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CVE-2023-45680

Null pointer dereference in vorbis_deinit in stb_vorbis

5.3 MediumFix available

stb_vorbis is a single file MIT licensed library for processing ogg vorbis files. A crafted file may trigger memory allocation failure in start_decoder. In that case the function returns early, the f->comment_list is set to NULL, but f->comment_list_length is not reset. Later in vorbis_deinit it tries to dereference the NULL pointer. This issue may lead to denial of service.

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

0.56%Up 0.5 points since Oct 21, 2023
90%50%10%1%

What each source reports

CVE List Score used 5.3

Null pointer dereference in vorbis_deinit in stb_vorbis

stb_vorbis is a single file MIT licensed library for processing ogg vorbis files. A crafted file may trigger memory allocation failure in start_decoder. In that case the function returns early, the f->comment_list is set to NULL, but f->comment_list_length is not reset. Later in vorbis_deinit it tries to dereference the NULL pointer. This issue may lead to denial of service.

Record
CVE-2023-45680
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-476
Updated
2026-11-02
EUVDEUVD-2023-49970 5.3

stb_vorbis is a single file MIT licensed library for processing ogg vorbis files. A crafted file may trigger memory allocation failure in start_decoder. In that case the function returns early, the f->comment_list is set to NULL, but f->comment_list_length is not reset. Later in vorbis_deinit it tries to dereference the NULL pointer. This issue may lead to denial of service.

Record
EUVD-2023-49970
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
2026-11-03
NVD 5.3

stb_vorbis is a single file MIT licensed library for processing ogg vorbis files. A crafted file may trigger memory allocation failure in start_decoder. In that case the function returns early, the f->comment_list is set to NULL, but f->comment_list_length is not reset. Later in vorbis_deinit it tries to dereference the NULL pointer. This issue may lead to denial of service.

Record
CVE-2023-45680
CVSS 3.1
5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CVSS 3.1
5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness
CWE-476
Updated
2026-11-02
OSV 5.3

Null pointer dereference in vorbis_deinit in stb_vorbis

stb_vorbis is a single file MIT licensed library for processing ogg vorbis files. A crafted file may trigger memory allocation failure in start_decoder. In that case the function returns early, the f->comment_list is set to NULL, but f->comment_list_length is not reset. Later in vorbis_deinit it tries to dereference the NULL pointer. This issue may lead to denial of service.

Record
CVE-2023-45680
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-476
Updated
2026-11-02
OSVDEBIAN-CVE-2023-45680 5.5

stb_vorbis is a single file MIT licensed library for processing ogg vorbis files. A crafted file may trigger memory allocation failure in start_decoder. In that case the function returns early, the f->comment_list is set to NULL, but f->comment_list_length is not reset. Later in vorbis_deinit it tries to dereference the NULL pointer. This issue may lead to denial of service.

Record
DEBIAN-CVE-2023-45680
CVSS 3.1
5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVUBUNTU-CVE-2023-45680 5.3

stb_vorbis is a single file MIT licensed library for processing ogg vorbis files. A crafted file may trigger memory allocation failure in start_decoder. In that case the function returns early, the f->comment_list is set to NULL, but f->comment_list_length is not reset. Later in vorbis_deinit it tries to dereference the NULL pointer. This issue may lead to denial of service.

Record
UBUNTU-CVE-2023-45680
CVSS 3.1
5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CVSS 3.1
5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVMGASA-2026-0191 No score

Updated libxmp packages fix security vulnerabilities

CVE-2023-45679: Attempt to free an uninitialized memory pointer in vorbis_deinit() CVE-2023-45680: Null pointer dereference in vorbis_deinit() CVE-2023-45681: Out of bounds heap buffer write CVE-2023-45676: Multi-byte write heap buffer overflow in start_decoder() CVE-2023-45677: Heap buffer out of bounds write in start_decoder() CVE-2023-45682: Wild address read in vorbis_decode_packet_rest() CVE-2025-47256 stack-based buffer overflow in depack_pha in loaders/prowizard/pha.c via a malformed Pha format tracker module in a .mod file.

Record
MGASA-2026-0191
Updated
2026-11-02
OSVopenSUSE-SU-2025:0037-1 No score

Security update for SDL2_sound

This update for SDL2_sound fixes the following issues:

  • Update to release 2.0.4:

    • Update bundled stb_vorbis to address CVE-2023-45676, CVE-2023-45677, CVE-2023-45679, CVE-2023-45680, CVE-2023-45681, CVE-2023-45682.

  • Update to release 2.0.2

    • No further changes from the last snapshot 2.0.1+g60
Record
openSUSE-SU-2025:0037-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
libstb
Debian:12
 All versions, plus listed versions
0.0~git20220908.8b5f1f3+ds-10.0~git20230129.5736b15+ds-10.0~git20230129.5736b15+ds-1.10.0~git20230129.5736b15+ds-1.1~exp10.0~git20230129.5736b15+ds-1.20.0~git20240715.f7f20f39fe4f+ds-10.0~git20241109.5c20573+ds-10.0~git20250907.fede005+ds-1
 None known
libstb
Debian:13
 All versions, plus listed versions
0.0~git20241109.5c20573+ds-10.0~git20250907.fede005+ds-1
 None known
libstb
Debian:14
 All versions, plus listed versions
0.0~git20241109.5c20573+ds-10.0~git20250907.fede005+ds-1
 None known
libxmp
Mageia:9
 before 4.5.0-2.1.mga9
4.5.0-2.1.mga9
libstb
Ubuntu:20.04:LTS
 All versions, plus listed versions
0.0~git20190817.1.052dce1-1
 None known
libstb
Ubuntu:22.04:LTS
 All versions, plus listed versions
0.0~git20200713.b42009b+ds-10.0~git20210910.af1a5bc+ds-1
 None known
libstb
Ubuntu:24.04:LTS
 All versions, plus listed versions
0.0~git20230129.5736b15+ds-10.0~git20230129.5736b15+ds-1.10.0~git20230129.5736b15+ds-1.2
 None known
libstb
Ubuntu:25.10
 All versions, plus listed versions
0.0~git20240715.f7f20f39fe4f+ds-10.0~git20241109.5c20573+ds-1
 None known
libstb
Ubuntu:26.10
 All versions, plus listed versions
0.0~git20250907.fede005+ds-1
 None known
libstb
Ubuntu:26.04:LTS
 All versions, plus listed versions
0.0~git20241109.5c20573+ds-10.0~git20250907.fede005+ds-1
 None known
SDL2_sound
SUSE:Package Hub 15 SP6
 before 2.0.4-bp156.2.3.1
2.0.4-bp156.2.3.1
SDL2_sound
openSUSE:Leap 15.6
 before 2.0.4-bp156.2.3.1
2.0.4-bp156.2.3.1

History

History
RecordedChangedSources
aliases, publishedEUVD
first indexedCVE List, NVD, OSV

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

In short

CVE-2023-45680 is a medium vulnerability (CVSS 5.3) in Nothings Stb, published October 20, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.56%, the 46th percentile. Fixed in libxmp 4.5.0-2.1.mga9.

References

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