Linux Kernel key_gc_unused_keys() Garbage Collection Bug Lets Local Users Cause Denial of Service Conditions on the Target System
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SecurityTracker Alert ID: 1034472 |
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SecurityTracker URL: http://securitytracker.com/id/1034472
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CVE Reference:
CVE-2015-7872
(Links to External Site)
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Date: Dec 17 2015
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Impact:
Denial of service via local system
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Fix Available: Yes Vendor Confirmed: Yes
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Description:
A vulnerability was reported in the Linux kernel. A local user can cause denial of service conditions on the target system.
A local user can supply a specially crafted keyctl command to trigger a garbage collection error in the keyring handler and cause the target system to crash.
The vulnerability resides in the key_gc_unused_keys() function in 'security/keys/gc.c'.
Dmitry Vyukov reported this vulnerability.
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Impact:
A local user can cause the target system to crash.
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Solution:
The vendor has issued a source code fix, available at:
https://github.com/torvalds/linux/commit/ce1fad2740c648a4340f6f6c391a8a83769d2e8c
https://github.com/torvalds/linux/commit/f05819df10d7b09f6d1eb6f8534a8f68e5a4fe61
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Vendor URL: www.kernel.org/ (Links to External Site)
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Cause:
State error
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Message History:
This archive entry has one or more follow-up message(s) listed below.
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Source Message Contents
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[Original Message Not Available for Viewing]
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