CVE-2017-18224 (NVD)

2018-03-12

In the Linux kernel before 4.15, fs/ocfs2/aops.c omits use of a semaphore and consequently has a race condition for access to the extent tree during read operations in DIRECT mode, which allows local users to cause a denial of service (BUG) by modifying a certain e_cpos field.

Products Linux_kernel
Type Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') (CWE-362)
First patch https://github.com/torvalds/linux/commit/3e4c56d41eef5595035872a2ec5a483f42e8917f
Relevant file/s ./fs/ocfs2/aops.c (modified, +18, -8)
Links • http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=3e4c56d41eef5595035872a2ec5a483f42e8917f
• http://www.securityfocus.com/bid/103353
• https://www.debian.org/security/2018/dsa-4188

linux - Tree: 3e4c56d41e

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