kernel: af_netlink: invalid handling of SCM_CREDENTIALS passing
Published Oct 3, 2012
1.9
LOWCVSS 2.0
EPSS 0.43%
Description
The Netlink implementation in the Linux kernel before 3.2.30 does not properly handle messages that lack SCM_CREDENTIALS data, which might allow local users to spoof Netlink communication via a crafted message, as demonstrated by a message to (1) Avahi or (2) NetworkManager.
Affected products
No data.
- ≤ 3.2.29
- 2.3.2
- 2.3.20
- 2.3.21
- 2.3.22
- 2.3.23
- 2.3.24
- 2.3.25
- 2.3.26
- 2.3.27
- 2.3.28
- 2.3.29
- 2.4.33.2
- 2.6.13.2
- 2.6.23.2
- 2.6.33.2
- 2.6.33.20
- 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
- 3.3.2
No data.
Red Hat Enterprise MRG 2
kernel-rt-0:3.2.33-rt50.66.el6rt
Fixed · RHSA-2012:1491
Red Hat Enterprise Linux 5
kernel
Not affected
Red Hat Enterprise Linux 6
kernel
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise MRG 2 | kernel-rt-0:3.2.33-rt50.66.el6rt | Fixed | RHSA-2012:1491 |
| Red Hat Enterprise Linux 5 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 6 | 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 and 6 as they did not backport the commit that introduced this issue. Future kernel updates for 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:N/I:P/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 | 0.43% (0.00429) | 34.77th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.43% (0.00429) | 33.99th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.06% (0.00062) | 16.68th | 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 (15)
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=e0e3cea46d31d23dc40df0a49a7a2c04fe8edfea x_refsource_CONFIRM
- http://lists.opensuse.org/opensuse-security-announce/2012-10/msg00005.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-updates/2013-02/msg00018.html vendor-advisoryx_refsource_SUSE
- http://secunia.com/advisories/50848 third-party-advisoryx_refsource_SECUNIA
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.2.30 x_refsource_CONFIRM
- http://www.openwall.com/lists/oss-security/2012/08/22/1 mailing-listx_refsource_MLIST
- http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html x_refsource_CONFIRM
- http://www.securityfocus.com/bid/55152 vdb-entryx_refsource_BID
- http://www.ubuntu.com/usn/USN-1599-1 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-1610-1 vendor-advisoryx_refsource_UBUNTU
- https://access.redhat.com/security/cve/CVE-2012-3520 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=850449 x_refsource_CONFIRMIssue Tracking
- https://github.com/torvalds/linux/commit/e0e3cea46d31d23dc40df0a49a7a2c04fe8edfea x_refsource_CONFIRMExploit
- https://nvd.nist.gov/vuln/detail/CVE-2012-3520
- https://www.cve.org/CVERecord?id=CVE-2012-3520
Change history (0)
No recorded changes yet.