CVE-2023-25586

Local variable `ch_type` in function `bfd_init_section_decompress_status` can be uninitialized

4.7 MediumFix available

A flaw was found in Binutils. A logic fail in the bfd_init_section_decompress_status function may lead to the use of an uninitialized variable that can cause a crash and local denial of service.

Attack profile

How easy it is to exploit

Attack vector: Local
Complexity: High
Privileges needed: None
User interaction: Required

What an attacker can affect

Confidentiality: None
Integrity: None
Availability: High

Exploit likelihood

0.35%Up 0.3 points since Sep 15, 2023

What each source reports

CVE List Score used 4.7

Local variable `ch_type` in function `bfd_init_section_decompress_status` can be uninitialized

A flaw was found in Binutils. A logic fail in the bfd_init_section_decompress_status function may lead to the use of an uninitialized variable that can cause a crash and local denial of service.

Record: CVE-2023-25586
CVSS 3.1: 4.7 MediumCVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness: CWE-457
Updated: 2026-11-02

EUVDEUVD-2023-29528 4.7

A flaw was found in Binutils. A logic fail in the bfd_init_section_decompress_status function may lead to the use of an uninitialized variable that can cause a crash and local denial of service.

Record: EUVD-2023-29528
CVSS 3.1: 4.7 MediumCVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated: 2026-11-03

GitHub AdvisoriesGHSA-gpjh-j7vh-fwmj 4.7

A flaw was found in Binutils. A logic fail in the bfd_init_section_decompress_status function may...

A flaw was found in Binutils. A logic fail in the bfd_init_section_decompress_status function may lead to the use of an uninitialized variable that can cause a crash and local denial of service.

Record: GHSA-gpjh-j7vh-fwmj
CVSS 3.1: 4.7 MediumCVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness: CWE-908
Updated: 2026-11-02

NVD 4.7

A flaw was found in Binutils. A logic fail in the bfd_init_section_decompress_status function may lead to the use of an uninitialized variable that can cause a crash and local denial of service.

Record: CVE-2023-25586
CVSS 3.1: 4.7 MediumCVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H
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-457, CWE-908
Updated: 2026-11-02

OSVBELL-CVE-2023-25586 5.5

Record: BELL-CVE-2023-25586
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

OSV 4.7

Local variable `ch_type` in function `bfd_init_section_decompress_status` can be uninitialized

A flaw was found in Binutils. A logic fail in the bfd_init_section_decompress_status function may lead to the use of an uninitialized variable that can cause a crash and local denial of service.

Record: CVE-2023-25586
CVSS 3.1: 4.7 MediumCVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness: CWE-457
Updated: 2026-11-02

OSVDEBIAN-CVE-2023-25586 5.5

A flaw was found in Binutils. A logic fail in the bfd_init_section_decompress_status function may lead to the use of an uninitialized variable that can cause a crash and local denial of service.

Record: DEBIAN-CVE-2023-25586
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

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`binutils` Alpaquita:23	2.39-r2 up to 2.40-r2	2.40-r2
`binutils` BellSoft Hardened Containers:23	2.39-r2 up to 2.40-r2	2.40-r2
`binutils` Debian:12	before 2.39.50.20221208-1	2.39.50.20221208-1
`binutils` Debian:13	before 2.39.50.20221208-1	2.39.50.20221208-1
`binutils` Debian:14	before 2.39.50.20221208-1	2.39.50.20221208-1

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases, published	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

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

In short

CVE-2023-25586 is a medium vulnerability (CVSS 4.7) in Gnu Binutils, published September 14, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.35%, the 28th percentile. Fixed in binutils 2.40-r2.

References

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