Description
The put_no_rnd_pixels8_xy2_mmx function in x86/rnd_template.c in libav 11.7 and earlier allows remote attackers to cause a denial of service (NULL pointer dereference and crash) via a crafted MP3 file.
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 | libav | 6:11.8-1~deb8u1 | DSA-3685-1 |
| Debian 7 | libav | 6:0.8.19-0+deb7u1 | DLA-780-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 14.04 LTS | libav | 6:9.20-0ubuntu0.14.04.1+esm1 | — |
Advisories 2
- DLA-780-1 libav - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-3685-1 libav - security update Debian Security (DSA / DLA) · Mar 9, 2026
References
- https://git.libav.org/?p=libav.git%3Ba=commit%3Bh=136f55207521f0b03194ef5b55ba70f1635d6aee
- DSA-3685 vendor-advisory
- 93038 vdb-entry
- [oss-security] 20160917 libav: NULL pointer dereference in put_no_rnd_pixels8_xy2_mmx (rnd_template.c) mailing-list
- [oss-security] 20160916 Re: libav: NULL pointer dereference in put_no_rnd_pixels8_xy2_mmx (rnd_template.c) mailing-list
- [oss-security] 20160917 Re: Re: libav: NULL pointer dereference in put_no_rnd_pixels8_xy2_mmx (rnd_template.c) mailing-list
- https://bugzilla.libav.org/show_bug.cgi?id=962
- https://blogs.gentoo.org/ago/2016/09/17/libav-null-pointer-dereference-in-put_no_rnd_pixels8_xy2_mmx-rnd_template-c/