kernel: Information leak in the Linux ethernet bridge component
Published Mar 22, 2013
1.9
LOWCVSS 2.0
EPSS 0.36%
Description
net/bridge/br_mdb.c in the Linux kernel before 3.8.4 does not initialize certain structures, which allows local users to obtain sensitive information from kernel memory via a crafted application.
Affected products
No data.
- ≤ 3.8.3
- 3.8.0
- 3.8.1
- 3.8.2
No data.
Red Hat Enterprise Linux 5
kernel
Not affected
Red Hat Enterprise Linux 6
kernel
Not affected
Red Hat Enterprise MRG 2
realtime-kernel
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 6 | kernel | Not affected | n/a |
| Red Hat Enterprise MRG 2 | realtime-kernel | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
Not vulnerable. This issue did not affect the version of the kernel package as shipped with Red Hat Enterprise Linux 5, 6 and Red Hat Enterprise MRG 2.
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 2, 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 2, 2026 | 0.36% (0.00361) | 27.58th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.36% (0.00361) | 27.71th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.11% (0.00110) | 27.03th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.08% (0.00079) | 36.04th | v3 (v2023.03.01) |
| Mar 15, 2024 | 0.09% (0.00089) | 36.68th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.08% (0.00079) | 32.42th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.02% (0.01018) | 40.69th | v2 (v2022.01.01) |
| Sep 10, 2022 | 1.02% (0.01018) | 38.88th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.02% (0.01018) | 36.86th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.02% (0.01018) | 19.50th | v2 (v2022.01.01) |
References (9)
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=c085c49920b2f900ba716b4ca1c1a55ece9872cc x_refsource_CONFIRM
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.8.4 x_refsource_CONFIRM
- http://www.openwall.com/lists/oss-security/2013/03/20/1 mailing-listx_refsource_MLIST
- https://access.redhat.com/security/cve/CVE-2013-2636 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=923652 x_refsource_CONFIRM
- https://bugzilla.redhat.com/show_bug.cgi?id=924693 Issue Tracking
- https://github.com/torvalds/linux/commit/c085c49920b2f900ba716b4ca1c1a55ece9872cc x_refsource_CONFIRMPatch
- https://nvd.nist.gov/vuln/detail/CVE-2013-2636
- https://www.cve.org/CVERecord?id=CVE-2013-2636
| Link | Providers | Tags |
|---|---|---|
| http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=c085c49920b2f900ba716b4ca1c1a55ece9872cc | x_refsource_CONFIRM | |
| http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.8.4 | x_refsource_CONFIRM | |
| http://www.openwall.com/lists/oss-security/2013/03/20/1 | mailing-listx_refsource_MLIST | |
| https://access.redhat.com/security/cve/CVE-2013-2636 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=923652 | x_refsource_CONFIRM | |
| https://bugzilla.redhat.com/show_bug.cgi?id=924693 | Issue Tracking | |
| https://github.com/torvalds/linux/commit/c085c49920b2f900ba716b4ca1c1a55ece9872cc | x_refsource_CONFIRMPatch | |
| https://nvd.nist.gov/vuln/detail/CVE-2013-2636 | ||
| https://www.cve.org/CVERecord?id=CVE-2013-2636 |
Change history (0)
No recorded changes yet.