CVE-2010-4258

Description

The do_exit function in kernel/exit.c in the Linux kernel before 2.6.36.2 does not properly handle a KERNEL_DS get_fs value, which allows local users to bypass intended access_ok restrictions, overwrite arbitrary kernel memory locations, and gain privileges by leveraging a (1) BUG, (2) NULL pointer dereference, or (3) page fault, as demonstrated by vectors involving the clear_child_tid feature and the splice system call.

Category

6.2
CVSS
Severity: Medium
CVSS 2.0 •
EPSS 1.83% Top 20%
Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory fedoraproject.org Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory mandriva.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://openwall.com/lists/oss-security/2010/12/02/2 third party advisory mailing list
http://secunia.com/advisories/43056 third party advisory
http://lists.opensuse.org/opensuse-security-announce/2011-01/msg00004.html mailing list third party advisory vendor advisory
http://secunia.com/advisories/42778 third party advisory
http://openwall.com/lists/oss-security/2010/12/02/3 third party advisory mailing list
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=33dd94ae1ccbfb7bf0fb6c692bc3d1c4269e6177
http://secunia.com/advisories/42801 third party advisory
http://lists.opensuse.org/opensuse-security-announce/2011-01/msg00001.html mailing list third party advisory vendor advisory
http://blog.nelhage.com/2010/12/cve-2010-4258-from-dos-to-privesc/ third party advisory
http://openwall.com/lists/oss-security/2010/12/09/4 third party advisory mailing list
http://lists.fedoraproject.org/pipermail/package-announce/2010-December/052513.html third party advisory vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2011-01/msg00000.html mailing list third party advisory vendor advisory
http://secunia.com/advisories/42932 third party advisory
http://archives.neohapsis.com/archives/fulldisclosure/2010-12/0086.html mailing list broken link
http://www.vupen.com/english/advisories/2011/0124 vdb entry third party advisory
http://marc.info/?l=linux-kernel&m=129117048916957&w=2 mailing list third party advisory patch
http://lists.opensuse.org/opensuse-security-announce/2011-02/msg00000.html mailing list third party advisory vendor advisory
http://www.vupen.com/english/advisories/2010/3321 vdb entry third party advisory
http://openwall.com/lists/oss-security/2010/12/08/9 third party advisory mailing list
http://www.vupen.com/english/advisories/2011/0298 vdb entry third party advisory
http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.36.2 broken link
http://openwall.com/lists/oss-security/2010/12/09/14 third party advisory mailing list
http://lists.opensuse.org/opensuse-security-announce/2011-01/msg00007.html mailing list third party advisory vendor advisory
http://code.google.com/p/chromium-os/issues/detail?id=10234 third party advisory
http://www.vupen.com/english/advisories/2011/0375 vdb entry third party advisory
https://lkml.org/lkml/2010/12/1/543 mailing list third party advisory patch
http://googlechromereleases.blogspot.com/2011/01/chrome-os-beta-channel-update.html third party advisory
http://www.vupen.com/english/advisories/2011/0012 vdb entry third party advisory
http://lists.opensuse.org/opensuse-security-announce/2011-02/msg00002.html mailing list third party advisory vendor advisory
http://openwall.com/lists/oss-security/2010/12/02/4 third party advisory mailing list
http://www.mandriva.com/security/advisories?name=MDVSA-2011:029 third party advisory vendor advisory
http://secunia.com/advisories/42745 third party advisory
http://openwall.com/lists/oss-security/2010/12/02/7 third party advisory mailing list
http://openwall.com/lists/oss-security/2010/12/08/5 third party advisory mailing list
http://secunia.com/advisories/43291 third party advisory
http://www.vupen.com/english/advisories/2011/0213 vdb entry third party advisory
https://bugzilla.redhat.com/show_bug.cgi?id=659567 issue tracking third party advisory
http://openwall.com/lists/oss-security/2010/12/08/4 third party advisory mailing list

Frequently Asked Questions

What is the severity of CVE-2010-4258?
CVE-2010-4258 has been scored as a medium severity vulnerability.
How to fix CVE-2010-4258?
To fix CVE-2010-4258, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2010-4258 being actively exploited in the wild?
It is possible that CVE-2010-4258 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~2% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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