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linux-clearfog: kernel-CVE-2016-0728.patch
This commit is contained in:
parent
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commit
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2 changed files with 87 additions and 1 deletions
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@ -9,7 +9,7 @@ _commit=68ab517481e943505e871285acba58252247a42b
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_srcname=linux-armada38x-${_commit}
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_kernelname=${pkgname#linux}
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pkgver=3.10.94
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pkgrel=2
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pkgrel=3
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cryptodev_commit=da730106c2558c8e0c8e1b1b1812d32ef9574ab7
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bfqver=v7r8
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@ -23,6 +23,7 @@ source=("linux-${_commit}::https://github.com/moonman/linux-armada38x/archive/${
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"ftp://teambelgium.net/bfq/patches/${pkgver:0:4}.8+-${bfqver}/0001-block-cgroups-kconfig-build-bits-for-BFQ-${bfqver}-${pkgver:0:4}.8.patch"
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"ftp://teambelgium.net/bfq/patches/${pkgver:0:4}.8+-${bfqver}/0002-block-introduce-the-BFQ-${bfqver}-I-O-sched-for-${pkgver:0:4}.8.patch"
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"ftp://teambelgium.net/bfq/patches/${pkgver:0:4}.8+-${bfqver}/0003-block-bfq-add-Early-Queue-Merge-EQM-to-BFQ-${bfqver}-for-${pkgver:0:4}.8+.patch"
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'kernel-CVE-2016-0728.patch'
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'config')
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md5sums=('af41ba4dce094288c952d8ca1a29dc2a'
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@ -30,11 +31,15 @@ md5sums=('af41ba4dce094288c952d8ca1a29dc2a'
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'003f1554be6b672100d2f2401a574d92'
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'12ffe57584b4f2adcc3e184dc6948772'
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'9e78f9f5364f8ebb981aeb235dcb7415'
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'6470e9783bd1c7a8feddc2d67f07afd5'
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'882bada98a24407c3e5eba2e244c42a3')
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prepare() {
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cd "${srcdir}/${_srcname}"
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msg2 "Add ALARM patches"
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patch -Np1 -i "${srcdir}/kernel-CVE-2016-0728.patch"
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msg2 "Add BFQ patches"
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patch -Np1 -i "${srcdir}/0001-block-cgroups-kconfig-build-bits-for-BFQ-${bfqver}-${pkgver:0:4}.8.patch"
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patch -Np1 -i "${srcdir}/0002-block-introduce-the-BFQ-${bfqver}-I-O-sched-for-${pkgver:0:4}.8.patch"
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81
core/linux-clearfog/kernel-CVE-2016-0728.patch
Normal file
81
core/linux-clearfog/kernel-CVE-2016-0728.patch
Normal file
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@ -0,0 +1,81 @@
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From 23567fd052a9abb6d67fe8e7a9ccdd9800a540f2 Mon Sep 17 00:00:00 2001
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From: Yevgeny Pats <yevgeny@perception-point.io>
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Date: Tue, 19 Jan 2016 22:09:04 +0000
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Subject: KEYS: Fix keyring ref leak in join_session_keyring()
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This fixes CVE-2016-0728.
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If a thread is asked to join as a session keyring the keyring that's already
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set as its session, we leak a keyring reference.
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This can be tested with the following program:
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#include <stddef.h>
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#include <stdio.h>
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#include <sys/types.h>
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#include <keyutils.h>
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int main(int argc, const char *argv[])
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{
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int i = 0;
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key_serial_t serial;
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serial = keyctl(KEYCTL_JOIN_SESSION_KEYRING,
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"leaked-keyring");
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if (serial < 0) {
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perror("keyctl");
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return -1;
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}
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if (keyctl(KEYCTL_SETPERM, serial,
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KEY_POS_ALL | KEY_USR_ALL) < 0) {
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perror("keyctl");
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return -1;
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}
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for (i = 0; i < 100; i++) {
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serial = keyctl(KEYCTL_JOIN_SESSION_KEYRING,
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"leaked-keyring");
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if (serial < 0) {
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perror("keyctl");
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return -1;
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}
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}
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return 0;
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}
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If, after the program has run, there something like the following line in
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/proc/keys:
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3f3d898f I--Q--- 100 perm 3f3f0000 0 0 keyring leaked-keyring: empty
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with a usage count of 100 * the number of times the program has been run,
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then the kernel is malfunctioning. If leaked-keyring has zero usages or
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has been garbage collected, then the problem is fixed.
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Reported-by: Yevgeny Pats <yevgeny@perception-point.io>
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Signed-off-by: David Howells <dhowells@redhat.com>
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Acked-by: Don Zickus <dzickus@redhat.com>
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Acked-by: Prarit Bhargava <prarit@redhat.com>
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Acked-by: Jarod Wilson <jarod@redhat.com>
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Signed-off-by: James Morris <james.l.morris@oracle.com>
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---
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security/keys/process_keys.c | 1 +
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1 file changed, 1 insertion(+)
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diff --git a/security/keys/process_keys.c b/security/keys/process_keys.c
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index a3f85d2..e6d50172 100644
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--- a/security/keys/process_keys.c
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+++ b/security/keys/process_keys.c
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@@ -794,6 +794,7 @@ long join_session_keyring(const char *name)
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ret = PTR_ERR(keyring);
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goto error2;
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} else if (keyring == new->session_keyring) {
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+ key_put(keyring);
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ret = 0;
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goto error2;
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}
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--
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cgit v0.12
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