CVE-2025-56226

Libsndfile <=1.2.2 contains a memory leak vulnerability in the mpeg_l3_encoder_init() function...

5.3 MediumFix available

Libsndfile <=1.2.2 contains a memory leak vulnerability in the mpeg_l3_encoder_init() function within the mpeg_l3_encode.c file.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: None
Integrity: None
Availability: Low

Exploit likelihood

0.37%Up 0.3 points since Jan 15, 2026

What each source reports

CVE List Score used 5.3

Libsndfile <=1.2.2 contains a memory leak vulnerability in the mpeg_l3_encoder_init() function within the mpeg_l3_encode.c file.

Record: CVE-2025-56226
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Weakness: CWE-401
Updated: 2026-11-02

EUVDEUVD-2026-2514 5.3

Libsndfile <=1.2.2 contains a memory leak vulnerability in the mpeg_l3_encoder_init() function within the mpeg_l3_encode.c file.

Record: EUVD-2026-2514
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Updated: 2026-11-02

GitHub AdvisoriesGHSA-84f2-pwrw-r53v 5.3

Libsndfile <=1.2.2 contains a memory leak vulnerability in the mpeg_l3_encoder_init() function...

Libsndfile <=1.2.2 contains a memory leak vulnerability in the mpeg_l3_encoder_init() function within the mpeg_l3_encode.c file.

Record: GHSA-84f2-pwrw-r53v
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Weakness: CWE-401
Updated: 2026-11-02

NVD 5.3

Libsndfile <=1.2.2 contains a memory leak vulnerability in the mpeg_l3_encoder_init() function within the mpeg_l3_encode.c file.

Record: CVE-2025-56226
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Weakness: CWE-401
Updated: 2026-11-02

OSV 5.3

Libsndfile <=1.2.2 contains a memory leak vulnerability in the mpeg_l3_encoder_init() function within the mpeg_l3_encode.c file.

Record: CVE-2025-56226
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Updated: 2026-11-02

OSVDEBIAN-CVE-2025-56226 5.3

Libsndfile <=1.2.2 contains a memory leak vulnerability in the mpeg_l3_encoder_init() function within the mpeg_l3_encode.c file.

Record: DEBIAN-CVE-2025-56226
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Updated: 2026-11-02

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OSVOESA-2026-1603 5.3

libsndfile security update

Libsndfile is a C library for reading and writing files containing sampled sound such as MS Windows WAV and the Apple/SGI AIFF format through one standard library interface.

Security Fix(es):

Libsndfile <=1.2.2 contains a memory leak vulnerability in the mpeg_l3_encoder_init() function within the mpeg_l3_encode.c file.(CVE-2025-56226)

Record: OESA-2026-1603
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Updated: 2026-11-02

OSVOESA-2026-1604 5.3

libsndfile security update

Libsndfile is a C library for reading and writing files containing sampled sound such as MS Windows WAV and the Apple/SGI AIFF format through one standard library interface.

Security Fix(es):

Libsndfile <=1.2.2 contains a memory leak vulnerability in the mpeg_l3_encoder_init() function within the mpeg_l3_encode.c file.(CVE-2025-56226)

Record: OESA-2026-1604
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Updated: 2026-11-02

OSVOESA-2026-1605 5.3

libsndfile security update

Libsndfile is a C library for reading and writing files containing sampled sound such as MS Windows WAV and the Apple/SGI AIFF format through one standard library interface.

Security Fix(es):

Libsndfile <=1.2.2 contains a memory leak vulnerability in the mpeg_l3_encoder_init() function within the mpeg_l3_encode.c file.(CVE-2025-56226)

Record: OESA-2026-1605
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Updated: 2026-11-02

OSVOESA-2026-1606 5.3

libsndfile security update

Libsndfile is a C library for reading and writing files containing sampled sound such as MS Windows WAV and the Apple/SGI AIFF format through one standard library interface.

