CVE-2011-4086
The journal_unmap_buffer function in fs/jbd2/transaction.c in the Linux kernel before 3.3.1 does not properly handle the _Delay and _Unwritten buffer head states, which allows local users to cause a denial of service (system crash) by leveraging the…
Does this matter?
Lower severity and a low EPSS score (0.39%). Track it; it rarely justifies an emergency change on its own.
Description
The journal_unmap_buffer function in fs/jbd2/transaction.c in the Linux kernel before 3.3.1 does not properly handle the _Delay and _Unwritten buffer head states, which allows local users to cause a denial of service (system crash) by leveraging the presence of an ext4 filesystem that was mounted with a journal.
- CVSS 2.0
- 4.9 MEDIUMAV:L/AC:L/Au:N/C:N/I:N/A:C
- EPSS
- 0.39% probability · 33th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-119
- Affected
- linux/linux kernel
- Source
- secalert@redhat.com
References
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=15291164b22a357cb211b618adfef4fa82fc0de3
- http://lists.opensuse.org/opensuse-security-announce/2012-04/msg00021.html
- http://lists.opensuse.org/opensuse-security-announce/2012-05/msg00013.html
- http://rhn.redhat.com/errata/RHSA-2012-0571.html
- http://rhn.redhat.com/errata/RHSA-2012-0670.html
- http://secunia.com/advisories/48898
- http://secunia.com/advisories/48964
- http://www.debian.org/security/2012/dsa-2469
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.3.1
- https://bugzilla.redhat.com/show_bug.cgi?id=749143
- https://github.com/torvalds/linux/commit/15291164b22a357cb211b618adfef4fa82fc0de3Patch
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=15291164b22a357cb211b618adfef4fa82fc0de3
- http://lists.opensuse.org/opensuse-security-announce/2012-04/msg00021.html
- http://lists.opensuse.org/opensuse-security-announce/2012-05/msg00013.html
- http://rhn.redhat.com/errata/RHSA-2012-0571.html
- http://rhn.redhat.com/errata/RHSA-2012-0670.html
- http://secunia.com/advisories/48898
- http://secunia.com/advisories/48964
- http://www.debian.org/security/2012/dsa-2469
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.3.1
- https://bugzilla.redhat.com/show_bug.cgi?id=749143
- https://github.com/torvalds/linux/commit/15291164b22a357cb211b618adfef4fa82fc0de3Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.