From: David Howells <dhowells@redhat.com> To: linux-security-module@vger.kernel.org Cc: gnomes@lxorguk.ukuu.org.uk, linux-efi@vger.kernel.org, matthew.garrett@nebula.com, gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org, dhowells@redhat.com, jforbes@redhat.com Subject: [PATCH 19/27] scsi: Lock down the eata driver Date: Thu, 19 Oct 2017 15:52:57 +0100 [thread overview] Message-ID: <150842477698.7923.15570916285929038112.stgit@warthog.procyon.org.uk> (raw) In-Reply-To: <150842463163.7923.11081723749106843698.stgit@warthog.procyon.org.uk> When the kernel is running in secure boot mode, we lock down the kernel to prevent userspace from modifying the running kernel image. Whilst this includes prohibiting access to things like /dev/mem, it must also prevent access by means of configuring driver modules in such a way as to cause a device to access or modify the kernel image. The eata driver takes a single string parameter that contains a slew of settings, including hardware resource configuration. Prohibit use of the parameter if the kernel is locked down. Suggested-by: Alan Cox <gnomes@lxorguk.ukuu.org.uk> Signed-off-by: David Howells <dhowells@redhat.com> cc: Dario Ballabio <ballabio_dario@emc.com> cc: "James E.J. Bottomley" <jejb@linux.vnet.ibm.com> cc: "Martin K. Petersen" <martin.petersen@oracle.com> cc: linux-scsi@vger.kernel.org --- drivers/scsi/eata.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/scsi/eata.c b/drivers/scsi/eata.c index 6501c330d8c8..72fceaa8f3da 100644 --- a/drivers/scsi/eata.c +++ b/drivers/scsi/eata.c @@ -1552,8 +1552,11 @@ static int eata2x_detect(struct scsi_host_template *tpnt) tpnt->proc_name = "eata2x"; - if (strlen(boot_options)) + if (strlen(boot_options)) { + if (kernel_is_locked_down("Command line-specified device addresses, irqs and dma channels")) + return -EPERM; option_setup(boot_options); + } #if defined(MODULE) /* io_port could have been modified when loading as a module */
WARNING: multiple messages have this Message-ID (diff)
From: dhowells@redhat.com (David Howells) To: linux-security-module@vger.kernel.org Subject: [PATCH 19/27] scsi: Lock down the eata driver Date: Thu, 19 Oct 2017 15:52:57 +0100 [thread overview] Message-ID: <150842477698.7923.15570916285929038112.stgit@warthog.procyon.org.uk> (raw) In-Reply-To: <150842463163.7923.11081723749106843698.stgit@warthog.procyon.org.uk> When the kernel is running in secure boot mode, we lock down the kernel to prevent userspace from modifying the running kernel image. Whilst this includes prohibiting access to things like /dev/mem, it must also prevent access by means of configuring driver modules in such a way as to cause a device to access or modify the kernel image. The eata driver takes a single string parameter that contains a slew of settings, including hardware resource configuration. Prohibit use of the parameter if the kernel is locked down. Suggested-by: Alan Cox <gnomes@lxorguk.ukuu.org.uk> Signed-off-by: David Howells <dhowells@redhat.com> cc: Dario Ballabio <ballabio_dario@emc.com> cc: "James E.J. Bottomley" <jejb@linux.vnet.ibm.com> cc: "Martin K. Petersen" <martin.petersen@oracle.com> cc: linux-scsi at vger.kernel.org --- drivers/scsi/eata.