// For flags

CVE-2014-9419

kernel: partial ASLR bypass through TLS base addresses leak

Severity Score

2.1
*CVSS v2

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

The __switch_to function in arch/x86/kernel/process_64.c in the Linux kernel through 3.18.1 does not ensure that Thread Local Storage (TLS) descriptors are loaded before proceeding with other steps, which makes it easier for local users to bypass the ASLR protection mechanism via a crafted application that reads a TLS base address.

La función The __switch_to en arch/x86/kernel/process_64.c en el Kernel de Linux a través de 3.18.1 no asegura que los descriptores Thread Local Storage (TLS) se carguen antes de proceder con otros pasos, lo que que sea más fácil para los usuarios locales evadir el mecanismo de protección ASLR a través de una aplicación modificada que lee una dirección base TLS

An information leak flaw was found in the way the Linux kernel changed certain segment registers and thread-local storage (TLS) during a context switch. A local, unprivileged user could use this flaw to leak the user space TLS base address of an arbitrary process.

*Credits: N/A
CVSS Scores
Attack Vector
Local
Attack Complexity
Low
Authentication
None
Confidentiality
Partial
Integrity
None
Availability
None
Attack Vector
Local
Attack Complexity
Medium
Authentication
None
Confidentiality
Partial
Integrity
None
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2014-12-25 CVE Reserved
  • 2014-12-26 CVE Published
  • 2023-03-08 EPSS Updated
  • 2024-08-06 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
CAPEC
References (20)
URL Tag Source
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=f647d7c155f069c1a068030255c300663516420e X_refsource_confirm
http://www.openwall.com/lists/oss-security/2014/12/25/1 Mailing List
http://www.securityfocus.com/bid/71794 Vdb Entry
https://github.com/torvalds/linux/commit/f647d7c155f069c1a068030255c300663516420e X_refsource_confirm
URL Date SRC
URL Date SRC
URL Date SRC
http://lists.fedoraproject.org/pipermail/package-announce/2015-January/147864.html 2023-11-07
http://lists.fedoraproject.org/pipermail/package-announce/2015-January/147973.html 2023-11-07
http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00020.html 2023-11-07
http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00009.html 2023-11-07
http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00015.html 2023-11-07
http://rhn.redhat.com/errata/RHSA-2015-1081.html 2023-11-07
http://www.debian.org/security/2015/dsa-3128 2023-11-07
http://www.mandriva.com/security/advisories?name=MDVSA-2015:058 2023-11-07
http://www.ubuntu.com/usn/USN-2515-1 2023-11-07
http://www.ubuntu.com/usn/USN-2516-1 2023-11-07
http://www.ubuntu.com/usn/USN-2517-1 2023-11-07
http://www.ubuntu.com/usn/USN-2518-1 2023-11-07
http://www.ubuntu.com/usn/USN-2541-1 2023-11-07
http://www.ubuntu.com/usn/USN-2542-1 2023-11-07
https://bugzilla.redhat.com/show_bug.cgi?id=1177260 2015-11-19
https://access.redhat.com/security/cve/CVE-2014-9419 2015-11-19
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Linux
Search vendor "Linux"
 Linux Kernel
Search vendor "Linux" for product "Linux Kernel"
 <= 3.18.1
Search vendor "Linux" for product "Linux Kernel" and version " <= 3.18.1"
-
Affected