• Home
  • Cyber Crime
  • Cyber warfare
  • APT
  • Data Breach
  • Deep Web
  • Digital ID
  • Hacking
  • Hacktivism
  • Intelligence
  • Internet of Things
  • Laws and regulations
  • Malware
  • Mobile
  • Reports
  • Security
  • Social Networks
  • Terrorism
  • ICS-SCADA
  • POLICIES
  • Contact me
MUST READ

200 Swedish municipalities impacted by a major cyberattack on IT provider

 | 

TransUnion discloses a data breach impacting over 4.4 million customers

 | 

NSA, NCSC, and allies detailed TTPs associated with Chinese APT actors targeting critical infrastructure Orgs

 | 

UNC6395 targets Salesloft in Drift OAuth token theft campaign

 | 

Over 28,000 Citrix instances remain exposed to critical RCE flaw CVE-2025-7775

 | 

U.S. CISA adds Citrix NetScaler flaw to its Known Exploited Vulnerabilities catalog

 | 

Healthcare Services Group discloses 2024 data breach that impacted 624,496 people

 | 

ESET warns of PromptLock, the first AI-driven ransomware

 | 

China linked UNC6384 targeted diplomats by hijacking web traffic

 | 

Farmers Insurance discloses a data breach impacting 1.1M customers

 | 

Citrix fixed three NetScaler flaws, one of them actively exploited in the wild

 | 

Auchan discloses data breach: data of hundreds of thousands of customers exposed

 | 

U.S. CISA adds Citrix Session Recording, and Git flaws to its Known Exploited Vulnerabilities catalog

 | 

Docker fixes critical Desktop flaw allowing container escapes

 | 

Malicious apps with +19M installs removed from Google Play because spreading Anatsa banking trojan and other malware

 | 

Pakistan-linked APT36 abuses Linux .desktop files to drop custom malware in new campaign

 | 

Android.Backdoor.916.origin malware targets Russian business executives

 | 

Electronics manufacturer Data I/O took offline operational systems following a ransomware attack

 | 

IoT under siege: The return of the Mirai-based Gayfemboy Botnet

 | 

SECURITY AFFAIRS MALWARE NEWSLETTER ROUND 59

 | 
  • Home
  • Cyber Crime
  • Cyber warfare
  • APT
  • Data Breach
  • Deep Web
  • Digital ID
  • Hacking
  • Hacktivism
  • Intelligence
  • Internet of Things
  • Laws and regulations
  • Malware
  • Mobile
  • Reports
  • Security
  • Social Networks
  • Terrorism
  • ICS-SCADA
  • POLICIES
  • Contact me
  • Home
  • Breaking News
  • Hacking
  • Linux kernel affected by a local privilege escalation vulnerability

Linux kernel affected by a local privilege escalation vulnerability

Pierluigi Paganini October 16, 2017

Cisco issued a security advisory on a local privilege escalation vulnerability in the Linux Kernel, patch it as soon as possible.

On Friday, Cisco issued a security advisory on a local privilege escalation vulnerability in the Advanced Linux Sound Architecture (ALSA).

The vulnerability in the Linux Kernel, tracked as CVE-2017-15265, is due to a use-after-free memory error in the ALSA sequencer interface, an attacker could exploit it by running a crafted application on a vulnerable system.

“A vulnerability in the Linux Kernel could allow a local attacker to gain elevated privileges on a targeted system.” reads the Cisco security advisory.

“The vulnerability is due to a use-after-free memory error in the ALSA sequencer interface of the affected application. An attacker could exploit this vulnerability by running a crafted application on a targeted system. A successful exploit could allow the attacker to gain elevated privileges on the targeted system.”

According to a discussion at SUSE’s Bugzilla, a patch for the Linux Kernel vulnerability was added to the ALSA git tree on October 11, .

“We may fix this in a few different ways, and in this patch, it’s fixed simply by taking the refcount properly at snd_seq_create_port() and letting the caller unref the object after use.” states the description on the ALSA git tree.

The use-after-free is triggered by a bug in snd_seq_create_port() as explained in the advisory:

“There is a potential race window opened at creating and deleting a port via ioctl, as spotted by fuzzing. snd_seq_create_port() creates a port object and returns its pointer, but it doesn’t take the refcount, thus it can be deleted immediately by another thread. Meanwhile, snd_seq_ioctl_create_port() still calls the function snd_seq_system_client_ev_port_start() with the created port object that is being deleted, and this triggers use-after-free” continues the description.

privilege escalation Linux Kernel

Kernel.org has confirmed the vulnerability, the good news is that to exploit this vulnerability, the attacker must have local access to the targeted system, a circumstance that drastically reduces the likelihood of a successful exploit.

[adrotate banner=”9″] [adrotate banner=”12″]

Pierluigi Paganini

(Security Affairs – Linux Kernel, privilege escalation)

[adrotate banner=”5″]

[adrotate banner=”13″]


facebook linkedin twitter

Advanced Linux Sound Architecture ALSA Hacking LINUX Linux Kernel privilege escalation

you might also like

Pierluigi Paganini August 28, 2025
200 Swedish municipalities impacted by a major cyberattack on IT provider
Read more
Pierluigi Paganini August 28, 2025
TransUnion discloses a data breach impacting over 4.4 million customers
Read more

leave a comment

newsletter

Subscribe to my email list and stay
up-to-date!

    recent articles

    200 Swedish municipalities impacted by a major cyberattack on IT provider

    Security / August 28, 2025

    TransUnion discloses a data breach impacting over 4.4 million customers

    Data Breach / August 28, 2025

    NSA, NCSC, and allies detailed TTPs associated with Chinese APT actors targeting critical infrastructure Orgs

    Intelligence / August 28, 2025

    UNC6395 targets Salesloft in Drift OAuth token theft campaign

    Hacking / August 28, 2025

    Over 28,000 Citrix instances remain exposed to critical RCE flaw CVE-2025-7775

    Hacking / August 27, 2025

    To contact me write an email to:

    Pierluigi Paganini :
    pierluigi.paganini@securityaffairs.co

    LEARN MORE

    QUICK LINKS

    • Home
    • Cyber Crime
    • Cyber warfare
    • APT
    • Data Breach
    • Deep Web
    • Digital ID
    • Hacking
    • Hacktivism
    • Intelligence
    • Internet of Things
    • Laws and regulations
    • Malware
    • Mobile
    • Reports
    • Security
    • Social Networks
    • Terrorism
    • ICS-SCADA
    • POLICIES
    • Contact me

    Copyright@securityaffairs 2024

    We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. By clicking “Accept All”, you consent to the use of ALL the cookies. However, you may visit "Cookie Settings" to provide a controlled consent.
    Cookie SettingsAccept All
    Manage consent

    Privacy Overview

    This website uses cookies to improve your experience while you navigate through the website. Out of these cookies, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities...
    Necessary
    Always Enabled
    Necessary cookies are absolutely essential for the website to function properly. This category only includes cookies that ensures basic functionalities and security features of the website. These cookies do not store any personal information.
    Non-necessary
    Any cookies that may not be particularly necessary for the website to function and is used specifically to collect user personal data via analytics, ads, other embedded contents are termed as non-necessary cookies. It is mandatory to procure user consent prior to running these cookies on your website.
    SAVE & ACCEPT