kernel: taskstats io infoleak
Published Jun 13, 2012
2.1
LOWCVSS 2.0
EPSS 0.35%
Description
kernel/taskstats.c in the Linux kernel before 3.1 allows local users to obtain sensitive I/O statistics by sending taskstats commands to a netlink socket, as demonstrated by discovering the length of another user's password.
Affected products
No data.
- ≤ 3.0.34
- 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
No data.
Red Hat Enterprise Linux 5
kernel-0:2.6.18-274.12.1.el5
Fixed · RHSA-2011:1479
Red Hat Enterprise Linux 6
kernel-0:2.6.32-131.21.1.el6
Fixed · RHSA-2011:1465
Red Hat Enterprise MRG 2
kernel-rt-0:2.6.33.9-rt31.79.el6rt
Fixed · RHSA-2012:0010
Red Hat Enterprise Linux 4
kernel
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | kernel-0:2.6.18-274.12.1.el5 | Fixed | RHSA-2011:1479 |
| Red Hat Enterprise Linux 6 | kernel-0:2.6.32-131.21.1.el6 | Fixed | RHSA-2011:1465 |
| Red Hat Enterprise MRG 2 | kernel-rt-0:2.6.33.9-rt31.79.el6rt | Fixed | RHSA-2012:0010 |
| Red Hat Enterprise Linux 4 | kernel | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue did not affect the versions of Linux kernel as shipped with Red Hat Enterprise Linux 4 as it did not provide support for the Taskstats interface. This has been addressed in Red Hat Enterprise Linux 5, 6 and Red Hat Enterprise MRG via https://rhn.redhat.com/errata/RHSA-2011-1479.html, https://rhn.redhat.com/errata/RHSA-2011-1465.html, and https://rhn.redhat.com/errata/RHSA-2012-0010.html.
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:L/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 (11 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.35% (0.00354) | 26.67th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.36% (0.00357) | 27.30th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.09% (0.00092) | 24.00th | 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 | 1.03% (0.01034) | 41.69th | v2 (v2022.01.01) |
| Feb 13, 2023 | 1.03% (0.01034) | 41.16th | v2 (v2022.01.01) |
| Feb 3, 2023 | 1.28% (0.01282) | 67.60th | v2 (v2022.01.01) |
| Sep 10, 2022 | 1.03% (0.01034) | 39.91th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.03% (0.01034) | 37.91th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.03% (0.01034) | 20.32th | v2 (v2022.01.01) |
References (10)
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=1a51410abe7d0ee4b1d112780f46df87d3621043 x_refsource_CONFIRM
- http://lists.opensuse.org/opensuse-security-announce/2012-04/msg00021.html vendor-advisoryx_refsource_SUSE
- http://secunia.com/advisories/48898 third-party-advisoryx_refsource_SECUNIA
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.1 x_refsource_CONFIRM
- http://www.openwall.com/lists/oss-security/2011/06/27/1 mailing-listx_refsource_MLIST
- https://access.redhat.com/security/cve/CVE-2011-2494 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=716842 x_refsource_CONFIRMIssue Tracking
- https://github.com/torvalds/linux/commit/1a51410abe7d0ee4b1d112780f46df87d3621043 x_refsource_CONFIRMPatch
- https://nvd.nist.gov/vuln/detail/CVE-2011-2494
- https://www.cve.org/CVERecord?id=CVE-2011-2494
| Link | Providers | Tags |
|---|---|---|
| http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=1a51410abe7d0ee4b1d112780f46df87d3621043 | x_refsource_CONFIRM | |
| http://lists.opensuse.org/opensuse-security-announce/2012-04/msg00021.html | vendor-advisoryx_refsource_SUSE | |
| http://secunia.com/advisories/48898 | third-party-advisoryx_refsource_SECUNIA | |
| http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.1 | x_refsource_CONFIRM | |
| http://www.openwall.com/lists/oss-security/2011/06/27/1 | mailing-listx_refsource_MLIST | |
| https://access.redhat.com/security/cve/CVE-2011-2494 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=716842 | x_refsource_CONFIRMIssue Tracking | |
| https://github.com/torvalds/linux/commit/1a51410abe7d0ee4b1d112780f46df87d3621043 | x_refsource_CONFIRMPatch | |
| https://nvd.nist.gov/vuln/detail/CVE-2011-2494 | ||
| https://www.cve.org/CVERecord?id=CVE-2011-2494 |
Change history (0)
No recorded changes yet.