Upstream information
Description
In the Linux kernel, the following vulnerability has been resolved:arm64: probes: Fix uprobes for big-endian kernels
The arm64 uprobes code is broken for big-endian kernels as it doesn't
convert the in-memory instruction encoding (which is always
little-endian) into the kernel's native endianness before analyzing and
simulating instructions. This may result in a few distinct problems:
* The kernel may may erroneously reject probing an instruction which can
safely be probed.
* The kernel may erroneously erroneously permit stepping an
instruction out-of-line when that instruction cannot be stepped
out-of-line safely.
* The kernel may erroneously simulate instruction incorrectly dur to
interpretting the byte-swapped encoding.
The endianness mismatch isn't caught by the compiler or sparse because:
* The arch_uprobe::{insn,ixol} fields are encoded as arrays of u8, so
the compiler and sparse have no idea these contain a little-endian
32-bit value. The core uprobes code populates these with a memcpy()
which similarly does not handle endianness.
* While the uprobe_opcode_t type is an alias for __le32, both
arch_uprobe_analyze_insn() and arch_uprobe_skip_sstep() cast from u8[]
to the similarly-named probe_opcode_t, which is an alias for u32.
Hence there is no endianness conversion warning.
Fix this by changing the arch_uprobe::{insn,ixol} fields to __le32 and
adding the appropriate __le32_to_cpu() conversions prior to consuming
the instruction encoding. The core uprobes copies these fields as opaque
ranges of bytes, and so is unaffected by this change.
At the same time, remove MAX_UINSN_BYTES and consistently use
AARCH64_INSN_SIZE for clarity.
Tested with the following:
| #include <stdio.h>
| #include <stdbool.h>
|
| #define noinline __attribute__((noinline))
|
| static noinline void *adrp_self(void)
| {
| void *addr;
|
| asm volatile(
| " adrp %x0, adrp_self\n"
| " add %x0, %x0, :lo12:adrp_self\n"
| : "=r" (addr));
| }
|
|
| int main(int argc, char *argv)
| {
| void *ptr = adrp_self();
| bool equal = (ptr == adrp_self);
|
| printf("adrp_self => %p\n"
| "adrp_self() => %p\n"
| "%s\n",
| adrp_self, ptr, equal ? "EQUAL" : "NOT EQUAL");
|
| return 0;
| }
.... where the adrp_self() function was compiled to:
| 00000000004007e0 <adrp_self>:
| 4007e0: 90000000 adrp x0, 400000 <__ehdr_start>
| 4007e4: 911f8000 add x0, x0, #0x7e0
| 4007e8: d65f03c0 ret
Before this patch, the ADRP is not recognized, and is assumed to be
steppable, resulting in corruption of the result:
| # ./adrp-self
| adrp_self => 0x4007e0
| adrp_self() => 0x4007e0
| EQUAL
| # echo 'p /root/adrp-self:0x007e0' > /sys/kernel/tracing/uprobe_events
| # echo 1 > /sys/kernel/tracing/events/uprobes/enable
| # ./adrp-self
| adrp_self => 0x4007e0
| adrp_self() => 0xffffffffff7e0
| NOT EQUAL
After this patch, the ADRP is correctly recognized and simulated:
| # ./adrp-self
| adrp_self => 0x4007e0
| adrp_self() => 0x4007e0
| EQUAL
| #
| # echo 'p /root/adrp-self:0x007e0' > /sys/kernel/tracing/uprobe_events
| # echo 1 > /sys/kernel/tracing/events/uprobes/enable
| # ./adrp-self
| adrp_self => 0x4007e0
| adrp_self() => 0x4007e0
| EQUAL
SUSE information
Overall state of this security issue: Pending
This issue is currently rated as having moderate severity.
SUSE | |
---|---|
Base Score | 5.5 |
Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Attack Vector | Local |
Attack Complexity | Low |
Privileges Required | Low |
User Interaction | None |
Scope | Unchanged |
Confidentiality Impact | None |
Integrity Impact | None |
Availability Impact | High |
CVSSv3 Version | 3.1 |
Status of this issue by product and package
Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification. The updates are grouped by state of their lifecycle. SUSE product lifecycles are documented on the lifecycle page.
