7.1

CVE-2018-10938: canonical ubuntu_linux Loop with Unreachable Exit Condition

Modified
AliasesSUSE-SU-2018:2938-1SUSE-SU-2018:2964-1UBUNTU-CVE-2018-10938
Published 27-08-2018Last modified 05-08-2024

Vulnerability summary

CVE-2018-10938 is a high (CVSS 7.1) Loop with Unreachable Exit Condition vulnerability in canonical ubuntu_linux. EPSS estimates a 4.93% chance of exploitation in the next 30 days, higher than 92.1% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.9, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
7.1/10
010
High · v2.0 (NVD)
EPSS score
4.93%
0%100%
Low · -0.06 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 20 · Related 18
DLA-1531-1DSA-4308-1SUSE-SU-2018:2775-1SUSE-SU-2018:2776-1SUSE-SU-2018:2858-1SUSE-SU-2018:2860-1

Timeline

  1. 27-08-2018
    PublishedVulnerability first disclosed.
  2. 05-08-2024
    Last modifiedVulnerability information updated.

Description

A flaw was found in the Linux kernel present since v4.0-rc1 and through v4.13-rc4. A crafted network packet sent remotely by an attacker may force the kernel to enter an infinite loop in the cipso_v4_optptr() function in net/ipv4/cipso_ipv4.c leading to a denial-of-service. A certain non-default configuration of LSM (Linux Security Module) and NetLabel should be set up on a system before an attacker could leverage this flaw.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

4.93%

Chance of exploitation in the next 30 days

Percentile

92%

Versus all other CVEs

30-day change

Decrease -0.06 pp

From 5.00% 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: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu16 products
  • linux< 4.4.0-138.164
  • linux-aws< 4.4.0-1032.35 | < 4.4.0-1070.80
  • linux-azure< 4.13.0-1005.7
  • linux-azure-fdeAll versions (No fix recorded)
  • linux-fips< 4.4.0-1008.10
Debian2 products
Suse2 products
  • kernel-livepatch-SLE15_Update_2&distro=SUSE Linux Enterprise Live Patching 15< 4-2.1
  • kernel-livepatch-SLE15_Update_4&distro=SUSE Linux Enterprise Live Patching 15< 2-2.1
Canonical1 product
Linux1 product
  • linux_kernelEOL4.0 | 4.0:rc1 | 4.0:rc2 | 4.0:rc3 | 4.0:rc4 | 4.0:rc5 | 4.0:rc6 | 4.0:rc7 | 4.1 | 4.1:rc1 | 4.1:rc2 | 4.1:rc3 | 4.1:rc4 | 4.1:rc5 | 4.1:rc6 | 4.1:rc7 | 4.1:rc8 | 4.2 | 4.2:rc1 | 4.2:rc2 | 4.2:rc3 | 4.2:rc4 | 4.2:rc5 | 4.2:rc6 | 4.2:rc7 | 4.2:rc8 | 4.3 | 4.3:rc1 | 4.3:rc2 | 4.3:rc3 | 4.3:rc4 | 4.3:rc5 | 4.3:rc6 | 4.3:rc7 | 4.4 | 4.4:rc1 | 4.4:rc2 | 4.4:rc3 | 4.4:rc4 | 4.4:rc5 | 4.4:rc6 | 4.4:rc7 | 4.4:rc8 | 4.5 | 4.5:rc1 | 4.5:rc2 | 4.5:rc3 | 4.5:rc4 | 4.5:rc5 | 4.5:rc6 | 4.5:rc7 | 4.6 | 4.6:rc1 | 4.6:rc2 | 4.6:rc3 | 4.6:rc4 | 4.6:rc5 | 4.6:rc6 | 4.6:rc7 | 4.7 | 4.7:rc1 | 4.7:rc2 | 4.7:rc3 | 4.7:rc4 | 4.7:rc5 | 4.7:rc6 | 4.7:rc7 | 4.8 | 4.8:rc1 | 4.8:rc2 | 4.8:rc3 | 4.8:rc4 | 4.8:rc5 | 4.8:rc6 | 4.8:rc7 | 4.8:rc8 | 4.9 | 4.9:rc1 | 4.9:rc2 | 4.9:rc3 | 4.9:rc4 | 4.9:rc5 | 4.9:rc6 | 4.9:rc7 | 4.9:rc8 | 4.10 | 4.10:rc1 | 4.10:rc2 | 4.10:rc3 | 4.10:rc4 | 4.10:rc5 | 4.10:rc6 | 4.10:rc7 | 4.10:rc8 | 4.11 | 4.11:rc1 | 4.11:rc2 | 4.11:rc3 | 4.11:rc4 | 4.11:rc5 | 4.11:rc6 | 4.11:rc7 | 4.11:rc8 | 4.12 | 4.12:rc1 | 4.12:rc2 | 4.12:rc3 | 4.12:rc4 | 4.12:rc5 | 4.12:rc6 | 4.12:rc7 | 4.13:rc1 | 4.13:rc2 | 4.13:rc3 | 4.13:rc4

5 vendors · 22 products

References

21 links
Show all 21 references