MDS CPU bug present and SMT on, data leak possible(dmesg warnings)

Aveon · 5 September 2020 13:46

Hello,
I was just checking up if everything is alright with my laptop until I check my dmesg and i have some warnings, can someone tell it’s not serious or something.

inxi

$ inxi -Fxxz -no-host
System:    Host: Homelaptop Kernel: 5.8.5-2-MANJARO x86_64 bits: 64 compiler: N/A 
           Desktop: KDE Plasma 5.19.5 tk: Qt 5.15.0 wm: kwin_x11 dm: SDDM Distro: Manjaro Linux 
Machine:   Type: Laptop System: Dell product: Latitude E5430 non-vPro v: 01 serial: <filter> 
           Chassis: type: 9 serial: <filter> 
           Mobo: Dell model: 0F5PHF v: A00 serial: <filter> BIOS: Dell v: A03 date: 06/03/2012 
Battery:   ID-1: BAT0 charge: 0.1 Wh condition: 1.5/62.2 Wh (2%) volts: 9.0/11.1 
           model: LGC-LGC2.8 DELL HMYXT28 serial: <filter> status: Charging 
CPU:       Topology: Dual Core model: Intel Core i5-3320M bits: 64 type: MT MCP arch: Ivy Bridge 
           rev: 9 L2 cache: 3072 KiB 
           flags: avx lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx bogomips: 20743 
           Speed: 1429 MHz min/max: 1200/3300 MHz Core speeds (MHz): 1: 1196 2: 1196 3: 1196 4: 1197 
Graphics:  Device-1: Intel 3rd Gen Core processor Graphics vendor: Dell driver: i915 v: kernel 
           bus ID: 00:02.0 chip ID: 8086:0166 
           Device-2: Microdia type: USB driver: uvcvideo bus ID: 1-1.5:3 chip ID: 0c45:6449 
           Display: x11 server: X.Org 1.20.9 compositor: kwin_x11 driver: intel 
           unloaded: modesetting alternate: fbdev,vesa resolution: 1366x768~60Hz s-dpi: 96 
           OpenGL: renderer: Mesa DRI Intel HD Graphics 4000 (IVB GT2) v: 4.2 Mesa 20.1.6 
           compat-v: 3.0 direct render: Yes 
Audio:     Device-1: Intel 7 Series/C216 Family High Definition Audio vendor: Dell 
           driver: snd_hda_intel v: kernel bus ID: 00:1b.0 chip ID: 8086:1e20 
           Sound Server: ALSA v: k5.8.5-2-MANJARO 
Network:   Device-1: Intel Centrino Ultimate-N 6300 driver: iwlwifi v: kernel port: f040 
           bus ID: 02:00.0 chip ID: 8086:422b 
           IF: wlp2s0 state: up mac: <filter> 
           Device-2: Broadcom and subsidiaries NetXtreme BCM5761 Gigabit Ethernet PCIe vendor: Dell 
           driver: tg3 v: kernel port: f040 bus ID: 0c:00.0 chip ID: 14e4:1681 
           IF: enp12s0 state: down mac: <filter> 
Drives:    Local Storage: total: 465.76 GiB used: 201.88 GiB (43.3%) 
           ID-1: /dev/sda vendor: Western Digital model: WD5000LPLX-75ZNTT0 size: 465.76 GiB 
           speed: 6.0 Gb/s serial: <filter> 
RAID:      Hardware-1: Intel 82801 Mobile SATA Controller [RAID mode] driver: ahci v: 3.0 
           bus ID: 00:1f.2 chip ID: 8086.282a 
Partition: ID-1: / size: 457.45 GiB used: 201.88 GiB (44.1%) fs: ext4 dev: /dev/sda1 
Swap:      ID-1: swap-1 type: file size: 256.0 MiB used: 0 KiB (0.0%) priority: 50 
           file: /var/lib/systemd-swap/swapfc/1 
Unmounted: Message: No unmounted partitions found. 
Sensors:   System Temperatures: cpu: 56.0 C mobo: 44.0 C sodimm: 44.0 C 
           Fan Speeds (RPM): cpu: 2806 
Info:      Processes: 233 Uptime: 21m Memory: 3.73 GiB used: 1.39 GiB (37.4%) Init: systemd v: 246 
           Compilers: gcc: 10.2.0 clang: 10.0.1 Packages: 1421 pacman: 1401 flatpak: 4 snap: 16 
           Shell: Bash v: 5.0.18 running in: konsole inxi: 3.1.05