Product(s) | Source package | State |
---|---|---|
Products under general support and receiving all security fixes. | ||
SUSE Linux Enterprise Desktop 15 SP5 | kernel-default | Not affected |
SUSE Linux Enterprise Desktop 15 SP5 | kernel-source | Not affected |
SUSE Linux Enterprise Desktop 15 SP6 | kernel-default | Not affected |
SUSE Linux Enterprise Desktop 15 SP6 | kernel-source | Not affected |
SUSE Linux Enterprise High Performance Computing 15 SP5 | kernel-default | Not affected |
SUSE Linux Enterprise High Performance Computing 15 SP5 | kernel-source | Not affected |
SUSE Linux Enterprise High Performance Computing 15 SP5 | kernel-source-azure | Not affected |
SUSE Linux Enterprise High Performance Computing 15 SP6 | kernel-default | Not affected |
SUSE Linux Enterprise High Performance Computing 15 SP6 | kernel-source | Not affected |
SUSE Linux Enterprise High Performance Computing 15 SP6 | kernel-source-azure | Not affected |
SUSE Linux Enterprise Live Patching 15 SP5 | kernel-default | Not affected |
SUSE Linux Enterprise Live Patching 15 SP5 | kernel-source | Not affected |
SUSE Linux Enterprise Live Patching 15 SP6 | kernel-default | Not affected |
SUSE Linux Enterprise Live Patching 15 SP6 | kernel-source | Not affected |
SUSE Linux Enterprise Micro 5.1 | kernel-default | Affected |
SUSE Linux Enterprise Micro 5.1 | kernel-rt | Affected |
SUSE Linux Enterprise Micro 5.1 | kernel-source | Affected |
SUSE Linux Enterprise Micro 5.1 | kernel-source-rt | Affected |
SUSE Linux Enterprise Micro 5.2 | kernel-default | Affected |
SUSE Linux Enterprise Micro 5.2 | kernel-rt | Affected |
SUSE Linux Enterprise Micro 5.2 | kernel-source | Affected |
SUSE Linux Enterprise Micro 5.2 | kernel-source-rt | Affected |
SUSE Linux Enterprise Micro 5.3 | kernel-default | Affected |
SUSE Linux Enterprise Micro 5.3 | kernel-rt | Affected |
SUSE Linux Enterprise Micro 5.3 | kernel-source | Affected |
SUSE Linux Enterprise Micro 5.3 | kernel-source-rt | Affected |
SUSE Linux Enterprise Micro 5.4 | kernel-default | Affected |
SUSE Linux Enterprise Micro 5.4 | kernel-rt | Affected |
SUSE Linux Enterprise Micro 5.4 | kernel-source | Affected |
SUSE Linux Enterprise Micro 5.4 | kernel-source-rt | Affected |
SUSE Linux Enterprise Micro 5.5 | kernel-default | Not affected |
SUSE Linux Enterprise Micro 5.5 | kernel-source | Not affected |
SUSE Linux Enterprise Micro 5.5 | kernel-source-rt | Not affected |
SUSE Linux Enterprise Micro 6.0 | kernel-default | Not affected |
SUSE Linux Enterprise Micro 6.0 | kernel-source | Not affected |
SUSE Linux Enterprise Micro 6.0 | kernel-source-rt | Not affected |
SUSE Linux Enterprise Module for Basesystem 15 SP5 | kernel-default | Not affected |
SUSE Linux Enterprise Module for Basesystem 15 SP5 | kernel-source | Not affected |
SUSE Linux Enterprise Module for Basesystem 15 SP6 | kernel-default | Not affected |
SUSE Linux Enterprise Module for Basesystem 15 SP6 | kernel-source | Not affected |
SUSE Linux Enterprise Module for Development Tools 15 SP5 | kernel-default | Not affected |
SUSE Linux Enterprise Module for Development Tools 15 SP5 | kernel-source | Not affected |
SUSE Linux Enterprise Module for Development Tools 15 SP6 | kernel-default | Not affected |
SUSE Linux Enterprise Module for Development Tools 15 SP6 | kernel-source | Not affected |
SUSE Linux Enterprise Module for Public Cloud 15 SP5 | kernel-source-azure | Not affected |