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/scsi/eata.c b/drivers/scsi/eata.c index 6501c330d8c8..72fceaa8f3da 100644 --- a/drivers/scsi/eata.c +++ b/drivers/scsi/eata.c @@ -1552,8 +1552,11 @@ static int eata2x_detect(struct scsi_host_template *tpnt) tpnt->proc_name = "eata2x"; - if (strlen(boot_options)) + if (strlen(boot_options)) { + if (kernel_is_locked_down("Command line-specified device addresses, irqs and dma channels")) + return -EPERM; option_setup(boot_options); + } #if defined(MODULE) /* io_port could have been modified when loading as a module */ -- To unsubscribe from this list: send the line "unsubscribe linux-security-module" in the body of a message to majordomo at vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
next prev parent reply other threads:[~2017-10-19 14:53 UTC|newest] Thread overview: 359+ messages / expand[flat|nested] mbox.gz Atom feed top 2017-10-19 14:50 [PATCH 00/27] security, efi: Add kernel lockdown David Howells 2017-10-19 14:50 ` David Howells 2017-10-19 14:50 ` David Howells 2017-10-19 14:50 ` [PATCH 01/27] Add the ability to lock down access to the running kernel image David Howells 2017-10-19 14:50 ` David Howells 2017-10-20 23:19 ` James Morris 2017-10-20 23:19 ` James Morris 2017-10-19 14:50 ` [PATCH 02/27] Add a SysRq option to lift kernel lockdown David Howells 2017-10-19 14:50 ` David Howells 2017-10-19 17:20 ` Randy Dunlap 2017-10-19 17:20 ` Randy Dunlap 2017-10-19 17:20 ` Randy Dunlap 2017-10-19 22:12 ` David Howells 2017-10-19 22:12 ` David Howells 2017-10-19 22:12 ` David Howells 2017-11-07 17:39 ` Thiago Jung Bauermann 2017-11-07 17:39 ` Thiago Jung Bauermann 2017-11-07 22:56 ` David Howells 2017-11-07 22:56 ` David Howells 2017-10-19 14:50 ` [PATCH 03/27] Enforce module signatures if the kernel is locked down David Howells 2017-10-19 14:50 ` David Howells 2017-10-20 6:33 ` joeyli 2017-10-20 6:33 ` joeyli 2017-10-20 6:33 ` joeyli 2017-10-20 23:21 ` James Morris 2017-10-20 23:21 ` James Morris 2017-10-27 18:48 ` Mimi Zohar 2017-10-27 18:48 ` Mimi Zohar 2017-10-30 17:00 ` David Howells 2017-10-30 17:00 ` David Howells 2017-10-30 17:52 ` Mimi Zohar 2017-10-30 17:52 ` Mimi Zohar 2017-11-02 17:22 ` David Howells 2017-11-02 17:22 ` David Howells 2017-11-02 17:22 ` David Howells 2017-11-02 19:13 ` Mimi Zohar 2017-11-02 19:13 ` Mimi Zohar 2017-11-02 21:30 ` David Howells 2017-11-02 21:30 ` David Howells 2017-11-02 21:30 ` David Howells 2017-11-02 21:41 ` Mimi Zohar 2017-11-02 21:41 ` Mimi Zohar 2017-11-02 21:41 ` Mimi Zohar 2017-11-02 22:01 ` David Howells 2017-11-02 22:01 ` David Howells 