Description
Relax-and-Recover (aka ReaR) through 2.7 creates a world-readable initrd when using GRUB_RESCUE=y. This allows local attackers to gain access to system secrets otherwise only readable by root.
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 | rear | 2.7+dfsg-1.2 | — |
| Debian 13 | rear | 2.7+dfsg-1.2 | — |
| Debian 12 | rear | 2.7+dfsg-1+deb12u1 | — |
| Debian 11 | rear | 2.6+dfsg-1+deb11u1 | DLA-4400-1 |
| Debian 10 | rear | 2.4+dfsg-1+deb10u1 | DLA-3733-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 22.04 LTS | rear | 2.6+dfsg-1+deb11u1build0.22.04.1 | USN-8988-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 20.04 LTS | rear | 2.5+dfsg-1ubuntu0.1~esm1 | USN-8988-1 |
| Ubuntu Pro 18.04 LTS | rear | 2.3+dfsg-1ubuntu0.1~esm1 | USN-8988-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9 | rear | 2.6-21.el9_3 | RHSA-2024:1147 |
| RHEL 8 | rear | 2.6-11.el8_9 | RHSA-2024:1719 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 9 | rear | 2.6-21.el9_3.alma | ALSA-2024:1147 |
| AlmaLinux 8 | rear | 2.6-11.el8_9.alma.1 | ALSA-2024:1719 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 8 | rear | 2.6-11.el8_9 | RLSA-2024:1719 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP5 | rear23a | 2.3.a-150300.21.3.1 | SUSE-SU-2024:0247-1 |
| SLES 15 SP5 | rear27a | 2.7-150500.3.3.1 | SUSE-SU-2024:0657-1 |
| SLES 15 SP4 | rear23a | 2.3.a-150300.21.3.1 | SUSE-SU-2024:0247-1 |
| SLES 15 SP4 | rear27a | 2.7-150200.5.6.1 | SUSE-SU-2024:0253-1 |
| SLES 15 SP3 | rear23a | 2.3.a-150300.21.3.1 | SUSE-SU-2024:0247-1 |
| SLES 15 SP3 | rear27a | 2.7-150200.5.6.1 | SUSE-SU-2024:0253-1 |
| SLES 15 SP2 | rear23a | 2.3.a-150000.9.9.1 | SUSE-SU-2024:0239-1 |
| SLES 15 SP2 | rear27a | 2.7-150200.5.6.1 | SUSE-SU-2024:0253-1 |
| SLES 15 SP1 | rear23a | 2.3.a-150000.9.9.1 | SUSE-SU-2024:0239-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP5 | rear116 | 1.16-15.3.1 | SUSE-SU-2024:0291-1 |
| SLES 12 SP5 | rear1172a | 1.17.2.a-5.3.1 | SUSE-SU-2024:0292-1 |
| SLES 12 SP5 | rear118a | 1.18.a-9.3.1 | SUSE-SU-2024:0190-1 |
| SLES 12 SP5 | rear23a | 2.3.a-3.9.1 | SUSE-SU-2024:0148-1 |
| SLES 12 SP5 | rear27a | 2.7-8.6.1 | SUSE-SU-2024:0135-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | rear | 2.7-2.1 | openSUSE-SU-2024:13612-1 |
| openSUSE Leap 15.5 | rear23a | 2.3.a-150300.21.3.1 | SUSE-SU-2024:0247-1 |
| openSUSE Leap 15.5 | rear27a | 2.7-150500.3.3.1 | SUSE-SU-2024:0657-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | rear | 2.00-7.amzn2.0.1 | ALAS2-2024-2451 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | rear | No fix yet | — |
| Azure Linux 2 (CBL-Mariner) | rear | No fix yet | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 9 | rear | 2.6-21.0.1.el9_3 | ELSA-2024-1147 |
| Oracle Linux 8 | rear | 2.6-11.0.1.el8_9 | ELSA-2024-1719 |
Advisories 22
- USN-8988-1 rear vulnerability Ubuntu Security Notices (USN) · Nov 4, 2026
- ALSA-2024:1147 Moderate: rear security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2024:1719 Moderate: rear security update AlmaLinux Security Advisories · Oct 29, 2026
- RHSA-2024:1719 Red Hat Security Advisory: rear security update Red Hat Security Advisories (RHSA) · Mar 18, 2026
- RHSA-2024:1147 Red Hat Security Advisory: rear security update Red Hat Security Advisories (RHSA) · Mar 18, 2026
- DLA-3733-1 rear - security update Debian Security (DSA / DLA) · Mar 9, 2026
- RLSA-2024:1719 Moderate: rear security update Rocky Linux Security Advisories · Feb 4, 2026
- SUSE-SU-2024:0135-1 Security update for rear27a SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:0190-1 Security update for rear118a SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:13612-1 rear-2.7-2.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:0291-1 Security update for rear116 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:0657-1 Security update for rear27a SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:0239-1 Security update for rear23a SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:0148-1 Security update for rear23a SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:0247-1 Security update for rear23a SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:0292-1 Security update for rear1172a SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:0253-1 Security update for rear27a SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2024-0558 Red Hat Enterprise Linux: Mehrere Schwachstellen BSI CERT-Bund (WID) · Dec 10, 2025
- DLA-4400-1 rear - security update Debian Security (DSA / DLA) · Dec 10, 2025
- ELSA-2024-1719 Moderate: rear security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Apr 9, 2024
- ELSA-2024-1147 Moderate: rear security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Mar 6, 2024
- ALAS2-2024-2451 Moderate: rear security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Feb 19, 2024