CVE-2018-17958: canonical ubuntu_linux Integer Overflow or Wraparound

Modified

AliasesUBUNTU-CVE-2018-17958DEBIAN-CVE-2018-17958

Published 09-10-2018Last modified 28-04-2026

Vulnerability summary

CVE-2018-17958 is a high (CVSS 7.5) Integer Overflow or Wraparound vulnerability in canonical ubuntu_linux. EPSS estimates a 6.29% chance of exploitation in the next 30 days, higher than 93.6% of scored vulnerabilities.

Priority

Prioritisesevere

Severe, CVSS 7.5 (CVE.org); no exploitation reported by the 5 checked sources; EPSS 6% (FIRST, 03-11-2026)

Source freshness unavailable

How is this decided?

CVSS score

7.5/10

010

High · v3.1 (CVE.org)

EPSS score

6.29%

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 18 · Related 14

DLA-1646-1 DSA-4454-1 RHSA-2019:2425 RHSA-2019:2553 SUSE-SU-2018:3912-1 SUSE-SU-2018:3927-1+12 more

Timeline

09-10-2018
PublishedVulnerability first disclosed.
28-04-2026
Last modifiedVulnerability information updated.

Description

Qemu has a Buffer Overflow in rtl8139_do_receive in hw/net/rtl8139.c because an incorrect integer data type is used.

CVSS metrics

6 scores · 4 sources · 3 versions

v3.17.5v3.07.5v2.05.0

EPSS trend

Probability

6.29%

Chance of exploitation in the next 30 days

Percentile

94%

Versus all other CVEs

30-day change

No change 0.00 pp

From 6.29% 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

CWE-190Integer Overflow or WraparoundThe product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

Affected systems

Version check

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

Debian2 products

qemu< 1:3.1+dfsg-1
debian_linuxEOL8.0 | 9.0

Redhat2 products

virtualization4.0
virtualization_manager4.3

Canonical1 product

ubuntu_linuxEOL14.04 | 16.04 | 18.04 | 18.10

Qemu1 product

qemu≤ 3.0.1

Ubuntu1 product

qemu< 2.0.0+dfsg-2ubuntu1.44 | < 1:2.5+dfsg-5ubuntu10.33 | < 1:2.11+dfsg-1ubuntu7.8

5 vendors · 7 products

References

13 links

www.openwall.com/lists/oss-security/2018/10/08/1Mailing ListX Refsource MLISTThird Party Advisory
lists.gnu.org/archive/html/qemu-devel/2018-09/msg03269.htmlMailing ListX Refsource MLISTPatchThird Party AdvisoryREPORT
www.securityfocus.com/bid/105556VDB EntryX Refsource BIDThird Party Advisory
lists.debian.org/debian-lts-announce/2019/01/msg00023.htmlMailing ListX Refsource MLISTThird Party Advisory
usn.ubuntu.com/3826-1/Vendor AdvisoryX Refsource UBUNTUThird Party Advisory
www.debian.org/security/2019/dsa-4454Vendor AdvisoryX Refsource DEBIANThird Party Advisory
seclists.org/bugtraq/2019/May/76Mailing ListX Refsource BUGTRAQThird Party Advisory
access.redhat.com/errata/RHSA-2019:2425Vendor AdvisoryX Refsource REDHATThird Party Advisory
access.redhat.com/errata/RHSA-2019:2553Vendor AdvisoryX Refsource REDHATThird Party Advisory
ubuntu.com/security/CVE-2018-17958REPORT

Show all 13 references

ubuntu.com/security/notices/USN-3826-1Advisory
www.cve.org/CVERecord?id=CVE-2018-17958REPORT
security-tracker.debian.org/tracker/CVE-2018-17958Advisory