ALPINE-CVE-2025-26465

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Source
https://security.alpinelinux.org/vuln/CVE-2025-26465
Import Source
https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2025-26465.json
JSON Data
https://api.osv.dev/v1/vulns/ALPINE-CVE-2025-26465
Upstream
Published
2025-02-18T19:15:29.230Z
Modified
2025-12-03T22:58:33.318649Z
Severity
  • 6.8 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N CVSS Calculator
Summary
[none]
Details

A vulnerability was found in OpenSSH when the VerifyHostKeyDNS option is enabled. A machine-in-the-middle attack can be performed by a malicious machine impersonating a legit server. This issue occurs due to how OpenSSH mishandles error codes in specific conditions when verifying the host key. For an attack to be considered successful, the attacker needs to manage to exhaust the client's memory resource first, turning the attack complexity high.

References

Affected packages

Alpine:v3.18

openssh

Package

Name
openssh
Purl
pkg:apk/alpine/openssh?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
9.3_p2-r3

Affected versions

5.*

5.1p1-r0
5.1_p1-r1
5.1_p1-r2
5.2_p1-r0
5.2_p1-r1
5.2_p1-r2
5.2_p1-r3
5.3_p1-r3
5.4_p1-r0
5.4_p1-r1
5.4_p1-r2
5.4_p1-r3
5.5_p1-r0
5.6_p1-r0
5.6_p1-r1
5.8_p1-r0
5.8_p1-r1
5.8_p1-r2
5.8_p2-r0
5.8_p2-r1
5.8_p2-r2
5.9_p1-r0
5.9_p1-r1
5.9_p1-r2

6.*

6.0_p1-r0
6.1_p1-r0
6.1_p1-r1
6.1_p1-r2
6.2_p1-r0
6.2_p2-r0
6.2_p2-r1
6.2_p2-r2
6.3_p1-r0
6.3_p1-r1
6.3_p1-r2
6.4_p1-r0
6.4_p1-r1
6.6_p1-r0
6.6_p1-r1
6.6_p1-r2
6.6_p1-r3
6.6_p1-r4
6.6_p1-r5
6.6_p1-r6
6.7_p1-r0
6.8_p1-r0
6.8_p1-r1
6.8_p1-r2
6.9_p1-r0
6.9_p1-r1
6.9_p1-r2
6.9_p1-r3
6.9_p1-r4
6.9_p1-r5

7.*

7.1_p1-r0
7.1_p1-r1
7.1_p2-r0
7.2_p1-r0
7.2_p2-r0
7.2_p2-r1
7.3_p1-r0
7.3_p1-r1
7.3_p1-r2
7.4_p1-r0
7.4_p1-r1
7.4_p1-r2
7.5_p1-r0
7.5_p1-r1
7.5_p1-r2
7.5_p1-r3
7.5_p1-r4
7.5_p1-r5
7.5_p1-r6
7.5_p1-r7
7.5_p1-r8
7.6_p1-r0
7.6_p1-r1
7.7_p1-r0
7.7_p1-r1
7.7_p1-r2
7.7_p1-r3
7.7_p1-r4
7.8_p1-r0
7.9_p1-r0
7.9_p1-r1
7.9_p1-r2
7.9_p1-r3
7.9_p1-r4
7.9_p1-r5

8.*

8.0_p1-r0
8.0_p1-r1
8.0_p1-r2
8.1_p1-r0
8.2_p1-r0
8.3_p1-r0
8.4_p1-r0
8.4_p1-r1
8.4_p1-r2
8.4_p1-r3
8.5_p1-r0
8.5_p1-r1
8.5_p1-r2
8.6_p1-r0
8.6_p1-r1
8.6_p1-r2
8.6_p1-r3
8.6_p1-r4
8.8_p1-r0
8.8_p1-r1
8.8_p1-r2
8.8_p1-r3
8.8_p1-r4
8.9_p1-r0