SUSE Linux Enterprise Module for Public Cloud 15 SP6 | kernel-source-azure | Not affected |
SUSE Linux Enterprise Real Time 15 SP5 | kernel-source-rt | Not affected |
SUSE Linux Enterprise Real Time 15 SP6 | kernel-source-rt | Not affected |
SUSE Linux Enterprise Server 15 SP5 | kernel-default | Not affected |
SUSE Linux Enterprise Server 15 SP5 | kernel-source | Not affected |
SUSE Linux Enterprise Server 15 SP5 | kernel-source-azure | Not affected |
SUSE Linux Enterprise Server 15 SP6 | kernel-default | Not affected |
SUSE Linux Enterprise Server 15 SP6 | kernel-source | Not affected |
SUSE Linux Enterprise Server 15 SP6 | kernel-source-azure | Not affected |
SUSE Linux Enterprise Server for SAP Applications 15 SP5 | kernel-default | Not affected |
SUSE Linux Enterprise Server for SAP Applications 15 SP5 | kernel-source | Not affected |
SUSE Linux Enterprise Server for SAP Applications 15 SP5 | kernel-source-azure | Not affected |
SUSE Linux Enterprise Server for SAP Applications 15 SP6 | kernel-default | Not affected |
SUSE Linux Enterprise Server for SAP Applications 15 SP6 | kernel-source | Not affected |
SUSE Linux Enterprise Server for SAP Applications 15 SP6 | kernel-source-azure | Not affected |
SUSE Manager Proxy 4.3 | kernel-default | Affected |
SUSE Manager Proxy 4.3 | kernel-source | Affected |
SUSE Manager Retail Branch Server 4.3 | kernel-default | Affected |
SUSE Manager Retail Branch Server 4.3 | kernel-source | Affected |
SUSE Manager Server 4.3 | kernel-default | Affected |
SUSE Manager Server 4.3 | kernel-source | Affected |
SUSE Real Time Module 15 SP5 | kernel-source-rt | Not affected |
SUSE Real Time Module 15 SP6 | kernel-source-rt | Not affected |
openSUSE Leap 15.5 | kernel-default | Not affected |
openSUSE Leap 15.5 | kernel-source | Not affected |
openSUSE Leap 15.5 | kernel-source-azure | Not affected |
openSUSE Leap 15.5 | kernel-source-rt | Not affected |
openSUSE Leap 15.6 | kernel-default | Not affected |
openSUSE Leap 15.6 | kernel-source | Not affected |
openSUSE Leap 15.6 | kernel-source-azure | Not affected |
openSUSE Leap 15.6 | kernel-source-rt | Not affected |
Products under Long Term Service Pack support and receiving important and critical security fixes. | ||
SUSE Linux Enterprise Desktop 15 SP4 | kernel-source | Affected |
SUSE Linux Enterprise High Availability Extension 12 SP5 | kernel-default | Not affected |
SUSE Linux Enterprise High Availability Extension 12 SP5 | kernel-source | Not affected |
SUSE Linux Enterprise High Performance Computing 12 SP5 | kernel-default | Not affected |
SUSE Linux Enterprise High Performance Computing 12 SP5 | kernel-source | Not affected |
SUSE Linux Enterprise High Performance Computing 12 SP5 | kernel-source-azure | Not affected |
SUSE Linux Enterprise High Performance Computing 15 SP2 | kernel-source | Affected |
SUSE Linux Enterprise High Performance Computing 15 SP2-ESPOS | kernel-source | Affected |
SUSE Linux Enterprise High Performance Computing 15 SP2-LTSS | kernel-default | Affected |
SUSE Linux Enterprise High Performance Computing 15 SP2-LTSS | kernel-source | Affected |
SUSE Linux Enterprise High Performance Computing 15 SP3 | kernel-source | Affected |
SUSE Linux Enterprise High Performance Computing 15 SP3-ESPOS | kernel-source | Affected |
SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS | kernel-default | Affected |
SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS | kernel-source | Affected |
SUSE Linux Enterprise High Performance Computing 15 SP4 | kernel-source | Affected |
SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS | kernel-default | Affected |
SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS | kernel-source | Affected |
SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS | kernel-default | Affected |
SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS | kernel-source | Affected |
SUSE Linux Enterprise Live Patching 12 SP5 | kernel-default | Not affected |
SUSE Linux Enterprise Live Patching 12 SP5 | kernel-source | Not affected |
SUSE Linux Enterprise Live Patching 15 SP2 | kernel-default | Affected |
SUSE Linux Enterprise Live Patching 15 SP2 | kernel-source | Affected |
SUSE Linux Enterprise Live Patching 15 SP3 | kernel-default | Affected |
SUSE Linux Enterprise Live Patching 15 SP3 | kernel-source | Affected |
SUSE Linux Enterprise Live Patching 15 SP4 | kernel-default | Affected |
SUSE Linux Enterprise Live Patching 15 SP4 | kernel-source | Affected |
SUSE Linux Enterprise Module for Basesystem 15 SP2 | kernel-source | Affected |
SUSE Linux Enterprise Module for Basesystem 15 SP3 | kernel-source | Affected |
SUSE Linux Enterprise Module for Basesystem 15 SP4 | kernel-source | Affected |
SUSE Linux Enterprise Module for Development Tools 15 SP2 | kernel-source | Affected |
SUSE Linux Enterprise Module for Development Tools 15 SP3 | kernel-source | Affected |
SUSE Linux Enterprise Module for Development Tools 15 SP4 | kernel-source | Affected |
SUSE Linux Enterprise Server 11 SP4 LTSS EXTREME CORE | kernel-default | Not affected |
SUSE Linux Enterprise Server 11 SP4 LTSS EXTREME CORE | kernel-source | Not affected |
SUSE Linux Enterprise Server 12 SP5 | kernel-default | Not affected |
SUSE Linux Enterprise Server 12 SP5 | kernel-source | Not affected |
SUSE Linux Enterprise Server 12 SP5 | kernel-source-azure | Not affected |
SUSE Linux Enterprise Server 12 SP5-LTSS | kernel-default | Not affected |
SUSE Linux Enterprise Server 12 SP5-LTSS | kernel-source | Not affected |
SUSE Linux Enterprise Server 12 SP5-LTSS | kernel-source-azure | Not affected |
SUSE Linux Enterprise Server 15 SP2 | kernel-source | Affected |
SUSE Linux Enterprise Server 15 SP2-LTSS | kernel-default | Affected |
SUSE Linux Enterprise Server 15 SP2-LTSS | kernel-source | Affected |
SUSE Linux Enterprise Server 15 SP3 | kernel-source | Affected |
SUSE Linux Enterprise Server 15 SP3-LTSS | kernel-default | Affected |
SUSE Linux Enterprise Server 15 SP3-LTSS | kernel-source | Affected |
SUSE Linux Enterprise Server 15 SP4 | kernel-source | Affected |
SUSE Linux Enterprise Server 15 SP4-LTSS | kernel-default | Affected |
SUSE Linux Enterprise Server 15 SP4-LTSS | kernel-source | Affected |
SUSE Linux Enterprise Server for SAP Applications 12 SP5 | kernel-default | Not affected |
SUSE Linux Enterprise Server for SAP Applications 12 SP5 | kernel-source | Not affected |
SUSE Linux Enterprise Server for SAP Applications 12 SP5 | kernel-source-azure | Not affected |
SUSE Linux Enterprise Server for SAP Applications 15 SP2 | kernel-default | Affected |
SUSE Linux Enterprise Server for SAP Applications 15 SP2 | kernel-source | Affected |
SUSE Linux Enterprise Server for SAP Applications 15 SP3 | kernel-default | Affected |
