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Linux v5.8.8

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Signed-off-by: Justin M. Forbes <jforbes@fedoraproject.org>
This commit is contained in:
Justin M. Forbes 2020-09-09 14:11:04 -05:00
parent 33d954533d
commit 128e352d21
4 changed files with 5 additions and 116 deletions
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49
0001-xfs-fix-boundary-test-in-xfs_attr_shortform_verify.patch
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@ -1,49 +0,0 @@
From f4020438fab05364018c91f7e02ebdd192085933 Mon Sep 17 00:00:00 2001
From: Eric Sandeen <sandeen@redhat.com>
Date: Wed, 26 Aug 2020 14:11:58 -0700
Subject: [PATCH] xfs: fix boundary test in xfs_attr_shortform_verify
The boundary test for the fixed-offset parts of xfs_attr_sf_entry in
xfs_attr_shortform_verify is off by one, because the variable array
at the end is defined as nameval[1] not nameval[].
Hence we need to subtract 1 from the calculation.
This can be shown by:
# touch file
# setfattr -n root.a file
and verifications will fail when it's written to disk.
This only matters for a last attribute which has a single-byte name
and no value, otherwise the combination of namelen & valuelen will
push endp further out and this test won't fail.
Fixes: 1e1bbd8e7ee06 ("xfs: create structure verifier function for shortform xattrs")
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
---
fs/xfs/libxfs/xfs_attr_leaf.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/fs/xfs/libxfs/xfs_attr_leaf.c b/fs/xfs/libxfs/xfs_attr_leaf.c
index 8623c815164a..383b08f2ac61 100644
--- a/fs/xfs/libxfs/xfs_attr_leaf.c
+++ b/fs/xfs/libxfs/xfs_attr_leaf.c
@@ -1036,8 +1036,10 @@ xfs_attr_shortform_verify(
* struct xfs_attr_sf_entry has a variable length.
* Check the fixed-offset parts of the structure are
* within the data buffer.
+ * xfs_attr_sf_entry is defined with a 1-byte variable
+ * array at the end, so we must subtract that off.
*/
- if (((char *)sfep + sizeof(*sfep)) >= endp)
+ if (((char *)sfep + sizeof(*sfep) - 1) >= endp)
return __this_address;
/* Don't allow names with known bad length. */
--
2.26.2

11
kernel.spec
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@ -92,7 +92,7 @@ Summary: The Linux kernel
%if 0%{?released_kernel}
# Do we have a -stable update to apply?
%define stable_update 7
%define stable_update 8
# Set rpm version accordingly
%if 0%{?stable_update}
%define stablerev %{stable_update}
@ -867,12 +867,6 @@ Patch105: 0001-platform-x86-thinkpad_acpi-lap-or-desk-mode-interfac.patch
# https://bugzilla.redhat.com/show_bug.cgi?id=1874117
Patch107: 0001-drivers-perf-xgene_pmu-Fix-uninitialized-resource-st.patch
# CVE-2020-14385 rhbz 1874800 1874811
Patch108: 0001-xfs-fix-boundary-test-in-xfs_attr_shortform_verify.patch
# CVE-2020-14386 rhbz 1875699 1876349
Patch109: net-packet-fix-overflow-in-tpacket_rcv.patch
Patch110: memory-tegra-Remove-GPU-from-DRM-IOMMU-group.patch
# END OF PATCH DEFINITIONS
@ -2979,6 +2973,9 @@ fi
#
#
%changelog
* Wed Sep 9 13:39:47 CDT 2020 Justin M. Forbes <jforbes@fedoraproject.org> - 5.8.8-300
- Linux v5.8.8
* Mon Sep 07 2020 Justin M. Forbes <jforbes@fedoraproject.org> - 5.8.7-300
- Linux v5.8.7
- Fix CVE-2020-14386 (rhbz 1875699 1876349)

59
net-packet-fix-overflow-in-tpacket_rcv.patch
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@ -1,59 +0,0 @@
From 00c393ea14d12a4ef490a6aedf0fa6bfc2bfe8c3 Mon Sep 17 00:00:00 2001
From: Sasha Levin <sashal@kernel.org>
Date: Thu, 3 Sep 2020 21:05:28 -0700
Subject: net/packet: fix overflow in tpacket_rcv
From: Or Cohen <orcohen@paloaltonetworks.com>
[ Upstream commit acf69c946233259ab4d64f8869d4037a198c7f06 ]
Using tp_reserve to calculate netoff can overflow as
tp_reserve is unsigned int and netoff is unsigned short.
This may lead to macoff receving a smaller value then
sizeof(struct virtio_net_hdr), and if po->has_vnet_hdr
is set, an out-of-bounds write will occur when
calling virtio_net_hdr_from_skb.
The bug is fixed by converting netoff to unsigned int
and checking if it exceeds USHRT_MAX.
This addresses CVE-2020-14386
Fixes: 8913336a7e8d ("packet: add PACKET_RESERVE sockopt")
Signed-off-by: Or Cohen <orcohen@paloaltonetworks.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/packet/af_packet.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index 301f41d4929bd..82f7802983797 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -2170,7 +2170,8 @@ static int tpacket_rcv(struct sk_buff *skb, struct net_device *dev,
int skb_len = skb->len;
unsigned int snaplen, res;
unsigned long status = TP_STATUS_USER;
- unsigned short macoff, netoff, hdrlen;
+ unsigned short macoff, hdrlen;
+ unsigned int netoff;
struct sk_buff *copy_skb = NULL;
struct timespec64 ts;
__u32 ts_status;
@@ -2239,6 +2240,10 @@ static int tpacket_rcv(struct sk_buff *skb, struct net_device *dev,
}
macoff = netoff - maclen;
}
+ if (netoff > USHRT_MAX) {
+ atomic_inc(&po->tp_drops);
+ goto drop_n_restore;
+ }
if (po->tp_version <= TPACKET_V2) {
if (macoff + snaplen > po->rx_ring.frame_size) {
if (po->copy_thresh &&
--
2.25.1

2
sources
View File

@ -1,2 +1,2 @@
SHA512 (linux-5.8.tar.xz) = 19c8694bda4533464877e2d976aca95f48c2c40c11efcc1dce0ca91cc5f9826110e277c7de2a49ff99af8ae1c76e275b7c463abf71fbf410956d63066dc4ee53
SHA512 (patch-5.8.7.xz) = f637d548e9b0419f7c65807d25c9d7547c956b211b680f6b13fd7cae636c3f3f4ef688bdaefb17956ab8290faf41420d76caf57f573a448f93e3267a620ffbf2
SHA512 (patch-5.8.8.xz) = daf14cdff3a101ef25bb701513b07752f399a92e0e61d839cbf2d85234f55ead50ee524eeeb85aa6f22044bcd0ecdbf877b96ac721c62c372a960909a5582fb7