Kernel: llc: information leak via getsockname
Published Mar 14, 2013
1.9
LOWCVSS 2.0
EPSS 0.34%
Description
The llc_ui_getname function in net/llc/af_llc.c in the Linux kernel before 3.6 has an incorrect return value in certain circumstances, which allows local users to obtain sensitive information from kernel stack memory via a crafted application that leverages an uninitialized pointer argument.
Affected products
No data.
Configuration 1
- ≤ 3.5.7
- 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
- 3.0.45
- 3.0.46
- 3.0.47
- 3.0.48
- 3.0.49
- 3.0.50
- 3.0.51
- 3.0.52
- 3.0.53
- 3.0.54
- 3.0.55
- 3.0.56
- 3.0.57
- 3.0.58
- 3.0.59
- 3.0.60
- 3.0.61
- 3.0.62
- 3.0.63
- 3.0.64
- 3.0.65
- 3.0.66
- 3.0.67
- 3.0.68
- 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
- 3.2.1
- 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
- 3.4.1
- 3.4.2
- 3.4.3
- 3.4.4
- 3.4.5
- 3.4.6
- 3.4.7
- 3.4.8
- 3.4.9
- 3.4.10
- 3.4.11
- 3.4.12
- 3.4.13
- 3.4.14
- 3.4.15
- 3.4.16
- 3.4.17
- 3.4.18
- 3.4.19
- 3.4.20
- 3.4.21
- 3.4.22
- 3.4.23
- 3.4.24
- 3.4.25
- 3.4.26
- 3.4.27
- 3.4.28
- 3.4.29
- 3.4.30
- 3.4.31
- 3.4.32
- 3.5.1
- 3.5.2
- 3.5.3
- 3.5.4
- 3.5.5
- 3.5.6
Configuration 2
- 5
- 6.0
No data.
Red Hat Enterprise Linux 5
kernel-0:2.6.18-348.4.1.el5
Fixed · RHSA-2013:0747
Red Hat Enterprise Linux 6
kernel-0:2.6.32-431.el6
Fixed · RHSA-2013:1645
Red Hat Enterprise MRG 2
realtime-kernel
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | kernel-0:2.6.18-348.4.1.el5 | Fixed | RHSA-2013:0747 |
| Red Hat Enterprise Linux 6 | kernel-0:2.6.32-431.el6 | Fixed | RHSA-2013:1645 |
| Red Hat Enterprise MRG 2 | realtime-kernel | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue does not affect the versions of the kernel package as shipped with Red Hat Enterprise MRG 2. This issue affects the version of the Linux kernel as shipped with Red Hat Enterprise Linux 5 and Red Hat Enterprise Linux 6. Future kernel updates for Red Hat Enterprise Linux 6 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: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 | 0.34% (0.00341) | 25.18th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.35% (0.00354) | 27.08th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.08% (0.00084) | 22.23th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.09% (0.00088) | 39.32th | v3 (v2023.03.01) |
| Jun 26, 2024 | 0.09% (0.00088) | 37.99th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.09% (0.00088) | 35.96th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.11% (0.01108) | 55.18th | v2 (v2022.01.01) |
| Sep 17, 2022 | 1.11% (0.01108) | 53.57th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.11% (0.01108) | 51.54th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.11% (0.01108) | 29.61th | v2 (v2022.01.01) |
References (11)
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=3592aaeb80290bda0f2cf0b5456c97bfc638b192 x_refsource_CONFIRM
- http://rhn.redhat.com/errata/RHSA-2013-1645.html vendor-advisoryx_refsource_REDHAT
- http://www.openwall.com/lists/oss-security/2013/03/05/13 mailing-listx_refsource_MLIST
- http://www.ubuntu.com/usn/USN-1805-1 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-1808-1 vendor-advisoryx_refsource_UBUNTU
- https://access.redhat.com/security/cve/CVE-2012-6542 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=922322 Issue Tracking
- https://github.com/torvalds/linux/commit/3592aaeb80290bda0f2cf0b5456c97bfc638b192 x_refsource_CONFIRM
- https://nvd.nist.gov/vuln/detail/CVE-2012-6542
- https://www.cve.org/CVERecord?id=CVE-2012-6542
- https://www.kernel.org/pub/linux/kernel/v3.x/patch-3.6.bz2 x_refsource_CONFIRMPatch
| Link | Providers | Tags |
|---|---|---|
| http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=3592aaeb80290bda0f2cf0b5456c97bfc638b192 | x_refsource_CONFIRM | |
| http://rhn.redhat.com/errata/RHSA-2013-1645.html | vendor-advisoryx_refsource_REDHAT | |
| http://www.openwall.com/lists/oss-security/2013/03/05/13 | mailing-listx_refsource_MLIST | |
| http://www.ubuntu.com/usn/USN-1805-1 | vendor-advisoryx_refsource_UBUNTU | |
| http://www.ubuntu.com/usn/USN-1808-1 | vendor-advisoryx_refsource_UBUNTU | |
| https://access.redhat.com/security/cve/CVE-2012-6542 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=922322 | Issue Tracking | |
| https://github.com/torvalds/linux/commit/3592aaeb80290bda0f2cf0b5456c97bfc638b192 | x_refsource_CONFIRM | |
| https://nvd.nist.gov/vuln/detail/CVE-2012-6542 | ||
| https://www.cve.org/CVERecord?id=CVE-2012-6542 | ||
| https://www.kernel.org/pub/linux/kernel/v3.x/patch-3.6.bz2 | x_refsource_CONFIRMPatch |
Change history (0)
No recorded changes yet.