dmesg

 sudo dmesg -l emerg,alert,crit,err,warn  
[    0.101900] MDS CPU bug present and SMT on, data leak possible. See https://www.kernel.org/doc/html/latest/admin-guide/hw-vuln/mds.html for more details.
[    0.101900]  #3
[    0.103996] ENERGY_PERF_BIAS: Set to 'normal', was 'performance'
[    2.080213] i8042: Warning: Keylock active
[    2.138774] mmc0: Internal clock never stabilised.
[    2.138775] mmc0: sdhci: ============ SDHCI REGISTER DUMP ===========
[    2.138783] mmc0: sdhci: Sys addr:  0x00000000 | Version:  0x0000c001
[    2.138791] mmc0: sdhci: Blk size:  0x00000000 | Blk cnt:  0x00000000
[    2.138798] mmc0: sdhci: Argument:  0x00000000 | Trn mode: 0x00000000
[    2.138804] mmc0: sdhci: Present:   0x01f70000 | Host ctl: 0x00000000
[    2.138812] mmc0: sdhci: Power:     0x0000000f | Blk gap:  0x00000000
[    2.138819] mmc0: sdhci: Wake-up:   0x00000000 | Clock:    0x00001003
[    2.138826] mmc0: sdhci: Timeout:   0x00000000 | Int stat: 0x00000000
[    2.138834] mmc0: sdhci: Int enab:  0x00ff0083 | Sig enab: 0x00ff0083
[    2.138841] mmc0: sdhci: ACmd stat: 0x00000000 | Slot int: 0x00000000
[    2.138848] mmc0: sdhci: Caps:      0x21e608b2 | Caps_1:   0x00002077
[    2.138856] mmc0: sdhci: Cmd:       0x00000000 | Max curr: 0x00000064
[    2.138863] mmc0: sdhci: Resp[0]:   0x00000000 | Resp[1]:  0x00000000
[    2.138871] mmc0: sdhci: Resp[2]:   0x00000000 | Resp[3]:  0x00000000
[    2.138875] mmc0: sdhci: Host ctl2: 0x00000000
[    2.138875] mmc0: sdhci: ============================================
[    2.158898] mmc0: Internal clock never stabilised.
[    2.158899] mmc0: sdhci: ============ SDHCI REGISTER DUMP ===========
[    2.158906] mmc0: sdhci: Sys addr:  0x00000000 | Version:  0x0000c001
[    2.158914] mmc0: sdhci: Blk size:  0x00000000 | Blk cnt:  0x00000000
[    2.158921] mmc0: sdhci: Argument:  0x00000000 | Trn mode: 0x00000000
[    2.158928] mmc0: sdhci: Present:   0x01f70000 | Host ctl: 0x00000000
[    2.158935] mmc0: sdhci: Power:     0x0000000f | Blk gap:  0x00000000
[    2.158942] mmc0: sdhci: Wake-up:   0x00000000 | Clock:    0x00001003
[    2.158950] mmc0: sdhci: Timeout:   0x00000000 | Int stat: 0x00000000
[    2.158956] mmc0: sdhci: Int enab:  0x00ff0083 | Sig enab: 0x00ff0083
[    2.158964] mmc0: sdhci: ACmd stat: 0x00000000 | Slot int: 0x00000000
[    2.158970] mmc0: sdhci: Caps:      0x21e608b2 | Caps_1:   0x00002077
[    2.158978] mmc0: sdhci: Cmd:       0x00000000 | Max curr: 0x00000064
[    2.158985] mmc0: sdhci: Resp[0]:   0x00000000 | Resp[1]:  0x00000000
[    2.158992] mmc0: sdhci: Resp[2]:   0x00000000 | Resp[3]:  0x00000000
[    2.158995] mmc0: sdhci: Host ctl2: 0x00000000
[    2.158996] mmc0: sdhci: ============================================
[    2.209475] mmc0: Internal clock never stabilised.
[    2.209476] mmc0: sdhci: ============ SDHCI REGISTER DUMP ===========
[    2.209484] mmc0: sdhci: Sys addr:  0x00000000 | Version:  0x0000c001
[    2.209491] mmc0: sdhci: Blk size:  0x00000000 | Blk cnt:  0x00000000
[    2.209498] mmc0: sdhci: Argument:  0x00000000 | Trn mode: 0x00000000
[    2.209514] mmc0: sdhci: Present:   0x01f70000 | Host ctl: 0x00000000
[    2.209521] mmc0: sdhci: Power:     0x0000000f | Blk gap:  0x00000000
[    2.209528] mmc0: sdhci: Wake-up:   0x00000000 | Clock:    0x00001003
