zlib: backport security fix for a reproducible crash in compressor
authorPetr Štetiar <ynezz@true.cz>
Thu, 24 Mar 2022 05:45:04 +0000 (06:45 +0100)
committerPetr Štetiar <ynezz@true.cz>
Thu, 24 Mar 2022 09:02:01 +0000 (10:02 +0100)
commit0af411f49d43cb6e6cb00773abe63504392fb873
tree6aef6362eeed556a7c8b49b6f5209efddfbf4726
parent565159db573a68d5dbc2a73231dd999b5d45781b
zlib: backport security fix for a reproducible crash in compressor

Tavis has just reported, that he was recently trying to track down a
reproducible crash in a compressor. Believe it or not, it really was a
bug in zlib-1.2.11 when compressing (not decompressing!) certain inputs.

Tavis has reported it upstream, but it turns out the issue has been
public since 2018, but the patch never made it into a release. As far as
he knows, nobody ever assigned it a CVE.

Runtime tested on ipq40xx/glinet-b1300 and mvebu/turris-omnia.

Suggested-by: Tavis Ormandy <taviso@gmail.com>
References: https://www.openwall.com/lists/oss-security/2022/03/24/1
Signed-off-by: Petr Štetiar <ynezz@true.cz>
(cherry picked from commit b3aa2909a79aeff20d594160b207a89dc807c033)
(cherry picked from commit 3965dda0fa70dc9408f1a2e55a3ddefde78bd50e)
(cherry picked from commit f65edc9b990c2bcc10c9e9fca29253adc6fe316d)
package/libs/zlib/Makefile
package/libs/zlib/patches/006-fix-compressor-crash-on-certain-inputs.patch [new file with mode: 0644]
tools/zlib/Makefile
tools/zlib/patches/006-fix-compressor-crash-on-certain-inputs.patch [new file with mode: 0644]