Security Fix(es):

Libsndfile <=1.2.2 contains a memory leak vulnerability in the mpeg_l3_encoder_init() function within the mpeg_l3_encode.c file.(CVE-2025-56226)

Record: OESA-2026-1606
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Updated: 2026-11-02

OSVUBUNTU-CVE-2025-56226 5.3

Libsndfile <=1.2.2 contains a memory leak vulnerability in the mpeg_l3_encoder_init() function within the mpeg_l3_encode.c file.

Record: UBUNTU-CVE-2025-56226
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Updated: 2026-11-02

OSVAZL-74855 No score

CVE-2025-56226 affecting package libsndfile for versions less than 1.2.2-4

Libsndfile <=1.2.2 contains a memory leak vulnerability in the mpeg_l3_encoder_init() function within the mpeg_l3_encode.c file.

Record: AZL-74855
Updated: 2026-11-02

OSVMGASA-2026-0215 No score

Updated libsndfile packages fix security vulnerabilities

CVE-2025-52194 A buffer overflow vulnerability exists in libsndfile version 1.2.2 and potentially earlier versions when processing malformed IRCAM audio files. The vulnerability occurs in the ircam_read_header function at src/ircam.c:164 during sample rate processing, leading to memory corruption and potential code execution. CVE-2025-56226 Libsndfile <=1.2.2 contains a memory leak vulnerability in the mpeg_l3_encoder_init() function within the mpeg_l3_encode.c file. CVE-2026-37555 An issue was discovered in libsndfile 1.2.2 IMA ADPCM codec. The AIFF code path (line 241) was fixed with (sf_count_t) cast, but the WAV code path (line 235) and close path (line 167) were not. When samplesperblock (int) * blocks (int) exceeds INT_MAX, the 32-bit multiplication overflows before being assigned to sf.frames (sf_count_t/int64). With samplesperblock=50000 and blocks=50000, the product 2500000000 overflows to -1794967296. This causes incorrect frame count leading to heap buffer overflow or denial of service. Both values come from the WAV file header and are attacker-controlled. This issue was discovered after an incomplete fix for CVE-2022-33065.

Record: MGASA-2026-0215
Updated: 2026-11-02

OSVopenSUSE-SU-2026:10061-1 No score

libsndfile-devel-1.2.2-4.1 on GA media

These are all security issues fixed in the libsndfile-devel-1.2.2-4.1 package on the GA media of openSUSE Tumbleweed.

Record: openSUSE-SU-2026:10061-1
Updated: 2026-11-02

OSVopenSUSE-SU-2026:20787-1 No score

Security update for libsndfile

This update for libsndfile fixes the following issues

CVE-2025-52194: buffer overflow in the ircam_read_header function of file src/ircam.c when processing malformed IRCAM audio files (bsc#1248458).
CVE-2025-56226: memory leak in the mpeg_l3_encoder_init() function of mpeg_l3_encode.c (bsc#1256702).
CVE-2026-37555: IMA-ADPCM integer overflow (bsc#1263695).

Changes for libsndfile:

Record: openSUSE-SU-2026:20787-1
Updated: 2026-11-02

OSVSUSE-SU-2026:21826-1 No score

Security update for libsndfile

This update for libsndfile fixes the following issues

CVE-2025-52194: buffer overflow in the ircam_read_header function of file src/ircam.c when processing malformed IRCAM audio files (bsc#1248458).
CVE-2025-56226: memory leak in the mpeg_l3_encoder_init() function of mpeg_l3_encode.c (bsc#1256702).
CVE-2026-37555: IMA-ADPCM integer overflow (bsc#1263695).

