5.5

CVE-2017-15537: linux linux_kernel

Modified
AliasesUBUNTU-CVE-2017-15537DEBIAN-CVE-2017-15537
Published 17-10-2017Last modified 05-08-2024

Vulnerability summary

CVE-2017-15537 is a medium (CVSS 5.5) vulnerability in linux linux_kernel. EPSS estimates a 0.40% chance of exploitation in the next 30 days, higher than 34% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.5/10
010
Medium · v3.0 (NVD)
EPSS score
0.40%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 2 · Related 2
USN-3469-1USN-3469-2

Timeline

  1. 17-10-2017
    PublishedVulnerability first disclosed.
  2. 05-08-2024
    Last modifiedVulnerability information updated.

Description

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.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

0.40%

Chance of exploitation in the next 30 days

Percentile

34%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.40% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu15 products
  • linux< 4.4.0-98.121
  • linux-aws< 4.4.0-1039.48
  • linux-azure< 4.13.0-1005.7
  • linux-azure-fdeAll versions (No fix recorded)
  • linux-gcp< 4.13.0-1002.5
Debian1 product
  • linux< 4.13.10-1
Linux1 product

3 vendors · 17 products

References

10 links