Description
Buffer Overflow vulnerability in function bitwriter_grow_ in flac before 1.4.0 allows remote attackers to run arbitrary code via crafted input to the encoder.
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 | flac | 1.4.1-1 | — |
| Debian 13 | flac | 1.4.1-1 | — |
| Debian 12 | flac | 1.4.1-1 | — |
| Debian 11 | flac | 1.3.3-2+deb11u2 | DSA-5500-1 |
| Debian 10 | flac | 1.3.2-3+deb10u3 | DLA-3581-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 22.04 LTS | flac | 1.3.3-2ubuntu0.2 | USN-6360-1 |
| Ubuntu 20.04 LTS | flac | 1.3.3-1ubuntu0.2 | USN-6360-1 |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 18.04 LTS | flac | 1.3.2-1ubuntu0.1+esm1 | USN-6360-2 |
| Ubuntu Pro 16.04 LTS | flac | 1.3.1-4ubuntu0.1~esm2 | USN-6360-2 |
| Ubuntu Pro 14.04 LTS | flac | 1.3.0-2ubuntu0.14.04.1+esm2 | USN-6360-2 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9 | flac +2 | 1.3.3-10.el9_2.1 | RHSA-2023:5048 |
| RHEL 8 | flac +2 | 1.3.2-9.el8_8.1 | RHSA-2023:5046 |
Show 9 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9.0 EUS | flac +2 | 1.3.3-9.el9_0.1 | RHSA-2023:5047 |
| RHEL 8.6 EUS | flac +2 | 1.3.2-9.el8_6.1 | RHSA-2023:5045 |
| RHEL 8.4 TUS | flac +1 | 1.3.2-9.el8_4.1 | RHSA-2023:5044 |
| RHEL 8.4 E4S | flac +1 | 1.3.2-9.el8_4.1 | RHSA-2023:5044 |
| RHEL 8.4 AUS | flac +1 | 1.3.2-9.el8_4.1 | RHSA-2023:5044 |
| RHEL 8.2 TUS | flac +1 | 1.3.2-9.el8_2.1 | RHSA-2023:5043 |
| RHEL 8.2 E4S | flac +1 | 1.3.2-9.el8_2.1 | RHSA-2023:5043 |
| RHEL 8.2 AUS | flac +1 | 1.3.2-9.el8_2.1 | RHSA-2023:5043 |
| RHEL 8.1 E4S | flac +1 | 1.3.2-9.el8_1.1 | RHSA-2023:5042 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 9 | flac +2 | 1.3.3-10.el9_2.1 | ALSA-2023:5048 |
| AlmaLinux 8 | flac +2 | 1.3.2-9.el8_8.1 | ALSA-2023:5046 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 9 | flac | 1.3.3-10.el9_2.1 | RLSA-2023:5048 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP5 | flac | 1.3.2-150000.3.14.1 | SUSE-SU-2023:3635-1 |
| SLES 15 SP4 | flac | 1.3.2-150000.3.14.1 | SUSE-SU-2023:3635-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SUSE Manager Server 4.2 | flac | 1.3.2-150000.3.14.1 | SUSE-SU-2023:3635-1 |
| SUSE Manager Proxy 4.2 | flac | 1.3.2-150000.3.14.1 | SUSE-SU-2023:3635-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.5 | flac | 1.3.2-150000.3.14.1 | SUSE-SU-2023:3635-1 |
| openSUSE Leap 15.4 | flac | 1.3.2-150000.3.14.1 | SUSE-SU-2023:3635-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | flac +2 | 1.3.0-5.amzn2.0.5 | ALAS2-2023-2283 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 2 (CBL-Mariner) | flac | 1.4.3-1 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 9 | flac +2 | 1.3.3-10.el9_2.1 | ELSA-2023-5048 |
| Oracle Linux 8 | flac +2 | 1.3.2-9.el8_8.1 | ELSA-2023-5046 |
Advisories 19
- ALSA-2023:5048 Important: flac security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2023:5046 Important: flac security update AlmaLinux Security Advisories · Oct 29, 2026
- USN-6360-2 flac vulnerability Ubuntu Security Notices (USN) · Jun 29, 2026
- RHSA-2023:5045 Red Hat Security Advisory: flac security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2023:5046 Red Hat Security Advisory: flac security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2023:5047 Red Hat Security Advisory: flac security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2023:5048 Red Hat Security Advisory: flac security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RLSA-2023:5048 Important: flac security update Rocky Linux Security Advisories · Jun 25, 2026
- USN-6360-1 flac vulnerability Ubuntu Security Notices (USN) · Apr 22, 2026
- DSA-5500-1 flac - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-3581-1 flac - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2023:3635-1 Security update for flac SUSE / openSUSE Security Updates · Feb 4, 2026
- RHSA-2023:5044 Red Hat Security Advisory: flac security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- RHSA-2023:5043 Red Hat Security Advisory: flac security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- RHSA-2023:5042 Red Hat Security Advisory: flac security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- ALAS2-2023-2283 Moderate: flac security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Oct 5, 2023
- WID-SEC-2023-2306 Red Hat Enterprise Linux: Schwachstelle ermöglicht Codeausführung BSI CERT-Bund (WID) · Oct 5, 2023
- ELSA-2023-5048 Important: flac security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Sep 13, 2023
- ELSA-2023-5046 Important: flac security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Sep 13, 2023
References
- https://github.com/xiph/flac/issues/215
- FEDORA-2023-bf8423a373 vendor-advisory
- DSA-5500 vendor-advisory
- [debian-lts-announce] 20230925 [SECURITY] [DLA 3581-1] flac security update mailing-list