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CVE-2018-20961: linux linux_kernel Double Free

Modified
AliasesUBUNTU-CVE-2018-20961DEBIAN-CVE-2018-20961
Published 07-08-2019Last modified 05-08-2024

Vulnerability summary

CVE-2018-20961 is a high (CVSS 10.0) Double Free vulnerability in linux linux_kernel. EPSS estimates a 6.34% chance of exploitation in the next 30 days, higher than 93.6% of scored vulnerabilities. 1 public exploit is recorded.

Priority
Prioritisepublic exploit

Public exploit (reference, Date unknown)

Source freshness unavailable

How is this decided?
CVSS score
10.0/10
010
High · v2.0 (NVD)
EPSS score
6.34%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits1reference

Advisory lineage

Upstream 0 · Downstream 1 · Related 1
USN-4145-1

Timeline

  1. 07-08-2019
    PublishedVulnerability first disclosed.
  2. 05-08-2024
    Last modifiedVulnerability information updated.

Description

In the Linux kernel before 4.16.4, a double free vulnerability in the f_midi_set_alt function of drivers/usb/gadget/function/f_midi.c in the f_midi driver may allow attackers to cause a denial of service or possibly have unspecified other impact.

CVSS metrics

5 scores · 3 sources · 3 versions

EPSS trend

Probability

6.34%

Chance of exploitation in the next 30 days

Percentile

94%

Versus all other CVEs

30-day change

No change 0.00 pp

From 6.34% 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
  • referenceUnverified

    Exploit Reference (git.kernel.org)

    Maturity: unknown

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.

Ubuntu15 products
  • linux< 4.4.0-165.193 | < 4.15.0-24.26
  • linux-aws< 4.4.0-1055.59
  • linux-azure-fdeAll versions (No fix recorded)
  • linux-fips< 4.4.0-1022.27 | All versions (No fix recorded)
  • linux-gcp< 4.15.0-1014.14~16.04.1 | < 4.15.0-1010.10
Debian1 product
  • linux< 4.16.5-1
Linux1 product
  • linux_kernel≥ 4.4, < 4.4.190 | ≥ 4.5, < 4.9.96 | ≥ 4.10, < 4.14.36 | ≥ 4.15.0, < 4.16.4

3 vendors · 17 products

References

14 links
Show all 14 references