CVE-2021-47153

In the Linux kernel, the following vulnerability has been resolved:

i2c: i801: Don't generate an interrupt on bus reset

Now that the i2c-i801 driver supports interrupts, setting the KILL bit
in a attempt to recover from a timed out transaction triggers an
interrupt. Unfortunately, the interrupt handler (i801_isr) is not
prepared for this situation and will try to process the interrupt as
if it was signaling the end of a successful transaction. In the case
of a block transaction, this can result in an out-of-range memory
access.

This condition was reproduced several times by syzbot:
https://syzkaller.appspot.com/bug?extid=ed71512d469895b5b34e
https://syzkaller.appspot.com/bug?extid=8c8dedc0ba9e03f6c79e
https://syzkaller.appspot.com/bug?extid=c8ff0b6d6c73d81b610e
https://syzkaller.appspot.com/bug?extid=33f6c360821c399d69eb
https://syzkaller.appspot.com/bug?extid=be15dc0b1933f04b043a
https://syzkaller.appspot.com/bug?extid=b4d3fd1dfd53e90afd79

So disable interrupts while trying to reset the bus. Interrupts will
be enabled again for the following transaction.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
6 MEDIUM
LOCAL
LOW
HIGH
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:H
LinuxCNA
---
---
CISA-ADPADP
6 MEDIUM
LOCAL
LOW
HIGH
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:H
CVEADP
---
---
Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Debian logo
Debian Releases
Debian Product
Codename
linux
bullseye
5.10.223-1
fixed
bullseye (security)
5.10.226-1
fixed
bookworm
6.1.106-3
fixed
bookworm (security)
6.1.112-1
fixed
sid
6.11.5-1
fixed
trixie
6.11.5-1
fixed
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Ubuntu Releases
Ubuntu Product
Codename
linux
noble
not-affected
mantic
not-affected
jammy
not-affected
focal
Fixed 5.4.0-80.90
released
bionic
pending
xenial
ignored
trusty
ignored
linux-allwinner-5.19
noble
dne
mantic
dne
jammy
ignored
focal
dne
linux-aws
noble
not-affected
mantic
not-affected
jammy
not-affected
focal
Fixed 5.4.0-1054.57
released
bionic
pending
xenial
ignored
trusty
ignored
linux-aws-5.0
noble
dne
mantic
dne
jammy
dne
focal
dne
bionic
ignored
linux-aws-5.11
noble
dne
mantic
dne
jammy
dne
focal
ignored
linux-aws-5.13
noble
dne
mantic
dne
jammy
dne
focal
ignored
linux-aws-5.15
noble
dne
mantic
dne
jammy
dne
focal
not-affected
linux-aws-5.19
noble
dne
mantic
dne
jammy
ignored
focal
dne
linux-aws-5.3
noble
dne
mantic
dne
jammy
dne
focal
dne
bionic
ignored
linux-aws-5.4
noble
dne
mantic
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jammy
dne
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dne
bionic
pending
linux-aws-5.8
noble
dne
mantic
dne
jammy
dne
focal
ignored
linux-aws-6.2
noble
dne
mantic
dne
jammy
ignored
focal
dne
linux-aws-6.5
noble
dne
mantic
dne
jammy
not-affected
focal
dne
linux-aws-fips
noble
dne
mantic
dne
jammy
dne
focal
dne
bionic
dne
xenial
dne
trusty
dne
linux-aws-hwe
noble
dne
mantic
dne
jammy
dne
focal
dne
xenial
Fixed 4.15.0-1109.116~16.04.1
released
linux-azure
noble
not-affected
mantic
not-affected
jammy
not-affected
focal
Fixed 5.4.0-1055.57
released
bionic
ignored
xenial
Fixed 4.15.0-1121.134~16.04.1
released
trusty
Fixed 4.15.0-1121.134~14.04.1
released
linux-azure-4.15
noble
dne
mantic
dne
jammy
dne
focal
dne
bionic
pending
linux-azure-5.11
noble
dne
mantic
dne
jammy
dne
focal
ignored
linux-azure-5.13
noble
dne
mantic
dne
jammy
dne
focal
ignored
linux-azure-5.15
noble
dne
mantic
dne
jammy
dne
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not-affected
linux-azure-5.19
noble
dne
mantic
dne
jammy
ignored
focal
dne
linux-azure-5.3
noble
dne
mantic
dne
jammy
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focal
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bionic
ignored
linux-azure-5.4
noble
