2 files changed, 69 insertions, 0 deletions

diff --git a/meta-oe/recipes-connectivity/krb5/krb5/CVE-2025-24528.patch b/meta-oe/recipes-connectivity/krb5/krb5/CVE-2025-24528.patch
new file mode 100644
index 0000000000..ac6039edf1
--- /dev/null
+++ b/meta-oe/recipes-connectivity/krb5/krb5/CVE-2025-24528.patch
@@ -0,0 +1,68 @@
+From 78ceba024b64d49612375be4a12d1c066b0bfbd0 Mon Sep 17 00:00:00 2001
+From: Zoltan Borbely <Zoltan.Borbely@morganstanley.com>
+Date: Tue, 28 Jan 2025 16:39:25 -0500
+Subject: [PATCH] Prevent overflow when calculating ulog block size
+
+In kdb_log.c:resize(), log an error and fail if the update size is
+larger than the largest possible block size (2^16-1).
+
+CVE-2025-24528:
+
+In MIT krb5 release 1.7 and later with incremental propagation
+enabled, an authenticated attacker can cause kadmind to write beyond
+the end of the mapped region for the iprop log file, likely causing a
+process crash.
+
+[ghudson@mit.edu: edited commit message and added CVE description]
+
+ticket: 9159 (new)
+tags: pullup
+target_version: 1.21-next
+
+CVE: CVE-2025-24528
+
+Upstream-Status: Backport [https://github.com/krb5/krb5/commit/78ceba024b64d49612375be4a12d1c066b0bfbd0]
+
+Signed-off-by: Divya Chellam <divya.chellam@windriver.com>
+---
+ src/lib/kdb/kdb_log.c | 10 ++++++++--
+ 1 file changed, 8 insertions(+), 2 deletions(-)
+
+diff --git a/src/lib/kdb/kdb_log.c b/src/lib/kdb/kdb_log.c
+index 2659a25..68fae91 100644
+--- a/src/lib/kdb/kdb_log.c
++++ b/src/lib/kdb/kdb_log.c
+@@ -183,7 +183,7 @@ extend_file_to(int fd, unsigned int new_size)
+  */
+ static krb5_error_code
+ resize(kdb_hlog_t *ulog, uint32_t ulogentries, int ulogfd,
+-       unsigned int recsize)
++       unsigned int recsize, const kdb_incr_update_t *upd)
+ {
+     unsigned int new_block, new_size;
+ 
+@@ -195,6 +195,12 @@ resize(kdb_hlog_t *ulog, uint32_t ulogentries, int ulogfd,
+     new_block *= ULOG_BLOCK;
+     new_size += ulogentries * new_block;
+ 
++    if (new_block > UINT16_MAX) {
++        syslog(LOG_ERR, _("ulog overflow caused by principal %.*s"),
++               upd->kdb_princ_name.utf8str_t_len,
++               upd->kdb_princ_name.utf8str_t_val);
++        return KRB5_LOG_ERROR;
++    }
+     if (new_size > MAXLOGLEN)
+         return KRB5_LOG_ERROR;
+ 
+@@ -291,7 +297,7 @@ store_update(kdb_log_context *log_ctx, kdb_incr_update_t *upd)
+     recsize = sizeof(kdb_ent_header_t) + upd_size;
+ 
+     if (recsize > ulog->kdb_block) {
+-        retval = resize(ulog, ulogentries, log_ctx->ulogfd, recsize);
++        retval = resize(ulog, ulogentries, log_ctx->ulogfd, recsize, upd);
+         if (retval)
+             return retval;
+     }
+-- 
+2.40.0
+
diff --git a/meta-oe/recipes-connectivity/krb5/krb5_1.21.3.bb b/meta-oe/recipes-connectivity/krb5/krb5_1.21.3.bb
index 7489181322..b64bdb4af7 100644
--- a/meta-oe/recipes-connectivity/krb5/krb5_1.21.3.bb
+++ b/meta-oe/recipes-connectivity/krb5/krb5_1.21.3.bb
@@ -29,6 +29,7 @@ SRC_URI = "http://web.mit.edu/kerberos/dist/${BPN}/${SHRT_VER}/${BP}.tar.gz \
            file://krb5-kdc.service \
            file://krb5-admin-server.service \
            file://CVE-2024-26458_CVE-2024-26461.patch;striplevel=2 \
+           file://CVE-2025-24528.patch;striplevel=2 \
 "
 
 SRC_URI[sha256sum] = "b7a4cd5ead67fb08b980b21abd150ff7217e85ea320c9ed0c6dadd304840ad35"