Re: [OE-core] [kirkstone][PATCH] ncurses: fix for CVE-2025-69720

["Yoann Congal" <yoann.congal@smile.fr>]

On Tue Apr 7, 2026 at 7:44 AM CEST, Hitendra Prajapati via lists.openembedded.org wrote:
> Pick relevant part of snapshot commit 20251213, see [1].
>
> That has:
> add a limit-check in infocmp -i option (report/example by Yixuan Cao).
>
> [1] https://invisible-island.net/ncurses/NEWS.html#index-t20251213
>
> References:
> 1. https://github.com/Cao-Wuhui/CVE-2025-69720
> 2. https://nvd.nist.gov/vuln/detail/CVE-2025-69720
> 3. https://access.redhat.com/errata/RHSA-2026:5913
>
> Signed-off-by: Hitendra Prajapati <hprajapati@mvista.com>
> ---

Hello,

Sorry, but this might come too late for kirkstone.
See "End of kirkstone LTS support"
https://lore.kernel.org/yocto/DH8I3C005I7I.EAFAABGT2FJL@smile.fr/T/#u
I will try to include it but no promises.

Regards,

>  .../ncurses/files/CVE-2025-69720.patch        | 42 +++++++++++++++++++
>  .../ncurses/ncurses_6.3+20220423.bb           |  1 +
>  2 files changed, 43 insertions(+)
>  create mode 100644 meta/recipes-core/ncurses/files/CVE-2025-69720.patch
>
> diff --git a/meta/recipes-core/ncurses/files/CVE-2025-69720.patch b/meta/recipes-core/ncurses/files/CVE-2025-69720.patch
> new file mode 100644
> index 0000000000..d570b2007a
> --- /dev/null
> +++ b/meta/recipes-core/ncurses/files/CVE-2025-69720.patch
> @@ -0,0 +1,42 @@
> +From 6f6db0e8fd14e40096a0ee6f8bdf32dedbd3fc9e Mon Sep 17 00:00:00 2001
> +From: Hitendra Prajapati <hprajapati@mvista.com>
> +Date: Mon, 6 Apr 2026 18:08:09 +0530
> +Subject: [PATCH] add limit-check in infocmp
> +
> +origin : https://invisible-island.net/archives/ncurses/6.5/ncurses-6.5-20251213.patch.gz
> +Refer: https://github.com/Cao-Wuhui/CVE-2025-69720
> +patch by : Thomas E. Dickey <dickey@invisible-island.net>
> +
> +CVE: CVE-2025-69720
> +Upstream-Status: Backport [https://github.com/ThomasDickey/ncurses-snapshots/commit/6f6db0e8fd14e40096a0ee6f8bdf32dedbd3fc9e]
> +Signed-off-by: Hitendra Prajapati <hprajapati@mvista.com>
> +---
> + progs/infocmp.c | 5 +++--
> + 1 file changed, 3 insertions(+), 2 deletions(-)
> +
> +diff --git a/progs/infocmp.c b/progs/infocmp.c
> +index 0ee0b958..538aca5a 100644
> +--- a/progs/infocmp.c
> ++++ b/progs/infocmp.c
> +@@ -816,7 +816,7 @@ lookup_params(const assoc * table, char *dst, char *src)
> + static void
> + analyze_string(const char *name, const char *cap, TERMTYPE2 *tp)
> + {
> +-    char buf2[MAX_TERMINFO_LENGTH];
> ++    char buf2[MAX_TERMINFO_LENGTH + 1];
> +     const char *sp;
> +     const assoc *ap;
> +     int tp_lines = tp->Numbers[2];
> +@@ -846,7 +846,8 @@ analyze_string(const char *name, const char *cap, TERMTYPE2 *tp)
> + 	    if (VALID_STRING(cp) &&
> + 		cp[0] != '\0' &&
> + 		cp != cap) {
> +-		len = strlen(cp);
> ++		if ((len = strlen(cp)) > MAX_TERMINFO_LENGTH)
> ++		    len = MAX_TERMINFO_LENGTH;
> + 		_nc_STRNCPY(buf2, sp, len);
> + 		buf2[len] = '\0';
> + 
> +-- 
> +2.50.1
> +
> diff --git a/meta/recipes-core/ncurses/ncurses_6.3+20220423.bb b/meta/recipes-core/ncurses/ncurses_6.3+20220423.bb
> index 68a845f27c..15ea2756cd 100644
> --- a/meta/recipes-core/ncurses/ncurses_6.3+20220423.bb
> +++ b/meta/recipes-core/ncurses/ncurses_6.3+20220423.bb
> @@ -7,6 +7,7 @@ SRC_URI += "file://0001-tic-hang.patch \
>             file://CVE-2023-50495.patch \
>             file://CVE-2023-45918.patch \
>             file://CVE-2025-6141.patch \
> +           file://CVE-2025-69720.patch \
>             "
>  # commit id corresponds to the revision in package version
>  SRCREV = "a0bc708bc6954b5d3c0a38d92b683c3ec3135260"


-- 
Yoann Congal
Smile ECS