Description
An information disclosure vulnerability exists in the ARM SIGPAGE functionality of Linux Kernel v5.4.66 and v5.4.54. The latest version (5.11-rc4) seems to still be vulnerable. A userland application can read the contents of the sigpage, which can leak kernel memory contents. An attacker can read a process’s memory at a specific offset to trigger this vulnerability. This was fixed in kernel releases: 4.14.222 4.19.177 5.4.99 5.10.17 5.11
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | Linux Kernel | Linux Kernel v5.4.54, Linux Kernel v5.4.66 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | linux | 5.10.19-1 | — |
| Debian 13 | linux | 5.10.19-1 | — |
| Debian 12 | linux | 5.10.19-1 | — |
| Debian 9 | linux | 4.9.272-2 | DLA-2713-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | linux-raspi-realtime | No fix yet | — |
| Ubuntu 22.04 LTS | linux-realtime +1 | No fix yet | — |
| Ubuntu 20.04 LTS | linux | 5.4.0-71.79 | — |
| Ubuntu 20.04 LTS | linux-aws | 5.4.0-1043.45 | — |
| Ubuntu 20.04 LTS | linux-azure | 5.4.0-1044.46 | — |
| Ubuntu 20.04 LTS | linux-gcp | 5.4.0-1041.44 | — |
| Ubuntu 20.04 LTS | linux-gke | 5.4.0-1041.43 | — |
| Ubuntu 20.04 LTS | linux-gkeop | 5.4.0-1013.14 | — |
| Ubuntu 20.04 LTS | linux-hwe-5.8 | 5.8.0-53.60~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-kvm | 5.4.0-1037.38 | — |
| Ubuntu 20.04 LTS | linux-oem-5.10 | 5.10.0-1017.18 | — |
| Ubuntu 20.04 LTS | linux-oracle | 5.4.0-1042.45 | — |
| Ubuntu 20.04 LTS | linux-raspi | 5.4.0-1033.36 | — |
| Ubuntu 20.04 LTS | linux-riscv +2 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-riscv-5.8 | 5.8.0-25.27~20.04.1 | — |
| Ubuntu 18.04 LTS | linux | 4.15.0-143.147 | — |
| Ubuntu 18.04 LTS | linux-aws | 4.15.0-1102.109 | — |
| Ubuntu 18.04 LTS | linux-aws-5.4 | 5.4.0-1043.45~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-azure-4.15 | 4.15.0-1114.127 | — |
| Ubuntu 18.04 LTS | linux-azure-5.4 | 5.4.0-1044.46~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-dell300x | 4.15.0-1018.22 | — |
| Ubuntu 18.04 LTS | linux-gcp +13 | No fix yet | — |
| Ubuntu 18.04 LTS | linux-gcp-4.15 | 4.15.0-1099.112 | — |
| Ubuntu 18.04 LTS | linux-gcp-5.4 | 5.4.0-1041.44~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-gke-5.4 | 5.4.0-1040.42~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-gkeop-5.4 | 5.4.0-1013.14~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-hwe-5.4 | 5.4.0-71.79~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-kvm | 4.15.0-1091.93 | — |
| Ubuntu 18.04 LTS | linux-oracle | 4.15.0-1071.79 | — |
| Ubuntu 18.04 LTS | linux-oracle-5.4 | 5.4.0-1042.45~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-raspi-5.4 | 5.4.0-1033.36~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-raspi2 | 4.15.0-1085.90 | — |
| Ubuntu 18.04 LTS | linux-snapdragon | 4.15.0-1102.111 | — |
| Ubuntu 16.04 LTS | linux-hwe-edge | No fix yet | — |
Show 8 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro FIPS 20.04 LTS | linux-aws-fips +2 | No fix yet | — |
| Ubuntu Pro FIPS 18.04 LTS | linux-fips +3 | No fix yet | — |
| Ubuntu Pro FIPS 16.04 LTS | linux-fips | No fix yet | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-aws-fips | 5.4.0-1069.73+fips2 | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-azure-fips | 5.4.0-1073.76+fips1 | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-gcp-fips | 5.4.0-1067.71~20.04.1 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-aws-fips | 4.15.0-2044.46 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-azure-fips | 4.15.0-2026.29 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-fips | 4.15.0-1059.67 | — |
| Ubuntu Pro FIPS-updates 16.04 LTS | linux-fips | No fix yet | — |
| Ubuntu Pro 16.04 LTS | linux +2 | No fix yet | — |
| Ubuntu Pro 16.04 LTS | linux-aws-hwe | 4.15.0-1102.109~16.04.1 | — |
