Linux: Uncontrolled Resource Consumption
CVE-2024-38384 is a high-severity uncontrolled resource consumption vulnerability in Linux, with a CVSS 3.1 base score of 7.8 out of 10. It can be exploited with local access to the system by an attacker with a low-privileged account, without any action from a user. The record lists versions 714e59b5456e4d6e4295a9968c564abe193f461c, 785298ab6b802afa75089239266b6bbea590809c, d0aac2363549e12cc79b8e285f13d5a9f42fd08e as the first without the flaw, so updating Linux to one of those releases or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.23% chance of exploitation within 30 days, which is low compared with other CVEs.
High severity with no evidence of exploitation so far.
What to do
- Update Linux to 714e59b5456e4d6e4295a9968c564abe193f461c or 785298ab6b802afa75089239266b6bbea590809c or d0aac2363549e12cc79b8e285f13d5a9f42fd08e, whichever matches your release line, or a later version.
- Update linux_kernel to 714e59b5456e or 785298ab6b80 or d0aac2363549, whichever matches your release line, or a later version.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Linux | Linux | 3b8cc6298724021da845f2f9fd7dd4b6829a6817 up to, but not including, 714e59b5456e4d6e4295a9968c564abe193f461c; 3b8cc6298724021da845f2f9fd7dd4b6829a6817 up to, but not including, 785298ab6b802afa75089239266b6bbea590809c; 3b8cc6298724021da845f2f9fd7dd4b6829a6817 up to, but not including, d0aac2363549e12cc79b8e285f13d5a9f42fd08e; 6.2 | 714e59b5456e4d6e4295a9968c564abe193f461c, 785298ab6b802afa75089239266b6bbea590809c, d0aac2363549e12cc79b8e285f13d5a9f42fd08e |
| Linux | linux_kernel | 3b8cc6298724 up to, but not including, 714e59b5456e; 3b8cc6298724 up to, but not including, 785298ab6b80; 3b8cc6298724 up to, but not including, d0aac2363549; 6.2 | 714e59b5456e, 785298ab6b80, d0aac2363549 |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- LocalThe attacker needs local access or must trick a user into running something.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- LowA basic user account is enough.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- HighData or code can be modified at will.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. Scored by CNA.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 7.8 | High | CNA |
| CVSS 3.1 | 8.4 | High | CISA (ADP) |
Official description
In the Linux kernel, the following vulnerability has been resolved: blk-cgroup: fix list corruption from reorder of WRITE ->lqueued __blkcg_rstat_flush() can be run anytime, especially when blk_cgroup_bio_start is being executed. If WRITE of `->lqueued` is re-ordered with READ of 'bisc->lnode.next' in the loop of __blkcg_rstat_flush(), `next_bisc` can be assigned with one stat instance being added in blk_cgroup_bio_start(), then the local list in __blkcg_rstat_flush() could be corrupted. Fix the issue by adding one barrier.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Uncontrolled Resource Consumption
The product does not properly control the allocation and maintenance of a limited resource.
How developers prevent this class of flaw
- Ensure that protocols have specific limits of scale placed on them.
- Ensure that all failures in resource allocation place the system into a safe posture.
More Uncontrolled Resource Consumption vulnerabilities (CWE-400)
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Patches and release notes
Recent Uncontrolled Resource Consumption vulnerabilities
- 7.5 High severity
- 7.5 High severity
- 7.8 High severity
- 8.2 High severity
- 9.8 Critical severity
- 7.5 High severity
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