Description
oc_huff_tree_unpack in huffdec.c in libtheora in Theora through 1.0 7180717 has an invalid negative left shift. NOTE: this is disputed by third parties because there is no evidence of a security impact, e.g., an application would not crash.
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 14 | libtheora | 1.2.0~alpha1+dfsg-6 | — |
| Debian 13 | libtheora | 1.2.0~alpha1+dfsg-6 | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP6 | mozjs115 | 115.4.0-150600.3.9.1 | SUSE-SU-2025:1340-1 |
| SLES 15 SP6 | mozjs52 | 52.6.0-150000.3.6.1 | SUSE-SU-2025:1287-1 |
| SLES 15 SP6 | mozjs60 | 60.9.0-150200.6.3.1 | SUSE-SU-2025:1365-1 |
| SLES 15 SP6 | mozjs78 | 78.15.0-150400.3.14.1 | SUSE-SU-2025:1288-1 |
Show 5 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLE Micro 5.4 | mozjs60 | 60.9.0-150200.6.3.1 | SUSE-SU-2025:1365-1 |
| SLE Micro 5.3 | mozjs60 | 60.9.0-150200.6.3.1 | SUSE-SU-2025:1365-1 |
| SLE Micro 5.2 | mozjs60 | 60.9.0-150200.6.3.1 | SUSE-SU-2025:1365-1 |
| SLE Micro 5.1 | mozjs60 | 60.9.0-150200.6.3.1 | SUSE-SU-2025:1365-1 |
| SUSE Package Hub 15 SP6 | mozjs102 | 102.15.1-bp156.3.3.1 | openSUSE-SU-2025:0147-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | libtheora | 1.2.0-1.1 | openSUSE-SU-2025:14957-1 |
| openSUSE Tumbleweed | mozjs115 | 115.15.0-5.1 | openSUSE-SU-2025:15002-1 |
| openSUSE Tumbleweed | mozjs128 | 128.9.0-2.1 | openSUSE-SU-2025:15009-1 |
| openSUSE Leap 15.6 | mozjs102 | 102.15.1-bp156.3.3.1 | openSUSE-SU-2025:0147-1 |
| openSUSE Leap 15.6 | mozjs115 | 115.4.0-150600.3.9.1 | SUSE-SU-2025:1340-1 |
| openSUSE Leap 15.6 | mozjs52 | 52.6.0-150000.3.6.1 | SUSE-SU-2025:1287-1 |
| openSUSE Leap 15.6 | mozjs60 | 60.9.0-150200.6.3.1 | SUSE-SU-2025:1365-1 |
| openSUSE Leap 15.6 | mozjs78 | 78.15.0-150400.3.14.1 | SUSE-SU-2025:1288-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | thunderbird | 128.8.1-1.amzn2.0.4 | ALAS2-2025-2830 |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
GitHub 1 repository
-
UnionTech-Software/libtheora-CVE-2024-56431-PoC ★ 1 · Dec 25, 2024
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 9
- openSUSE-SU-2025:0147-1 Security update for mozjs102 SUSE / openSUSE Security Updates · Mar 23, 2026
- openSUSE-SU-2025:15002-1 libmozjs-115-0-115.15.0-5.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2025:14957-1 libtheora-devel-1.2.0-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2025:15009-1 libmozjs-128-0-128.9.0-2.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2025:1287-1 Security update for mozjs52 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2025:1288-1 Security update for mozjs52 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2025:1365-1 Security update for mozjs60 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2025:1340-1 Security update for mozjs52 SUSE / openSUSE Security Updates · Feb 4, 2026
- ALAS2-2025-2830 Moderate: thunderbird security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Apr 16, 2025