An use-after-free vulnerability has been found in bzip2 that could allow remote attackers to cause a Denial of Service condition.
|Package||app-arch/bzip2 on all architectures|
|Affected versions||< 1.0.6-r8|
|Unaffected versions||>= 1.0.6-r8|
bzip2 is a high-quality data compressor used extensively by Gentoo Linux.
A use-after-free flaw was found in bzip2recover, leading to a null pointer dereference, or a write to a closed file descriptor. Please review the CVE identifier referenced below for details.
A remote attacker could entice a user to process a specially crafted bzip2 archive using bzip2recover, possibly resulting in a Denial of Service condition.
There is no known workaround at this time.
All bzip2 users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=app-arch/bzip2-1.0.6-r8"
August 21, 2017
August 21, 2017: 1