Description
Multiple use-after-free vulnerabilities in SPL in PHP before 5.4.44, 5.5.x before 5.5.28, and 5.6.x before 5.6.12 allow remote attackers to execute arbitrary code via vectors involving (1) ArrayObject, (2) SplObjectStorage, and (3) SplDoublyLinkedList, which are mishandled during unserialization.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 8 | php5 | 5.6.12+dfsg-0+deb8u1 | DSA-3344-1 |
| Debian 7 | php5 | 5.4.44-0+deb7u1 | DSA-3344-1 |
| Debian 6.0 | php5 | 5.3.3.1-7+squeeze28 | DLA-341-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | php5 | 5.5.9+dfsg-1ubuntu4.13 | USN-2758-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 2 | rh-php56-php +27 | 5.6.5-8.el6 | RHSA-2016:0457 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 | php5 | 5.5.14-36.1 | SUSE-SU-2015:1633-1 |
| SLES 11 SP4 | php53 | 5.3.17-48.1 | SUSE-SU-2015:1818-1 |
| SLES 11 SP3 | php53 | 5.3.17-48.1 | SUSE-SU-2015:1818-1 |
| SLES 11 SP2 | php53 | 5.3.17-47.1 | SUSE-SU-2016:1638-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 11 SP4 | php53 | 5.3.17-48.1 | SUSE-SU-2015:1818-1 |
| SLES for SAP 11 SP3 | php53 | 5.3.17-48.1 | SUSE-SU-2015:1818-1 |
Advisories 7
- RHSA-2016:0457 Red Hat Security Advisory: rh-php56-php security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- USN-2758-1 php5 vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DLA-341-1 php5 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-3344-1 php5 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2015:1633-1 Security update for php5 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:1638-1 Security update for php53 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2015:1818-1 Security update for php53 SUSE / openSUSE Security Updates · Feb 4, 2026
References
- DSA-3344 vendor-advisory
- 76737 vdb-entry
- https://bugs.php.net/bug.php?id=70169
- https://bugs.php.net/bug.php?id=70168
- [oss-security] 20150819 CVE Request: more php unserializing issues mailing-list
- http://www.php.net/ChangeLog-5.php
- https://bugs.php.net/bug.php?id=70166
- https://bugs.php.net/bug.php?id=70155
- GLSA-201606-10 vendor-advisory