SUSE Linux Enterprise Server for SAP Applications 15 SP3 | kernel-source | Affected |
SUSE Linux Enterprise Server for SAP Applications 15 SP4 | kernel-default | Affected |
SUSE Linux Enterprise Server for SAP Applications 15 SP4 | kernel-source | Affected |
Products past their end of life and not receiving proactive updates anymore. | ||
HPE Helion OpenStack 8 | kernel-source | Not affected |
SUSE CaaS Platform 4.0 | kernel-source | Affected |
SUSE CaaS Platform Toolchain 3 | kernel-source | Not affected |
SUSE Enterprise Storage 6 | kernel-source | Affected |
SUSE Enterprise Storage 7 | kernel-source | Affected |
SUSE Enterprise Storage 7.1 | kernel-source | Affected |
SUSE Linux Enterprise Desktop 11 SP4 | kernel-source | Not affected |
SUSE Linux Enterprise Desktop 12 SP1 | kernel-source | Unsupported |
SUSE Linux Enterprise Desktop 12 SP2 | kernel-source | Not affected |
SUSE Linux Enterprise Desktop 12 SP3 | kernel-source | Not affected |
SUSE Linux Enterprise Desktop 12 SP4 | kernel-source | Affected |
SUSE Linux Enterprise Desktop 15 | kernel-source | Affected |
SUSE Linux Enterprise Desktop 15 SP1 | kernel-source | Affected |
SUSE Linux Enterprise Desktop 15 SP2 | kernel-source | Affected |
SUSE Linux Enterprise Desktop 15 SP3 | kernel-source | Affected |
SUSE Linux Enterprise High Performance Computing 15 | kernel-source | Affected |
SUSE Linux Enterprise High Performance Computing 15 SP1 | kernel-source | Affected |
SUSE Linux Enterprise High Performance Computing 15 SP1-ESPOS | kernel-source | Affected |
SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS | kernel-source | Affected |
SUSE Linux Enterprise High Performance Computing 15-ESPOS | kernel-source | Affected |
SUSE Linux Enterprise High Performance Computing 15-LTSS | kernel-source | Affected |
SUSE Linux Enterprise Micro 5.0 | kernel-default | Affected |
SUSE Linux Enterprise Module for Basesystem 15 | kernel-source | Affected |
SUSE Linux Enterprise Module for Basesystem 15 SP1 | kernel-source | Affected |
SUSE Linux Enterprise Module for Development Tools 15 | kernel-source | Affected |
SUSE Linux Enterprise Module for Development Tools 15 SP1 | kernel-source | Affected |
SUSE Linux Enterprise Point of Sale 12 SP2-CLIENT | kernel-source | Not affected |
SUSE Linux Enterprise Real Time 12 SP5 | kernel-source-rt | Not affected |
SUSE Linux Enterprise Real Time 15 SP2 | kernel-source | Affected |
SUSE Linux Enterprise Real Time 15 SP3 | kernel-source | Affected |
SUSE Linux Enterprise Real Time 15 SP3 | kernel-source-rt | Affected |
SUSE Linux Enterprise Real Time 15 SP4 | kernel-source | Affected |
SUSE Linux Enterprise Real Time 15 SP4 | kernel-source-rt | Affected |
SUSE Linux Enterprise Server 11 SP4 | kernel-source | Not affected |
SUSE Linux Enterprise Server 11 SP4 LTSS | kernel-default | Not affected |
SUSE Linux Enterprise Server 11 SP4 LTSS | kernel-source | Not affected |
SUSE Linux Enterprise Server 11 SP4-LTSS | kernel-source | Not affected |
SUSE Linux Enterprise Server 12 SP1 | kernel-source | Unsupported |
SUSE Linux Enterprise Server 12 SP1-LTSS | kernel-source | Unsupported |
SUSE Linux Enterprise Server 12 SP2 | kernel-source | Not affected |
SUSE Linux Enterprise Server 12 SP2-BCL | kernel-source | Not affected |
SUSE Linux Enterprise Server 12 SP2-ESPOS | kernel-source | Not affected |
SUSE Linux Enterprise Server 12 SP2-LTSS | kernel-default | Not affected |
