CVE-2016-4429: canonical ubuntu_linux Out-of-bounds Write
Vulnerability summary
CVE-2016-4429 is a medium (CVSS 5.9) Out-of-bounds Write vulnerability in canonical ubuntu_linux. EPSS estimates a 4.58% chance of exploitation in the next 30 days, higher than 91.6% of scored vulnerabilities.
Not severe (CVSS 5.9, network access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 6 · Related 6Timeline
- 10-06-2016PublishedVulnerability first disclosed.
- 06-08-2024Last modifiedVulnerability information updated.
Description
Stack-based buffer overflow in the clntudp_call function in sunrpc/clnt_udp.c in the GNU C Library (aka glibc or libc6) allows remote servers to cause a denial of service (crash) or possibly unspecified other impact via a flood of crafted ICMP and UDP packets.
CVSS metrics
5 scores · 3 sources · 3 versions- OSV · UbuntuEcosystem advisory · calculated5.9MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated5.9MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
4.58%
Chance of exploitation in the next 30 days
Percentile
92%
Versus all other CVEs
30-day change
Increase +0.04 pp
From 4.54% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu3 products
- eglibc< 2.19-0ubuntu6.10
- glibc< 2.23-0ubuntu6
- libtirpc< 0.2.2-5ubuntu2.1 | < 0.2.5-1ubuntu0.1
Debian2 products
- glibc< 2.22-10
- libtirpc< 0.2.5-1.1 | < 0.2.5-1+deb8u3
Mageia2 products
- glibc< 2.20-23.mga5
- libtirpc< 0.2.5-3.1.mga5
Canonical1 product
- ubuntu_linuxEOL12.04 | 14.04 | 16.04 | 18.04
Gnu1 product
- glibc< 2.24
6 vendors · 11 products
References
19 links- lists.opensuse.org/opensuse-updates/2016-07/msg00039.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory
- lists.opensuse.org/opensuse-updates/2016-06/msg00030.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory
- www.oracle.com//security-alerts/cpujul2021.htmlX Refsource MISC
- sourceware.org/bugzilla/show_bug.cgi?id=20112X Refsource CONFIRMIssue TrackingPatchThird Party Advisory