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Chuck Tuffli 5374b9e146 bhyve/nvme: Fix Infinite loop in queue processing
In the functions pci_nvme_handle_admin_cmd and pci_nvme_handle_io_cmd
infinite loops are possible in the bhyve process if the sq->tail value
is greater than sq->size.

An attacker could overload the host CPU.

Fix is to validate that doorbell values:
 - Are for a valid (i.e., created) queue
 - Are not the same as the previous value
 - Fit within the available capacity

The emulation will generate an Asynchronous Event Notification (Invalid
Doorbell or Invalid Doorbell Value) if enabled and ignore the doorbell
update.

While in the neighborhood, remove a redundant bounds check.

Reported by:	Synacktiv
MFC after:	1 week
Security:	HYP-14
Sponsored by:	Alpha-Omega Project
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D46064
2024-10-13 06:58:50 -07:00
.cirrus-ci
.github CODEOWNERS: Add nuageinit 2024-07-25 11:15:29 +02:00
bin ps(1): Complete libxo transition 2024-10-13 02:21:46 +08:00
cddl zfs: merge openzfs/zfs@b10992582 2024-10-11 08:43:49 +02:00
contrib capsicum-test: rights are propagated on sctp_peeloff(2) 2024-10-08 20:41:45 -04:00
crypto openssl: Remove the specific version numbers from the instructions. 2024-09-08 09:45:31 -07:00
etc env: Add a handful of test cases. 2024-10-07 23:01:09 +02:00
gnu Remove residual blank line at start of Makefile 2024-07-15 16:43:39 -06:00
include Ensure that soft updates are not enabled by default when using mdmfs(8) 2024-10-03 08:06:28 -07:00
kerberos5 Remove residual blank line at start of Makefile 2024-07-15 16:43:39 -06:00
lib pf: convert DIOCGETRULESET to netlink 2024-10-10 14:10:41 +02:00
libexec rc.d/sendmail: Fix stopping service during shutdown 2024-10-10 13:43:37 +02:00
release EC2: Disable floppy and parallel port devices 2024-10-12 22:43:33 -07:00
rescue Remove residual blank line at start of Makefile 2024-07-15 16:43:39 -06:00
sbin mount(8): Complete libxo transition 2024-10-13 02:21:47 +08:00
secure Update config/build info for OpenSSL 3.0.15 2024-09-07 21:34:18 -07:00
share mac_bsdextended: Use SYSCTL VARIABLES section 2024-10-11 15:27:46 -06:00
stand loader/4th: Move from hint.acpi.0.rsdp to acpi.rsdp 2024-10-11 15:40:53 -06:00
sys amdtemp: add support for AMD Family 19h Models 40h-4Fh 2024-10-13 13:21:19 +00:00
targets Add targets/pseudo/bootstrap-packages 2024-10-11 14:15:47 -07:00
tests shm: Respect PROT_MAX when creating private mappings 2024-10-04 15:56:34 +00:00
tools git-arc: minor manpage edits 2024-10-11 11:14:43 -04:00
usr.bin iscsictl(8): Complete libxo transition 2024-10-13 02:21:48 +08:00
usr.sbin bhyve/nvme: Fix Infinite loop in queue processing 2024-10-13 06:58:50 -07:00
.arcconfig arcanist: use FreeBSD/git project repository instead of FreeBSD/svn 2022-08-23 14:16:41 +00:00
.arclint
.cirrus.yml Cirrus-CI: switch to llvm18 by default 2024-04-07 17:23:25 -04:00
.clang-format clang-format: Minor tweaks 2024-04-30 17:33:43 -04:00
.git-blame-ignore-revs iflib: Ignore fa7045f99c in blame 2024-09-22 10:09:29 +08:00
.gitattributes Remove SVN related Git attributes 2023-12-26 10:28:28 -07:00
.gitignore .gitignore: add sys/*/compile 2024-02-02 09:20:36 -07:00
.mailmap mailmap: Translate my personal address 2024-06-22 08:57:56 +02:00
CONTRIBUTING.md openssl: Import OpenSSL 3.0.15. 2024-09-03 20:56:17 -07:00
COPYRIGHT copyright: Bump the copyright date. 2023-12-31 23:15:43 -07:00
LOCKS Update LOCKS for Git 2023-12-26 10:28:25 -07:00
MAINTAINERS man filesystems: fix more xrefs after move to s4 2024-06-27 18:32:05 -06:00
Makefile armv6: Remove support for building armv6 2024-07-12 11:31:53 +00:00
Makefile.inc1 pkgbase: fix incremental generation of packages 2024-10-10 08:48:28 +02:00
Makefile.libcompat Remove residual blank line at start of Makefile 2024-07-15 16:43:39 -06:00
Makefile.sys.inc Remove $FreeBSD$: one-line sh pattern 2023-08-16 11:55:03 -06:00
ObsoleteFiles.inc ObsoleteFiles: fix the libmd.so version bump order 2024-09-30 14:59:37 -05:00
README.md vendor/expat: import 2.6.3 2024-09-27 20:21:31 -07:00
RELNOTES RELNOTES: RSA host keys for SSH are deprecated 2024-09-27 09:28:44 -07:00
UPDATING UPDATING: increase visibility of footnotes 2024-09-06 12:34:33 -06:00

FreeBSD Source:

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