[    2.209534] mmc0: sdhci: Timeout:   0x00000000 | Int stat: 0x00000000
[    2.209542] mmc0: sdhci: Int enab:  0x00ff0083 | Sig enab: 0x00ff0083
[    2.209549] mmc0: sdhci: ACmd stat: 0x00000000 | Slot int: 0x00000000
[    2.209555] mmc0: sdhci: Caps:      0x21e608b2 | Caps_1:   0x00002077
[    2.209563] mmc0: sdhci: Cmd:       0x00000000 | Max curr: 0x00000064
[    2.209570] mmc0: sdhci: Resp[0]:   0x00000000 | Resp[1]:  0x00000000
[    2.209577] mmc0: sdhci: Resp[2]:   0x00000000 | Resp[3]:  0x00000000
[    2.209581] mmc0: sdhci: Host ctl2: 0x00000000
[    2.209581] mmc0: sdhci: ============================================
[    2.229600] mmc0: Internal clock never stabilised.
[    2.229601] mmc0: sdhci: ============ SDHCI REGISTER DUMP ===========
[    2.229609] mmc0: sdhci: Sys addr:  0x00000000 | Version:  0x0000c001
[    2.229617] mmc0: sdhci: Blk size:  0x00000000 | Blk cnt:  0x00000000
[    2.229624] mmc0: sdhci: Argument:  0x00000000 | Trn mode: 0x00000000
[    2.229631] mmc0: sdhci: Present:   0x01f70000 | Host ctl: 0x00000000
[    2.229638] mmc0: sdhci: Power:     0x0000000f | Blk gap:  0x00000000
[    2.229645] mmc0: sdhci: Wake-up:   0x00000000 | Clock:    0x00001003
[    2.229653] mmc0: sdhci: Timeout:   0x00000000 | Int stat: 0x00000000
[    2.229660] mmc0: sdhci: Int enab:  0x00ff0083 | Sig enab: 0x00ff0083
[    2.229667] mmc0: sdhci: ACmd stat: 0x00000000 | Slot int: 0x00000000
[    2.229675] mmc0: sdhci: Caps:      0x21e608b2 | Caps_1:   0x00002077
[    2.229682] mmc0: sdhci: Cmd:       0x00000000 | Max curr: 0x00000064
[    2.229690] mmc0: sdhci: Resp[0]:   0x00000000 | Resp[1]:  0x00000000
[    2.229697] mmc0: sdhci: Resp[2]:   0x00000000 | Resp[3]:  0x00000000
[    2.229701] mmc0: sdhci: Host ctl2: 0x00000000
[    2.229702] mmc0: sdhci: ============================================
[    2.282874] mmc0: Internal clock never stabilised.
[    2.282876] mmc0: sdhci: ============ SDHCI REGISTER DUMP ===========
[    2.282885] mmc0: sdhci: Sys addr:  0x00000000 | Version:  0x0000c001
[    2.282892] mmc0: sdhci: Blk size:  0x00000000 | Blk cnt:  0x00000000
[    2.282900] mmc0: sdhci: Argument:  0x00000000 | Trn mode: 0x00000000
[    2.282907] mmc0: sdhci: Present:   0x01f70000 | Host ctl: 0x00000000
[    2.282915] mmc0: sdhci: Power:     0x0000000f | Blk gap:  0x00000000
[    2.282923] mmc0: sdhci: Wake-up:   0x00000000 | Clock:    0x00002003
[    2.282930] mmc0: sdhci: Timeout:   0x00000000 | Int stat: 0x00000000
[    2.282938] mmc0: sdhci: Int enab:  0x00ff0083 | Sig enab: 0x00ff0083
[    2.282945] mmc0: sdhci: ACmd stat: 0x00000000 | Slot int: 0x00000000
[    2.282953] mmc0: sdhci: Caps:      0x21e608b2 | Caps_1:   0x00002077
[    2.282961] mmc0: sdhci: Cmd:       0x00000000 | Max curr: 0x00000064
[    2.282968] mmc0: sdhci: Resp[0]:   0x00000000 | Resp[1]:  0x00000000
[    2.282976] mmc0: sdhci: Resp[2]:   0x00000000 | Resp[3]:  0x00000000
[    2.282980] mmc0: sdhci: Host ctl2: 0x00000000
[    2.282981] mmc0: sdhci: ============================================
[    2.303010] mmc0: Internal clock never stabilised.
[    2.303012] mmc0: sdhci: ============ SDHCI REGISTER DUMP ===========
[    2.303019] mmc0: sdhci: Sys addr:  0x00000000 | Version:  0x0000c001
[    2.303027] mmc0: sdhci: Blk size:  0x00000000 | Blk cnt:  0x00000000
