🛡️ CVE-2022-20008 on Ubuntu — linux
Description
In mmc_blk_read_single of block.c, there is a possible way to read kernel heap memory due to uninitialized data. This could lead to local information disclosure if reading from an SD card that triggers errors, with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-216481035References: Upstream kernel
Distribution advisory
This page covers CVE-2022-20008 as tracked by Ubuntu, for the package linux. The fix is available in version 5.4.0-110.124; earlier versions remain affected.
How this vulnerability can be exploited
This issue can be reached with physical access to the device, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity none, availability none.
CVSS metrics in full
The score comes from this vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- Attack vector: Physical — the attacker has to touch the device.
- Attack complexity: Low — the attack works reliably, with no preparation.
- Privileges required: None — an unauthenticated stranger can try it.
- User interaction: None — nobody has to be tricked into anything.
- Scope: Unchanged — the damage stays inside the vulnerable component.
- Confidentiality impact: High — total loss, or loss the attacker controls.
- Integrity impact: None.
- Availability impact: None.
Affected software
UBUNTU-CVE-2022-20008 is recorded against 64 packages.
- linux (fixed in 5.4.0-110.124)
- linux-aws (fixed in 5.4.0-1073.78)
- linux-aws-5.0
- linux-aws-5.11
- linux-aws-5.13 (fixed in 5.13.0-1023.25~20.04.1)
- linux-aws-5.3
- linux-aws-5.4 (fixed in 5.4.0-1075.80~18.04.1)
- linux-aws-5.8
- linux-aws-fips
- linux-azure (fixed in 5.4.0-1078.81)
- linux-azure-5.11
- linux-azure-5.13 (fixed in 5.13.0-1023.27~20.04.1)
- linux-azure-5.3
- linux-azure-5.4 (fixed in 5.4.0-1078.81~18.04.1)
- linux-azure-5.8
- linux-azure-edge
- linux-azure-fips
- linux-bluefield
- linux-fips
- linux-gcp (fixed in 5.4.0-1073.78)
- linux-gcp-5.11
- linux-gcp-5.13 (fixed in 5.13.0-1025.30~20.04.1)
- linux-gcp-5.3
- linux-gcp-5.4 (fixed in 5.4.0-1073.78~18.04.1)
Show the remaining 40 packages
- linux-gcp-5.8
- linux-gcp-fips
- linux-gke (fixed in 5.4.0-1071.76)
- linux-gke-4.15
- linux-gke-5.4 (fixed in 5.4.0-1071.76~18.04.3)
- linux-gkeop (fixed in 5.4.0-1040.41)
- linux-gkeop-5.4 (fixed in 5.4.0-1040.41~18.04.1)
- linux-hwe
- linux-hwe-5.11
- linux-hwe-5.13 (fixed in 5.13.0-41.46~20.04.1)
- linux-hwe-5.4 (fixed in 5.4.0-110.124~18.04.1)
- linux-hwe-5.8
- linux-hwe-edge
- linux-ibm (fixed in 5.4.0-1021.23)
- linux-ibm-5.4 (fixed in 5.4.0-1021.23~18.04.1)
- linux-intel-5.13
- linux-intel-iot-realtime
- linux-intel-iotg-5.15 (fixed in 5.15.0-1008.11~20.04.1)
- linux-iot (fixed in 5.4.0-1004.6)
- linux-kvm (fixed in 5.4.0-1063.66)
- linux-oem
- linux-oem-5.10
- linux-oem-5.13
- linux-oem-5.14 (fixed in 5.14.0-1027.30)
- linux-oem-5.6
- linux-oracle (fixed in 5.4.0-1071.77)
- linux-oracle-5.0
- linux-oracle-5.11
- linux-oracle-5.13 (fixed in 5.13.0-1028.33~20.04.1)
- linux-oracle-5.3
- linux-oracle-5.4 (fixed in 5.4.0-1071.77~18.04.1)
- linux-oracle-5.8
- linux-raspi (fixed in 5.4.0-1060.68)
- linux-raspi-5.4 (fixed in 5.4.0-1060.68~18.04.1)
- linux-raspi-realtime
- linux-raspi2
- linux-realtime
- linux-riscv
- linux-riscv-5.11
- linux-riscv-5.8
Timeline and source
Published on 10 May 2022 and last revised on 17 August 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.