2017-11-02 22:01 ` David Howells 2017-11-02 22:18 ` Mimi Zohar 2017-11-02 22:18 ` Mimi Zohar 2017-10-19 14:51 ` [PATCH 04/27] Restrict /dev/mem and /dev/kmem when " David Howells 2017-10-19 14:51 ` David Howells 2017-10-20 6:37 ` joeyli 2017-10-20 6:37 ` joeyli 2017-10-20 23:21 ` James Morris 2017-10-20 23:21 ` James Morris 2017-10-19 14:51 ` [PATCH 05/27] kexec: Disable at runtime if " David Howells 2017-10-19 14:51 ` David Howells 2017-10-20 6:38 ` joeyli 2017-10-20 6:38 ` joeyli 2017-10-20 23:22 ` James Morris 2017-10-20 23:22 ` James Morris 2017-10-19 14:51 ` [PATCH 06/27] Copy secure_boot flag in boot params across kexec reboot David Howells 2017-10-19 14:51 ` David Howells 2017-10-20 6:40 ` joeyli 2017-10-20 6:40 ` joeyli 2017-10-20 6:40 ` joeyli 2017-10-19 14:51 ` [PATCH 07/27] kexec_file: Disable at runtime if securelevel has been set David Howells 2017-10-19 14:51 ` David Howells 2017-10-20 23:26 ` James Morris 2017-10-20 23:26 ` James Morris 2017-10-23 15:54 ` Mimi Zohar 2017-10-23 15:54 ` Mimi Zohar 2017-10-23 15:54 ` Mimi Zohar 2017-10-26 7:42 ` joeyli 2017-10-26 7:42 ` joeyli 2017-10-26 14:17 ` Mimi Zohar 2017-10-26 14:17 ` Mimi Zohar 2017-10-27 19:30 ` Mimi Zohar 2017-10-27 19:30 ` Mimi Zohar 2017-10-27 19:32 ` Mimi Zohar 2017-10-27 19:32 ` Mimi Zohar 2017-10-27 19:32 ` Mimi Zohar 2017-10-28 8:34 ` joeyli 2017-10-28 8:34 ` joeyli 2017-10-29 22:26 ` Mimi Zohar 2017-10-29 22:26 ` Mimi Zohar 2017-10-29 22:26 ` Mimi Zohar 2017-10-30 9:00 ` David Howells 2017-10-30 9:00 ` David Howells 2017-10-30 12:01 ` Mimi Zohar 2017-10-30 12:01 ` Mimi Zohar 2017-10-26 15:02 ` David Howells 2017-10-26 15:02 ` David Howells 2017-10-26 15:46 ` Mimi Zohar 2017-10-26 15:46 ` Mimi Zohar 2017-10-26 15:46 ` Mimi Zohar 2017-10-30 15:49 ` David Howells 2017-10-30 15:49 ` David Howells 2017-10-30 16:43 ` Mimi Zohar 2017-10-30 16:43 ` Mimi Zohar 2017-10-30 16:43 ` Mimi Zohar 2017-11-02 17:00 ` David Howells 2017-11-02 17:00 ` David Howells 2017-10-26 14:51 ` David Howells 2017-10-26 14:51 ` David Howells 2017-10-26 14:51 ` David Howells 2017-11-02 17:29 ` David Howells 2017-11-02 17:29 ` David Howells 2017-11-02 17:29 ` David Howells 2017-10-19 14:51 ` [PATCH 08/27] hibernate: Disable when the kernel is locked down David Howells 2017-10-19 14:51 ` David Howells 2017-10-20 6:40 ` joeyli 2017-10-20 6:40 ` joeyli 2017-10-20 6:40 ` joeyli 2017-10-19 14:51 ` [PATCH 09/27] uswsusp: " David Howells 2017-10-19 14:51 ` David Howells 2017-10-20 6:41 ` joeyli 2017-10-20 6:41 ` joeyli 2017-10-20 23:29 ` James Morris 2017-10-20 23:29 ` James Morris 2017-10-20 23:29 ` James Morris 2017-10-19 14:51 ` [PATCH 10/27] PCI: Lock down BAR access " David Howells 2017-10-19 14:51 ` David Howells 2017-10-20 6:42 ` joeyli 2017-10-20 6:42 ` joeyli 2017-10-20 6:42 ` joeyli 2017-10-19 14:51 ` [PATCH 11/27] x86: Lock down IO port " David Howells 2017-10-19 14:51 ` David Howells 2017-10-20 