[    2.303034] mmc0: sdhci: Argument:  0x00000000 | Trn mode: 0x00000000
[    2.303042] mmc0: sdhci: Present:   0x01f70000 | Host ctl: 0x00000000
[    2.303049] mmc0: sdhci: Power:     0x0000000f | Blk gap:  0x00000000
[    2.303056] mmc0: sdhci: Wake-up:   0x00000000 | Clock:    0x00002003
[    2.303064] mmc0: sdhci: Timeout:   0x00000000 | Int stat: 0x00000000
[    2.303071] mmc0: sdhci: Int enab:  0x00ff0083 | Sig enab: 0x00ff0083
[    2.303079] mmc0: sdhci: ACmd stat: 0x00000000 | Slot int: 0x00000000
[    2.303086] mmc0: sdhci: Caps:      0x21e608b2 | Caps_1:   0x00002077
[    2.303093] mmc0: sdhci: Cmd:       0x00000000 | Max curr: 0x00000064
[    2.303101] mmc0: sdhci: Resp[0]:   0x00000000 | Resp[1]:  0x00000000
[    2.303107] mmc0: sdhci: Resp[2]:   0x00000000 | Resp[3]:  0x00000000
[    2.303111] mmc0: sdhci: Host ctl2: 0x00000000
[    2.303112] mmc0: sdhci: ============================================
[    2.357862] mmc0: Internal clock never stabilised.
[    2.357863] mmc0: sdhci: ============ SDHCI REGISTER DUMP ===========
[    2.357872] mmc0: sdhci: Sys addr:  0x00000000 | Version:  0x0000c001
[    2.357880] mmc0: sdhci: Blk size:  0x00000000 | Blk cnt:  0x00000000
[    2.357887] mmc0: sdhci: Argument:  0x00000000 | Trn mode: 0x00000000
[    2.357895] mmc0: sdhci: Present:   0x01f70000 | Host ctl: 0x00000000
[    2.357903] mmc0: sdhci: Power:     0x0000000f | Blk gap:  0x00000000
[    2.357911] mmc0: sdhci: Wake-up:   0x00000000 | Clock:    0x00004003
[    2.357918] mmc0: sdhci: Timeout:   0x00000000 | Int stat: 0x00000000
[    2.357926] mmc0: sdhci: Int enab:  0x00ff0083 | Sig enab: 0x00ff0083
[    2.357934] mmc0: sdhci: ACmd stat: 0x00000000 | Slot int: 0x00000000
[    2.357941] mmc0: sdhci: Caps:      0x21e608b2 | Caps_1:   0x00002077
[    2.357949] mmc0: sdhci: Cmd:       0x00000000 | Max curr: 0x00000064
[    2.357957] mmc0: sdhci: Resp[0]:   0x00000000 | Resp[1]:  0x00000000
[    2.357964] mmc0: sdhci: Resp[2]:   0x00000000 | Resp[3]:  0x00000000
[    2.357969] mmc0: sdhci: Host ctl2: 0x00000000
[    2.357970] mmc0: sdhci: ============================================
[    2.377996] mmc0: Internal clock never stabilised.
[    2.377997] mmc0: sdhci: ============ SDHCI REGISTER DUMP ===========
[    2.378005] mmc0: sdhci: Sys addr:  0x00000000 | Version:  0x0000c001
[    2.378012] mmc0: sdhci: Blk size:  0x00000000 | Blk cnt:  0x00000000
[    2.378019] mmc0: sdhci: Argument:  0x00000000 | Trn mode: 0x00000000
[    2.378026] mmc0: sdhci: Present:   0x01f70000 | Host ctl: 0x00000000
[    2.378034] mmc0: sdhci: Power:     0x0000000f | Blk gap:  0x00000000
[    2.378041] mmc0: sdhci: Wake-up:   0x00000000 | Clock:    0x00004003
[    2.378049] mmc0: sdhci: Timeout:   0x00000000 | Int stat: 0x00000000
[    2.378056] mmc0: sdhci: Int enab:  0x00ff0083 | Sig enab: 0x00ff0083
[    2.378064] mmc0: sdhci: ACmd stat: 0x00000000 | Slot int: 0x00000000
[    2.378071] mmc0: sdhci: Caps:      0x21e608b2 | Caps_1:   0x00002077
[    2.378079] mmc0: sdhci: Cmd:       0x00000000 | Max curr: 0x00000064
[    2.378086] mmc0: sdhci: Resp[0]:   0x00000000 | Resp[1]:  0x00000000
[    2.378094] mmc0: sdhci: Resp[2]:   0x00000000 | Resp[3]:  0x00000000
[    2.378098] mmc0: sdhci: Host ctl2: 0x00000000
[    2.378098] mmc0: sdhci: ============================================