9.*

9.0_p1-r0
9.0_p1-r1
9.0_p1-r2
9.0_p1-r3
9.0_p1-r4
9.1_p1-r0
9.1_p1-r1
9.2_p1-r0
9.2_p1-r1
9.2_p1-r2
9.2_p1-r3
9.2_p1-r4
9.3_p1-r0
9.3_p1-r1
9.3_p1-r2
9.3_p1-r3
9.3_p2-r0
9.3_p2-r1
9.3_p2-r2

Alpine:v3.19

openssh

Package

Name
openssh
Purl
pkg:apk/alpine/openssh?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
9.6_p1-r2

Affected versions

5.*

5.1p1-r0
5.1_p1-r1
5.1_p1-r2
5.2_p1-r0
5.2_p1-r1
5.2_p1-r2
5.2_p1-r3
5.3_p1-r3
5.4_p1-r0
5.4_p1-r1
5.4_p1-r2
5.4_p1-r3
5.5_p1-r0
5.6_p1-r0
5.6_p1-r1
5.8_p1-r0
5.8_p1-r1
5.8_p1-r2
5.8_p2-r0
5.8_p2-r1
5.8_p2-r2
5.9_p1-r0
5.9_p1-r1
5.9_p1-r2

6.*

6.0_p1-r0
6.1_p1-r0
6.1_p1-r1
6.1_p1-r2
6.2_p1-r0
6.2_p2-r0
6.2_p2-r1
6.2_p2-r2
6.3_p1-r0
6.3_p1-r1
6.3_p1-r2
6.4_p1-r0
6.4_p1-r1
6.6_p1-r0
6.6_p1-r1
6.6_p1-r2
6.6_p1-r3
6.6_p1-r4
6.6_p1-r5
6.6_p1-r6
6.7_p1-r0
6.8_p1-r0
6.8_p1-r1
6.8_p1-r2
6.9_p1-r0
6.9_p1-r1
6.9_p1-r2
6.9_p1-r3
6.9_p1-r4
6.9_p1-r5

7.*

7.1_p1-r0
7.1_p1-r1
7.1_p2-r0
7.2_p1-r0
7.2_p2-r0
7.2_p2-r1
7.3_p1-r0
7.3_p1-r1
7.3_p1-r2
7.4_p1-r0
7.4_p1-r1
7.4_p1-r2
7.5_p1-r0
7.5_p1-r1
7.5_p1-r2
7.5_p1-r3
7.5_p1-r4
7.5_p1-r5
7.5_p1-r6
7.5_p1-r7
7.5_p1-r8
7.6_p1-r0
7.6_p1-r1
7.7_p1-r0
7.7_p1-r1
7.7_p1-r2
7.7_p1-r3
7.7_p1-r4
7.8_p1-r0
7.9_p1-r0
7.9_p1-r1
7.9_p1-r2
7.9_p1-r3
7.9_p1-r4
7.9_p1-r5

8.*

8.0_p1-r0
8.0_p1-r1
8.0_p1-r2
8.1_p1-r0
8.2_p1-r0
8.3_p1-r0
8.4_p1-r0
8.4_p1-r1
8.4_p1-r2
8.4_p1-r3
8.5_p1-r0
8.5_p1-r1
8.5_p1-r2
8.6_p1-r0
8.6_p1-r1
8.6_p1-r2
8.6_p1-r3
8.6_p1-r4
8.8_p1-r0
8.8_p1-r1
8.8_p1-r2
8.8_p1-r3
8.8_p1-r4
8.9_p1-r0

9.*

9.0_p1-r0
9.0_p1-r1
9.0_p1-r2
9.0_p1-r3
9.0_p1-r4
9.1_p1-r0
9.1_p1-r1
9.2_p1-r0
9.2_p1-r1
9.2_p1-r2
9.2_p1-r3
9.2_p1-r4
9.3_p1-r0
9.3_p1-r1
9.3_p1-r2
9.3_p1-r3
9.3_p1-r4
9.3_p1-r5
9.3_p1-r6
9.3_p1-r7
9.3_p2-r0
9.3_p2-r1
9.3_p2-r2
9.4_p1-r0
9.5_p1-r0
9.6_p1-r0
9.6_p1-r1