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bionic
pending
linux-azure-5.8
noble
dne
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jammy
dne
focal
ignored
linux-azure-6.2
noble
dne
mantic
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jammy
ignored
focal
dne
linux-azure-6.5
noble
dne
mantic
dne
jammy
not-affected
focal
dne
linux-azure-edge
noble
dne
mantic
dne
jammy
dne
focal
dne
bionic
ignored
linux-azure-fde
noble
dne
mantic
dne
jammy
not-affected
focal
ignored
linux-azure-fde-5.15
noble
dne
mantic
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jammy
dne
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not-affected
linux-azure-fde-5.19
noble
dne
mantic
dne
jammy
ignored
focal
dne
linux-azure-fde-6.2
noble
dne
mantic
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jammy
ignored
focal
dne
linux-azure-fips
noble
dne
mantic
dne
jammy
dne
focal
dne
bionic
dne
xenial
dne
trusty
dne
linux-bluefield
noble
dne
mantic
dne
jammy
dne
focal
Fixed 5.4.0-1016.19
released
linux-fips
noble
dne
mantic
dne
jammy
dne
focal
dne
linux-gcp
noble
not-affected
mantic
not-affected
jammy
not-affected
focal
Fixed 5.4.0-1049.53
released
bionic
ignored
xenial
Fixed 4.15.0-1106.120~16.04.1
released
linux-gcp-4.15
noble
dne
mantic
dne
jammy
dne
focal
dne
bionic
pending
linux-gcp-5.11
noble
dne
mantic
dne
jammy
dne
focal
ignored
linux-gcp-5.13
noble
dne
mantic
dne
jammy
dne
focal
ignored
linux-gcp-5.15
noble
dne
mantic
dne
jammy
dne
focal
not-affected
linux-gcp-5.19
noble
dne
mantic
dne
jammy
ignored
focal
dne
linux-gcp-5.3
noble
dne
mantic
dne
jammy
dne
focal
dne
bionic
ignored
linux-gcp-5.4
noble
dne
mantic
dne
jammy
dne
focal
dne
bionic
pending
linux-gcp-5.8
noble
dne
mantic
dne
jammy
dne
focal
ignored
linux-gcp-6.2
noble
dne
mantic
dne
jammy
ignored
focal
dne
linux-gcp-6.5
noble
dne
mantic
dne
jammy
not-affected
focal
dne
linux-gcp-fips
noble
dne
mantic
dne
jammy
dne
focal
dne
bionic
dne
xenial
dne
trusty
dne
linux-gke
noble
not-affected
mantic
dne
jammy
not-affected
focal
ignored
linux-gke-4.15
noble
dne
mantic
dne
jammy
dne
focal
dne
bionic
ignored
linux-gke-5.15
noble
dne
mantic
dne
jammy
dne
focal
ignored
linux-gke-5.4
noble
dne
mantic
dne
jammy
dne
focal
dne
bionic
ignored
linux-gkeop
noble
dne
mantic
dne
jammy
not-affected
focal
Fixed 5.4.0-1021.22
released
linux-gkeop-5.15
noble
dne
mantic
dne
jammy
dne
focal
not-affected
linux-gkeop-5.4
noble
dne
mantic
dne
jammy
dne
focal
dne
bionic
ignored
linux-hwe
noble
dne
mantic
dne
jammy
dne
focal
dne
bionic
ignored
xenial
Fixed 4.15.0-151.157~16.04.1
released
linux-hwe-5.11
noble
dne
mantic
dne
jammy
dne
focal
ignored
linux-hwe-5.13
noble
dne
mantic
dne
jammy
dne
focal
ignored
linux-hwe-5.15
noble
dne
mantic
dne
jammy
dne
focal
not-affected
linux-hwe-5.19
noble
dne
mantic
dne
jammy
ignored
focal
dne
linux-hwe-5.4
noble
dne
mantic
dne
jammy
dne
focal
dne
bionic
pending
linux-hwe-5.8
noble
dne
mantic
dne
jammy
dne
focal
ignored
linux-hwe-6.2
noble
dne
mantic
dne
jammy
ignored
focal
dne
linux-hwe-6.5
noble
dne
mantic
dne
jammy
not-affected
focal
dne
linux-hwe-6.8
noble
dne
jammy
not-affected
focal
dne
bionic
dne
xenial
dne
trusty
dne
linux-hwe-edge
noble
dne
mantic
dne
jammy
dne
focal
dne
bionic
ignored
xenial
ignored
linux-ibm
noble
not-affected
mantic
ignored
jammy
not-affected
focal
not-affected
linux-ibm-5.15
noble
dne
mantic
dne
jammy
dne
focal
not-affected
linux-ibm-5.4
noble
dne
mantic
dne
jammy
dne
focal
dne
bionic
not-affected
linux-intel
noble
not-affected
mantic
dne
jammy
dne
focal
dne
bionic
dne
xenial
dne
trusty
dne
linux-intel-5.13
noble
dne
mantic
dne
jammy
dne
focal
ignored
linux-intel-iot-realtime
noble
dne
jammy
dne
focal
dne
bionic
dne
xenial
dne
trusty
dne
linux-intel-iotg
noble
dne
mantic
dne
jammy
not-affected
focal
dne
linux-intel-iotg-5.15
noble
dne
mantic
dne
jammy
dne
focal