6:43 ` joeyli 2017-10-20 6:43 ` joeyli 2017-10-19 14:52 ` [PATCH 12/27] x86/msr: Restrict MSR " David Howells 2017-10-19 14:52 ` David Howells 2017-10-20 6:43 ` joeyli 2017-10-20 6:43 ` joeyli 2017-10-20 18:09 ` Alan Cox 2017-10-20 18:09 ` Alan Cox 2017-10-20 20:48 ` David Howells 2017-10-20 20:48 ` David Howells 2017-10-20 20:48 ` David Howells 2017-10-21 4:39 ` joeyli 2017-10-21 4:39 ` joeyli 2017-10-23 14:49 ` David Howells 2017-10-23 14:49 ` David Howells 2017-10-23 14:49 ` David Howells 2017-10-25 14:03 ` joeyli 2017-10-25 14:03 ` joeyli 2017-10-19 14:52 ` [PATCH 13/27] asus-wmi: Restrict debugfs interface " David Howells 2017-10-19 14:52 ` David Howells 2017-10-20 6:44 ` joeyli 2017-10-20 6:44 ` joeyli 2017-10-19 14:52 ` [PATCH 14/27] ACPI: Limit access to custom_method " David Howells 2017-10-19 14:52 ` David Howells 2017-10-20 6:45 ` joeyli 2017-10-20 6:45 ` joeyli 2017-10-19 14:52 ` [PATCH 15/27] acpi: Ignore acpi_rsdp kernel param when the kernel has been " David Howells 2017-10-19 14:52 ` David Howells 2017-10-20 6:45 ` joeyli 2017-10-20 6:45 ` joeyli 2017-10-19 14:52 ` [PATCH 16/27] acpi: Disable ACPI table override if the kernel is " David Howells 2017-10-19 14:52 ` David Howells 2017-10-20 6:46 ` joeyli 2017-10-20 6:46 ` joeyli 2017-10-20 6:46 ` joeyli 2017-10-19 14:52 ` [PATCH 17/27] acpi: Disable APEI error injection " David Howells 2017-10-19 14:52 ` David Howells 2017-10-20 6:47 ` joeyli 2017-10-20 6:47 ` joeyli 2017-10-20 6:47 ` joeyli 2017-10-19 14:52 ` [PATCH 18/27] bpf: Restrict kernel image access functions when " David Howells 2017-10-19 14:52 ` David Howells 2017-10-19 22:18 ` Alexei Starovoitov 2017-10-19 22:18 ` Alexei Starovoitov 2017-10-20 2:47 ` joeyli 2017-10-20 2:47 ` joeyli 2017-10-20 8:08 ` David Howells 2017-10-20 8:08 ` David Howells 2017-10-20 15:57 ` jlee 2017-10-20 15:57 ` jlee at suse.com 2017-10-20 23:00 ` Alexei Starovoitov 2017-10-23 14:51 ` David Howells 2017-10-20 16:03 ` David Howells 2017-10-20 16:03 ` David Howells 2017-10-20 16:03 ` David Howells 2017-10-20 16:43 ` jlee 2017-10-20 16:43 ` jlee at suse.com 2017-10-23 14:53 ` David Howells 2017-10-23 14:53 ` David Howells 2017-10-25 7:07 ` joeyli 2017-10-25 7:07 ` joeyli 2017-10-25 7:07 ` joeyli 2017-10-19 22:48 ` David Howells 2017-10-19 22:48 ` David Howells 2017-10-19 23:31 ` Alexei Starovoitov 2017-10-19 23:31 ` Alexei Starovoitov 2017-10-19 23:31 ` Alexei Starovoitov 2017-11-09 17:15 ` David Howells 2017-11-09 17:15 ` David Howells 2017-10-19 14:52 ` David Howells [this message] 2017-10-19 14:52 ` [PATCH 19/27] scsi: Lock down the eata driver David Howells 2017-10-19 14:53 ` [PATCH 20/27] Prohibit PCMCIA CIS storage when the kernel is locked down David Howells 2017-10-19 14:53 ` David Howells 2017-10-19 14:53 ` [PATCH 21/27] Lock down TIOCSSERIAL David Howells 2017-10-19 14:53 ` David Howells 2017-10-19 14:53 ` [PATCH 22/27] Lock down module params