Alpine:v3.20

openssh

Package

Name
openssh
Purl
pkg:apk/alpine/openssh?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
9.7_p1-r5

Affected versions

5.*

5.1p1-r0
5.1_p1-r1
5.1_p1-r2
5.2_p1-r0
5.2_p1-r1
5.2_p1-r2
5.2_p1-r3
5.3_p1-r3
5.4_p1-r0
5.4_p1-r1
5.4_p1-r2
5.4_p1-r3
5.5_p1-r0
5.6_p1-r0
5.6_p1-r1
5.8_p1-r0
5.8_p1-r1
5.8_p1-r2
5.8_p2-r0
5.8_p2-r1
5.8_p2-r2
5.9_p1-r0
5.9_p1-r1
5.9_p1-r2

6.*

6.0_p1-r0
6.1_p1-r0
6.1_p1-r1
6.1_p1-r2
6.2_p1-r0
6.2_p2-r0
6.2_p2-r1
6.2_p2-r2
6.3_p1-r0
6.3_p1-r1
6.3_p1-r2
6.4_p1-r0
6.4_p1-r1
6.6_p1-r0
6.6_p1-r1
6.6_p1-r2
6.6_p1-r3
6.6_p1-r4
6.6_p1-r5
6.6_p1-r6
6.7_p1-r0
6.8_p1-r0
6.8_p1-r1
6.8_p1-r2
6.9_p1-r0
6.9_p1-r1
6.9_p1-r2
6.9_p1-r3
6.9_p1-r4
6.9_p1-r5

7.*

7.1_p1-r0
7.1_p1-r1
7.1_p2-r0
7.2_p1-r0
7.2_p2-r0
7.2_p2-r1
7.3_p1-r0
7.3_p1-r1
7.3_p1-r2
7.4_p1-r0
7.4_p1-r1
7.4_p1-r2
7.5_p1-r0
7.5_p1-r1
7.5_p1-r2
7.5_p1-r3
7.5_p1-r4
7.5_p1-r5
7.5_p1-r6
7.5_p1-r7
7.5_p1-r8
7.6_p1-r0
7.6_p1-r1
7.7_p1-r0
7.7_p1-r1
7.7_p1-r2
7.7_p1-r3
7.7_p1-r4
7.8_p1-r0
7.9_p1-r0
7.9_p1-r1
7.9_p1-r2
7.9_p1-r3
7.9_p1-r4
7.9_p1-r5

8.*

8.0_p1-r0
8.0_p1-r1
8.0_p1-r2
8.1_p1-r0
8.2_p1-r0
8.3_p1-r0
8.4_p1-r0
8.4_p1-r1
8.4_p1-r2
8.4_p1-r3
8.5_p1-r0
8.5_p1-r1
8.5_p1-r2
8.6_p1-r0
8.6_p1-r1
8.6_p1-r2
8.6_p1-r3
8.6_p1-r4
8.8_p1-r0
8.8_p1-r1
8.8_p1-r2
8.8_p1-r3
8.8_p1-r4
8.9_p1-r0

9.*

9.0_p1-r0
9.0_p1-r1
9.0_p1-r2
9.0_p1-r3
9.0_p1-r4
9.1_p1-r0
9.1_p1-r1
9.2_p1-r0
9.2_p1-r1
9.2_p1-r2
9.2_p1-r3
9.2_p1-r4
9.3_p1-r0
9.3_p1-r1
9.3_p1-r2
9.3_p1-r3
9.3_p1-r4
9.3_p1-r5
9.3_p1-r6
9.3_p1-r7
9.3_p2-r0
9.3_p2-r1
9.3_p2-r2
9.4_p1-r0
9.5_p1-r0
9.6_p1-r0
9.7_p1-r0
9.7_p1-r1
9.7_p1-r2
9.7_p1-r3
9.7_p1-r4