not-affected
linux-iot
noble
dne
mantic
dne
jammy
dne
focal
not-affected
linux-kvm
noble
dne
mantic
dne
jammy
not-affected
focal
Fixed 5.4.0-1044.46
released
bionic
pending
xenial
ignored
linux-laptop
noble
dne
mantic
not-affected
jammy
dne
focal
dne
linux-lowlatency
noble
not-affected
mantic
not-affected
jammy
not-affected
focal
dne
linux-lowlatency-hwe-5.15
noble
dne
mantic
dne
jammy
dne
focal
not-affected
linux-lowlatency-hwe-5.19
noble
dne
mantic
dne
jammy
ignored
focal
dne
linux-lowlatency-hwe-6.2
noble
dne
mantic
dne
jammy
ignored
focal
dne
linux-lowlatency-hwe-6.5
noble
dne
mantic
dne
jammy
not-affected
focal
dne
linux-lowlatency-hwe-6.8
noble
dne
jammy
not-affected
focal
dne
bionic
dne
xenial
dne
trusty
dne
linux-lts-xenial
noble
dne
mantic
dne
jammy
dne
focal
dne
trusty
ignored
linux-nvidia
noble
not-affected
mantic
dne
jammy
not-affected
focal
dne
linux-nvidia-6.2
noble
dne
mantic
dne
jammy
ignored
focal
dne
linux-nvidia-6.5
noble
dne
mantic
dne
jammy
not-affected
focal
dne
bionic
dne
xenial
dne
trusty
dne
linux-nvidia-6.8
noble
dne
jammy
not-affected
focal
dne
bionic
dne
xenial
dne
trusty
dne
linux-nvidia-lowlatency
noble
not-affected
jammy
dne
focal
dne
bionic
dne
xenial
dne
trusty
dne
linux-oem
noble
dne
mantic
dne
jammy
dne
focal
dne
bionic
ignored
linux-oem-5.10
noble
dne
mantic
dne
jammy
dne
focal
ignored
linux-oem-5.13
noble
dne
mantic
dne
jammy
dne
focal
ignored
linux-oem-5.14
noble
dne
mantic
dne
jammy
dne
focal
ignored
linux-oem-5.17
noble
dne
mantic
dne
jammy
ignored
focal
dne
linux-oem-5.6
noble
dne
mantic
dne
jammy
dne
focal
ignored
linux-oem-6.0
noble
dne
mantic
dne
jammy
ignored
focal
dne
linux-oem-6.1
noble
dne
mantic
dne
jammy
ignored
focal
dne
linux-oem-6.5
noble
dne
mantic
dne
jammy
not-affected
focal
dne
linux-oem-6.8
noble
not-affected
mantic
dne
jammy
dne
focal
dne
bionic
dne
xenial
dne
trusty
dne
linux-oracle
noble
not-affected
mantic
not-affected
jammy
not-affected
focal
Fixed 5.4.0-1052.56
released
bionic
pending
xenial
Fixed 4.15.0-1078.86~16.04.1
released
linux-oracle-5.0
noble
dne
mantic
dne
jammy
dne
focal
dne
bionic
ignored
linux-oracle-5.11
noble
dne
mantic
dne
jammy
dne
focal
ignored
linux-oracle-5.13
noble
dne
mantic
dne
jammy
dne
focal
ignored
linux-oracle-5.15
noble
dne
mantic
dne
jammy
dne
focal
not-affected
linux-oracle-5.3
noble
dne
mantic
dne
jammy
dne
focal
dne
bionic
ignored
linux-oracle-5.4
noble
dne
mantic
dne
jammy
dne
focal
dne
bionic
pending
linux-oracle-5.8
noble
dne
mantic
dne
jammy
dne
focal
ignored
linux-oracle-6.5
noble
dne
mantic
dne
jammy
not-affected
focal
dne
linux-raspi
noble
not-affected
mantic
not-affected
jammy
not-affected
focal
Fixed 5.4.0-1041.45
released
linux-raspi-5.4
noble
dne
mantic
dne
jammy
dne
focal
dne
bionic
pending
linux-raspi-realtime
noble
dne
jammy
dne
focal
dne
bionic
dne
xenial
dne
trusty
dne
linux-raspi2
noble
dne
mantic
dne
jammy
dne
focal
ignored
linux-realtime
noble
dne
jammy
ignored
focal
dne
bionic
dne
xenial
dne
trusty
dne
linux-riscv
noble
not-affected
mantic
not-affected
jammy
ignored
focal
ignored
linux-riscv-5.11
noble
dne
mantic
dne
jammy
dne
focal
ignored
linux-riscv-5.15
noble
dne
mantic
dne
jammy
dne
focal
not-affected
linux-riscv-5.19
noble
dne
mantic
dne
jammy
ignored
focal
dne
linux-riscv-5.8
noble
dne
mantic
dne
jammy
dne
focal
ignored
linux-riscv-6.5
noble
dne
mantic
dne
jammy
not-affected
focal
dne
linux-riscv-6.8
noble
dne
jammy
not-affected
focal
dne
bionic
dne
xenial
dne
trusty
dne
linux-starfive
noble
dne
mantic
not-affected
jammy
dne
focal
dne
linux-starfive-5.19
noble
dne
mantic
dne
jammy
ignored
focal
dne
linux-starfive-6.2
noble
dne
mantic
dne
jammy
ignored
focal
dne
linux-starfive-6.5
noble
dne
mantic
dne
jammy
not-affected
focal
dne
linux-xilinx-zynqmp
noble
dne
mantic
dne
jammy
not-affected
focal
not-affected