oss-sec mailing list archives
Re: Linux kernel: userfaultfd bypasses tmpfs file permissions (CVE-2018-18397; since 4.11; fixed in 4.14.87 and 4.19.7)
From: Yves-Alexis Perez <corsac () debian org>
Date: Thu, 13 Dec 2018 21:02:12 +0100
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 On Wed, 2018-12-12 at 15:24 +0100, Solar Designer wrote:
A question to ask may be: out of Linux kernel vulnerabilities being patched, are there more high and critical overall severity (e.g., as risk impact times risk probability) vulnerabilities found in "too recent" kernels than there are high and critical severity untracked vulnerabilities (also or instead) affecting "sufficiently old" kernels?
Data collected by Kees and regularly updated might help here. See https://events.linuxfoundation.org/wp-content/uploads/2017/12/Overview-and-Recent-Developments-Kernel-Self-Protection-Project_Kees-Cook.pdf#%5B%7B%22num%22%3A22%2C%22gen%22%3A0%7D%2C%7B%22name%22%3A%22XYZ%22%7D%2C0%2C446.4%2C0%5D for the last edition (sorry for the weird anchor, in case it breaks it's on slide 5) Regards, - -- Yves-Alexis -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEE8vi34Qgfo83x35gF3rYcyPpXRFsFAlwSusQACgkQ3rYcyPpX RFvdUwf+J6G9ACV35269DdJSWO27c/LuAhuxxCHbSjEf3EeGamBcEksV6+OysAiv 9oy/iwnk37ksv7ZlRDiJbhIRZQyKWv8vTHx+X0ntgi5MIs31Yby3Q3agL1irW+b+ 2DnUoeoZH+RIXk9Tm97XfJTDm9hJere7hwI8jQAUuNf/a2vu9oDlCYnvh5ZRz537 4Q4w2lR03dsRCm8gvDFtbLjYzTu3xoscEkHafxoSbU/7RLkqYAmbU6FhqfZ4MQ9m Q/oNIDIw/Lh28kByTII98Af6P03td1pS1aPre8KYw62BuJrZ87+z22ehjP7j5srm l0Qx1W3g6fudzwY4RVTkqtQMyAZ5/w== =O/RN -----END PGP SIGNATURE-----
Current thread:
- Linux kernel: userfaultfd bypasses tmpfs file permissions (CVE-2018-18397; since 4.11; fixed in 4.14.87 and 4.19.7) Jann Horn (Dec 12)
- Re: Linux kernel: userfaultfd bypasses tmpfs file permissions (CVE-2018-18397; since 4.11; fixed in 4.14.87 and 4.19.7) Solar Designer (Dec 12)
- Re: Linux kernel: userfaultfd bypasses tmpfs file permissions (CVE-2018-18397; since 4.11; fixed in 4.14.87 and 4.19.7) Greg KH (Dec 13)
- Re: Linux kernel: userfaultfd bypasses tmpfs file permissions (CVE-2018-18397; since 4.11; fixed in 4.14.87 and 4.19.7) Yves-Alexis Perez (Dec 13)
- Re: Linux kernel: userfaultfd bypasses tmpfs file permissions (CVE-2018-18397; since 4.11; fixed in 4.14.87 and 4.19.7) Solar Designer (Dec 14)
- Re: Linux kernel: userfaultfd bypasses tmpfs file permissions (CVE-2018-18397; since 4.11; fixed in 4.14.87 and 4.19.7) Solar Designer (Dec 14)
- Re: Linux kernel: userfaultfd bypasses tmpfs file permissions (CVE-2018-18397; since 4.11; fixed in 4.14.87 and 4.19.7) Brad Spengler (Dec 14)
- Re: Linux kernel: userfaultfd bypasses tmpfs file permissions (CVE-2018-18397; since 4.11; fixed in 4.14.87 and 4.19.7) Solar Designer (Dec 14)
- Re: Linux kernel: userfaultfd bypasses tmpfs file permissions (CVE-2018-18397; since 4.11; fixed in 4.14.87 and 4.19.7) Solar Designer (Dec 12)
- Re: Linux kernel: userfaultfd bypasses tmpfs file permissions (CVE-2018-18397; since 4.11; fixed in 4.14.87 and 4.19.7) Jann Horn (Dec 14)