diff options
Diffstat (limited to 'meta/recipes-core/systemd/systemd/0025-journald-set-a-limit-on-the-number-of-fields-1k.patch')
| -rw-r--r-- | meta/recipes-core/systemd/systemd/0025-journald-set-a-limit-on-the-number-of-fields-1k.patch | 56 |
1 files changed, 0 insertions, 56 deletions
diff --git a/meta/recipes-core/systemd/systemd/0025-journald-set-a-limit-on-the-number-of-fields-1k.patch b/meta/recipes-core/systemd/systemd/0025-journald-set-a-limit-on-the-number-of-fields-1k.patch deleted file mode 100644 index 50a01efe8f..0000000000 --- a/meta/recipes-core/systemd/systemd/0025-journald-set-a-limit-on-the-number-of-fields-1k.patch +++ /dev/null @@ -1,56 +0,0 @@ -From 4566aaf97f5b4143b930d75628f3abc905249dcd Mon Sep 17 00:00:00 2001 -From: =?UTF-8?q?Zbigniew=20J=C4=99drzejewski-Szmek?= <zbyszek@in.waw.pl> -Date: Wed, 5 Dec 2018 22:45:02 +0100 -Subject: [PATCH] journald: set a limit on the number of fields (1k) - -We allocate a iovec entry for each field, so with many short entries, -our memory usage and processing time can be large, even with a relatively -small message size. Let's refuse overly long entries. - -CVE-2018-16865 -https://bugzilla.redhat.com/show_bug.cgi?id=1653861 - -What from I can see, the problem is not from an alloca, despite what the CVE -description says, but from the attack multiplication that comes from creating -many very small iovecs: (void* + size_t) for each three bytes of input message. - -Patch backported from systemd master at -052c57f132f04a3cf4148f87561618da1a6908b4. ---- - src/basic/journal-importer.h | 3 +++ - src/journal/journald-native.c | 5 +++++ - 2 files changed, 8 insertions(+) - -diff --git a/src/basic/journal-importer.h b/src/basic/journal-importer.h -index f49ce734a1..c4ae45d32d 100644 ---- a/src/basic/journal-importer.h -+++ b/src/basic/journal-importer.h -@@ -16,6 +16,9 @@ - #define DATA_SIZE_MAX (1024*1024*768u) - #define LINE_CHUNK 8*1024u - -+/* The maximum number of fields in an entry */ -+#define ENTRY_FIELD_COUNT_MAX 1024 -+ - struct iovec_wrapper { - struct iovec *iovec; - size_t size_bytes; -diff --git a/src/journal/journald-native.c b/src/journal/journald-native.c -index 5ff22a10af..951d092053 100644 ---- a/src/journal/journald-native.c -+++ b/src/journal/journald-native.c -@@ -140,6 +140,11 @@ static int server_process_entry( - } - - /* A property follows */ -+ if (n > ENTRY_FIELD_COUNT_MAX) { -+ log_debug("Received an entry that has more than " STRINGIFY(ENTRY_FIELD_COUNT_MAX) " fields, ignoring entry."); -+ r = 1; -+ goto finish; -+ } - - /* n existing properties, 1 new, +1 for _TRANSPORT */ - if (!GREEDY_REALLOC(iovec, m, --- -2.11.0 - |