Description
A flaw was found in libwebp in versions before 1.0.1. A heap-based buffer overflow in function WebPDecodeRGBInto is possible due to an invalid check for buffer size. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | libwebp | libwebp 1.0.1 | — |
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 | libwebp | 0.6.1-2.1 | — |
| Debian 13 | libwebp | 0.6.1-2.1 | — |
| Debian 12 | libwebp | 0.6.1-2.1 | — |
| Debian 10 | libwebp | 0.6.1-2+deb10u1 | DSA-4930-1 |
| Debian 9 | libwebp | 0.5.2-1+deb9u1 | DLA-2677-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | libwebp | 0.6.1-2ubuntu0.20.04.1 | USN-4971-1 |
| Ubuntu 18.04 LTS | libwebp | 0.6.1-2ubuntu0.18.04.1 | USN-4971-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 16.04 LTS | libwebp | 0.4.4-1ubuntu0.1~esm1 | USN-4971-2 |
| Ubuntu Pro 14.04 LTS | libwebp | 0.4.0-4ubuntu0.1~esm1 | USN-4971-2 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8 | libwebp +1 | 1.0.0-3.el8_4 | RHSA-2021:2354 |
| RHEL 7 | libwebp +3 | 0.3.0-10.el7_9 | RHSA-2021:2260 |
| RHEL 7 | qt5-qtimageformats +1 | 5.9.7-2.el7_9 | RHSA-2021:2328 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8.2 EUS | libwebp +1 | 1.0.0-4.el8_2 | RHSA-2021:2364 |
| RHEL 8.1 EUS | libwebp +1 | 1.0.0-4.el8_1 | RHSA-2021:2365 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 8 | libwebp | 1.0.0-3.el8_4 | RLSA-2021:2354 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP3 | libwebp | 0.5.0-3.5.1 | SUSE-SU-2021:1860-1 |
| SLES 15 SP2 | libwebp | 0.5.0-3.5.1 | SUSE-SU-2021:1860-1 |
| SLES 15 SP1 | libwebp | 0.5.0-3.5.1 | SUSE-SU-2021:1860-1 |
| SLES 15 | libwebp | 0.5.0-3.5.1 | SUSE-SU-2021:1860-1 |
Show 8 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 15 SP1 | libwebp | 0.5.0-3.5.1 | SUSE-SU-2021:1860-1 |
| SLES for SAP 15 | libwebp | 0.5.0-3.5.1 | SUSE-SU-2021:1860-1 |
| SLE HPC 15 SP1 | libwebp | 0.5.0-3.5.1 | SUSE-SU-2021:1860-1 |
| SLE HPC 15 | libwebp | 0.5.0-3.5.1 | SUSE-SU-2021:1860-1 |
| SUSE Manager Server 4.0 | libwebp | 0.5.0-3.5.1 | SUSE-SU-2021:1860-1 |
| SUSE Manager Retail Branch Server 4.0 | libwebp | 0.5.0-3.5.1 | SUSE-SU-2021:1860-1 |
| SUSE Manager Proxy 4.0 | libwebp | 0.5.0-3.5.1 | SUSE-SU-2021:1860-1 |
| SUSE Enterprise Storage 6 | libwebp | 0.5.0-3.5.1 | SUSE-SU-2021:1860-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.3 | libwebp | 0.5.0-3.5.1 | openSUSE-SU-2021:1860-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | libwebp +3 | 0.3.0-10.amzn2 | ALAS2-2021-1676 |
| Amazon Linux 2 | qt5-qtimageformats +1 | 5.9.2-1.amzn2.0.2 | ALAS2-2021-1679 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 8 | libwebp +1 | 1.0.0-3.el8_4 | ELSA-2021-2354 |
| Oracle Linux 7 | libwebp +3 | 0.3.0-10.el7_9 | ELSA-2021-2260 |
| Oracle Linux 7 | qt5-qtimageformats +1 | 5.9.7-2.el7_9 | ELSA-2021-2328 |
Advisories 17
- USN-4971-2 libwebp vulnerabilities Ubuntu Security Notices (USN) · Jun 29, 2026
- RHSA-2021:2260 Red Hat Security Advisory: libwebp security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2021:2328 Red Hat Security Advisory: qt5-qtimageformats security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- USN-4971-1 libwebp vulnerabilities Ubuntu Security Notices (USN) · Apr 27, 2026
- DSA-4930-1 libwebp - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-2677-1 libwebp - security update Debian Security (DSA / DLA) · Mar 9, 2026
- RLSA-2021:2354 Important: libwebp security update Rocky Linux Security Advisories · Feb 4, 2026
- SUSE-SU-2021:1860-1 Security update for libwebp SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2021:1860-1 Security update for libwebp SUSE / openSUSE Security Updates · Feb 4, 2026
- RHSA-2021:2365 Red Hat Security Advisory: libwebp security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- RHSA-2021:2364 Red Hat Security Advisory: libwebp security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- RHSA-2021:2354 Red Hat Security Advisory: libwebp security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- ALAS2-2021-1676 Important: libwebp security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Jul 1, 2021
- ALAS2-2021-1679 Important: qt5-qtimageformats security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Jul 1, 2021
- ELSA-2021-2354 Important: libwebp security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Jun 10, 2021
- ELSA-2021-2328 Important: qt5-qtimageformats security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Jun 9, 2021
- ELSA-2021-2260 Important: libwebp security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Jun 8, 2021
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1956829
- [debian-lts-announce] 20210605 [SECURITY] [DLA 2672-1] libwebp security update mailing-list
- [debian-lts-announce] 20210606 [SECURITY] [DLA 2677-1] libwebp security update mailing-list
- DSA-4930 vendor-advisory
- https://support.apple.com/kb/HT212601
- 20210723 APPLE-SA-2021-07-21-1 iOS 14.7 and iPadOS 14.7 mailing-list
- https://security.netapp.com/advisory/ntap-20211112-0001/