that specify hardware parameters (eg. ioport) David Howells 2017-10-19 14:53 ` David Howells 2017-10-19 14:53 ` [PATCH 23/27] x86/mmiotrace: Lock down the testmmiotrace module David Howells 2017-10-19 14:53 ` David Howells 2017-10-19 14:53 ` [PATCH 24/27] debugfs: Disallow use of debugfs files when the kernel is locked down David Howells 2017-10-19 14:53 ` David Howells 2017-10-19 14:53 ` [PATCH 25/27] Lock down /proc/kcore David Howells 2017-10-19 14:53 ` David Howells 2017-10-21 2:11 ` James Morris 2017-10-21 2:11 ` James Morris 2017-10-23 14:56 ` David Howells 2017-10-23 14:56 ` David Howells 2017-10-19 14:53 ` [PATCH 26/27] efi: Add an EFI_SECURE_BOOT flag to indicate secure boot mode David Howells 2017-10-19 14:53 ` David Howells 2017-10-21 2:19 ` James Morris 2017-10-21 2:19 ` James Morris 2017-10-21 2:19 ` James Morris 2017-10-23 14:58 ` David Howells 2017-10-23 14:58 ` David Howells 2017-10-19 14:53 ` [PATCH 27/27] efi: Lock down the kernel if booted in " David Howells 2017-10-19 14:53 ` David Howells 2017-10-19 22:39 ` [PATCH 00/27] security, efi: Add kernel lockdown David Howells 2017-10-19 22:39 ` David Howells 2017-10-19 22:39 ` David Howells 2017-10-23 14:34 ` [PATCH 04/27] Restrict /dev/mem and /dev/kmem when the kernel is locked down David Howells 2017-10-23 14:34 ` David Howells 2017-10-23 14:34 ` David Howells 2017-10-24 10:48 ` Ethan Zhao 2017-10-24 10:48 ` Ethan Zhao 2017-10-24 10:48 ` Ethan Zhao 2017-10-24 14:56 ` David Howells 2017-10-24 14:56 ` David Howells 2017-11-02 22:01 ` [PATCH 00/27] security, efi: Add kernel lockdown Mimi Zohar 2017-11-02 22:01 ` Mimi Zohar 2017-11-02 22:04 ` Firmware signing -- " David Howells 2017-11-02 22:04 ` David Howells 2017-11-02 22:04 ` David Howells 2017-11-02 22:10 ` Mimi Zohar 2017-11-02 22:10 ` Mimi Zohar 2017-11-07 23:07 ` Luis R. Rodriguez 2017-11-07 23:07 ` Luis R. Rodriguez 2017-11-07 23:07 ` Luis R. Rodriguez 2017-11-08 6:15 ` AKASHI, Takahiro 2017-11-08 6:15 ` AKASHI, Takahiro 2017-11-08 6:15 ` AKASHI, Takahiro 2017-11-08 19:46 ` Luis R. Rodriguez 2017-11-08 19:46 ` Luis R. Rodriguez 2017-11-08 19:46 ` Luis R. Rodriguez 2017-11-09 1:48 ` AKASHI, Takahiro 2017-11-09 1:48 ` AKASHI, Takahiro 2017-11-09 1:48 ` AKASHI, Takahiro 2017-11-09 2:17 ` Mimi Zohar 2017-11-09 2:17 ` Mimi Zohar 2017-11-09 4:46 ` AKASHI, Takahiro 2017-11-09 4:46 ` AKASHI, Takahiro 2017-11-10 13:37 ` Mimi Zohar 2017-11-10 13:37 ` Mimi Zohar 2017-11-11 2:32 ` Alan Cox 2017-11-11 2:32 ` Alan Cox 2017-11-11 2:32 ` Alan Cox 2017-11-13 11:49 ` Mimi Zohar 2017-11-13 11:49 ` Mimi Zohar 2017-11-13 17:42 ` Luis R. Rodriguez 2017-11-13 17:42 ` Luis R. Rodriguez 2017-11-13 17:42 ` Luis R. Rodriguez 2017-11-13 21:08 ` Alan Cox 2017-11-13 21:08 ` Alan Cox 2017-12-04 19:51 ` Luis R. Rodriguez 2017-12-04 19:51 ` Luis R. Rodriguez 2017-12-04 19:51 ` Luis R. Rodriguez 2017-12-07 15:32 ` Alan Cox 2017-12-07 15:32 ` Alan Cox 2017-12-07 