[   14.414105] ACPI Warning: SystemIO range 0x0000000000000428-0x000000000000042F conflicts with OpRegion 0x0000000000000400-0x000000000000047F (\PMIO) (20200528/utaddress-204)
[   14.414116] ACPI Warning: SystemIO range 0x0000000000000540-0x000000000000054F conflicts with OpRegion 0x0000000000000500-0x0000000000000563 (\GPIO) (20200528/utaddress-204)
[   14.414121] ACPI Warning: SystemIO range 0x0000000000000530-0x000000000000053F conflicts with OpRegion 0x0000000000000500-0x0000000000000563 (\GPIO) (20200528/utaddress-204)
[   14.414127] ACPI Warning: SystemIO range 0x0000000000000500-0x000000000000052F conflicts with OpRegion 0x0000000000000500-0x0000000000000563 (\GPIO) (20200528/utaddress-204)
[   14.414131] lpc_ich: Resource conflict(s) found affecting gpio_ich
[   14.550442] i801_smbus 0000:00:1f.3: Accelerometer lis3lv02d is present on SMBus but its address is unknown, skipping registration
[   14.734521] wmi_bus wmi_bus-PNP0C14:00: WQBC data block query control method not found
[   14.981246] dell-smbios PNP0C14:00-A80593CE-A997-11DA-B012-B622A1EF5492: WMI SMBIOS userspace interface not supported(0), try upgrading to a newer BIOS
[   15.203863] iwlwifi 0000:02:00.0: can't disable ASPM; OS doesn't have ASPM control
[   15.207444] iwlwifi 0000:02:00.0: Direct firmware load for iwlwifi-6000-6.ucode failed with error -2
[   15.207478] iwlwifi 0000:02:00.0: Direct firmware load for iwlwifi-6000-5.ucode failed with error -2
[   15.310561] iwlwifi 0000:02:00.0: Direct firmware load for iwl-debug-yoyo.bin failed with error -2
[   16.501208] kauditd_printk_skb: 35 callbacks suppressed
[   20.575451] uvcvideo 1-1.5:1.0: Entity type for entity Extension 4 was not initialized!
[   20.575454] uvcvideo 1-1.5:1.0: Entity type for entity Extension 3 was not initialized!
[   20.575455] uvcvideo 1-1.5:1.0: Entity type for entity Processing 2 was not initialized!
[   20.575457] uvcvideo 1-1.5:1.0: Entity type for entity Camera 1 was not initialized!
[   23.969418] kauditd_printk_skb: 3 callbacks suppressed
[   29.223504] kauditd_printk_skb: 4 callbacks suppressed
[   36.007436] kauditd_printk_skb: 4 callbacks suppressed
[   51.492458] kauditd_printk_skb: 6 callbacks suppressed
[  844.872084] kauditd_printk_skb: 6 callbacks suppressed

Fabby · 5 September 2020 20:20

As per the documentation link that is included in the warning:

Attack scenarios
Attacks against the MDS vulnerabilities can be mounted from malicious non priviledged user space applications running on hosts or guest. Malicious guest OSes can obviously mount attacks as well.
Contrary to other speculation based vulnerabilities the MDS vulnerability does not allow the attacker to control the memory target address. As a consequence the attacks are purely sampling based, but as demonstrated with the TLBleed attack samples can be postprocessed successfully.

So if this is a server with multiple customers using the same hardware and you serve the Russian, Italian and Japanese Mafia, you should be very worried!

If this is a personal machine to which only you have access and only you run applications from the standard repositories, this bug does not affect you.

Aveon · 6 September 2020 04:08

Yeah just for personal use

Thank you for the letting me know

system · 9 September 2020 07:48

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