Description
Systems with microprocessors utilizing speculative execution and branch prediction may allow unauthorized disclosure of information to an attacker with local user access via a speculative buffer overflow and side-channel analysis.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Intel | Most Modern Operating Systems | All | — |
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 | 4.15.11-1 | — |
| Debian 13 | linux | 4.15.11-1 | — |
| Debian 12 | linux | 4.15.11-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | linux-raspi-realtime | No fix yet | — |
| Ubuntu 22.04 LTS | linux-riscv +2 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-gke +3 | No fix yet | — |
| Ubuntu 18.04 LTS | intel-microcode | 3.20180312.0~ubuntu18.04.1 | — |
| Ubuntu 16.04 LTS | intel-microcode | 3.20180312.0~ubuntu16.04.1 | — |
| Ubuntu 16.04 LTS | linux | 4.4.0-112.135 | — |
| Ubuntu 16.04 LTS | linux-aws | 4.4.0-1049.58 | — |
| Ubuntu 16.04 LTS | linux-azure | 4.15.0-1013.13~16.04.2 | — |
| Ubuntu 16.04 LTS | linux-euclid | 4.4.0-9023.24 | — |
| Ubuntu 16.04 LTS | linux-gcp | 4.15.0-1014.14~16.04.1 | — |
| Ubuntu 16.04 LTS | linux-hwe | 4.15.0-24.26~16.04.1 | — |
| Ubuntu 16.04 LTS | linux-kvm | 4.4.0-1017.22 | — |
| Ubuntu 16.04 LTS | linux-raspi2 | 4.4.0-1085.93 | — |
| Ubuntu 16.04 LTS | linux-snapdragon | 4.4.0-1087.92 | — |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | intel-microcode | 3.20180312.0~ubuntu14.04.1 | — |
| Ubuntu 14.04 LTS | linux | 3.13.0-157.207 | — |
| Ubuntu 14.04 LTS | linux-aws | 4.4.0-1011.11 | — |
| Ubuntu 14.04 LTS | linux-lts-xenial | 4.4.0-111.134~14.04.1 | — |
| Ubuntu Pro FIPS-updates 16.04 LTS | linux-fips | 4.4.0-1005.5 | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | kernel-alt | 4.14.0-115.17.1.el7a | RHSA-2020:0174 |
| RHEL 7 | kernel-rt +10 | 3.10.0-862.11.6.rt56.819.el7 | RHSA-2018:2395 |
| RHEL 7 | perf +18 | 3.10.0-862.11.6.el7 | RHSA-2020:0174, RHSA-2018:2384 |
| RHEL 6 | perf +16 | 2.6.32-754.3.5.el6 | RHSA-2018:2390 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7.4 EUS | perf +18 | 3.10.0-693.55.1.el7 | RHSA-2019:1946 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | perf +7 | 4.14.47-63.37.amzn2 | ALAS2-2018-1038 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | perf +11 | 3.10.0-862.11.6.el7 | ELSA-2018-2384 |
Advisories 8
- RHSA-2019:1946 Red Hat Security Advisory: kernel security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jul 1, 2026
- RHSA-2018:2390 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jul 1, 2026
- RHSA-2020:0174 Red Hat Security Advisory: kernel-alt security and bug fix update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2018:2395 Red Hat Security Advisory: kernel-rt security and bug fix update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2018:2384 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- WID-SEC-2025-1212 Oracle Communications Applications: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jun 2, 2025
- ALAS2-2018-1038 Important: kernel security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Sep 15, 2018
- ELSA-2018-2384 Important: kernel security and bug fix update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Aug 14, 2018
References
- RHSA-2018:2390 vendor-advisory
- RHSA-2018:2395 vendor-advisory
- RHSA-2018:2384 vendor-advisory
- RHSA-2019:1946 vendor-advisory
- RHSA-2020:0174 vendor-advisory
- https://www.oracle.com/security-alerts/cpujul2020.html
- https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html
- https://help.ecostruxureit.com/display/public/UADCE725/Security+fixes+in+StruxureWare+Data+Center+Expert+v7.6.0
- https://security.netapp.com/advisory/ntap-20180823-0001/
- https://www.oracle.com/security-alerts/cpuoct2020.html
- https://cdrdv2.intel.com/v1/dl/getContent/685359