diff --git a/glibc-fix-cve-2024-33599.patch b/glibc-fix-cve-2024-33599.patch new file mode 100644 index 0000000..e0eb939 --- /dev/null +++ b/glibc-fix-cve-2024-33599.patch @@ -0,0 +1,37 @@ +From 87801a8fd06db1d654eea3e4f7626ff476a9bdaa Mon Sep 17 00:00:00 2001 +From: Florian Weimer +Date: Thu, 25 Apr 2024 15:00:45 +0200 +Subject: [PATCH] CVE-2024-33599: nscd: Stack-based buffer overflow in netgroup + cache (bug 31677) + +Using alloca matches what other caches do. The request length is +bounded by MAXKEYLEN. + +Reviewed-by: Carlos O'Donell +--- + nscd/netgroupcache.c | 5 +++-- + 1 file changed, 3 insertions(+), 2 deletions(-) + +diff --git a/nscd/netgroupcache.c b/nscd/netgroupcache.c +index 0c6e46f15c..f227dc7fa2 100644 +--- a/nscd/netgroupcache.c ++++ b/nscd/netgroupcache.c +@@ -502,12 +502,13 @@ addinnetgrX (struct database_dyn *db, int fd, request_header *req, + = (struct indataset *) mempool_alloc (db, + sizeof (*dataset) + req->key_len, + 1); +- struct indataset dataset_mem; + bool cacheable = true; + if (__glibc_unlikely (dataset == NULL)) + { + cacheable = false; +- dataset = &dataset_mem; ++ /* The alloca is safe because nscd_run_worker verfies that ++ key_len is not larger than MAXKEYLEN. */ ++ dataset = alloca (sizeof (*dataset) + req->key_len); + } + + datahead_init_pos (&dataset->head, sizeof (*dataset) + req->key_len, +-- +2.44.0 + diff --git a/glibc.changes b/glibc.changes index 6f5b443..acad9d8 100644 --- a/glibc.changes +++ b/glibc.changes @@ -1,3 +1,9 @@ +------------------------------------------------------------------- +Mon Apr 29 17:42:43 UTC 2024 - Giuliano Belinassi + +- glibc-fix-cve-2024-33599.patch: nscd: Stack-based buffer overflow in + netgroup cache (CVE-2024-33599, bsc#1223423) + ------------------------------------------------------------------- Thu Apr 18 07:55:49 UTC 2024 - Andreas Schwab diff --git a/glibc.spec b/glibc.spec index 8437610..ea086da 100644 --- a/glibc.spec +++ b/glibc.spec @@ -314,6 +314,8 @@ Patch1003: sigisemptyset.patch Patch1004: stdbit-builtins.patch # PATCH-FIX-UPSTREAM iconv: ISO-2022-CN-EXT: fix out-of-bound writes when writing escape sequence (CVE-2024-2961) Patch1005: iconv-iso-2022-cn-ext.patch +# PATCH-FIX-UPSTREAM: CVE-2024-33599: nscd: Stack-based buffer overflow in netgroup cache +Patch1006: glibc-fix-cve-2024-33599.patch %endif ###