CVE-2011-4086
CVE-2011-4086 is a medium-severity vulnerability in Linux Linux Kernel with a CVSS 2.0 base score of 4.9. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-119.
Key facts
- Severity: Medium (CVSS 2.0 base score 4.9)
- EPSS exploit prediction: 0% (31st percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-119
- Affected product: Linux Linux Kernel
- Published:
- Last modified:
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.
Frequently asked questions
- What is 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 presence of an ext4 filesystem that was mounted with a journal.
- How severe is CVE-2011-4086?
- CVE-2011-4086 has a CVSS 2.0 base score of 4.9, rated medium severity.
- Is CVE-2011-4086 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (31st percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2011-4086?
- CVE-2011-4086 primarily affects Linux Linux Kernel. In total, 84 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2011-4086?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2011-4086 published?
- CVE-2011-4086 was published on 2012-07-03 and last updated on 2026-06-16.
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/15291164b22a357cb211b618adfef4fa82fc0de3
Affected products (84)
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:3.0:rc1:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:3.0:rc2:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:3.0:rc3:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:3.0:rc4:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:3.0:rc5:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:3.0:rc6:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:3.0:rc7:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:3.0.1:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:3.0.2:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:3.0.3:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:3.0.4:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:3.0.5:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:3.0.6:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:3.0.7:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:3.0.8:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:3.0.9:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:3.0.10:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:3.0.11:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:3.0.12:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:3.0.13:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:3.0.14:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:3.0.15:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:3.0.16:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:3.0.17:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:3.0.18:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:3.0.19:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:3.0.20:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:3.0.21:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:3.0.22:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:3.0.23:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:3.0.24:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:3.0.25:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:3.0.26:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:3.0.27:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:3.0.28:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:3.0.29:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:3.0.30:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:3.0.31:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:3.0.32:*:*:*:*:*:*:*
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