CVE-2024-23850: Linux kernel · Reachable Assertion
Affects Linux kernelSource CVE Database V5
Not known to be exploited · CVSS 5.5 Medium : upgrade to 6.7.2 when convenient.
Data as of 26 Oct 2026, 14:05 UTC
- EPSS
- 0.3% chance of exploitation in 30 days – higher than 23% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 6.7.2
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitation evidence
Disclosed: evidence found.
CVE published 23 Jan 2024
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Upgrade the Red Hat redhat/kernel package to 6.7.2.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Red Hatredhat/kernelpkg:rpm/redhat/kernelOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
- Monitor Linux kernel updates and apply patches addressing CVE-2024-23850 promptly once released.
- Restrict local user privileges to prevent untrusted users from creating or manipulating Btrfs subvolumes.
- Implement strict access controls and auditing on systems using Btrfs to detect unusual subvolume creation or modification activities.
- Consider temporarily avoiding Btrfs subvolume creation or usage in environments where local privilege separation is weak until patched.
- Employ kernel crash monitoring and automated recovery mechanisms to minimize downtime in case of assertion failures.
- For critical systems, evaluate alternative filesystems or configurations that do not expose this vulnerability until a fix is applied.
- Educate system administrators about the vulnerability to ensure awareness and readiness to respond to potential incidents.
Description
In btrfs_get_root_ref in fs/btrfs/disk-io.c in the Linux kernel through 6.7.1, there can be an assertion failure and crash because a subvolume can be read out too soon after its root item is inserted upon subvolume creation.
References
- lore.kernel.org/lkml/CALGdzuo6awWdau3X=8XK547x2vX_-VoFmH1aPsqosRTQ5WzJVA%40mail.gmail.com/ (opens in a new tab)
- lore.kernel.org/all/6a80cb4b32af89787dadee728310e5e2ca85343f.1705741883.git.wqu%40suse.com/ (opens in a new tab)
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EZOU3745CWCDZ7EMKMXB2OEEIB5Q3IWM/ (opens in a new tab)
- lists.debian.org/debian-lts-announce/2024/06/msg00017.html (opens in a new tab)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/EZOU3745CWCDZ7EMKMXB2OEEIB5Q3IWM/ (opens in a new tab)