diff options
Diffstat (limited to 'meta/recipes-support/libgcrypt/files/0003-GCM-move-look-up-table-to-.data-section-and-unshare-.patch')
| -rw-r--r-- | meta/recipes-support/libgcrypt/files/0003-GCM-move-look-up-table-to-.data-section-and-unshare-.patch | 178 |
1 files changed, 0 insertions, 178 deletions
diff --git a/meta/recipes-support/libgcrypt/files/0003-GCM-move-look-up-table-to-.data-section-and-unshare-.patch b/meta/recipes-support/libgcrypt/files/0003-GCM-move-look-up-table-to-.data-section-and-unshare-.patch deleted file mode 100644 index b580b7b13c..0000000000 --- a/meta/recipes-support/libgcrypt/files/0003-GCM-move-look-up-table-to-.data-section-and-unshare-.patch +++ /dev/null @@ -1,178 +0,0 @@ -From a4c561aab1014c3630bc88faf6f5246fee16b020 Mon Sep 17 00:00:00 2001 -From: Jussi Kivilinna <jussi.kivilinna@iki.fi> -Date: Fri, 31 May 2019 17:27:25 +0300 -Subject: [PATCH 3/3] GCM: move look-up table to .data section and unshare - between processes - -* cipher/cipher-gcm.c (ATTR_ALIGNED_64): New. -(gcmR): Move to 'gcm_table' structure. -(gcm_table): New structure for look-up table with counters before and -after. -(gcmR): New macro. -(prefetch_table): Handle input with length not multiple of 256. -(do_prefetch_tables): Modify pre- and post-table counters to unshare -look-up table pages between processes. --- - -GnuPG-bug-id: 4541 -Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi> - -Upstream-Status: Backport -[https://github.com/gpg/libgcrypt/commit/a4c561aab1014c3630bc88faf6f5246fee16b020] - -CVE: CVE-2019-12904 - -Signed-off-by: Yi Zhao <yi.zhao@windriver.com> ---- - cipher/cipher-gcm.c | 106 ++++++++++++++++++++++++++++++++++------------------ - 1 file changed, 70 insertions(+), 36 deletions(-) - -diff --git a/cipher/cipher-gcm.c b/cipher/cipher-gcm.c -index 11f119a..194e2ec 100644 ---- a/cipher/cipher-gcm.c -+++ b/cipher/cipher-gcm.c -@@ -30,6 +30,14 @@ - #include "./cipher-internal.h" - - -+/* Helper macro to force alignment to 16 or 64 bytes. */ -+#ifdef HAVE_GCC_ATTRIBUTE_ALIGNED -+# define ATTR_ALIGNED_64 __attribute__ ((aligned (64))) -+#else -+# define ATTR_ALIGNED_64 -+#endif -+ -+ - #ifdef GCM_USE_INTEL_PCLMUL - extern void _gcry_ghash_setup_intel_pclmul (gcry_cipher_hd_t c); - -@@ -83,40 +91,54 @@ ghash_armv7_neon (gcry_cipher_hd_t c, byte *result, const byte *buf, - - - #ifdef GCM_USE_TABLES --static const u16 gcmR[256] = { -- 0x0000, 0x01c2, 0x0384, 0x0246, 0x0708, 0x06ca, 0x048c, 0x054e, -- 0x0e10, 0x0fd2, 0x0d94, 0x0c56, 0x0918, 0x08da, 0x0a9c, 0x0b5e, -- 0x1c20, 0x1de2, 0x1fa4, 0x1e66, 0x1b28, 0x1aea, 0x18ac, 0x196e, -- 0x1230, 0x13f2, 0x11b4, 0x1076, 0x1538, 0x14fa, 0x16bc, 0x177e, -- 0x3840, 0x3982, 0x3bc4, 0x3a06, 0x3f48, 0x3e8a, 0x3ccc, 