Alpine:v3.21

openssh

Package

Name
openssh
Purl
pkg:apk/alpine/openssh?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
9.9_p2-r0

Affected versions

5.*

5.1p1-r0
5.1_p1-r1
5.1_p1-r2
5.2_p1-r0
5.2_p1-r1
5.2_p1-r2
5.2_p1-r3
5.3_p1-r3
5.4_p1-r0
5.4_p1-r1
5.4_p1-r2
5.4_p1-r3
5.5_p1-r0
5.6_p1-r0
5.6_p1-r1
5.8_p1-r0
5.8_p1-r1
5.8_p1-r2
5.8_p2-r0
5.8_p2-r1
5.8_p2-r2
5.9_p1-r0
5.9_p1-r1
5.9_p1-r2

6.*

6.0_p1-r0
6.1_p1-r0
6.1_p1-r1
6.1_p1-r2
6.2_p1-r0
6.2_p2-r0
6.2_p2-r1
6.2_p2-r2
6.3_p1-r0
6.3_p1-r1
6.3_p1-r2
6.4_p1-r0
6.4_p1-r1
6.6_p1-r0
6.6_p1-r1
6.6_p1-r2
6.6_p1-r3
6.6_p1-r4
6.6_p1-r5
6.6_p1-r6
6.7_p1-r0
6.8_p1-r0
6.8_p1-r1
6.8_p1-r2
6.9_p1-r0
6.9_p1-r1
6.9_p1-r2
6.9_p1-r3
6.9_p1-r4
6.9_p1-r5

7.*

7.1_p1-r0
7.1_p1-r1
7.1_p2-r0
7.2_p1-r0
7.2_p2-r0
7.2_p2-r1
7.3_p1-r0
7.3_p1-r1
7.3_p1-r2
7.4_p1-r0
7.4_p1-r1
7.4_p1-r2
7.5_p1-r0
7.5_p1-r1
7.5_p1-r2
7.5_p1-r3
7.5_p1-r4
7.5_p1-r5
7.5_p1-r6
7.5_p1-r7
7.5_p1-r8
7.6_p1-r0
7.6_p1-r1
7.7_p1-r0
7.7_p1-r1
7.7_p1-r2
7.7_p1-r3
7.7_p1-r4
7.8_p1-r0
7.9_p1-r0
7.9_p1-r1
7.9_p1-r2
7.9_p1-r3
7.9_p1-r4
7.9_p1-r5

8.*

8.0_p1-r0
8.0_p1-r1
8.0_p1-r2
8.1_p1-r0
8.2_p1-r0
8.3_p1-r0
8.4_p1-r0
8.4_p1-r1
8.4_p1-r2
8.4_p1-r3
8.5_p1-r0
8.5_p1-r1
8.5_p1-r2
8.6_p1-r0
8.6_p1-r1
8.6_p1-r2
8.6_p1-r3
8.6_p1-r4
8.8_p1-r0
8.8_p1-r1
8.8_p1-r2
8.8_p1-r3
8.8_p1-r4
8.9_p1-r0

9.*

9.0_p1-r0
9.0_p1-r1
9.0_p1-r2
9.0_p1-r3
9.0_p1-r4
9.1_p1-r0
9.1_p1-r1
9.2_p1-r0
9.2_p1-r1
9.2_p1-r2
9.2_p1-r3
9.2_p1-r4
9.3_p1-r0
9.3_p1-r1
9.3_p1-r2
9.3_p1-r3
9.3_p1-r4
9.3_p1-r5
9.3_p1-r6
9.3_p1-r7
9.3_p2-r0
9.3_p2-r1
9.3_p2-r2
9.4_p1-r0
9.5_p1-r0
9.6_p1-r0
9.7_p1-r0
9.7_p1-r1
9.7_p1-r2
9.7_p1-r3
9.8_p1-r0
9.8_p1-r1
9.9_p1-r0
9.9_p1-r1
9.9_p1-r2

