Kernel: llc: Fix missing msg_namelen update in llc_ui_recvmsg
Published Apr 22, 2013
4.7
MEDIUMCVSS 2.0
EPSS 0.36%
Description
The llc_ui_recvmsg function in net/llc/af_llc.c in the Linux kernel before 3.9-rc7 does not initialize a certain length variable, which allows local users to obtain sensitive information from kernel stack memory via a crafted recvmsg or recvfrom system call.
Affected products
No data.
- ≤ 3.9
- 3.9
- 3.9
- 3.9
- 3.9
- 3.9
No data.
Red Hat Enterprise Linux 5
kernel-0:2.6.18-348.12.1.el5
Fixed · RHSA-2013:1034
Red Hat Enterprise Linux 6
kernel-0:2.6.32-431.el6
Fixed · RHSA-2013:1645
Red Hat Enterprise MRG 2
kernel-rt-0:3.6.11.2-rt33.39.el6rt
Fixed · RHSA-2013:0829
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | kernel-0:2.6.18-348.12.1.el5 | Fixed | RHSA-2013:1034 |
| Red Hat Enterprise Linux 6 | kernel-0:2.6.32-431.el6 | Fixed | RHSA-2013:1645 |
| Red Hat Enterprise MRG 2 | kernel-rt-0:3.6.11.2-rt33.39.el6rt | Fixed | RHSA-2013:0829 |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue affects the versions of the Linux kernel as shipped with Red Hat Enterprise Linux 5, 6 and Red Hat Enterprise MRG 2. Future kernel updates for Red Hat Enterprise Linux 5, 6 and Red Hat Enterprise 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:M/Au:N/C:C/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 (9 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.36% (0.00361) | 27.53th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.36% (0.00361) | 27.73th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.08% (0.00077) | 20.46th | 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 22, 2023 | 1.28% (0.01282) | 68.05th | 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 (16)
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=c77a4b9cffb6215a15196ec499490d116dfad181 x_refsource_CONFIRM
- http://lists.fedoraproject.org/pipermail/package-announce/2013-April/103750.html vendor-advisoryx_refsource_FEDORA
- http://lists.fedoraproject.org/pipermail/package-announce/2013-May/104480.html vendor-advisoryx_refsource_FEDORA
- http://lists.opensuse.org/opensuse-security-announce/2013-07/msg00016.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2013-07/msg00018.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-updates/2013-12/msg00129.html vendor-advisoryx_refsource_SUSE
- http://rhn.redhat.com/errata/RHSA-2013-1645.html vendor-advisoryx_refsource_REDHAT
- http://www.mandriva.com/security/advisories?name=MDVSA-2013:176 vendor-advisoryx_refsource_MANDRIVA
- http://www.openwall.com/lists/oss-security/2013/04/14/3 mailing-listx_refsource_MLIST
- http://www.ubuntu.com/usn/USN-1837-1 vendor-advisoryx_refsource_UBUNTU
- https://access.redhat.com/security/cve/CVE-2013-3231 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=956094 Issue Tracking
- https://github.com/torvalds/linux/commit/c77a4b9cffb6215a15196ec499490d116dfad181 x_refsource_CONFIRMVendor Advisory
- https://lkml.org/lkml/2013/4/14/107 mailing-listx_refsource_MLISTVendor Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2013-3231
- https://www.cve.org/CVERecord?id=CVE-2013-3231
Change history (0)
No recorded changes yet.