| Ubuntu Pro 16.04 LTS | linux-azure | 4.15.0-1114.127~16.04.1 | — |
| Ubuntu Pro 16.04 LTS | linux-gcp | 4.15.0-1099.112~16.04.1 | — |
| Ubuntu Pro 16.04 LTS | linux-hwe | 4.15.0-143.147~16.04.3 | — |
| Ubuntu Pro 16.04 LTS | linux-oracle | 4.15.0-1071.79~16.04.1 | — |
| Ubuntu Pro 14.04 LTS | linux +2 | No fix yet | — |
| Ubuntu Pro 14.04 LTS | linux-azure | 4.15.0-1114.127~14.04.1 | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8 | perf +26 | 4.18.0-372.9.1.el8 | RHSA-2022:1988 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 8 | perf +19 | 4.18.0-372.9.1.el8 | ALSA-2022:1988 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 8 | kernel | 4.18.0-372.9.1.el8 | RLSA-2022:1988 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP3 | kernel-64kb +7 | 5.3.18-59.19.1 | SUSE-SU-2021:2687-1 |
| SLES 15 SP3 | kernel-azure +2 | 5.3.18-38.17.1 | SUSE-SU-2021:2645-1 |
| SLES 15 SP3 | kernel-default-base | 5.3.18-59.19.1.18.10.1 | SUSE-SU-2021:2687-1 |
| SLES 15 SP2 | kernel-azure +2 | 5.3.18-18.61.1 | SUSE-SU-2021:2646-1 |
| SLES 15 SP2 | kernel-default-base | 5.3.18-24.78.1.9.36.1 | SUSE-SU-2021:2756-1 |
| SLES 15 SP2 | kernel-docs +5 | 5.3.18-24.78.1 | SUSE-SU-2021:2756-1 |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLE Micro 5.0 | kernel-default | 5.3.18-24.78.1 | SUSE-SU-2021:2756-1 |
| SLE Micro 5.0 | kernel-default-base | 5.3.18-24.78.1.9.36.1 | SUSE-SU-2021:2756-1 |
| SLE Micro 5.0 | kernel-rt | 5.3.18-48.1 | SUSE-SU-2021:2678-1 |
| SLE Live Patching 15 SP3 | kernel-default | 5.3.18-59.19.1 | SUSE-SU-2021:2687-1 |
| SLE Live Patching 15 SP3 | kernel-livepatch-SLE15-SP3_Update_5 | 1-7.3.1 | SUSE-SU-2021:2687-1 |
| SLE Live Patching 15 SP2 | kernel-default | 5.3.18-24.78.1 | SUSE-SU-2021:2756-1 |
| SLE Live Patching 15 SP2 | kernel-livepatch-SLE15-SP2_Update_18 | 1-5.3.1 | SUSE-SU-2021:2756-1 |
| SUSE Real Time Module 15 SP2 | kernel-rt +3 | 5.3.18-48.1 | SUSE-SU-2021:2678-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.3 | dtb-aarch64 +11 | 5.3.18-59.19.1 | openSUSE-SU-2021:2687-1 |
| openSUSE Leap 15.3 | kernel-azure +2 | 5.3.18-38.17.1 | openSUSE-SU-2021:2645-1 |
| openSUSE Leap 15.3 | kernel-default-base | 5.3.18-59.19.1.18.10.1 | openSUSE-SU-2021:2687-1 |
| openSUSE Leap 15.2 | kernel-default-base | 5.3.18-lp152.87.1.lp152.8.40.1 | openSUSE-SU-2021:1142-1 |
| openSUSE Leap 15.2 | kernel-docs +8 | 5.3.18-lp152.87.1 | openSUSE-SU-2021:1142-1 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 8 | perf +19 | 4.18.0-372.9.1.el8 | ELSA-2022-1988 |
Advisories 15
- ALSA-2022:1988 Important: kernel security, bug fix, and enhancement update AlmaLinux Security Advisories · Oct 29, 2026
- RHSA-2022:1988 Red Hat Security Advisory: kernel security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- DLA-2713-1 linux - security update Debian Security (DSA / DLA) · Mar 9, 2026
- RLSA-2022:1988 Important: kernel security, bug fix, and enhancement update Rocky Linux Security Advisories · Feb 4, 2026
- openSUSE-SU-2021:2687-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:2646-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2021:1142-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:2645-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2021:2645-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:2678-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:2756-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:2687-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · May 2, 2025
- WID-SEC-2022-0112 Google Android: Mehrere Schwachstellen ermöglichen Privilegieneskalation BSI CERT-Bund (WID) · Jul 3, 2024
- WID-SEC-2022-0515 IBM Spectrum Protect: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jun 8, 2023
- ELSA-2022-1988 Important: kernel security, bug fix, and enhancement update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · May 17, 2022