guix/gnu/packages/patches/qemu-CVE-2016-1568.patch
Mark H Weaver fd9a5b0fc3 gnu: qemu: Update to 2.5.0; add fixes for security flaws.
* gnu/packages/patches/qemu-CVE-2015-6855.patch: Delete file.
* gnu/packages/patches/qemu-virtio-9p-use-accessor-to-get-thread-pool.patch,
  gnu/packages/patches/qemu-CVE-2015-8558.patch,
  gnu/packages/patches/qemu-CVE-2015-8567.patch,
  gnu/packages/patches/qemu-CVE-2015-8613.patch,
  gnu/packages/patches/qemu-CVE-2015-8701.patch,
  gnu/packages/patches/qemu-CVE-2015-8743.patch,
  gnu/packages/patches/qemu-CVE-2016-1568.patch,
  gnu/packages/patches/qemu-CVE-2016-1922.patch: New files.
* gnu-system.am (dist_patch_DATA): Remove 'qemu-CVE-2015-6855.patch'; add the
  new patches.
* gnu/packages/qemu.scm (qemu): Update to 2.5.0.
  [source]: Remove old patches and add new ones.
  [arguments]: Add 'disable-test-qga' phase.
  (%glib-memory-vtable-patch, %glib-duplicate-test-patch): Remove variables.
2016-02-03 00:05:22 -05:00

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1.4 KiB
Diff

From 4ab0359a8ae182a7ac5c99609667273167703fab Mon Sep 17 00:00:00 2001
From: Prasad J Pandit <pjp@fedoraproject.org>
Date: Mon, 11 Jan 2016 14:10:42 -0500
Subject: [PATCH] ide: ahci: reset ncq object to unused on error
When processing NCQ commands, AHCI device emulation prepares a
NCQ transfer object; To which an aio control block(aiocb) object
is assigned in 'execute_ncq_command'. In case, when the NCQ
command is invalid, the 'aiocb' object is not assigned, and NCQ
transfer object is left as 'used'. This leads to a use after
free kind of error in 'bdrv_aio_cancel_async' via 'ahci_reset_port'.
Reset NCQ transfer object to 'unused' to avoid it.
[Maintainer edit: s/ACHI/AHCI/ in the commit message. --js]
Reported-by: Qinghao Tang <luodalongde@gmail.com>
Signed-off-by: Prasad J Pandit <pjp@fedoraproject.org>
Reviewed-by: John Snow <jsnow@redhat.com>
Message-id: 1452282511-4116-1-git-send-email-ppandit@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>
---
hw/ide/ahci.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/hw/ide/ahci.c b/hw/ide/ahci.c
index dd1912e..17f1cbd 100644
--- a/hw/ide/ahci.c
+++ b/hw/ide/ahci.c
@@ -910,6 +910,7 @@ static void ncq_err(NCQTransferState *ncq_tfs)
ide_state->error = ABRT_ERR;
ide_state->status = READY_STAT | ERR_STAT;
ncq_tfs->drive->port_regs.scr_err |= (1 << ncq_tfs->tag);
+ ncq_tfs->used = 0;
}
static void ncq_finish(NCQTransferState *ncq_tfs)
--
2.6.3