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CVE-2017-5123

39
FAUCET Score

CVE-2017-5123 describes an insufficient data validation vulnerability in the waitid function of the Linux kernel, allowing a local attacker to escape sandboxes. This high-severity flaw (CVSS 8.8) has a low attack complexity and can lead to complete compromise of confidentiality, integrity, and availability. While not on the KEV catalog, public exploit code exists on ExploitDB, and it has garnered significant community discussion and media coverage, indicating active research and potential for exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
>= 4.13, < 4.13.7CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:netapp:h300s_firmware:-:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:netapp:h500s_firmware:-:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:netapp:h700s_firmware:-:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.0
Impact Score
6.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
3.71%
Probability of exploitation in next 30 days
EPSS Percentile
88.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
ExploitDB: EDB-43127 · Nov 6, 2017
This CVE's current EPSS score of 0.0371 is in the 98th percentile among its peer group of 17,070 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

redhatCVE-2017-5123Important

kernel: Missing access_ok() checks in waitid()

Oct 12, 2017

References

crbug.com / 772848
Vendor Advisory
git.kernel.org / pub/scm/linux/kernel/git/torvalds/linux.git/commit
PatchVendor Advisory
security.netapp.com / advisory/ntap-20211223-0003
Third Party Advisory