0x3d0e, -- 0x3650, 0x3792, 0x35d4, 0x3416, 0x3158, 0x309a, 0x32dc, 0x331e, -- 0x2460, 0x25a2, 0x27e4, 0x2626, 0x2368, 0x22aa, 0x20ec, 0x212e, -- 0x2a70, 0x2bb2, 0x29f4, 0x2836, 0x2d78, 0x2cba, 0x2efc, 0x2f3e, -- 0x7080, 0x7142, 0x7304, 0x72c6, 0x7788, 0x764a, 0x740c, 0x75ce, -- 0x7e90, 0x7f52, 0x7d14, 0x7cd6, 0x7998, 0x785a, 0x7a1c, 0x7bde, -- 0x6ca0, 0x6d62, 0x6f24, 0x6ee6, 0x6ba8, 0x6a6a, 0x682c, 0x69ee, -- 0x62b0, 0x6372, 0x6134, 0x60f6, 0x65b8, 0x647a, 0x663c, 0x67fe, -- 0x48c0, 0x4902, 0x4b44, 0x4a86, 0x4fc8, 0x4e0a, 0x4c4c, 0x4d8e, -- 0x46d0, 0x4712, 0x4554, 0x4496, 0x41d8, 0x401a, 0x425c, 0x439e, -- 0x54e0, 0x5522, 0x5764, 0x56a6, 0x53e8, 0x522a, 0x506c, 0x51ae, -- 0x5af0, 0x5b32, 0x5974, 0x58b6, 0x5df8, 0x5c3a, 0x5e7c, 0x5fbe, -- 0xe100, 0xe0c2, 0xe284, 0xe346, 0xe608, 0xe7ca, 0xe58c, 0xe44e, -- 0xef10, 0xeed2, 0xec94, 0xed56, 0xe818, 0xe9da, 0xeb9c, 0xea5e, -- 0xfd20, 0xfce2, 0xfea4, 0xff66, 0xfa28, 0xfbea, 0xf9ac, 0xf86e, -- 0xf330, 0xf2f2, 0xf0b4, 0xf176, 0xf438, 0xf5fa, 0xf7bc, 0xf67e, -- 0xd940, 0xd882, 0xdac4, 0xdb06, 0xde48, 0xdf8a, 0xddcc, 0xdc0e, -- 0xd750, 0xd692, 0xd4d4, 0xd516, 0xd058, 0xd19a, 0xd3dc, 0xd21e, -- 0xc560, 0xc4a2, 0xc6e4, 0xc726, 0xc268, 0xc3aa, 0xc1ec, 0xc02e, -- 0xcb70, 0xcab2, 0xc8f4, 0xc936, 0xcc78, 0xcdba, 0xcffc, 0xce3e, -- 0x9180, 0x9042, 0x9204, 0x93c6, 0x9688, 0x974a, 0x950c, 0x94ce, -- 0x9f90, 0x9e52, 0x9c14, 0x9dd6, 0x9898, 0x995a, 0x9b1c, 0x9ade, -- 0x8da0, 0x8c62, 0x8e24, 0x8fe6, 0x8aa8, 0x8b6a, 0x892c, 0x88ee, -- 0x83b0, 0x8272, 0x8034, 0x81f6, 0x84b8, 0x857a, 0x873c, 0x86fe, -- 0xa9c0, 0xa802, 0xaa44, 0xab86, 0xaec8, 0xaf0a, 0xad4c, 0xac8e, -- 0xa7d0, 0xa612, 0xa454, 0xa596, 0xa0d8, 0xa11a, 0xa35c, 0xa29e, -- 0xb5e0, 0xb422, 0xb664, 0xb7a6, 0xb2e8, 0xb32a, 0xb16c, 0xb0ae, -- 0xbbf0, 0xba32, 0xb874, 0xb9b6, 0xbcf8, 0xbd3a, 0xbf7c, 0xbebe, --}; -+static struct -+{ -+ volatile u32 counter_head; -+ u32 cacheline_align[64 / 4 - 1]; -+ u16 R[256]; -+ volatile u32 counter_tail; -+} gcm_table ATTR_ALIGNED_64 = -+ { -+ 0, -+ { 0, }, -+ { -+ 0x0000, 0x01c2, 0x0384, 0x0246, 0x0708, 0x06ca, 0x048c, 0x054e, -+ 0x0e10, 0x0fd2, 0x0d94, 0x0c56, 0x0918, 0x08da, 0x0a9c, 0x0b5e, -+ 0x1c20, 0x1de2, 0x1fa4, 0x1e66, 0x1b28, 0x1aea, 0x18ac, 0x196e, -+ 0x1230, 0x13f2, 0x11b4, 0x1076, 0x1538, 0x14fa, 0x16bc, 0x177e, -+ 0x3840, 0x3982, 0x3bc4, 0x3a06, 0x3f48, 0x3e8a, 0x3ccc, 0x3d0e, -+ 0x3650, 0x3792, 0x35d4, 0x3416, 0x3158, 0x309a, 0x32dc, 0x331e, -+ 0x2460, 0x25a2, 0x27e4, 0x2626, 0x2368, 0x22aa, 0x20ec, 0x212e, -+ 0x2a70, 0x2bb2, 0x29f4, 0x2836, 0x2d78, 0x2cba, 0x2efc, 0x2f3e, -+ 0x7080, 0x7142, 0x7304, 0x72c6, 0x7788, 0x764a, 0x740c, 0x75ce, -+ 0x7e90, 0x7f52, 0x7d14, 0x7cd6, 0x7998, 0x785a, 0x7a1c, 0x7bde, -+ 0x6ca0, 0x6d62, 0x6f24, 0x6ee6, 0x6ba8, 0x6a6a, 