kernel: null ptr deref at dev_queue_xmit+0x35/0x4d0
Published May 17, 2012
5.5
MEDIUMCVSS 3.1
EPSS 0.47%
Description
The net subsystem in the Linux kernel before 3.1 does not properly restrict use of the IFF_TX_SKB_SHARING flag, which allows local users to cause a denial of service (panic) by leveraging the CAP_NET_ADMIN capability to access /proc/net/pktgen/pgctrl, and then using the pktgen package in conjunction with a bridge device for a VLAN interface.
Affected products
No data.
Configuration 1
- < 3.1
Configuration 2
- ≥ 6.0 · ≤ 6.6.0
Configuration 3
- ≥ 6.0 · ≤ 6.6.0
Configuration 4
- ≥ 6.0 · ≤ 6.6.0
Configuration 5
- ≥ 6.0 · ≤ 6.6.0
Configuration 6
- ≥ 6.0 · ≤ 6.6.0
Configuration 7
- ≥ 6.0 · ≤ 6.6.0
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
Red Hat Security Response team does not consider this bug to be security relevant one due to the privileges required to exploit this issue.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
No CVSS v3.0 score for this CVE.
AV:L/AC:L/Au:N/C:N/I:N/A:C
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 | 0.47% (0.00468) | 38.24th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.47% (0.00468) | 36.70th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.05% (0.00047) | 11.69th | 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) |
| 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) |
No CWE recorded.
References (9)
- http://downloads.avaya.com/css/P8/documents/100156038 x_refsource_CONFIRMThird Party Advisory
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=550fd08c2cebad61c548def135f67aba284c6162 x_refsource_CONFIRM
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.1 x_refsource_CONFIRMMailing ListPatchVendor Advisory
- http://www.openwall.com/lists/oss-security/2011/11/21/4 mailing-listx_refsource_MLISTMailing ListPatchThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2011-4112 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=751006 x_refsource_CONFIRMExploitIssue TrackingPatchThird Party Advisory
- https://github.com/torvalds/linux/commit/550fd08c2cebad61c548def135f67aba284c6162 x_refsource_CONFIRMPatchThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2011-4112
- https://www.cve.org/CVERecord?id=CVE-2011-4112
| Link | Providers | Tags |
|---|---|---|
| http://downloads.avaya.com/css/P8/documents/100156038 | x_refsource_CONFIRMThird Party Advisory | |
| http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=550fd08c2cebad61c548def135f67aba284c6162 | x_refsource_CONFIRM | |
| http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.1 | x_refsource_CONFIRMMailing ListPatchVendor Advisory | |
| http://www.openwall.com/lists/oss-security/2011/11/21/4 | mailing-listx_refsource_MLISTMailing ListPatchThird Party Advisory | |
| https://access.redhat.com/security/cve/CVE-2011-4112 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=751006 | x_refsource_CONFIRMExploitIssue TrackingPatchThird Party Advisory | |
| https://github.com/torvalds/linux/commit/550fd08c2cebad61c548def135f67aba284c6162 | x_refsource_CONFIRMPatchThird Party Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2011-4112 | ||
| https://www.cve.org/CVERecord?id=CVE-2011-4112 |
Change history (0)
No recorded changes yet.