SUSE Linux Enterprise Server 12 SP2-LTSS | kernel-source | Not affected |
SUSE Linux Enterprise Server 12 SP3 | kernel-source | Not affected |
SUSE Linux Enterprise Server 12 SP3-BCL | kernel-source | Not affected |
SUSE Linux Enterprise Server 12 SP3-ESPOS | kernel-source | Not affected |
SUSE Linux Enterprise Server 12 SP3-LTSS | kernel-source | Not affected |
SUSE Linux Enterprise Server 12 SP4 | kernel-source | Affected |
SUSE Linux Enterprise Server 12 SP4-ESPOS | kernel-source | Affected |
SUSE Linux Enterprise Server 12 SP4-LTSS | kernel-default | Affected |
SUSE Linux Enterprise Server 12 SP4-LTSS | kernel-source | Affected |
SUSE Linux Enterprise Server 15 | kernel-source | Affected |
SUSE Linux Enterprise Server 15 SP1 | kernel-source | Affected |
SUSE Linux Enterprise Server 15 SP1-BCL | kernel-source | Affected |
SUSE Linux Enterprise Server 15 SP1-LTSS | kernel-default | Affected |
SUSE Linux Enterprise Server 15 SP1-LTSS | kernel-source | Affected |
SUSE Linux Enterprise Server 15 SP2-BCL | kernel-source | Affected |
SUSE Linux Enterprise Server 15 SP3-BCL | kernel-source | Affected |
SUSE Linux Enterprise Server 15-LTSS | kernel-default | Affected |
SUSE Linux Enterprise Server 15-LTSS | kernel-source | Affected |
SUSE Linux Enterprise Server for Raspberry Pi 12 SP2 | kernel-source | Not affected |
SUSE Linux Enterprise Server for SAP Applications 12 SP1 | kernel-source | Unsupported |
SUSE Linux Enterprise Server for SAP Applications 12 SP2 | kernel-source | Not affected |
SUSE Linux Enterprise Server for SAP Applications 12 SP3 | kernel-source | Not affected |
SUSE Linux Enterprise Server for SAP Applications 12 SP4 | kernel-source | Affected |
SUSE Linux Enterprise Server for SAP Applications 15 | kernel-source | Affected |
SUSE Linux Enterprise Server for SAP Applications 15 SP1 | kernel-source | Affected |
SUSE Manager Proxy 4.0 | kernel-source | Affected |
SUSE Manager Proxy 4.1 | kernel-source | Affected |
SUSE Manager Proxy 4.2 | kernel-source | Affected |
SUSE Manager Retail Branch Server 4.0 | kernel-source | Affected |
SUSE Manager Retail Branch Server 4.1 | kernel-source | Affected |
SUSE Manager Retail Branch Server 4.2 | kernel-source | Affected |
SUSE Manager Server 4.0 | kernel-source | Affected |
SUSE Manager Server 4.1 | kernel-source | Affected |
SUSE Manager Server 4.2 | kernel-source | Affected |
SUSE OpenStack Cloud 7 | kernel-source | Not affected |
SUSE OpenStack Cloud 8 | kernel-source | Not affected |
SUSE OpenStack Cloud 9 | kernel-source | Affected |
SUSE OpenStack Cloud Crowbar 8 | kernel-source | Not affected |
SUSE OpenStack Cloud Crowbar 9 | kernel-source | Affected |
SUSE Real Time Module 15 SP3 | kernel-source-rt | Affected |
SUSE Real Time Module 15 SP4 | kernel-source-rt | Affected |
openSUSE Leap 15.3 | kernel-source | Affected |
openSUSE Leap 15.3 | kernel-source-rt | Affected |
openSUSE Leap 15.4 | kernel-source | Affected |
openSUSE Leap 15.4 | kernel-source-azure | Unsupported |
openSUSE Leap 15.4 | kernel-source-rt | Affected |
Products at an unknown state of their lifecycle. | ||
SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security | kernel-source | Not affected |
SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security | kernel-source-azure | Not affected |
SUSE Timeline for this CVE
CVE page created: Fri Nov 8 08:00:16 2024CVE page last modified: Tue Nov 12 15:16:51 2024