CVE-2015-2830

kernel: int80 fork from 64-bit tasks mishandling

Severity Score

1.9

*CVSS v2

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

arch/x86/kernel/entry_64.S in the Linux kernel before 3.19.2 does not prevent the TS_COMPAT flag from reaching a user-mode task, which might allow local users to bypass the seccomp or audit protection mechanism via a crafted application that uses the (1) fork or (2) close system call, as demonstrated by an attack against seccomp before 3.16.

arch/x86/kernel/entry_64.S en el kernel de Linux anterior a 3.19.2 no impide que el indicador TS_COMPAT llegue a una tarea de modo de usuario, lo que podría permitir a usuarios locales evadir el mecanismo de protección de seccomp o de auditoria a través de una aplicación manipulada que utiliza la llamada de sistema (1) bifurcada o (2) cerrada, tal y como fue demostrado por un ataque sobre seccomp anterior a 3.16.

A flaw was found in the way the Linux kernel's 32-bit emulation implementation handled forking or closing of a task with an 'int80' entry. A local user could potentially use this flaw to escalate their privileges on the system.

*Credits: N/A

CVSS Scores

NISTv2 1.9

Attack Vector

Local

Attack Complexity

Medium

Authentication

None

Confidentiality

None

Integrity

Partial

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2015-04-02 CVE Reserved
2015-04-27 CVE Published
2023-03-08 EPSS Updated
2024-08-06 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-264: Permissions, Privileges, and Access Controls
CWE-393: Return of Wrong Status Code

CAPEC

References (17)

URL	Tag	Source
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=956421fbb74c3a6261903f3836c0740187cf038b	X_refsource_confirm
http://www.openwall.com/lists/oss-security/2015/04/02/1	Mailing List
http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html	X_refsource_confirm
http://www.securitytracker.com/id/1032413	Vdb Entry
https://github.com/torvalds/linux/commit/956421fbb74c3a6261903f3836c0740187cf038b	X_refsource_confirm

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00004.html	2023-11-07
http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00018.html	2023-11-07
http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00021.html	2023-11-07
http://rhn.redhat.com/errata/RHSA-2015-1137.html	2023-11-07
http://rhn.redhat.com/errata/RHSA-2015-1138.html	2023-11-07
http://rhn.redhat.com/errata/RHSA-2015-1221.html	2023-11-07
http://www.debian.org/security/2015/dsa-3237	2023-11-07
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.19.2	2023-11-07
http://www.ubuntu.com/usn/USN-2631-1	2023-11-07
http://www.ubuntu.com/usn/USN-2632-1	2023-11-07
https://bugzilla.redhat.com/show_bug.cgi?id=1208598	2015-07-14
https://access.redhat.com/security/cve/CVE-2015-2830	2015-07-14

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				7.0 Search vendor "Debian" for product "Debian Linux" and version "7.0"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				8.0 Search vendor "Debian" for product "Debian Linux" and version "8.0"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				<= 3.19.1 Search vendor "Linux" for product "Linux Kernel" and version " <= 3.19.1"		-		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				12.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "12.04"		lts		Affected