Alpine:v3.22

openssh

Package

Name
openssh
Purl
pkg:apk/alpine/openssh?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
9.9_p2-r0

Affected versions

5.*

5.1p1-r0
5.1_p1-r1
5.1_p1-r2
5.2_p1-r0
5.2_p1-r1
5.2_p1-r2
5.2_p1-r3
5.3_p1-r3
5.4_p1-r0
5.4_p1-r1
5.4_p1-r2
5.4_p1-r3
5.5_p1-r0
5.6_p1-r0
5.6_p1-r1
5.8_p1-r0
5.8_p1-r1
5.8_p1-r2
5.8_p2-r0
5.8_p2-r1
5.8_p2-r2
5.9_p1-r0
5.9_p1-r1
5.9_p1-r2

6.*

6.0_p1-r0
6.1_p1-r0
6.1_p1-r1
6.1_p1-r2
6.2_p1-r0
6.2_p2-r0
6.2_p2-r1
6.2_p2-r2
6.3_p1-r0
6.3_p1-r1
6.3_p1-r2
6.4_p1-r0
6.4_p1-r1
6.6_p1-r0
6.6_p1-r1
6.6_p1-r2
6.6_p1-r3
6.6_p1-r4
6.6_p1-r5
6.6_p1-r6
6.7_p1-r0
6.8_p1-r0
6.8_p1-r1
6.8_p1-r2
6.9_p1-r0
6.9_p1-r1
6.9_p1-r2
6.9_p1-r3
6.9_p1-r4
6.9_p1-r5

7.*

7.1_p1-r0
7.1_p1-r1
7.1_p2-r0
7.2_p1-r0
7.2_p2-r0
7.2_p2-r1
7.3_p1-r0
7.3_p1-r1
7.3_p1-r2
7.4_p1-r0
7.4_p1-r1
7.4_p1-r2
7.5_p1-r0
7.5_p1-r1
7.5_p1-r2
7.5_p1-r3
7.5_p1-r4
7.5_p1-r5
7.5_p1-r6
7.5_p1-r7
7.5_p1-r8
7.6_p1-r0
7.6_p1-r1
7.7_p1-r0
7.7_p1-r1
7.7_p1-r2
7.7_p1-r3
7.7_p1-r4
7.8_p1-r0
7.9_p1-r0
7.9_p1-r1
7.9_p1-r2
7.9_p1-r3
7.9_p1-r4
7.9_p1-r5

8.*

8.0_p1-r0
8.0_p1-r1
8.0_p1-r2
8.1_p1-r0
8.2_p1-r0
8.3_p1-r0
8.4_p1-r0
8.4_p1-r1
8.4_p1-r2
8.4_p1-r3
8.5_p1-r0
8.5_p1-r1
8.5_p1-r2
8.6_p1-r0
8.6_p1-r1
8.6_p1-r2
8.6_p1-r3
8.6_p1-r4
8.8_p1-r0
8.8_p1-r1
8.8_p1-r2
8.8_p1-r3
8.8_p1-r4
8.9_p1-r0

9.*

9.0_p1-r0
9.0_p1-r1
9.0_p1-r2
9.0_p1-r3
9.0_p1-r4
9.1_p1-r0
9.1_p1-r1
9.2_p1-r0
9.2_p1-r1
9.2_p1-r2
9.2_p1-r3
9.2_p1-r4
9.3_p1-r0
9.3_p1-r1
9.3_p1-r2
9.3_p1-r3
9.3_p1-r4
9.3_p1-r5
9.3_p1-r6
9.3_p1-r7
9.3_p2-r0
9.3_p2-r1
9.3_p2-r2
9.4_p1-r0
9.5_p1-r0
9.6_p1-r0
9.7_p1-r0
9.7_p1-r1
9.7_p1-r2
9.7_p1-r3
9.8_p1-r0
9.8_p1-r1
9.9_p1-r0
9.9_p1-r1
9.9_p1-r2

