Description
The dgnc_mgmt_ioctl function in drivers/staging/dgnc/dgnc_mgmt.c in the Linux kernel through 4.3.3 does not initialize a certain structure member, which allows local users to obtain sensitive information from kernel memory via a crafted application.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | linux | 4.4.2-1 | — |
| Debian 13 | linux | 4.4.2-1 | — |
| Debian 12 | linux | 4.4.2-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | linux | 3.13.0-73.116 | USN-2841-1 |
| Ubuntu 14.04 LTS | linux-lts-utopic | 3.16.0-56.75~14.04.1 | USN-2844-1 |
| Ubuntu 14.04 LTS | linux-lts-vivid | 3.19.0-41.46~14.04.2 | USN-2842-2 |
| Ubuntu 14.04 LTS | linux-lts-wily | 4.2.0-21.25~14.04.1 | USN-2843-2 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | kernel-source | 4.8.13-1.1 | openSUSE-SU-2024:10128-1 |
Advisories 5
- USN-2842-2 linux-lts-vivid vulnerabilities Ubuntu Security Notices (USN) · Sep 7, 2026
- USN-2843-2 linux-lts-wily vulnerabilities Ubuntu Security Notices (USN) · Sep 7, 2026
- USN-2844-1 linux-lts-utopic vulnerabilities Ubuntu Security Notices (USN) · Sep 7, 2026
- USN-2841-1 linux vulnerabilities Ubuntu Security Notices (USN) · Sep 7, 2026
- openSUSE-SU-2024:10128-1 kernel-debug-4.8.13-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
References
- USN-2841-2 vendor-advisory
- 77317 vdb-entry
- USN-2843-1 vendor-advisory
- USN-2844-1 vendor-advisory
- USN-2842-2 vendor-advisory
- USN-2843-2 vendor-advisory
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=4b6184336ebb5c8dc1eae7f7ab46ee608a748b05
- USN-2842-1 vendor-advisory
- [oss-security] 20151021 Re: CVE Request: Linux Kernel ioctl infoleaks on vivid-osd and dgnc mailing-list
- 1034896 vdb-entry
- https://github.com/torvalds/linux/commit/4b6184336ebb5c8dc1eae7f7ab46ee608a748b05
- https://bugzilla.redhat.com/show_bug.cgi?id=1274728
- USN-2841-1 vendor-advisory
- USN-2843-3 vendor-advisory