CVE-2015-7236: Use-after-free vulnerability in xprt_set_caller in rpcb_svc_com.c in rpcbind 0.2.1 and earlier allows remote a

Q: How do I fix CVE-2015-7236?

rpcbind: upgrade to newer than 0.2.1; ubuntu linux: mitigate or apply the listed mitigation; debian linux: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Q: Is CVE-2015-7236 being exploited?

CVE-2015-7236 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2015-7236 affect?

CVE-2015-7236 affects rpcbind, ubuntu linux, debian linux. Severity is high (CVSS 7.5). Use-after-free vulnerability in xprt_set_caller in rpcb_svc_com.c in rpcbind 0.2.1 and earlier allows remote attackers to cause a denial of service (daemon crash) via crafted packets, involving a PMAP_CALLIT code.

Q: How urgent is CVE-2015-7236?

Priority 60/100. High severity; EPSS top 6%: very likely to be exploited; Remotely exploitable, no login, no user action; On your watchlist

This week

HIGH 7.5REMOTEWATCHLISTUPGRADEMITIGATEMITIGATE

CVE-2015-7236 is a high-severity flaw (CVSS 7.5) affecting rpcbind, ubuntu linux, debian linux. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Use-after-free vulnerability in xprt_set_caller in rpcb_svc_com.c in rpcbind 0.2.1 and earlier allows remote attackers to cause a denial of service (daemon crash) via crafted packets, involving a PMAP_CALLIT code.

Why this priority

High severity
EPSS top 6%: very likely to be exploited
Remotely exploitable, no login, no user action
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	6.4% (top 6%)
CISA exploited list	No
Published	2015-10-01
Last modified	2026-06-17

Publisher (CNA): OpenText · Vendor: canonical · debian · oracle · rpcbind project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2015-10-01 20:59 UTCPublished CVE record published
2026-06-17 00:32 UTCUpdated Record last modified

rpcbind project rpcbind UPGRADE

Affected: <= 0.2.1

Fixed in: newer than 0.2.1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy rpcbind || rpm -q rpcbind || rpcbind --version

2. UPGRADE to newer than 0.2.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade rpcbind

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade rpcbind

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

canonical ubuntu linux MITIGATE

Affected: 12.04 · 14.04 · 15.04

Fixed in: no fixed release known

Safe to downgrade to: a release before 12.04

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

debian debian linux MITIGATE

Affected: 7.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 7.0

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

oracle solaris MITIGATE

Affected: 10 · 11.3

Fixed in: no fixed release known

Safe to downgrade to: a release before 10

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2015-7236?

rpcbind: upgrade to newer than 0.2.1; ubuntu linux: mitigate or apply the listed mitigation; debian linux: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2015-7236 being exploited?

CVE-2015-7236 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2015-7236 affect?

CVE-2015-7236 affects rpcbind, ubuntu linux, debian linux. Severity is high (CVSS 7.5). Use-after-free vulnerability in xprt_set_caller in rpcb_svc_com.c in rpcbind 0.2.1 and earlier allows remote attackers to cause a denial of service (daemon crash) via crafted packets, involving a PMAP_CALLIT code.

How urgent is CVE-2015-7236?

Priority 60/100. High severity; EPSS top 6%: very likely to be exploited; Remotely exploitable, no login, no user action; On your watchlist

Software pages

Ubuntu vulnerabilities · Debian vulnerabilities

Related CVEs

CVE-2017-8779 HIGH 7.5 UPGRADE UPGRADE rpcbind through 0.2.4, LIBTIRPC through 1.0.1 and 1.0.2-rc through 1.0.2-rc3, and NTIRPC through 1.4.3 do not

References

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