diff --git a/meta-webserver/recipes-httpd/nginx/files/CVE-2026-27784.patch b/meta-webserver/recipes-httpd/nginx/files/CVE-2026-27784.patch new file mode 100644 index 0000000000..41a8563c67 --- /dev/null +++ b/meta-webserver/recipes-httpd/nginx/files/CVE-2026-27784.patch @@ -0,0 +1,88 @@ +From b23ac73b00313d159a99636c21ef71b828781018 Mon Sep 17 00:00:00 2001 +From: Roman Arutyunyan +Date: Mon, 2 Mar 2026 21:12:34 +0400 +Subject: [PATCH] Mp4: fixed possible integer overflow on 32-bit platforms. + +Previously, a 32-bit overflow could happen while validating atom entries +count. This allowed processing of an invalid atom with entrires beyond +its boundaries with reads and writes outside of the allocated mp4 buffer. + +Reported by Prabhav Srinath (sprabhav7). + +CVE: CVE-2026-27784 +Upstream-Status: Backport [https://github.com/nginx/nginx/commit/b23ac73b00313d159a99636c21ef71b828781018] +Signed-off-by: Hitendra Prajapati +--- + src/http/modules/ngx_http_mp4_module.c | 14 +++++++------- + 1 file changed, 7 insertions(+), 7 deletions(-) + +diff --git a/src/http/modules/ngx_http_mp4_module.c b/src/http/modules/ngx_http_mp4_module.c +index 041ad26..a7f8be7 100644 +--- a/src/http/modules/ngx_http_mp4_module.c ++++ b/src/http/modules/ngx_http_mp4_module.c +@@ -2294,7 +2294,7 @@ ngx_http_mp4_read_stts_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size) + "mp4 time-to-sample entries:%uD", entries); + + if (ngx_mp4_atom_data_size(ngx_mp4_stts_atom_t) +- + entries * sizeof(ngx_mp4_stts_entry_t) > atom_data_size) ++ + (uint64_t) entries * sizeof(ngx_mp4_stts_entry_t) > atom_data_size) + { + ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0, + "\"%s\" mp4 stts atom too small", mp4->file.name.data); +@@ -2597,7 +2597,7 @@ ngx_http_mp4_read_stss_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size) + atom->last = atom_table; + + if (ngx_mp4_atom_data_size(ngx_http_mp4_stss_atom_t) +- + entries * sizeof(uint32_t) > atom_data_size) ++ + (uint64_t) entries * sizeof(uint32_t) > atom_data_size) + { + ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0, + "\"%s\" mp4 stss atom too small", mp4->file.name.data); +@@ -2802,7 +2802,7 @@ ngx_http_mp4_read_ctts_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size) + atom->last = atom_table; + + if (ngx_mp4_atom_data_size(ngx_mp4_ctts_atom_t) +- + entries * sizeof(ngx_mp4_ctts_entry_t) > atom_data_size) ++ + (uint64_t) entries * sizeof(ngx_mp4_ctts_entry_t) > atom_data_size) + { + ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0, + "\"%s\" mp4 ctts atom too small", mp4->file.name.data); +@@ -2984,7 +2984,7 @@ ngx_http_mp4_read_stsc_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size) + "sample-to-chunk entries:%uD", entries); + + if (ngx_mp4_atom_data_size(ngx_mp4_stsc_atom_t) +- + entries * sizeof(ngx_mp4_stsc_entry_t) > atom_data_size) ++ + (uint64_t) entries * sizeof(ngx_mp4_stsc_entry_t) > atom_data_size) + { + ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0, + "\"%s\" mp4 stsc atom too small", mp4->file.name.data); +@@ -3362,7 +3362,7 @@ ngx_http_mp4_read_stsz_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size) + + if (size == 0) { + if (ngx_mp4_atom_data_size(ngx_mp4_stsz_atom_t) +- + entries * sizeof(uint32_t) > atom_data_size) ++ + (uint64_t) entries * sizeof(uint32_t) > atom_data_size) + { + ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0, + "\"%s\" mp4 stsz atom too small", +@@ -3521,7 +3521,7 @@ ngx_http_mp4_read_stco_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size) + ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "chunks:%uD", entries); + + if (ngx_mp4_atom_data_size(ngx_mp4_stco_atom_t) +- + entries * sizeof(uint32_t) > atom_data_size) ++ + (uint64_t) entries * sizeof(uint32_t) > atom_data_size) + { + ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0, + "\"%s\" mp4 stco atom too small", mp4->file.name.data); +@@ -3737,7 +3737,7 @@ ngx_http_mp4_read_co64_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size) + ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "chunks:%uD", entries); + + if (ngx_mp4_atom_data_size(ngx_mp4_co64_atom_t) +- + entries * sizeof(uint64_t) > atom_data_size) ++ + (uint64_t) entries * sizeof(uint64_t) > atom_data_size) + { + ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0, + "\"%s\" mp4 co64 atom too small", mp4->file.name.data); +-- +2.50.1 + diff --git a/meta-webserver/recipes-httpd/nginx/nginx.inc b/meta-webserver/recipes-httpd/nginx/nginx.inc index 722e2508d4..05e3cab44d 100644 --- a/meta-webserver/recipes-httpd/nginx/nginx.inc +++ b/meta-webserver/recipes-httpd/nginx/nginx.inc @@ -28,6 +28,7 @@ SRC_URI = " \ file://CVE-2025-53859.patch \ file://CVE-2025-23419.patch \ file://CVE-2026-1642.patch \ + file://CVE-2026-27784.patch \ " inherit siteinfo update-rc.d useradd systemd