References
ubuntu.com (Report)
source.android.com (Report)
git.kernel.org (Report)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
www.cve.org (Report)
Other advisories for this package
linux has other advisories on record. If you are patching this one, these are worth checking on the same host:
- DEBIAN-CVE-2022-4994 (published 30 Jul 2026)
- CVE-2026-21996 (3.3 Low, published 1 May 2026)
- CVE-2026-35233 (4.4 Medium, published 1 May 2026)
- CVE-2026-21991 (5.5 Medium, published 16 Mar 2026)
- CGA-mcwh-q4vm-9f29 (published 29 Jan 2026)
- CGA-w6xv-3fg4-grm5 (published 29 Jan 2026)
- CGA-6749-c84f-cv6j (published 7 Jan 2026)
- CGA-gqvj-m2xp-q99r (published 7 Jan 2026)
CVE-2022-20008 on other distributions
Each distribution ships its own build and its own fixed version. Pick the one you run:
Details
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Affected Packages
| Software | From version | Fixed in |
|---|---|---|
| linux | — | 5.4.0-110.124 |
| linux-aws | — | 5.4.0-1073.78 |
| linux-aws-5.0 | — | — |
| linux-aws-5.11 | — | — |
| linux-aws-5.13 | — | 5.13.0-1023.25~20.04.1 |
| linux-aws-5.3 | — | — |
| linux-aws-5.4 | — | 5.4.0-1075.80~18.04.1 |
| linux-aws-5.8 | — | — |
| linux-aws-fips | — | — |
| linux-azure | — | 5.4.0-1078.81 |
| linux-azure-5.11 | — | — |
| linux-azure-5.13 | — | 5.13.0-1023.27~20.04.1 |
| linux-azure-5.3 | — | — |
| linux-azure-5.4 | — | 5.4.0-1078.81~18.04.1 |
| linux-azure-5.8 | — | — |
| linux-azure-edge | — | — |
| linux-azure-fips | — | — |
| linux-bluefield | — | — |
| linux-fips | — | — |
| linux-gcp | — | 5.4.0-1073.78 |
| linux-gcp-5.11 | — | — |
| linux-gcp-5.13 | — | 5.13.0-1025.30~20.04.1 |
| linux-gcp-5.3 | — | — |
| linux-gcp-5.4 | — | 5.4.0-1073.78~18.04.1 |
| linux-gcp-5.8 | — | — |
| linux-gcp-fips | — | — |
| linux-gke | — | 5.4.0-1071.76 |
| linux-gke-4.15 | — | — |
| linux-gke-5.4 | — | 5.4.0-1071.76~18.04.3 |
| linux-gkeop | — | 5.4.0-1040.41 |
| linux-gkeop-5.4 | — | 5.4.0-1040.41~18.04.1 |
| linux-hwe | — | — |
| linux-hwe-5.11 | — | — |
| linux-hwe-5.13 | — | 5.13.0-41.46~20.04.1 |
| linux-hwe-5.4 | — | 5.4.0-110.124~18.04.1 |
| linux-hwe-5.8 | — | — |
| linux-hwe-edge | — | — |
| linux-ibm | — | 5.4.0-1021.23 |
| linux-ibm-5.4 | — | 5.4.0-1021.23~18.04.1 |
| linux-intel-5.13 | — | — |
| linux-intel-iot-realtime | — | — |
| linux-intel-iotg-5.15 | — | 5.15.0-1008.11~20.04.1 |
| linux-iot | — | 5.4.0-1004.6 |
| linux-kvm | — | 5.4.0-1063.66 |
| linux-oem | — | — |
| linux-oem-5.10 | — | — |
| linux-oem-5.13 | — | — |
| linux-oem-5.14 | — | 5.14.0-1027.30 |
| linux-oem-5.6 | — | — |
| linux-oracle | — | 5.4.0-1071.77 |
| linux-oracle-5.0 | — | — |
| linux-oracle-5.11 | — | — |
| linux-oracle-5.13 | — | 5.13.0-1028.33~20.04.1 |
| linux-oracle-5.3 | — | — |
| linux-oracle-5.4 | — | 5.4.0-1071.77~18.04.1 |
| linux-oracle-5.8 | — | — |
| linux-raspi | — | 5.4.0-1060.68 |
| linux-raspi-5.4 | — | 5.4.0-1060.68~18.04.1 |
| linux-raspi-realtime | — | — |
| linux-raspi2 | — | — |
| linux-realtime | — | — |
| linux-riscv | — | — |
| linux-riscv-5.11 | — | — |
| linux-riscv-5.8 | — | — |
References
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