0x682c, 0x69ee, -+ 0x62b0, 0x6372, 0x6134, 0x60f6, 0x65b8, 0x647a, 0x663c, 0x67fe, -+ 0x48c0, 0x4902, 0x4b44, 0x4a86, 0x4fc8, 0x4e0a, 0x4c4c, 0x4d8e, -+ 0x46d0, 0x4712, 0x4554, 0x4496, 0x41d8, 0x401a, 0x425c, 0x439e, -+ 0x54e0, 0x5522, 0x5764, 0x56a6, 0x53e8, 0x522a, 0x506c, 0x51ae, -+ 0x5af0, 0x5b32, 0x5974, 0x58b6, 0x5df8, 0x5c3a, 0x5e7c, 0x5fbe, -+ 0xe100, 0xe0c2, 0xe284, 0xe346, 0xe608, 0xe7ca, 0xe58c, 0xe44e, -+ 0xef10, 0xeed2, 0xec94, 0xed56, 0xe818, 0xe9da, 0xeb9c, 0xea5e, -+ 0xfd20, 0xfce2, 0xfea4, 0xff66, 0xfa28, 0xfbea, 0xf9ac, 0xf86e, -+ 0xf330, 0xf2f2, 0xf0b4, 0xf176, 0xf438, 0xf5fa, 0xf7bc, 0xf67e, -+ 0xd940, 0xd882, 0xdac4, 0xdb06, 0xde48, 0xdf8a, 0xddcc, 0xdc0e, -+ 0xd750, 0xd692, 0xd4d4, 0xd516, 0xd058, 0xd19a, 0xd3dc, 0xd21e, -+ 0xc560, 0xc4a2, 0xc6e4, 0xc726, 0xc268, 0xc3aa, 0xc1ec, 0xc02e, -+ 0xcb70, 0xcab2, 0xc8f4, 0xc936, 0xcc78, 0xcdba, 0xcffc, 0xce3e, -+ 0x9180, 0x9042, 0x9204, 0x93c6, 0x9688, 0x974a, 0x950c, 0x94ce, -+ 0x9f90, 0x9e52, 0x9c14, 0x9dd6, 0x9898, 0x995a, 0x9b1c, 0x9ade, -+ 0x8da0, 0x8c62, 0x8e24, 0x8fe6, 0x8aa8, 0x8b6a, 0x892c, 0x88ee, -+ 0x83b0, 0x8272, 0x8034, 0x81f6, 0x84b8, 0x857a, 0x873c, 0x86fe, -+ 0xa9c0, 0xa802, 0xaa44, 0xab86, 0xaec8, 0xaf0a, 0xad4c, 0xac8e, -+ 0xa7d0, 0xa612, 0xa454, 0xa596, 0xa0d8, 0xa11a, 0xa35c, 0xa29e, -+ 0xb5e0, 0xb422, 0xb664, 0xb7a6, 0xb2e8, 0xb32a, 0xb16c, 0xb0ae, -+ 0xbbf0, 0xba32, 0xb874, 0xb9b6, 0xbcf8, 0xbd3a, 0xbf7c, 0xbebe, -+ }, -+ 0 -+ }; -+ -+#define gcmR gcm_table.R - - static inline - void prefetch_table(const void *tab, size_t len) -@@ -124,7 +146,7 @@ void prefetch_table(const void *tab, size_t len) - const volatile byte *vtab = tab; - size_t i; - -- for (i = 0; i < len; i += 8 * 32) -+ for (i = 0; len - i >= 8 * 32; i += 8 * 32) - { - (void)vtab[i + 0 * 32]; - (void)vtab[i + 1 * 32]; -@@ -135,6 +157,10 @@ void prefetch_table(const void *tab, size_t len) - (void)vtab[i + 6 * 32]; - (void)vtab[i + 7 * 32]; - } -+ for (; i < len; i += 32) -+ { -+ (void)vtab[i]; -+ } - - (void)vtab[len - 1]; - } -@@ -142,8 +168,16 @@ void prefetch_table(const void *tab, size_t len) - static inline void - do_prefetch_tables (const void *gcmM, size_t gcmM_size) - { -+ /* Modify counters to trigger copy-on-write and unsharing if physical pages -+ * of look-up table are shared between processes. Modifying counters also -+ * causes checksums for pages to change and hint same-page merging algorithm -+ * that these pages are frequently changing. */ -+ gcm_table.counter_head++; -+ gcm_table.counter_tail++; -+ -+ /* Prefetch look-up tables to cache. */ - prefetch_table(gcmM, gcmM_size); -- prefetch_table(gcmR, sizeof(gcmR)); -+ prefetch_table(&gcm_table, sizeof(gcm_table)); - } - - #ifdef GCM_TABLES_USE_U64 --- -2.7.4 - |