Changes for libsndfile:

Record: SUSE-SU-2026:21826-1
Updated: 2026-11-02

Affected products

libsndfile project libsndfile

Affected packages

Affected packages
Package	Affected	Fixed
`libsndfile` Azure Linux:3	before 1.2.2-4	1.2.2-4
`libsndfile` Debian:12	All versions, plus listed versions 1.2.0-11.2.0-1+deb12u11.2.2-11.2.2-1+hurd.11.2.2-1+hurd.2 Show 4 moreShow less 1.2.2-1+hurd.31.2.2-21.2.2-31.2.2-4	None known
`libsndfile` Debian:13	before 1.2.2-2+deb13u1, plus listed versions 1.2.2-2	1.2.2-2+deb13u1
`libsndfile` Debian:14	before 1.2.2-4, plus listed versions 1.2.2-21.2.2-3	1.2.2-4
`libsndfile` Mageia:9	before 1.2.0-3.3.mga9	1.2.0-3.3.mga9
`libsndfile` openEuler:24.03-LTS	before 1.2.2-4.oe2403	1.2.2-4.oe2403
`libsndfile` openEuler:24.03-LTS-SP1	before 1.2.2-4.oe2403sp1	1.2.2-4.oe2403sp1
`libsndfile` openEuler:24.03-LTS-SP2	before 1.2.2-4.oe2403sp2	1.2.2-4.oe2403sp2
`libsndfile` openEuler:24.03-LTS-SP3	before 1.2.2-4.oe2403sp3	1.2.2-4.oe2403sp3
`libsndfile` Ubuntu:Pro:14.04:LTS	All versions, plus listed versions 1.0.25-7ubuntu11.0.25-7ubuntu21.0.25-7ubuntu2.11.0.25-7ubuntu2.21.0.25-7ubuntu2.2+esm11.0.25-7ubuntu2.2+esm21.0.25-7ubuntu2.2+esm31.0.25-7ubuntu2.2+esm4	None known

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Affected packages
Package	Affected	Fixed
`libsndfile` Ubuntu:Pro:16.04:LTS	All versions, plus listed versions 1.0.25-9.11.0.25-101.0.25-10ubuntu0.16.04.11.0.25-10ubuntu0.16.04.21.0.25-10ubuntu0.16.04.3 Show 4 moreShow less 1.0.25-10ubuntu0.16.04.3+esm11.0.25-10ubuntu0.16.04.3+esm21.0.25-10ubuntu0.16.04.3+esm31.0.25-10ubuntu0.16.04.3+esm4	None known
`libsndfile` Ubuntu:Pro:18.04:LTS	All versions, plus listed versions 1.0.28-41.0.28-4ubuntu0.18.04.11.0.28-4ubuntu0.18.04.21.0.28-4ubuntu0.18.04.2+esm11.0.28-4ubuntu0.18.04.2+esm2	None known
`libsndfile` Ubuntu:20.04:LTS	All versions, plus listed versions 1.0.28-61.0.28-71.0.28-7ubuntu0.11.0.28-7ubuntu0.21.0.28-7ubuntu0.3	None known
`libsndfile` Ubuntu:22.04:LTS	All versions, plus listed versions 1.0.31-21.0.31-2build11.0.31-2ubuntu0.11.0.31-2ubuntu0.2	None known
`libsndfile` Ubuntu:24.04:LTS	All versions, plus listed versions 1.2.2-11.2.2-1ubuntu21.2.2-1ubuntu31.2.2-1ubuntu41.2.2-1ubuntu51.2.2-1ubuntu5.24.04.1	None known
`libsndfile` Ubuntu:25.10	All versions, plus listed versions 1.2.2-2build11.2.2-3	None known
`libsndfile` Ubuntu:26.10	All versions, plus listed versions 1.2.2-4	None known
`libsndfile` Ubuntu:26.04:LTS	All versions, plus listed versions 1.2.2-31.2.2-4	None known
`libsndfile` openSUSE:Tumbleweed	before 1.2.2-4.1	1.2.2-4.1

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2025-56226 is a medium vulnerability (CVSS 5.3) in Libsndfile Project Libsndfile, published January 14, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.37%, the 31st percentile. Fixed in libsndfile 1.2.2-4.

References

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