Reference: https://nvd.nist.gov/vuln/detail/CVE-2026-66032 https://github.com/libssh2/libssh2/commit/5e4776146552d898b9c0e1b313cd093fa8dc92d0
libssh2 ptest results (qemux86-64): before: PASSED: 1 FAILED: 0 SKIPPED: 0 after: PASSED: 1 FAILED: 0 SKIPPED: 0 Signed-off-by: Jaipaul Cheernam <[email protected]> --- .../libssh2/libssh2/CVE-2026-66032.patch | 36 +++++++++++++++++++ .../recipes-support/libssh2/libssh2_1.11.1.bb | 1 + 2 files changed, 37 insertions(+) create mode 100644 meta/recipes-support/libssh2/libssh2/CVE-2026-66032.patch diff --git a/meta/recipes-support/libssh2/libssh2/CVE-2026-66032.patch b/meta/recipes-support/libssh2/libssh2/CVE-2026-66032.patch new file mode 100644 index 0000000000..15a5266485 --- /dev/null +++ b/meta/recipes-support/libssh2/libssh2/CVE-2026-66032.patch @@ -0,0 +1,36 @@ +From 352341aaebcf91ab16e7fcff158fef4a3b8c32f6 Mon Sep 17 00:00:00 2001 +From: Jaipaul Cheernam <[email protected]> +Date: Tue, 4 Aug 2026 12:32:31 +0000 +Subject: [PATCH] Prevent dangling pointer by nullifying data (#2180) + +Set data to NULL after freeing it to avoid dangling pointer. fixes +GHSA-px3w-7g75-hg7w. + +Credit: VladimirEliTokarev + +CVE: CVE-2026-66032 +Upstream-Status: Backport [https://github.com/libssh2/libssh2/commit/5e4776146552d898b9c0e1b313cd093fa8dc92d0] + +Backport adaptations: +- The upstream fix uses SSH2_FREE() which was renamed from + LIBSSH2_FREE() in newer libssh2. Context adjusted to match + the 1.11.1 codebase (different line numbers and surrounding + function/macro names). + +Signed-off-by: Jaipaul Cheernam <[email protected]> +--- + src/sftp.c | 1 + + 1 file changed, 1 insertion(+) + +diff --git a/src/sftp.c b/src/sftp.c +index 6ede3111..793f267c 100644 +--- a/src/sftp.c ++++ b/src/sftp.c +@@ -1279,6 +1279,7 @@ sftp_open(LIBSSH2_SFTP *sftp, const char *filename, + "got HANDLE FXOK")); + + LIBSSH2_FREE(session, data); ++ data = NULL; + + /* silly situation, but check for a HANDLE */ + rc = sftp_packet_require(sftp, SSH_FXP_HANDLE, diff --git a/meta/recipes-support/libssh2/libssh2_1.11.1.bb b/meta/recipes-support/libssh2/libssh2_1.11.1.bb index 32e1ad6c16..bd7d1f7b1d 100644 --- a/meta/recipes-support/libssh2/libssh2_1.11.1.bb +++ b/meta/recipes-support/libssh2/libssh2_1.11.1.bb @@ -16,6 +16,7 @@ SRC_URI = "http://www.libssh2.org/download/${BP}.tar.gz \ file://CVE-2025-15661-1.patch \ file://CVE-2025-15661-2.patch \ file://CVE-2025-15661-3.patch \ + file://CVE-2026-66032.patch \ " SRC_URI[sha256sum] = "d9ec76cbe34db98eec3539fe2c899d26b0c837cb3eb466a56b0f109cabf658f7"
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