kernel: use after free bug in "quota" handling
Published Jul 3, 2012
4.0
MEDIUMCVSS 2.0
EPSS 0.34%
Description
Use-after-free vulnerability in the Linux kernel before 3.3.6, when huge pages are enabled, allows local users to cause a denial of service (system crash) or possibly gain privileges by interacting with a hugetlbfs filesystem, as demonstrated by a umount operation that triggers improper handling of quota data.
Affected products
No data.
- ≤ 3.3.5
- 3.3
- 3.3.1
- 3.3.2
- 3.3.3
- 3.3.4
No data.
Red Hat Enterprise Linux 6
kernel-0:2.6.32-279.14.1.el6
Fixed · RHSA-2012:1426
Red Hat Enterprise Linux 6.2 EUS - Server and Compute Node Only
kernel-0:2.6.32-220.34.1.el6
Fixed · RHSA-2013:0741
Red Hat Enterprise MRG 2
kernel-rt-0:3.2.33-rt50.66.el6rt
Fixed · RHSA-2012:1491
Red Hat Enterprise Linux 4
kernel
Not affected
Red Hat Enterprise Linux 5
kernel
Not affected
Red Hat Enterprise MRG 1
kernel
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 6 | kernel-0:2.6.32-279.14.1.el6 | Fixed | RHSA-2012:1426 |
| Red Hat Enterprise Linux 6.2 EUS - Server and Compute Node Only | kernel-0:2.6.32-220.34.1.el6 | Fixed | RHSA-2013:0741 |
| Red Hat Enterprise MRG 2 | kernel-rt-0:3.2.33-rt50.66.el6rt | Fixed | RHSA-2012:1491 |
| Red Hat Enterprise Linux 4 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 5 | kernel | Not affected | n/a |
| Red Hat Enterprise MRG 1 | kernel | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue did not affect the versions of the Linux kernel as shipped with Red Hat Enterprise Linux 5. Future kernel updates for Red Hat Enterprise Linux 6 and Red Hat Enterprise Linux MRG 2 may address this issue.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:L/AC:H/Au:N/C:N/I:N/A:C
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.34% (0.00345) | 25.69th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.34% (0.00345) | 26.19th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.06% (0.00059) | 15.69th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.04% (0.00042) | 5.07th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00042) | 5.63th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.28% (0.01282) | 68.34th | v2 (v2022.01.01) |
| Feb 13, 2023 | 1.28% (0.01282) | 67.79th | v2 (v2022.01.01) |
| Feb 3, 2023 | 1.55% (0.01547) | 74.40th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.28% (0.01282) | 65.91th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.28% (0.01282) | 41.72th | v2 (v2022.01.01) |
References (12)
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=90481622d75715bfcb68501280a917dbfe516029 x_refsource_CONFIRM
- http://lists.opensuse.org/opensuse-security-announce/2012-05/msg00013.html vendor-advisoryx_refsource_SUSE
- http://www.debian.org/security/2012/dsa-2469 vendor-advisoryx_refsource_DEBIAN
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.3.6 x_refsource_CONFIRM
- http://www.openwall.com/lists/oss-security/2012/04/24/12 mailing-listx_refsource_MLIST
- http://www.securityfocus.com/bid/53233 vdb-entryx_refsource_BID
- https://access.redhat.com/security/cve/CVE-2012-2133 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=817430 x_refsource_CONFIRMIssue Tracking
- https://exchange.xforce.ibmcloud.com/vulnerabilities/75168 vdb-entryx_refsource_XF
- https://github.com/torvalds/linux/commit/90481622d75715bfcb68501280a917dbfe516029 x_refsource_CONFIRM
- https://nvd.nist.gov/vuln/detail/CVE-2012-2133
- https://www.cve.org/CVERecord?id=CVE-2012-2133
Change history (0)
No recorded changes yet.