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[2a02:8440:b519:f416:8bed:8817:19fd:ccf7]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-49fe2730da9sm14251525e9.4.2026.09.23.02.11.35 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 23 Sep 2026 02:11:35 -0700 (PDT) From: Yoann Congal To: openembedded-core@lists.openembedded.org Subject: [OE-core][scarthgap 16/48] cpio: patch CVE-2026-66485 Date: Wed, 23 Sep 2026 11:10:18 +0200 Message-ID: <090d104c522f4d1c3b99ab29f8214a1e14c3e36e.1790154074.git.yoann.congal@smile.fr> X-Mailer: git-send-email 2.47.3 In-Reply-To: References: MIME-Version: 1.0 List-Id: X-Webhook-Received: from 45-33-107-173.ip.linodeusercontent.com [45.33.107.173] by aws-us-west-2-korg-lkml-1.web.codeaurora.org with HTTPS for ; Wed, 23 Sep 2026 09:11:45 -0000 X-Groupsio-URL: https://lists.openembedded.org/g/openembedded-core/message/246478 From: Peter Marko Pick patch mentioned in NVD CVE description. Signed-off-by: Peter Marko Signed-off-by: Richard Purdie (From OE-Core rev: c105fbf82e2f50b05dc680e0601bf0ea3198e58c) Signed-off-by: Peter Marko Signed-off-by: Yoann Congal --- meta/recipes-extended/cpio/cpio_2.15.bb | 1 + .../cpio/files/CVE-2026-66485.patch | 210 ++++++++++++++++++ 2 files changed, 211 insertions(+) create mode 100644 meta/recipes-extended/cpio/files/CVE-2026-66485.patch diff --git a/meta/recipes-extended/cpio/cpio_2.15.bb b/meta/recipes-extended/cpio/cpio_2.15.bb index a5c9b76da20..f4b562fdc2c 100644 --- a/meta/recipes-extended/cpio/cpio_2.15.bb +++ b/meta/recipes-extended/cpio/cpio_2.15.bb @@ -9,6 +9,7 @@ LIC_FILES_CHKSUM = "file://COPYING;md5=f27defe1e96c2e1ecd4e0c9be8967949" SRC_URI = "${GNU_MIRROR}/cpio/cpio-${PV}.tar.gz \ file://run-ptest \ file://test.sh \ + file://CVE-2026-66485.patch \ " SRC_URI[sha256sum] = "efa50ef983137eefc0a02fdb51509d624b5e3295c980aa127ceee4183455499e" diff --git a/meta/recipes-extended/cpio/files/CVE-2026-66485.patch b/meta/recipes-extended/cpio/files/CVE-2026-66485.patch new file mode 100644 index 00000000000..f9c0f48281f --- /dev/null +++ b/meta/recipes-extended/cpio/files/CVE-2026-66485.patch @@ -0,0 +1,210 @@ +From 3cd514031371d8aeeaf2048aa10103e02831aaa9 Mon Sep 17 00:00:00 2001 +From: Sergey Poznyakoff +Date: Fri, 1 May 2026 08:19:41 +0300 +Subject: [PATCH] Minor fixes + +* src/makepath.c: Don't use alloca. +* src/userspec.c: Likewise. + +CVE: CVE-2026-66485 +Upstream-Status: Backport [https://git.savannah.gnu.org/cgit/cpio.git/commit/?id=3cd514031371d8aeeaf2048aa10103e02831aaa9] +Signed-off-by: Peter Marko +--- + src/makepath.c | 31 ++++++++++++++--------- + src/userspec.c | 67 +++++++++++++++++++++++++------------------------- + 2 files changed, 53 insertions(+), 45 deletions(-) + +diff --git a/src/makepath.c b/src/makepath.c +index 35dbc73..c6329bf 100644 +--- a/src/makepath.c ++++ b/src/makepath.c +@@ -47,24 +47,19 @@ + Return 0 if ARGPATH exists as a directory with the proper + ownership and permissions when done, otherwise 1. */ + +-int +-make_path (char const *argpath, +- uid_t owner, +- gid_t group, +- const char *verbose_fmt_string) ++static int ++make_path0 (char *dirpath, ++ uid_t owner, ++ gid_t group, ++ const char *verbose_fmt_string) + { +- char *dirpath; /* A copy we can scribble NULs on. */ + struct stat stats; +- int retval = 0; + mode_t tmpmode; + mode_t invert_permissions; + int we_are_root = getuid () == 0; +- dirpath = alloca (strlen (argpath) + 1); +- +- strcpy (dirpath, argpath); + + if (stat (dirpath, &stats)) +- { ++ { + tmpmode = MODE_RWX & ~ newdir_umask; + invert_permissions = we_are_root ? 