kernel: net: insufficient data_len validation in sock_alloc_send_pskb()
Published Aug 9, 2012
7.2
HIGHCVSS 2.0
EPSS 0.58%
Description
The sock_alloc_send_pskb function in net/core/sock.c in the Linux kernel before 3.4.5 does not properly validate a certain length value, which allows local users to cause a denial of service (heap-based buffer overflow and system crash) or possibly gain privileges by leveraging access to a TUN/TAP device.
Affected products
No data.
- < 3.0.37
- ≥ 3.1 · < 3.2.23
- ≥ 3.3 · < 3.4.5
No data.
Red Hat Enterprise Linux 5
kernel-0:2.6.18-308.8.1.el5
Fixed · RHSA-2012:0690
Red Hat Enterprise Linux 5.6 EUS - Server Only
kernel-0:2.6.18-238.40.1.el5
Fixed · RHSA-2012:1087
Red Hat Enterprise Linux 6
kernel-0:2.6.32-220.23.1.el6
Fixed · RHSA-2012:0743
Red Hat Enterprise MRG 2
realtime-kernel
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | kernel-0:2.6.18-308.8.1.el5 | Fixed | RHSA-2012:0690 |
| Red Hat Enterprise Linux 5.6 EUS - Server Only | kernel-0:2.6.18-238.40.1.el5 | Fixed | RHSA-2012:1087 |
| Red Hat Enterprise Linux 6 | kernel-0:2.6.32-220.23.1.el6 | Fixed | RHSA-2012:0743 |
| Red Hat Enterprise MRG 2 | realtime-kernel | Not affected | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
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:L/Au:N/C:C/I:C/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 (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.58% (0.00583) | 45.82th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.58% (0.00583) | 43.04th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.09% (0.00088) | 22.99th | 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 (13)
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=cc9b17ad29ecaa20bfe426a8d4dbfb94b13ff1cc x_refsource_CONFIRMBroken Link
- http://rhn.redhat.com/errata/RHSA-2012-0743.html vendor-advisoryx_refsource_REDHATThird Party AdvisoryVDB Entry
- http://rhn.redhat.com/errata/RHSA-2012-1087.html vendor-advisoryx_refsource_REDHATThird Party Advisory
- http://secunia.com/advisories/50807 third-party-advisoryx_refsource_SECUNIAURL Repurposed
- http://ubuntu.com/usn/usn-1529-1 vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.4.5 x_refsource_CONFIRMVendor Advisory
- http://www.securityfocus.com/bid/53721 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- http://www.ubuntu.com/usn/USN-1535-1 vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2012-2136 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=816289 x_refsource_CONFIRMIssue Tracking
- https://github.com/torvalds/linux/commit/cc9b17ad29ecaa20bfe426a8d4dbfb94b13ff1cc x_refsource_CONFIRMExploitPatch
- https://nvd.nist.gov/vuln/detail/CVE-2012-2136
- https://www.cve.org/CVERecord?id=CVE-2012-2136
Change history (0)
No recorded changes yet.