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fix(libssh2): CVE-2026-58051 #5

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9 changes: 9 additions & 0 deletions debian/changelog
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Original file line number Diff line number Diff line change
@@ -1,3 +1,12 @@
libssh2 (1.11.1-1deepin3) unstable; urgency=medium

* Fix CVE-2026-58051: fix potential arbitrary free in
libssh2_publickey_list_fetch() due to uninitialized list entry after
SSH2_REALLOC (upstream commit
a9758da45a52bc8c630ec9493804d0c6ea30b24a)

-- deepin-ci-robot <packages@deepin.org> Wed, 01 Jul 2026 13:40:18 +0800

libssh2 (1.11.1-1deepin2) unstable; urgency=medium

* Fix CVE-2026-7598: integer overflow in userauth_password
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18 changes: 18 additions & 0 deletions debian/patches/CVE-2026-58051.patch
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Original file line number Diff line number Diff line change
@@ -0,0 +1,18 @@
Description: publickey: fix potential arbitrary free in libssh2_publickey_list_fetch()
Due to uninitialized list entry. After SSH2_REALLOC, zero-initialize
the new entry before parsing populates it, preventing a cleanup path
from operating on uninitialized data.
Origin: upstream, https://github.com/libssh2/libssh2/commit/a9758da45a52bc8c630ec9493804d0c6ea30b24a
Bug: https://github.com/libssh2/libssh2/pull/2127
Last-Update: 2026-07-01

--- a/src/publickey.c
+++ b/src/publickey.c
@@ -905,6 +905,7 @@ int libssh2_publickey_list_fetch(LIBSSH2_PUBLICKEY *pkey,
goto err_exit;
}
list = newlist;
+ memset(&list[keys], 0, sizeof(list[keys]));
}
if(pkey->version == 1) {
unsigned long comment_len;
1 change: 1 addition & 0 deletions debian/patches/series
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Expand Up @@ -7,3 +7,4 @@
#maxpathlen.patch
#openssh-9.8.patch
CVE-2026-7598.patch
CVE-2026-58051.patch
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