0 : MODE_WXUSR & ~ tmpmode; + +@@ -157,5 +152,19 @@ make_path (char const *argpath, + + } + ++ return 0; ++} ++ ++int ++make_path (char const *argpath, ++ uid_t owner, ++ gid_t group, ++ const char *verbose_fmt_string) ++{ ++ char *dirpath = xstrdup (argpath); ++ int retval = make_path0 (dirpath, owner, group, verbose_fmt_string); ++ free (dirpath); + return retval; + } ++ ++ +diff --git a/src/userspec.c b/src/userspec.c +index 2a2b324..1a2bfa0 100644 +--- a/src/userspec.c ++++ b/src/userspec.c +@@ -19,7 +19,6 @@ + /* Written by David MacKenzie . */ + + #include +-#include + #include + #include + #include +@@ -33,18 +32,6 @@ + # define endgrent() + #endif + +-/* Perform the equivalent of the statement `dest = strdup (src);', +- but obtaining storage via alloca instead of from the heap. */ +- +-#define V_STRDUP(dest, src) \ +- do \ +- { \ +- int _len = strlen ((src)); \ +- (dest) = (char *) alloca (_len + 1); \ +- strcpy (dest, src); \ +- } \ +- while (0) +- + /* Return nonzero if STR represents an unsigned decimal integer, + otherwise return 0. */ + +@@ -57,6 +44,18 @@ isnumber_p (const char *str) + return 1; + } + ++static void ++store_string (char **bufptr, size_t *buflen, char *str) ++{ ++ size_t len = strlen (str) + 1; ++ if (len > *buflen) ++ { ++ *bufptr = xrealloc (*bufptr, len); ++ *buflen = len; ++ } ++ strcpy (*bufptr, str); ++} ++ + /* Extract from NAME, which has the form "[user][:.][group]", + a USERNAME, UID U, GROUPNAME, and GID G. + Either user or group, or both, must be present. +@@ -70,23 +69,21 @@ isnumber_p (const char *str) + Return NULL if successful, a static error message string if not. */ + + const char * +-parse_user_spec (const char *spec_arg, uid_t *uid, gid_t *gid, +- char **username_arg, char **groupname_arg) ++parse_user_spec0 (char *spec, uid_t *uid, gid_t *gid, ++ char **username_arg, char **groupname_arg) + { + static const char *tired = "virtual memory exhausted"; + const char *error_msg; +- char *spec; /* A copy we can write on. */ + struct passwd *pwd; + struct group *grp; + char *g, *u, *separator; +- char *groupname; ++ char *groupname = NULL; ++ size_t grouplen = 0; + + error_msg = NULL; + *username_arg = *groupname_arg = NULL; + groupname = NULL; + +- V_STRDUP (spec, spec_arg); +- + /* Find the separator if there is one. */ + separator = strchr (spec, ':'); + if (separator == NULL) +@@ -143,11 +140,12 @@ parse_user_spec (const char *spec_arg, uid_t *uid, gid_t *gid, + if (grp == NULL) + { + char nbuf[UINTMAX_STRSIZE_BOUND]; +- V_STRDUP (groupname, umaxtostr (pwd->pw_gid, nbuf)); ++ store_string (&groupname, &grouplen, ++ umaxtostr (pwd->pw_gid, nbuf)); + } + else + { +- V_STRDUP (groupname, grp->gr_name); ++ store_string (&groupname, &grouplen, grp->gr_name); + } + endgrent (); + } +@@ -178,7 +176,7 @@ parse_user_spec (const char *spec_arg, uid_t *uid, gid_t *gid, + endgrent (); /* Save a file descriptor. */ + + if (error_msg == NULL) +- V_STRDUP (groupname, g); ++ store_string (&groupname, &grouplen, g); + } + + if (error_msg == NULL) +@@ -191,23 +189,24 @@ parse_user_spec (const char *spec_arg, uid_t *uid, gid_t *gid, + } + + if (groupname != NULL && error_msg == NULL) +- { +- *groupname_arg = strdup (groupname); +- if (*groupname_arg == NULL) +- { +- if (*username_arg != NULL) +- { +- free (*username_arg); +- *username_arg = NULL; +- } +- error_msg = tired; +- } +- } ++ *groupname_arg = groupname; + } ++ else ++ free (groupname); + + return error_msg; + } + ++const char * ++parse_user_spec (const char *spec_arg, uid_t *uid, gid_t *gid, ++ char **username, char **groupname) ++{ ++ char *spec = xstrdup (spec_arg); ++ const char *retval = parse_user_spec0 (spec, uid, gid, username, groupname); ++ free (spec); ++ return retval; ++} ++ + #ifdef TEST + + #define NULL_CHECK(s) ((s) == NULL ? "(null)" : (s))