CVE-2024-23301

Publication date 12 January 2024

Last updated 3 November 2026

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

5.5 · Medium

Score breakdown

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.

Read the notes from the security team

Status

Package Ubuntu Release Status
rear 26.10 stonking
Not affected
26.04 LTS resolute
Not affected
25.10 questing
Not affected
25.04 plucky Ignored end of life, was needs-triage
24.10 oracular Ignored end of life, was needs-triage
24.04 LTS noble
Not affected
23.10 mantic Ignored end of life, was needs-triage
23.04 lunar Ignored end of life, was needs-triage
22.04 LTS jammy
Fixed in 2.6+dfsg-1+deb11u1build0.22.04.1
20.04 LTS focal
Fixed in 2.5+dfsg-1ubuntu0.1~esm1
18.04 LTS bionic
Fixed in 2.3+dfsg-1ubuntu0.1~esm1
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release

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Notes

john-breton

rear appears to be FTBFS for bionic, focal, and jammy.

Severity score breakdown

CVSS version: CVSS v3.0

Base score 5.5 · Medium

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

References

Related Ubuntu Security Notices (USN)

    • USN-8988-1
    • Relax-and-Recover vulnerability
    • 3 November 2026

Other references

Access our resources on patching vulnerabilities