kernel: ext4: AIO vs fallocate stale data exposure
Published Dec 21, 2012
1.9
LOWCVSS 2.0
EPSS 0.29%
Description
Race condition in fs/ext4/extents.c in the Linux kernel before 3.4.16 allows local users to obtain sensitive information from a deleted file by reading an extent that was not properly marked as uninitialized.
Affected products
No data.
- ≤ 3.4.15
- 3.0
- 3.0
- 3.0
- 3.0
- 3.0
- 3.0
- 3.0
- 3.0.1
- 3.0.2
- 3.0.3
- 3.0.4
- 3.0.5
- 3.0.6
- 3.0.7
- 3.0.8
- 3.0.9
- 3.0.10
- 3.0.11
- 3.0.12
- 3.0.13
- 3.0.14
- 3.0.15
- 3.0.16
- 3.0.17
- 3.0.18
- 3.0.19
- 3.0.20
- 3.0.21
- 3.0.22
- 3.0.23
- 3.0.24
- 3.0.25
- 3.0.26
- 3.0.27
- 3.0.28
- 3.0.29
- 3.0.30
- 3.0.31
- 3.0.32
- 3.0.33
- 3.0.34
- 3.0.35
- 3.0.36
- 3.0.37
- 3.0.38
- 3.0.39
- 3.0.40
- 3.0.41
- 3.0.42
- 3.0.43
- 3.0.44
- 3.1
- 3.1
- 3.1
- 3.1
- 3.1
- 3.1.1
- 3.1.2
- 3.1.3
- 3.1.4
- 3.1.5
- 3.1.6
- 3.1.7
- 3.1.8
- 3.1.9
- 3.1.10
- 3.2
- 3.2
- 3.2
- 3.2
- 3.2
- 3.2
- 3.2
- 3.2
- 3.2.1
- 3.2.1
- 3.2.2
- 3.2.3
- 3.2.4
- 3.2.5
- 3.2.6
- 3.2.7
- 3.2.8
- 3.2.9
- 3.2.10
- 3.2.11
- 3.2.12
- 3.2.13
- 3.2.14
- 3.2.15
- 3.2.16
- 3.2.17
- 3.2.18
- 3.2.19
- 3.2.20
- 3.2.21
- 3.2.22
- 3.2.23
- 3.2.24
- 3.2.25
- 3.2.26
- 3.2.27
- 3.2.28
- 3.2.29
- 3.2.30
- 3.3
- 3.3
- 3.3
- 3.3
- 3.3
- 3.3
- 3.3
- 3.3
- 3.3.1
- 3.3.2
- 3.3.3
- 3.3.4
- 3.3.5
- 3.3.6
- 3.3.7
- 3.3.8
- 3.4
- 3.4
- 3.4
- 3.4
- 3.4
- 3.4
- 3.4
- 3.4
- 3.4
- 3.4
- 3.4
- 3.4
- 3.4
- 3.4
- 3.4
- 3.4
- 3.4.1
- 3.4.1
- 3.4.2
- 3.4.2
- 3.4.3
- 3.4.3
- 3.4.4
- 3.4.4
- 3.4.5
- 3.4.5
- 3.4.10
- 3.4.11
- 3.4.12
- 3.4.13
- 3.4.14
No data.
Red Hat Enterprise Linux 5
kernel-0:2.6.18-308.24.1.el5
Fixed · RHSA-2012:1540
Red Hat Enterprise Linux 6
kernel-0:2.6.32-358.el6
Fixed · RHSA-2013:0496
Red Hat Enterprise Linux 6.2 EUS - Server and Compute Node Only
kernel-0:2.6.32-220.45.1.el6
Fixed · RHSA-2013:1519
Red Hat Enterprise Linux 6.3 EUS - Server and Compute Node Only
kernel-0:2.6.32-279.39.1.el6
Fixed · RHSA-2013:1783
Red Hat Enterprise MRG 2
kernel-rt-0:3.2.33-rt50.66.el6rt
Fixed · RHSA-2012:1491
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | kernel-0:2.6.18-308.24.1.el5 | Fixed | RHSA-2012:1540 |
| Red Hat Enterprise Linux 6 | kernel-0:2.6.32-358.el6 | Fixed | RHSA-2013:0496 |
| Red Hat Enterprise Linux 6.2 EUS - Server and Compute Node Only | kernel-0:2.6.32-220.45.1.el6 | Fixed | RHSA-2013:1519 |
| Red Hat Enterprise Linux 6.3 EUS - Server and Compute Node Only | kernel-0:2.6.32-279.39.1.el6 | Fixed | RHSA-2013:1783 |
| Red Hat Enterprise MRG 2 | kernel-rt-0:3.2.33-rt50.66.el6rt | Fixed | RHSA-2012:1491 |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
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:M/Au:N/C:P/I:N/A:N
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 | 0.29% (0.00285) | 18.95th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.29% (0.00285) | 19.96th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.06% (0.00058) | 15.24th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.04% (0.00044) | 11.89th | v3 (v2023.03.01) |
| Jul 2, 2024 | 0.04% (0.00044) | 10.25th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00044) | 8.24th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.55% (0.01547) | 74.98th | v2 (v2022.01.01) |
| Feb 23, 2023 | 1.55% (0.01547) | 74.94th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.55% (0.01547) | 72.92th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.55% (0.01547) | 51.82th | v2 (v2022.01.01) |
References (17)
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=dee1f973ca341c266229faa5a1a5bb268bed3531 x_refsource_CONFIRM
- http://lists.fedoraproject.org/pipermail/package-announce/2012-November/091110.html vendor-advisoryx_refsource_FEDORA
- http://rhn.redhat.com/errata/RHSA-2012-1540.html vendor-advisoryx_refsource_REDHAT
- http://rhn.redhat.com/errata/RHSA-2013-0496.html vendor-advisoryx_refsource_REDHAT
- http://rhn.redhat.com/errata/RHSA-2013-1519.html vendor-advisoryx_refsource_REDHAT
- http://rhn.redhat.com/errata/RHSA-2013-1783.html vendor-advisoryx_refsource_REDHAT
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.4.16 x_refsource_CONFIRM
- http://www.openwall.com/lists/oss-security/2012/10/25/1 mailing-listx_refsource_MLIST
- http://www.ubuntu.com/usn/USN-1645-1 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-1899-1 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-1900-1 vendor-advisoryx_refsource_UBUNTU
- https://access.redhat.com/security/cve/CVE-2012-4508 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=869904 x_refsource_CONFIRMIssue Tracking
- https://github.com/torvalds/linux/commit/dee1f973ca341c266229faa5a1a5bb268bed3531 x_refsource_CONFIRMPatch
- https://nvd.nist.gov/vuln/detail/CVE-2012-4508
- https://www.cve.org/CVERecord?id=CVE-2012-4508
- https://www.suse.com/support/update/announcement/2012/suse-su-20121679-1.html vendor-advisoryx_refsource_SUSE
Change history (0)
No recorded changes yet.