low
1.9
CWE
362
Advisory Published
CVE Published
Updated

CVE-2012-4508: Race Condition

First published: Thu Oct 25 2012(Updated: )

A race condition flaw has been found in the way asynchronous I/O and fallocate interacted which can lead to exposure of stale data -- that is, an extent which should have had the "uninitialized" bit set indicating that its blocks have not yet been written and thus contain data from a deleted file. An unprivileged local user could use this flaw to cause an information leak. Acknowledgements: Red Hat would like to thank Theodore Ts'o for reporting this issue. Upstream acknowledges Dmitry Monakhov as the original reporter. References: <a href="http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=dee1f973ca341c266229faa5a1a5bb268bed3531">http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=dee1f973ca341c266229faa5a1a5bb268bed3531</a>

Credit: secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
debian/linux
5.10.223-1
5.10.226-1
6.1.123-1
6.1.128-1
6.12.12-1
6.12.16-1
Linux kernel<=3.4.15
Linux kernel=3.0-rc1
Linux kernel=3.0-rc2
Linux kernel=3.0-rc3
Linux kernel=3.0-rc4
Linux kernel=3.0-rc5
Linux kernel=3.0-rc6
Linux kernel=3.0-rc7
Linux kernel=3.0.1
Linux kernel=3.0.2
Linux kernel=3.0.3
Linux kernel=3.0.4
Linux kernel=3.0.5
Linux kernel=3.0.6
Linux kernel=3.0.7
Linux kernel=3.0.8
Linux kernel=3.0.9
Linux kernel=3.0.10
Linux kernel=3.0.11
Linux kernel=3.0.12
Linux kernel=3.0.13
Linux kernel=3.0.14
Linux kernel=3.0.15
Linux kernel=3.0.16
Linux kernel=3.0.17
Linux kernel=3.0.18
Linux kernel=3.0.19
Linux kernel=3.0.20
Linux kernel=3.0.21
Linux kernel=3.0.22
Linux kernel=3.0.23
Linux kernel=3.0.24
Linux kernel=3.0.25
Linux kernel=3.0.26
Linux kernel=3.0.27
Linux kernel=3.0.28
Linux kernel=3.0.29
Linux kernel=3.0.30
Linux kernel=3.0.31
Linux kernel=3.0.32
Linux kernel=3.0.33
Linux kernel=3.0.34
Linux kernel=3.0.35
Linux kernel=3.0.36
Linux kernel=3.0.37
Linux kernel=3.0.38
Linux kernel=3.0.39
Linux kernel=3.0.40
Linux kernel=3.0.41
Linux kernel=3.0.42
Linux kernel=3.0.43
Linux kernel=3.0.44
Linux kernel=3.1
Linux kernel=3.1-rc1
Linux kernel=3.1-rc2
Linux kernel=3.1-rc3
Linux kernel=3.1-rc4
Linux kernel=3.1.1
Linux kernel=3.1.2
Linux kernel=3.1.3
Linux kernel=3.1.4
Linux kernel=3.1.5
Linux kernel=3.1.6
Linux kernel=3.1.7
Linux kernel=3.1.8
Linux kernel=3.1.9
Linux kernel=3.1.10
Linux kernel=3.2
Linux kernel=3.2
Linux kernel=3.2-rc2
Linux kernel=3.2-rc3
Linux kernel=3.2-rc4
Linux kernel=3.2-rc5
Linux kernel=3.2-rc6
Linux kernel=3.2-rc7
Linux kernel=3.2.1
Linux kernel=3.2.1
Linux kernel=3.2.2
Linux kernel=3.2.3
Linux kernel=3.2.4
Linux kernel=3.2.5
Linux kernel=3.2.6
Linux kernel=3.2.7
Linux kernel=3.2.8
Linux kernel=3.2.9
Linux kernel=3.2.10
Linux kernel=3.2.11
Linux kernel=3.2.12
Linux kernel=3.2.13
Linux kernel=3.2.14
Linux kernel=3.2.15
Linux kernel=3.2.16
Linux kernel=3.2.17
Linux kernel=3.2.18
Linux kernel=3.2.19
Linux kernel=3.2.20
Linux kernel=3.2.21
Linux kernel=3.2.22
Linux kernel=3.2.23
Linux kernel=3.2.24
Linux kernel=3.2.25
Linux kernel=3.2.26
Linux kernel=3.2.27
Linux kernel=3.2.28
Linux kernel=3.2.29
Linux kernel=3.2.30
Linux kernel=3.3
Linux kernel=3.3-rc1
Linux kernel=3.3-rc2
Linux kernel=3.3-rc3
Linux kernel=3.3-rc4
Linux kernel=3.3-rc5
Linux kernel=3.3-rc6
Linux kernel=3.3-rc7
Linux kernel=3.3.1
Linux kernel=3.3.2
Linux kernel=3.3.3
Linux kernel=3.3.4
Linux kernel=3.3.5
Linux kernel=3.3.6
Linux kernel=3.3.7
Linux kernel=3.3.8
Linux kernel=3.4
Linux kernel=3.4
Linux kernel=3.4-rc1
Linux kernel=3.4-rc1
Linux kernel=3.4-rc2
Linux kernel=3.4-rc2
Linux kernel=3.4-rc3
Linux kernel=3.4-rc3
Linux kernel=3.4-rc4
Linux kernel=3.4-rc4
Linux kernel=3.4-rc5
Linux kernel=3.4-rc5
Linux kernel=3.4-rc6
Linux kernel=3.4-rc6
Linux kernel=3.4-rc7
Linux kernel=3.4-rc7
Linux kernel=3.4.1
Linux kernel=3.4.1
Linux kernel=3.4.2
Linux kernel=3.4.2
Linux kernel=3.4.3
Linux kernel=3.4.3
Linux kernel=3.4.4
Linux kernel=3.4.4
Linux kernel=3.4.5
Linux kernel=3.4.5
Linux kernel=3.4.10
Linux kernel=3.4.11
Linux kernel=3.4.12
Linux kernel=3.4.13
Linux kernel=3.4.14

Remedy

https://github.com/torvalds/linux/commit/dee1f973ca341c266229faa5a1a5bb268bed3531

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2012-4508?

    CVE-2012-4508 is classified as a medium severity vulnerability due to its potential to expose stale data.

  • How do I fix CVE-2012-4508?

    To fix CVE-2012-4508, update to a Linux kernel version 5.10.223-1 or newer, or 6.1.123-1 or newer.

  • What are the affected versions for CVE-2012-4508?

    CVE-2012-4508 affects Linux kernel versions up to 3.4.15 and specific release candidate versions of 3.0 and 3.1.

  • What type of vulnerability is CVE-2012-4508?

    CVE-2012-4508 is a race condition vulnerability involving asynchronous I/O and fallocate operations.

  • Can CVE-2012-4508 lead to data exposure?

    Yes, CVE-2012-4508 can lead to exposure of stale data from deleted files.

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