The 4.7.9 stable update contains a number of important fixes across the tree. In particular, it includes a fix for CVE-2016-5195.

Reboot Required
After installing this update it is required that you reboot your system to ensure the changes supplied by this update are applied properly.

How to install

sudo dnf upgrade --advisory=FEDORA-2016-c3558808cd

This update has been submitted for testing by jforbes.

3 years ago
User Icon naphan commented & provided feedback 3 years ago
karma

Works for me x86_64. Gnome, Core2 Quad, 4 GB, Radeon HD 3650.

This update has been pushed to testing.

3 years ago
User Icon naphan commented & provided feedback 3 years ago

I run Dirty COW test with 4.7.9. The exploit does not work. All OK.

BZ#1387080 CVE-2016-5195 kernel: mm: privilege escalation via MAP_PRIVATE COW breakage [fedora-all]
BZ#1384344 CVE-2016-5195 kernel: mm: privilege escalation via MAP_PRIVATE COW breakage
User Icon naphan commented & provided feedback 3 years ago
karma

I confirm CVE-2016-5195 kernel test. No regression.

BZ#1387080 CVE-2016-5195 kernel: mm: privilege escalation via MAP_PRIVATE COW breakage [fedora-all]
BZ#1384344 CVE-2016-5195 kernel: mm: privilege escalation via MAP_PRIVATE COW breakage
User Icon sdgathman commented & provided feedback 3 years ago
karma

The dirtycow exploit was taking too long on previous kernels, so the fact that it still doesn't work on this kernel doesn't mean much. I think my system may be too slow.

This update has been submitted for stable by bodhi.

3 years ago
User Icon adamwill commented & provided feedback 3 years ago
karma

Didn't check the COW fix, but it boots fine on multiple machines.

This update has been pushed to stable.

3 years ago
User Icon zdenek commented & provided feedback 3 years ago
karma

No issues with boot, test passed


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Metadata
Type
security
Severity
high
Karma
4
Signed
Content Type
RPM
Test Gating
Settings
Unstable by Karma
-3
Stable by Karma
3
Dates
submitted
3 years ago
in testing
3 years ago
in stable
3 years ago
BZ#1352140 [regression] [armv7] USB broken on BananaPi with kernel 4.6.3
0
0
BZ#1384344 CVE-2016-5195 kernel: mm: privilege escalation via MAP_PRIVATE COW breakage
0
1
BZ#1387080 CVE-2016-5195 kernel: mm: privilege escalation via MAP_PRIVATE COW breakage [fedora-all]
0
1

Automated Test Results

Test Cases

0 2 Test Case kernel regression