Ubuntu.comUB:CVE-2017-15537CVE-2017-15537
5.5 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
2.1 Low
CVSS2
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:L/AC:L/Au:N/C:P/I:N/A:N
0.0004 Low
EPSS
Percentile
5.3%
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.
Notes
| Author | Note |
|---|---|
| sbeattie | requires a processor with the “xsave” feature but without the “xsaves” feature (e.g. Sandy Bridge through Broadwell for Intel. |
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| ubuntu | 17.10 | noarch | linux | < 4.13.0-17.20 | UNKNOWN |
| ubuntu | 16.04 | noarch | linux | < 4.4.0-98.121 | UNKNOWN |
| ubuntu | 16.04 | noarch | linux-aws | < 4.4.0-1039.48 | UNKNOWN |
| ubuntu | 16.04 | noarch | linux-azure | < 4.13.0-1005.7 | UNKNOWN |
| ubuntu | 16.04 | noarch | linux-gcp | < 4.13.0-1002.5 | UNKNOWN |
| ubuntu | 16.04 | noarch | linux-gke | < 4.4.0-1033.33 | UNKNOWN |
| ubuntu | 16.04 | noarch | linux-hwe | < 4.13.0-26.29~16.04.2 | UNKNOWN |
| ubuntu | 18.04 | noarch | linux-hwe-edge | < 4.18.0-8.9~18.04.1 | UNKNOWN |
| ubuntu | 16.04 | noarch | linux-hwe-edge | < 4.13.0-26.29~16.04.2 | UNKNOWN |
| ubuntu | 16.04 | noarch | linux-kvm | < 4.4.0-1009.14 | UNKNOWN |
References
git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=814fb7bb7db5433757d76f4c4502c96fc53b0b5e
www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.5
github.com/torvalds/linux/commit/814fb7bb7db5433757d76f4c4502c96fc53b0b5e
launchpad.net/bugs/cve/CVE-2017-15537
nvd.nist.gov/vuln/detail/CVE-2017-15537
security-tracker.debian.org/tracker/CVE-2017-15537
ubuntu.com/security/notices/USN-3469-1
ubuntu.com/security/notices/USN-3469-2
ubuntu.com/security/notices/USN-3487-1
www.cve.org/CVERecord?id=CVE-2017-15537
Related
5.5 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
2.1 Low
CVSS2
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:L/AC:L/Au:N/C:P/I:N/A:N
0.0004 Low
EPSS
Percentile
5.3%