Vulnerability Details : CVE-2017-15537
The x86/fpu (Floating Point Unit) subsystem in the Linux kernel before 4.13.5, when a processor supports the xsave feature but not the xsaves feature, does not correctly handle attempts to set reserved bits in the xstate header via the ptrace() or rt_sigreturn() system call, allowing local users to read the FPU registers of other processes on the system, related to arch/x86/kernel/fpu/regset.c and arch/x86/kernel/fpu/signal.c.
Vulnerability category: Information leak
Products affected by CVE-2017-15537
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2017-15537
0.04%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 6 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2017-15537
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
2.1
|
LOW | AV:L/AC:L/Au:N/C:P/I:N/A:N |
3.9
|
2.9
|
NIST | |
|
5.5
|
MEDIUM | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
1.8
|
3.6
|
NIST |
CWE ids for CVE-2017-15537
-
The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.Assigned by: nvd@nist.gov (Primary)
References for CVE-2017-15537
-
https://source.android.com/security/bulletin/pixel/2018-01-01
Pixel / Nexus Security Bulletin—January 2018 | Android Open Source Project
-
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.5
Release Notes;Vendor Advisory
-
https://github.com/torvalds/linux/commit/814fb7bb7db5433757d76f4c4502c96fc53b0b5e
x86/fpu: Don't let userspace set bogus xcomp_bv · torvalds/linux@814fb7b · GitHubIssue Tracking;Patch;Third Party Advisory
-
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=814fb7bb7db5433757d76f4c4502c96fc53b0b5e
kernel/git/torvalds/linux.git - Linux kernel source treeIssue Tracking;Patch;Third Party Advisory
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