CVE-2012-2136
high
CVSS v3
—
CVSS v2
7.2
VIR risk
7.2
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.
Predictions
Exploit likelihood
20%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2012-2136
Vendor advisory: secalert@redhat.com — https://github.com/torvalds/linux/commit/cc9b17ad29ecaa20bfe426a8d4dbfb94b13ff1cc
Vendor advisory: secalert@redhat.com — http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.4.5
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| linux-kernel | affected | 3.0.37 | |
| debian | bookworm | fixed | 3.2.20-1 |
| debian | bullseye | fixed | 3.2.20-1 |
| debian | forky | fixed | 3.2.20-1 |
| debian | sid | fixed | 3.2.20-1 |
| debian | trixie | fixed | 3.2.20-1 |
References
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=cc9b17ad29ecaa20bfe426a8d4dbfb94b13ff1cc
- http://rhn.redhat.com/errata/RHSA-2012-0743.html
- http://rhn.redhat.com/errata/RHSA-2012-1087.html
- http://secunia.com/advisories/50807
- http://ubuntu.com/usn/usn-1529-1
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.4.5
- http://www.securityfocus.com/bid/53721
- http://www.ubuntu.com/usn/USN-1535-1
- https://bugzilla.redhat.com/show_bug.cgi?id=816289
- https://github.com/torvalds/linux/commit/cc9b17ad29ecaa20bfe426a8d4dbfb94b13ff1cc
- https://security-tracker.debian.org/tracker/CVE-2012-2136
CWEs
CWE-20
Verify integrity in audit chain (admin only). AS-IS.