CVE-2020-14381
published 2020-12-03CVE-2020-14381: A flaw was found in the Linux kernel’s futex implementation. This flaw allows a local attacker to corrupt system memory or escalate their privileges when…
PriorityP342high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
EPSS
0.83%
53.5th percentile
A flaw was found in the Linux kernel’s futex implementation. This flaw allows a local attacker to corrupt system memory or escalate their privileges when creating a futex on a filesystem that is about to be unmounted. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.
Affected
10 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 5.5.13-1 (bookworm) | linux 5.5.13-1 (bookworm) |
| android | — | — | |
| linux | linux_kernel | < 5.6 | 5.6 |
| linux | linux_kernel | — | — |
| linux | linux_kernel | — | — |
| linux | linux_kernel | >= 0 < 5.5.13-1 | 5.5.13-1 |
| linux | linux_kernel | >= 0 < 5.5.13-1 | 5.5.13-1 |
| linux | linux_kernel | >= 0 < 5.5.13-1 | 5.5.13-1 |
| linux | linux_kernel | >= 0 < 5.5.13-1 | 5.5.13-1 |
| msrc | cm1_kernel_5.4.91-1_on_cbl_mariner_1.0 | — | — |
CVSS provenance
nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
nvdv2.04.6MEDIUMAV:L/AC:L/Au:N/C:P/I:P/A:P
osv7.8HIGH
vendor_debian7.8HIGH
vendor_msrc7.8HIGH
vendor_redhat7.8HIGH
Stop checking back — get the weekly exploitation signal.
Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.
CISA ICS
Siemens SIMATIC
cisa_ics·2024-03-14
Siemens SIMATIC
ICS Advisory
##
Siemens SIMATIC
Release DateMarch 14, 2024
Alert CodeICSA-24-074-07
As of January 10, 2023, CISA will no longer be updating ICS security advisories for Siemens product vulnerabilities beyond the initial advisory. For the most up-to-date information on vulnerabilities in this advisory, please see Siemens' ProductCERT Security Advisories (CERT Services | Services | Siemens Global).
View CSAF
## 1. EXECUTIVE SUMMARY
- CVSS v3 9.8
- ATTENTION: Exploitable remotely/low attack complexity
- Vendor: Siemens
- Equipment: SIMATIC
- Vulnerabilities: Improper Restriction of Operations within the Bounds of a Memory Buffer, Improper Input Validation, Missing Encryption of Sensitive Data, Incorrect Permission Assignment for Critical Resource, Expected Beha
Android
CVE-2020-14381: Futex
vendor_android·2021-08-01·CVSS 7.8
CVE-2020-14381 [HIGH] CVE-2020-14381: Futex
Android Security Bulletin 2021-08-01
CVE: CVE-2020-14381
Severity: HIGH
Type: EoP
Component: Futex
References: A-175193031
Upstream kernel
Microsoft
A flaw was found in the Linux kernel’s futex implementation. This flaw allows a local attacker to corrupt system memory or escalate their privileges when creating a futex on a filesystem that is about
vendor_msrc·2020-12-08·CVSS 7.8
CVE-2020-14381 [HIGH] CWE-416 A flaw was found in the Linux kernel’s futex implementation. This flaw allows a local attacker to corrupt system memory or escalate their privileges when creating a futex on a filesystem that is about
A flaw was found in the Linux kernel’s futex implementation. This flaw allows a local attacker to corrupt system memory or escalate their privileges when creating a futex on a filesystem that is about to be unmounted. The highest threat from this vulnerability is to confidentiality integrity as well as system availability.
FAQ: Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability?
One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the most recent and most secure versions of the open source libraries with which the distro is composed. Microsoft is committed to transparency in this work which is why we began publishing CSAF/VEX
Red Hat
kernel: referencing inode of removed superblock in get_futex_key() causes UAF
vendor_redhat·2020-05-07·CVSS 7.8
CVE-2020-14381 [HIGH] CWE-416 kernel: referencing inode of removed superblock in get_futex_key() causes UAF
kernel: referencing inode of removed superblock in get_futex_key() causes UAF
A flaw was found in the Linux kernel’s futex implementation. This flaw allows a local attacker to corrupt system memory or escalate their privileges when creating a futex on a filesystem that is about to be unmounted. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.
A flaw was found in the Linux kernel’s futex implementation. This flaw allows a local attacker to corrupt system memory or escalate their privileges when creating a futex on a filesystem that is about to be unmounted. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.
Mitigation: Mitigation for this issue is either not available or
Debian
CVE-2020-14381: linux - A flaw was found in the Linux kernel’s futex implementation. This flaw allows a ...
vendor_debian·2020·CVSS 7.8
CVE-2020-14381 [HIGH] CVE-2020-14381: linux - A flaw was found in the Linux kernel’s futex implementation. This flaw allows a ...
A flaw was found in the Linux kernel’s futex implementation. This flaw allows a local attacker to corrupt system memory or escalate their privileges when creating a futex on a filesystem that is about to be unmounted. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.
