7.8

CVE-2017-11176: debian debian_linux Use After Free

Modified
AliasesUBUNTU-CVE-2017-11176DEBIAN-CVE-2017-11176
Published 11-07-2017Last modified 05-08-2024

Vulnerability summary

CVE-2017-11176 is a high (CVSS 7.8) Use After Free vulnerability in debian debian_linux. EPSS estimates a 3.85% chance of exploitation in the next 30 days, higher than 90.1% of scored vulnerabilities. 1 public exploit is recorded.

Priority
Prioritisepublic exploit

Public exploit (exploit-database, 02-10-2018)

Source freshness unavailable

How is this decided?
CVSS score
7.8/10
010
High · v3.1 (NVD)
EPSS score
3.85%
0%100%
Low · +0.03 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits1exploit-database

Advisory lineage

Upstream 0 · Downstream 18 · Related 10
DLA-1099-1DSA-3927-1DSA-3945-1RHSA-2017:2918RHSA-2017:2930RHSA-2017:2931

Timeline

  1. 11-07-2017
    PublishedVulnerability first disclosed.
  2. 05-08-2024
    Last modifiedVulnerability information updated.

Description

The mq_notify function in the Linux kernel through 4.11.9 does not set the sock pointer to NULL upon entry into the retry logic. During a user-space close of a Netlink socket, it allows attackers to cause a denial of service (use-after-free) or possibly have unspecified other impact.

CVSS metrics

5 scores · 3 sources · 3 versions

EPSS trend

Probability

3.85%

Chance of exploitation in the next 30 days

Percentile

90%

Versus all other CVEs

30-day change

Increase +0.03 pp

From 3.82% 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

1 found
  • exploit-databaselocallinuxUnverified

    Linux Kernel < 4.11.8 - 'mq_notify: double sock_put()' Local Privilege Escalation

    Maturity: poc

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.

Ubuntu18 products
  • linux< 3.13.0-135.184 | < 4.4.0-93.116
  • linux-aws< 4.4.0-1032.41
  • linux-azure-6.11All versions (No fix recorded)
  • linux-azure-fdeAll versions (No fix recorded)
  • linux-azure-fde-5.15All versions (No fix recorded)
Debian2 products
Linux1 product
  • linux_kernel< 3.2.92 | ≥ 3.3, < 3.16.47 | ≥ 3.17, < 3.18.61 | ≥ 3.19, < 4.1.43 | ≥ 4.2, < 4.4.77 | ≥ 4.5, < 4.9.38 | ≥ 4.10, < 4.11.11 | ≥ 4.12, < 4.12.2

3 vendors · 21 products

References

23 links
Show all 23 references