Alpine:v3.23

openssh

Package

Name
openssh
Purl
pkg:apk/alpine/openssh?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
9.9_p2-r0

Affected versions

5.*

5.1p1-r0
5.1_p1-r1
5.1_p1-r2
5.2_p1-r0
5.2_p1-r1
5.2_p1-r2
5.2_p1-r3
5.3_p1-r3
5.4_p1-r0
5.4_p1-r1
5.4_p1-r2
5.4_p1-r3
5.5_p1-r0
5.6_p1-r0
5.6_p1-r1
5.8_p1-r0
5.8_p1-r1
5.8_p1-r2
5.8_p2-r0
5.8_p2-r1
5.8_p2-r2
5.9_p1-r0
5.9_p1-r1
5.9_p1-r2

6.*

6.0_p1-r0
6.1_p1-r0
6.1_p1-r1
6.1_p1-r2
6.2_p1-r0
6.2_p2-r0
6.2_p2-r1
6.2_p2-r2
6.3_p1-r0
6.3_p1-r1
6.3_p1-r2
6.4_p1-r0
6.4_p1-r1
6.6_p1-r0
6.6_p1-r1
6.6_p1-r2
6.6_p1-r3
6.6_p1-r4
6.6_p1-r5
6.6_p1-r6
6.7_p1-r0
6.8_p1-r0
6.8_p1-r1
6.8_p1-r2
6.9_p1-r0
6.9_p1-r1
6.9_p1-r2
6.9_p1-r3
6.9_p1-r4
6.9_p1-r5

7.*

7.1_p1-r0
7.1_p1-r1
7.1_p2-r0
7.2_p1-r0
7.2_p2-r0
7.2_p2-r1
7.3_p1-r0
7.3_p1-r1
7.3_p1-r2
7.4_p1-r0
7.4_p1-r1
7.4_p1-r2
7.5_p1-r0
7.5_p1-r1
7.5_p1-r2
7.5_p1-r3
7.5_p1-r4
7.5_p1-r5
7.5_p1-r6
7.5_p1-r7
7.5_p1-r8
7.6_p1-r0
7.6_p1-r1
7.7_p1-r0
7.7_p1-r1
7.7_p1-r2
7.7_p1-r3
7.7_p1-r4
7.8_p1-r0
7.9_p1-r0
7.9_p1-r1
7.9_p1-r2
7.9_p1-r3
7.9_p1-r4
7.9_p1-r5

8.*

8.0_p1-r0
8.0_p1-r1
8.0_p1-r2
8.1_p1-r0
8.2_p1-r0
8.3_p1-r0
8.4_p1-r0
8.4_p1-r1
8.4_p1-r2
8.4_p1-r3
8.5_p1-r0
8.5_p1-r1
8.5_p1-r2
8.6_p1-r0
8.6_p1-r1
8.6_p1-r2
8.6_p1-r3
8.6_p1-r4
8.8_p1-r0
8.8_p1-r1
8.8_p1-r2
8.8_p1-r3
8.8_p1-r4
8.9_p1-r0

9.*

9.0_p1-r0
9.0_p1-r1
9.0_p1-r2
9.0_p1-r3
9.0_p1-r4
9.1_p1-r0
9.1_p1-r1
9.2_p1-r0
9.2_p1-r1
9.2_p1-r2
9.2_p1-r3
9.2_p1-r4
9.3_p1-r0
9.3_p1-r1
9.3_p1-r2
9.3_p1-r3
9.3_p1-r4
9.3_p1-r5
9.3_p1-r6
9.3_p1-r7
9.3_p2-r0
9.3_p2-r1
9.3_p2-r2
9.4_p1-r0
9.5_p1-r0
9.6_p1-r0
9.7_p1-r0
9.7_p1-r1
9.7_p1-r2
9.7_p1-r3
9.8_p1-r0
9.8_p1-r1
9.9_p1-r0
9.9_p1-r1
9.9_p1-r2