Scope: local
bookworm: resolved (fixed in 5.5.13-1)
bullseye: resolved (fixed in 5.5.13-1)
forky: resolved (fixed in 5.5.13-1)
sid: resolved (fixed in 5.5.13-1)
trixie: resolved (fixed in 5.5.13-1)
GHSA
GHSA-69w4-9w32-v3qh: A flaw was found in the Linux kernel’s futex implementation
ghsa_unreviewed·2022-05-24
CVE-2020-14381 [HIGH] CWE-416 GHSA-69w4-9w32-v3qh: A flaw was found in the Linux kernel’s futex implementation
A flaw was found in the Linux kernel’s futex implementation. This flaw allows a local attacker to corrupt system memory or escalate their privileges when creating a futex on a filesystem that is about to be unmounted. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.
OSV
CVE-2020-14381: In futex_setup_timer and related functions of futex
osv·2021-08-01
CVE-2020-14381 CVE-2020-14381: In futex_setup_timer and related functions of futex
In futex_setup_timer and related functions of futex.c, there is a possible way to corrupt kernel memory due to a use after free. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.
OSV
CVE-2020-14381: A flaw was found in the Linux kernel’s futex implementation
osv·2020-12-03·CVSS 7.8
CVE-2020-14381 [HIGH] CVE-2020-14381: A flaw was found in the Linux kernel’s futex implementation
A flaw was found in the Linux kernel’s futex implementation. This flaw allows a local attacker to corrupt system memory or escalate their privileges when creating a futex on a filesystem that is about to be unmounted. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2020-14381 kernel: referencing inode of removed superblock in get_futex_key() causes UAF. [fedora-all]
bugzilla·2020-09-01·CVSS 7.8
CVE-2020-14381 [HIGH] CVE-2020-14381 kernel: referencing inode of removed superblock in get_futex_key() causes UAF. [fedora-all]
CVE-2020-14381 kernel: referencing inode of removed superblock in get_futex_key() causes UAF. [fedora-all]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of fedora-all.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.
Please also mention the CVE IDs being fixed in the RPM changelog and the
fedpkg commit message.
NOTE: this issue affect
Bugzilla
CVE-2020-14381 kernel: referencing inode of removed superblock in get_futex_key() causes UAF
bugzilla·2020-09-01·CVSS 7.8
CVE-2020-14381 [HIGH] CVE-2020-14381 kernel: referencing inode of removed superblock in get_futex_key() causes UAF
CVE-2020-14381 kernel: referencing inode of removed superblock in get_futex_key() causes UAF
A flaw was found in the Linux kernels fast user mutex (futex) wait operation which indexed a file (vi inode) mapping that was no longer valid. This requires an attacker with a local account to be able to issue a FUTEX_WAIT (man futex) on a filesystem which is about to be unmounted. The superblock operations on this referenced struct would be able to create a use-after-free. This could allow for memory corruption and possible privilege escalation.
Discussion:
Upstream patch:
https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?id=8019ad13ef7f64be44d4f892af9c840179009254
---
Created kernel tracking bugs for this issue:
Affects: fedora-all [bug 1874332]
---
This was fixed for Fe
arXiv
KernJC: Automated Vulnerable Environment Generation for Linux Kernel Vulnerabilities
arxiv_fulltext·2024-09-24
KernJC: Automated Vulnerable Environment Generation for Linux Kernel Vulnerabilities
: Automated Vulnerable Environment Generation for Linux Kernel Vulnerabilities
Bonan Ruan
National University of Singapore
Jiahao Liu
National University of Singapore
Chuqi Zhang
National University of Singapore
Zhenkai Liang
National University of Singapore
## Abstract
Linux kernel vulnerability reproduction is a critical task in system security.
To reproduce a kernel vulnerability, the vulnerable environment and the Proof of Concept (PoC) program are needed.
Most existing research focuses on the generation of PoC, while the construction of environment is overlooked.
However, establishing an effective vulnerable environment to trigger a vulnerability is challenging.
Firstly, it is hard to guarantee that the selected kernel version for reproduction is vulnerable, as the vulner
arXiv
Timeloops: Automatic System Call Policy Learning for Containerized Microservices
arxiv_fulltext·2022-09-26
Timeloops: Automatic System Call Policy Learning for Containerized Microservices
Meghna Pancholi
[email protected]
Columbia University
Andreas D. Kellas
[email protected]
Columbia University
Vasileios P. Kemerlis
[email protected]
Brown University
Simha Sethumadhavan
[email protected]
Columbia University
## Abstract
We introduce , a novel technique for automatically learning system
call filtering policies for containerized microservices applications. At
run-time, automatically learns which system calls a program should
be allowed to invoke, while rejecting attempts to call spurious system calls.
Further, addresses many of the shortcomings of state-of-the-art
static analysis-based techniques, such as the ability to generate tight filters
for programs written in interpreted languages such as PHP, Python, and
JavaScript. has a simple and rob
https://bugzilla.redhat.com/show_bug.cgi?id=1874311https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=8019ad13ef7f64be44d4f892af9c840179009254https://bugzilla.redhat.com/show_bug.cgi?id=1874311https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=8019ad13ef7f64be44d4f892af9c840179009254
2020-12-03
Published