CVE-2026-59850
ADVISORY - debianSummary
A flaw was found in libssh. If data packets are processed after a channel is closed, channel data callbacks can be invoked after the associated data has already been freed, leading to crashes or possible use-after-free conditions.
- libssh 0.12.1-1 (bug https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1142537) https://www.libssh.org/2026/07/21/libssh-0-12-1-and-0-11-5-security-releases/ https://www.libssh.org/security/advisories/CVE-2026-59850.txt Fixed by: https://git.libssh.org/projects/libssh.git/commit/?id=7dfabb1fd213196c4912c314b418ff36c882ea54 (libssh-0.12.1) Fixed by: https://git.libssh.org/projects/libssh.git/commit/?id=7edddfc580970c821b1bd866c5f88854a8bfd70d (libssh-0.12.1)
Debian
CREATED
UPDATED
ADVISORY IDCVE-2026-59850
EXPLOITABILITY SCORE
-
EXPLOITS FOUND
-
COMMON WEAKNESS ENUMERATION (CWE)-
| Package | Type | OS Name | OS Version | Affected Ranges | Fix Versions |
|---|---|---|---|---|---|
| debian/libssh | deb | debian | 14 | <0.12.1-1 | 0.12.1-1 |
| debian/libssh | deb | debian | unstable | <0.12.1-1 | 0.12.1-1 |
| debian/libssh | deb | debian | 11 | >0 | Not yet available |
| debian/libssh | deb | debian | 13 | <0.11.5-0+deb13u1 | 0.11.5-0+deb13u1 |
| debian/libssh | deb | debian | 12 | >0 | Not yet available |
Severity and metrics
No CVSS data available from this advisory.
Alpine
CREATED
UPDATED
ADVISORY IDCVE-2026-59850
EXPLOITABILITY SCORE
-
EXPLOITS FOUND
-
COMMON WEAKNESS ENUMERATION (CWE)-
Ubuntu
CREATED
UPDATED
ADVISORY IDCVE-2026-59850
EXPLOITABILITY SCORE
-
EXPLOITS FOUND
-
COMMON WEAKNESS ENUMERATION (CWE)-
CVSS SCORE
N/AmediumRed Hat
CREATED
UPDATED
ADVISORY IDCVE-2026-59850
EXPLOITABILITY SCORE
2.8
EXPLOITS FOUND
-
COMMON WEAKNESS ENUMERATION (CWE)