Reference: https://nvd.nist.gov/vuln/detail/CVE-2026-66034 https://github.com/libssh2/libssh2/commit/a13bb6c773f0d55ad1628cede57e99804cd898d9
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-2026-66034.patch | 40 +++++++++++++++++++ .../recipes-support/libssh2/libssh2_1.11.1.bb | 1 + 2 files changed, 41 insertions(+) create mode 100644 meta/recipes-support/libssh2/libssh2/CVE-2026-66034.patch diff --git a/meta/recipes-support/libssh2/libssh2/CVE-2026-66034.patch b/meta/recipes-support/libssh2/libssh2/CVE-2026-66034.patch new file mode 100644 index 0000000000..906356baf2 --- /dev/null +++ b/meta/recipes-support/libssh2/libssh2/CVE-2026-66034.patch @@ -0,0 +1,40 @@ +From 16720054e0b3f02e36f31dd04add534d73d4a18d Mon Sep 17 00:00:00 2001 +From: Viktor Szakats <[email protected]> +Date: Sat, 4 Jul 2026 11:19:49 +0200 +Subject: [PATCH] publickey: fix potential OOB read in + `libssh2_publickey_list_fetch()` + +Reported-by: Vladimir Eli Tokarev +Fixes GHSA-w6g9-cpfp-22gc + +Closes #2202 + +Backport adaptations: +- The upstream fix uses ssh2_err() which is not available in libssh2 + 1.11.1. Replace with the equivalent _libssh2_error() call. + +CVE: CVE-2026-66034 +Upstream-Status: Backport [https://github.com/libssh2/libssh2/commit/a13bb6c773f0d55ad1628cede57e99804cd898d9] +Signed-off-by: Jaipaul Cheernam <[email protected]> +--- + src/publickey.c | 7 +++++++ + 1 file changed, 7 insertions(+) + +diff --git a/src/publickey.c b/src/publickey.c +index 9c9fa618..f3776d2d 100644 +--- a/src/publickey.c ++++ b/src/publickey.c +@@ -988,6 +988,13 @@ libssh2_publickey_list_fetch(LIBSSH2_PUBLICKEY * pkey, unsigned long *num_keys, + } + + if(comment_len) { ++ if(pkey->listFetch_s + comment_len > ++ pkey->listFetch_data + pkey->listFetch_data_len) { ++ _libssh2_error(session, LIBSSH2_ERROR_BUFFER_TOO_SMALL, ++ "ListFetch data too short"); ++ goto err_exit; ++ } ++ + list[keys].num_attrs = 1; + list[keys].attrs = + LIBSSH2_ALLOC(session, diff --git a/meta/recipes-support/libssh2/libssh2_1.11.1.bb b/meta/recipes-support/libssh2/libssh2_1.11.1.bb index 7e320ed0f8..54022aa879 100644 --- a/meta/recipes-support/libssh2/libssh2_1.11.1.bb +++ b/meta/recipes-support/libssh2/libssh2_1.11.1.bb @@ -17,6 +17,7 @@ SRC_URI = "http://www.libssh2.org/download/${BP}.tar.gz \ file://CVE-2025-15661-2.patch \ file://CVE-2025-15661-3.patch \ file://CVE-2026-66033.patch \ + file://CVE-2026-66034.patch \ " SRC_URI[sha256sum] = "d9ec76cbe34db98eec3539fe2c899d26b0c837cb3eb466a56b0f109cabf658f7"
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