Overly broad permissions can turn one compromised account into a much larger security problem. Learn how to reduce unnecessary access, review privileges, and apply least privilege across modern Linux systems. Review Linux Privileges×

Alerts This Week
Warning Icon 1 521
Alerts This Week
Warning Icon 1 521

Ubuntu 11.04 USN-1212-1 Critical: Kernel Flaws Leading to Privacy Loss

ubuntu
Calendar Grey September 21, 2011
Scroller Ubuntu
Numerous significant vulnerabilities patched in Ubuntu 11.04 targeting OMAP4; concerns over data privacy and service disruption resolved.
Multiple kernel flaws have been fixed.

Summary

Multiple kernel flaws have been fixed.

Software Description:

- linux-ti-omap4: Linux kernel for OMAP4

Details:

Goldwyn Rodrigues discovered that the OCFS2 filesystem did not correctly

clear memory when writing certain file holes. A local attacker could

exploit this to read uninitialized data from the disk, leading to a loss of

privacy. (CVE-2011-0463)

Timo Warns discovered that the LDM disk partition handling code did not

correctly handle certain values. By inserting a specially crafted disk

device, a local attacker could exploit this to gain root privileges.

(CVE-2011-1017)

It was discovered that the /proc filesystem did not correctly handle

permission changes when programs executed. A local attacker could hold open

files to examine details about programs running with higher privileges,

potentially increasing the chances of exploiting additional

vulnerabilities. (CVE-2011-1020)

Vasiliy Kulikov discovered that the Bluetooth stack did not correctly clear

...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service system update kernel flaw ubuntu privacy loss

Update Instructions

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 11.04:
  linux-image-2.6.38-1209-omap4   2.6.38-1209.15

After a standard system update you need to reboot your computer to make
all the necessary changes.

References

CVE-2011-0463, CVE-2011-1017, CVE-2011-1020, CVE-2011-1078,

CVE-2011-1079, CVE-2011-1080, CVE-2011-1160, CVE-2011-1170,

CVE-2011-1171, CVE-2011-1172, CVE-2011-1173, CVE-2011-1180,

CVE-2011-1182, CVE-2011-1493, CVE-2011-1494, CVE-2011-1495,

CVE-2011-1577, CVE-2011-1581, CVE-2011-1593, CVE-2011-1598,

CVE-2011-1745, CVE-2011-1746, CVE-2011-1748, CVE-2011-1770,

CVE-2011-1771, CVE-2011-1833, CVE-2011-2022, CVE-2011-2484,

CVE-2011-2492, CVE-2011-2493, CVE-2011-2534, CVE-2011-2689,

CVE-2011-2699, CVE-2011-2918

Severity
critical
Lowest
Low
Medium
High
Critical

September 21, 2011

Topics%20covered

Topics Covered

security advisory denial of service system update kernel flaw ubuntu privacy loss

Package Information

https://launchpad.net/ubuntu/+source/linux-ti-omap4/2.6.38-1209.15

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.