[arch-commits] Commit in linux-lts/trunk (2 files)

Andreas Radke andyrtr at archlinux.org
Thu Apr 2 14:59:04 UTC 2020


    Date: Thursday, April 2, 2020 @ 14:59:04
  Author: andyrtr
Revision: 379137

upgpkg: linux-lts 5.4.30-1: upstream update 5.4.30

Modified:
  linux-lts/trunk/PKGBUILD
Deleted:
  linux-lts/trunk/0001-CVE-2020-8835-Revert-bpf-Provide-better-register-bou.patch

-----------------------------------------------------------------+
 0001-CVE-2020-8835-Revert-bpf-Provide-better-register-bou.patch |   68 ----------
 PKGBUILD                                                        |   10 -
 2 files changed, 4 insertions(+), 74 deletions(-)

Deleted: 0001-CVE-2020-8835-Revert-bpf-Provide-better-register-bou.patch
===================================================================
--- 0001-CVE-2020-8835-Revert-bpf-Provide-better-register-bou.patch	2020-04-02 11:30:23 UTC (rev 379136)
+++ 0001-CVE-2020-8835-Revert-bpf-Provide-better-register-bou.patch	2020-04-02 14:59:04 UTC (rev 379137)
@@ -1,68 +0,0 @@
-From 6f2896ad2981c70be7caf0e44e0adc25f76d9937 Mon Sep 17 00:00:00 2001
-From: Levente Polyak <levente at leventepolyak.net>
-Date: Mon, 30 Mar 2020 20:42:07 +0200
-Subject: [PATCH] CVE-2020-8835: Revert "bpf: Provide better register bounds
- after jmp32 instructions"
-
-This reverts commit b4de258dede528f88f401259aab3147fb6da1ddf which is a
-backport of 581738a681b6.
-
-Manfred Paul, as part of the ZDI pwn2own competition, demonstrated
-that a flaw existed in the bpf verifier for 32bit operations. This
-was introduced in commit:
-
-  581738a681b6 ("bpf: Provide better register bounds after jmp32 instructions")
-
-The result is that register bounds were improperly calculated,
-allowing out-of-bounds reads and writes to occur.
----
- kernel/bpf/verifier.c | 19 -------------------
- 1 file changed, 19 deletions(-)
-
-diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c
-index b2817d0929b3..a0b76b360d6f 100644
---- a/kernel/bpf/verifier.c
-+++ b/kernel/bpf/verifier.c
-@@ -979,17 +979,6 @@ static void __reg_bound_offset(struct bpf_reg_state *reg)
- 						 reg->umax_value));
- }
- 
--static void __reg_bound_offset32(struct bpf_reg_state *reg)
--{
--	u64 mask = 0xffffFFFF;
--	struct tnum range = tnum_range(reg->umin_value & mask,
--				       reg->umax_value & mask);
--	struct tnum lo32 = tnum_cast(reg->var_off, 4);
--	struct tnum hi32 = tnum_lshift(tnum_rshift(reg->var_off, 32), 32);
--
--	reg->var_off = tnum_or(hi32, tnum_intersect(lo32, range));
--}
--
- /* Reset the min/max bounds of a register */
- static void __mark_reg_unbounded(struct bpf_reg_state *reg)
- {
-@@ -5452,10 +5441,6 @@ static void reg_set_min_max(struct bpf_reg_state *true_reg,
- 	/* We might have learned some bits from the bounds. */
- 	__reg_bound_offset(false_reg);
- 	__reg_bound_offset(true_reg);
--	if (is_jmp32) {
--		__reg_bound_offset32(false_reg);
--		__reg_bound_offset32(true_reg);
--	}
- 	/* Intersecting with the old var_off might have improved our bounds
- 	 * slightly.  e.g. if umax was 0x7f...f and var_off was (0; 0xf...fc),
- 	 * then new var_off is (0; 0x7f...fc) which improves our umax.
-@@ -5565,10 +5550,6 @@ static void reg_set_min_max_inv(struct bpf_reg_state *true_reg,
- 	/* We might have learned some bits from the bounds. */
- 	__reg_bound_offset(false_reg);
- 	__reg_bound_offset(true_reg);
--	if (is_jmp32) {
--		__reg_bound_offset32(false_reg);
--		__reg_bound_offset32(true_reg);
--	}
- 	/* Intersecting with the old var_off might have improved our bounds
- 	 * slightly.  e.g. if umax was 0x7f...f and var_off was (0; 0xf...fc),
- 	 * then new var_off is (0; 0x7f...fc) which improves our umax.
--- 
-2.26.0
-

Modified: PKGBUILD
===================================================================
--- PKGBUILD	2020-04-02 11:30:23 UTC (rev 379136)
+++ PKGBUILD	2020-04-02 14:59:04 UTC (rev 379137)
@@ -1,8 +1,8 @@
 # Maintainer: Andreas Radke <andyrtr at archlinux.org>
 
 pkgbase=linux-lts
-pkgver=5.4.28
-pkgrel=2
+pkgver=5.4.30
+pkgrel=1
 pkgdesc='LTS Linux'
 url="https://www.kernel.org/"
 arch=(x86_64)
@@ -17,7 +17,6 @@
   https://www.kernel.org/pub/linux/kernel/v${pkgver%%.*}.x/${_srcname}.tar.{xz,sign}
   config         # the main kernel config file
   0001-add-sysctl-and-CONFIG-for-unprivileged_userns_clone.patch
-  0001-CVE-2020-8835-Revert-bpf-Provide-better-register-bou.patch
 )
 validpgpkeys=(
   'ABAF11C65A2970B130ABE3C479BE3E4300411886'  # Linus Torvalds
@@ -24,11 +23,10 @@
   '647F28654894E3BD457199BE38DBBDC86092693E'  # Greg Kroah-Hartman
 )
 # https://www.kernel.org/pub/linux/kernel/v5.x/sha256sums.asc
-sha256sums=('c863cc1346348f9a40083b4bc0d34375117b1c401af920994d42e855653ef7a4'
+sha256sums=('11dd78f701bce619d90d3b2ee597601716c48087e159c890c1decd7b90349def'
             'SKIP'
             '7a58467b4cf628306a0048993f43508e5da39d8495801602b25b035372651697'
-            'a13581d3c6dc595206e4fe7fcf6b542e7a1bdbe96101f0f010fc5be49f99baf2'
-            'c6d203cb728fbe70f8bd60c9448f0cbcb36d8b535fc1cdd59bda4a26ead303bf')
+            'a13581d3c6dc595206e4fe7fcf6b542e7a1bdbe96101f0f010fc5be49f99baf2')
 
 export KBUILD_BUILD_HOST=archlinux
 export KBUILD_BUILD_USER=$pkgbase


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