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osvGoogleOSV:DSA-2389-1
HistoryJan 15, 2012 - 12:00 a.m.

linux-2.6 - several

2012-01-1500:00:00
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osv.dev
13

5.5 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

6.9 Medium

CVSS2

Access Vector

LOCAL

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:L/AC:M/Au:N/C:C/I:C/A:C

0.024 Low

EPSS

Percentile

88.3%

Several vulnerabilities have been discovered in the Linux kernel that may lead
to a denial of service or privilege escalation. The Common Vulnerabilities and
Exposures project identifies the following problems:

  • CVE-2011-2183
    Andrea Righi reported an issue in KSM, a memory-saving de-duplication
    feature. By exploiting a race with exiting tasks, local users can cause
    a kernel oops, resulting in a denial of service.
  • CVE-2011-2213
    Dan Rosenberg discovered an issue in the INET socket monitoring interface.
    Local users could cause a denial of service by injecting code and causing
    the kernel to execute an infinite loop.
  • CVE-2011-2898
    Eric Dumazet reported an information leak in the raw packet socket
    implementation.
  • CVE-2011-3353
    Han-Wen Nienhuys reported a local denial of service issue in the FUSE
    (Filesystem in Userspace) support in the Linux kernel. Local users could
    cause a buffer overflow, leading to a kernel oops and resulting in a denial
    of service.
  • CVE-2011-4077
    Carlos Maiolino reported an issue in the XFS filesystem. A local user
    with the ability to mount a filesystem could corrupt memory resulting
    in a denial of service or possibly gain elevated privileges.
  • CVE-2011-4110
    David Howells reported an issue in the kernel’s access key retention
    system which allow local users to cause a kernel oops leading to a denial
    of service.
  • CVE-2011-4127
    Paolo Bonzini of Red Hat reported an issue in the ioctl passthrough
    support for SCSI devices. Users with permission to access restricted
    portions of a device (e.g. a partition or a logical volume) can obtain
    access to the entire device by way of the SG_IO ioctl. This could be
    exploited by a local user or privileged VM guest to achieve a privilege
    escalation.
  • CVE-2011-4611
    Maynard Johnson reported an issue with the perf support on POWER7 systems
    that allows local users to cause a denial of service.
  • CVE-2011-4622
    Jan Kiszka reported an issue in the KVM PIT timer support. Local users
    with the permission to use KVM can cause a denial of service by starting
    a PIT timer without first setting up the irqchip.
  • CVE-2011-4914
    Ben Hutchings reported various bounds checking issues within the ROSE
    protocol support in the kernel. Remote users could possibly use this
    to gain access to sensitive memory or cause a denial of service.

For the stable distribution (squeeze), this problem has been fixed in version
2.6.32-39squeeze1. Updates for issues impacting the oldstable distribution
(lenny) will be available soon.

The following matrix lists additional source packages that were rebuilt for
compatibility with or to take advantage of this update:

Debian 6.0 (squeeze)
user-mode-linux 2.6.32-1um-4+39squeeze1

We recommend that you upgrade your linux-2.6 and user-mode-linux packages.

5.5 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

6.9 Medium

CVSS2

Access Vector

LOCAL

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:L/AC:M/Au:N/C:C/I:C/A:C

0.024 Low

EPSS

Percentile

88.3%

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