation for this issue is either not available or the...

Denial Of Service (DoS)

Kernel is vulnerable to denial of service DoS. The proc file system could allow a local, unprivileged user to obtain sensitive information or possibly cause integrity issues...

DEBIAN-CVE-2019-18805

An issue was discovered in net/ipv4/sysctlnetipv4.c in the Linux kernel before 5.0.11. There is a net/ipv4/tcpinput.c signed integer overflow in tcpackupdatertt when userspace writes a very large integer to /proc/sys/net/ipv4/tcpminrttwlen, leading to a denial of service or possibly unspecified...

USN-3910-2 linux-lts-xenial, linux-aws vulnerabilities

USN-3910-1 fixed vulnerabilities in the Linux kernel for Ubuntu 16.04 LTS. This update provides the corresponding updates for the Linux Hardware Enablement HWE kernel from Ubuntu 16.04 LTS for Ubuntu 14.04 LTS. It was discovered that the f2fs filesystem implementation in the Linux kernel did not...

USN-3880-1 linux vulnerabilities

It was discovered that the CIFS client implementation in the Linux kernel did not properly handle setup negotiation during session recovery, leading to a NULL pointer exception. An attacker could use this to create a malicious CIFS server that caused a denial of service client system crash...

Linux - Broken uid/gid Mapping for Nested User Namespaces

commit 6397fac4915a "userns: bump idmap limits to 340" increases the number of possible uid/gid mappings that a namespace can have from 5 to 340. This is implemented by switching to a different data structure if the number of mappings exceeds 5: Instead of linear search over an unsorted array of...

kernel: fuse-backed file mmap-ed onto process cmdline arguments causes denial of service

By mmaping a FUSE-backed file onto a process's memory containing command line arguments or environment strings, an attacker can cause utilities from psutils or procps such as ps, w or any other program which makes a read call to the /proc//cmdline or /proc//environ files to block indefinitely...

kernel: fuse-backed file mmap-ed onto process cmdline arguments causes denial of service

By mmaping a FUSE-backed file onto a process's memory containing command line arguments or environment strings, an attacker can cause utilities from psutils or procps such as ps, w or any other program which makes a read call to the /proc//cmdline or /proc//environ files to block indefinitely...

USN-3752-3 linux-azure, linux-oem, linux-gcp vulnerabilities

It was discovered that, when attempting to handle an out-of-memory situation, a null pointer dereference could be triggered in the Linux kernel in some circumstances. A local attacker could use this to cause a denial of service system crash. CVE-2018-1000200 Wen Xu discovered that the XFS...

procps: Integer overflows leading to heap overflow in file2strvec

Multiple integer overflows leading to heap corruption flaws were discovered in file2strvec. These vulnerabilities can lead to privilege escalation for a local attacker who can create entries in procfs by starting processes, which will lead to crashes or arbitrary code execution in proc utilities...

procps: Integer overflows leading to heap overflow in file2strvec

Multiple integer overflows leading to heap corruption flaws were discovered in file2strvec. These vulnerabilities can lead to privilege escalation for a local attacker who can create entries in procfs by starting processes, which will lead to crashes or arbitrary code execution in proc utilities...

CVE-2017-11067

In Android for MSM, Firefox OS for MSM, QRD Android, with all Android releases from CAF using the Linux kernel, the Athdiag procfs entry does not have a proper address sanity check which may potentially lead to the use of an out-of-range pointer offset...