15:32 ` Alan Cox 2017-11-13 21:44 ` David Howells 2017-11-13 21:44 ` David Howells 2017-11-13 22:09 ` Linus Torvalds 2017-11-13 22:09 ` Linus Torvalds 2017-11-13 22:09 ` Linus Torvalds 2017-11-14 0:20 ` Alan Cox 2017-11-14 0:20 ` Alan Cox 2017-11-14 0:20 ` Alan Cox 2017-11-14 12:21 ` Mimi Zohar 2017-11-14 12:21 ` Mimi Zohar 2017-11-14 12:38 ` Greg Kroah-Hartman 2017-11-14 12:38 ` Greg Kroah-Hartman 2017-11-14 13:17 ` Mimi Zohar 2017-11-14 13:17 ` Mimi Zohar 2017-11-14 13:17 ` Mimi Zohar 2017-11-14 17:34 ` Linus Torvalds 2017-11-14 17:34 ` Linus Torvalds 2017-11-14 17:34 ` Linus Torvalds 2017-11-14 19:58 ` Matthew Garrett 2017-11-14 19:58 ` Matthew Garrett 2017-11-14 19:58 ` Matthew Garrett 2017-11-14 20:18 ` Linus Torvalds 2017-11-14 20:18 ` Linus Torvalds 2017-11-14 20:18 ` Linus Torvalds 2017-11-14 20:31 ` Matthew Garrett 2017-11-14 20:31 ` Matthew Garrett 2017-11-14 20:31 ` Matthew Garrett 2017-11-14 20:35 ` Linus Torvalds 2017-11-14 20:35 ` Linus Torvalds 2017-11-14 20:37 ` Matthew Garrett 2017-11-14 20:37 ` Matthew Garrett 2017-11-14 20:37 ` Matthew Garrett 2017-11-14 20:50 ` Luis R. Rodriguez 2017-11-14 20:50 ` Luis R. Rodriguez 2017-11-14 20:55 ` Matthew Garrett 2017-11-14 20:55 ` Matthew Garrett 2017-11-14 20:55 ` Matthew Garrett 2017-11-14 22:14 ` James Bottomley 2017-11-14 22:14 ` James Bottomley 2017-11-14 22:17 ` Matthew Garrett 2017-11-14 22:17 ` Matthew Garrett 2017-11-14 22:17 ` Matthew Garrett 2017-11-14 22:31 ` James Bottomley 2017-11-14 22:31 ` James Bottomley 2017-11-14 22:31 ` James Bottomley 2017-11-14 22:34 ` Matthew Garrett 2017-11-14 22:34 ` Matthew Garrett 2017-11-14 22:34 ` Matthew Garrett 2017-11-15 11:49 ` Mimi Zohar 2017-11-15 11:49 ` Mimi Zohar 2017-11-15 11:49 ` Mimi Zohar 2017-11-15 17:52 ` Luis R. Rodriguez 2017-11-15 17:52 ` Luis R. Rodriguez 2017-11-15 17:52 ` Luis R. Rodriguez 2017-11-15 19:56 ` Mimi Zohar 2017-11-15 19:56 ` Mimi Zohar 2017-11-15 20:46 ` Luis R. Rodriguez 2017-11-15 20:46 ` Luis R. Rodriguez 2017-11-16 0:05 ` Mimi Zohar 2017-11-16 0:05 ` Mimi Zohar 2017-12-05 10:27 ` Pavel Machek 2017-12-05 10:27 ` Pavel Machek 2017-12-07 23:02 ` Luis R. Rodriguez 2017-12-07 23:02 ` Luis R. Rodriguez 2017-12-07 23:02 ` Luis R. Rodriguez 2017-12-08 17:11 ` Alan Cox 2017-12-08 17:11 ` Alan Cox 2017-12-08 17:11 ` Alan Cox 2017-11-10 1:46 ` Luis R. Rodriguez 2017-11-10 1:46 ` Luis R. Rodriguez 2017-11-10 1:46 ` Luis R. Rodriguez 2017-11-10 13:45 ` Mimi Zohar 2017-11-10 13:45 ` Mimi Zohar 2017-11-10 13:45 ` Mimi Zohar 2017-11-13 18:50 ` Luis R. Rodriguez 2017-11-13 18:50 ` Luis R. Rodriguez 2017-11-13 18:50 ` Luis R. Rodriguez 2017-11-13 19:08 ` Luis R. Rodriguez 2017-11-13 19:08 ` Luis R. Rodriguez 2017-11-13 19:08 ` Luis R. Rodriguez 2017-11-08 20:01 ` Mimi Zohar 2017-11-08 20:01 ` Mimi Zohar 2017-11-08 20:09 ` Luis R. Rodriguez 2017-11-08 20:09 ` Luis R. Rodriguez
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