CVE-2013-2596
HighExploitedPublic exploitInteger overflow in the fb_mmap function in drivers/video/fbmem.c in the Linux kernel before 3.8.9, as used in a certain Motorola build of Android 4.1.2 and other products, allows local users to create a read-write memory mapping for the entirety of kernel memory, and…
Published Apr 13, 2013 · Updated Aug 4, 2026 · Also known as DEBIAN-CVE-2013-2596, UBUNTU-CVE-2013-2596
Key Facts
Patch immediately- CVE-2013-2596 is a high-severity vulnerability (CVSS 7.8 v3.1) affecting Linux Kernel, Android (Motorola), linux (debian) and 22 more products.
- It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Sep 15, 2022. Public exploit code is available.
- EPSS estimates a 3.2% probability of exploitation in the next 30 days.
- Fixed versions are available, including kernel 0:2.6.18-409.el5, kernel 0:2.6.32-431.53.2.el6, kernel 2.6.18-409.0.0.0.1.el5.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v3.1
7.8
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
3.2%
Higher than 87.9% of all scored CVEs
Exploited in the wild
Yes
4 catalog listings
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2013-2596 brief as a PDF
Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.
Description
Integer overflow in the fb_mmap function in drivers/video/fbmem.c in the Linux kernel before 3.8.9, as used in a certain Motorola build of Android 4.1.2 and other products, allows local users to create a read-write memory mapping for the entirety of kernel memory, and consequently gain privileges, via crafted /dev/graphics/fb0 mmap2 system calls, as demonstrated by the Motochopper pwn program.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| CISA KEV | Sep 15, 2022 | Oct 6, 2022 | Not reported |
| Industry KEV feed | Sep 15, 2022 | Oct 6, 2022 | Not reported |
| CIRCL KEV | Sep 15, 2022 | Oct 6, 2022 | Not reported |
| ENISA EUVD | Sep 15, 2022 | n/a | Not reported |
Required action: Apply updates per vendor instructions.
Affected Products
93 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Linux KernelLinux | See advisory | 3.0.75 |
| AndroidMotorola | 4.1.2 | n/a |
| linuxdebian | See advisory | 3.9-1 |
| rootio-linuxrootio | See advisory | 3.9-1 |
| linux-aws-5.0ubuntu | See advisory | n/a |
Patched Releases
kernel
0:2.6.18-409.el5, 0:2.6.32-431.53.2.el6, 2.6.18-409.0.0.0.1.el5, 2.6.18-409.el5, 2.6.32-504.el6
kernel-abi-whitelists
2.6.32-504.el6
kernel-debug
2.6.18-409.0.0.0.1.el5, 2.6.18-409.el5, 2.6.32-504.el6
kernel-debug-devel
2.6.18-409.0.0.0.1.el5, 2.6.18-409.el5, 2.6.32-504.el6
kernel-devel
2.6.18-409.0.0.0.1.el5, 2.6.18-409.el5, 2.6.32-504.el6
kernel-doc
2.6.18-409.0.0.0.1.el5, 2.6.18-409.el5, 2.6.32-504.el6
kernel-firmware
2.6.32-504.el6
kernel-headers
2.6.18-409.0.0.0.1.el5, 2.6.18-409.el5, 2.6.32-504.el6
kernel-PAE
2.6.18-409.0.0.0.1.el5, 2.6.18-409.el5
kernel-PAE-devel
2.6.18-409.0.0.0.1.el5, 2.6.18-409.el5
kernel-uek
2.6.32-400.36.9.el5uek, 2.6.32-400.36.9.el6uek, 2.6.39-400.215.11.el5uek, 2.6.39-400.215.11.el6uek
kernel-uek-debug
2.6.32-400.36.9.el5uek, 2.6.32-400.36.9.el6uek, 2.6.39-400.215.11.el5uek, 2.6.39-400.215.11.el6uek
kernel-uek-debug-devel
2.6.32-400.36.9.el5uek, 2.6.32-400.36.9.el6uek, 2.6.39-400.215.11.el5uek, 2.6.39-400.215.11.el6uek
kernel-uek-devel
2.6.32-400.36.9.el5uek, 2.6.32-400.36.9.el6uek, 2.6.39-400.215.11.el5uek, 2.6.39-400.215.11.el6uek
kernel-uek-doc
2.6.32-400.36.9.el5uek, 2.6.32-400.36.9.el6uek, 2.6.39-400.215.11.el5uek, 2.6.39-400.215.11.el6uek
kernel-uek-firmware
2.6.32-400.36.9.el5uek, 2.6.32-400.36.9.el6uek, 2.6.39-400.215.11.el5uek, 2.6.39-400.215.11.el6uek
kernel-uek-headers
2.6.32-400.36.9.el5uek, 2.6.32-400.36.9.el6uek
kernel-xen
2.6.18-409.0.0.0.1.el5, 2.6.18-409.el5
kernel-xen-devel
2.6.18-409.0.0.0.1.el5, 2.6.18-409.el5
linux
3.9-1
Linux Kernel
3.0.75
mlnx_en-2.6.32-400.36.9.el5uek
1.5.7-2
mlnx_en-2.6.32-400.36.9.el5uekdebug
1.5.7-2
mlnx_en-2.6.32-400.36.9.el6uek
1.5.7-0.1
mlnx_en-2.6.32-400.36.9.el6uekdebug
1.5.7-0.1
Timeline
Publicly disclosed
Apr 13, 2013
Added to CISA KEV
Sep 15, 2022
Added to Industry KEV feed
Sep 15, 2022
Added to CIRCL KEV
Sep 15, 2022
Added to ENISA EUVD
Sep 15, 2022
Last updated
Aug 4, 2026
Weakness Type
- CWE-190 Integer Overflow or Wraparound
References
- advisoryhttp://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=b4cbb197c7e7a68dbad0d491242e3ca67420c13e
- advisoryhttp://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=fc9bbca8f650e5f738af8806317c0a041a48ae4a
- advisoryhttp://kb.juniper.net/InfoCenter/index?page=content&id=JSA10761
- advisoryRHSA-2015:0695
- advisoryRHSA-2015:0782
FAQ
Common Questions.
Integer overflow in the fb_mmap function in drivers/video/fbmem.c in the Linux kernel before 3.8.9, as used in a certain Motorola build of Android 4.1.2 and other products, allows local users to create a read-write memory mapping for the entirety of kernel memory, and consequently gain privileges, via crafted /dev/gra…
Affected: Linux Kernel; Android (Motorola) versions 4.1.2; linux (debian), among others. The full list is in the CVE brief.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Sep 15, 2022.
Yes. It was added on Sep 15, 2022 with a federal remediation due date of Oct 6, 2022.
Public exploit code is available.
Fixed versions are available, including kernel 0:2.6.18-409.el5, kernel 0:2.6.32-431.53.2.el6, kernel 2.6.18-409.0.0.0.1.el5.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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