Security readout for executives and security teams
Plain-English summary
This Linux kernel issue can crash or destabilize affected real-time kernels when BPF local storage allocates memory in a context where sleeping is unsafe. The impact is availability only: the sources do not indicate data theft, privilege escalation, or active exploitation.
Executive priority
Treat as a moderate availability risk. Prioritize real-time Linux hosts where downtime matters, especially systems allowing local users or BPF-based monitoring. No evidence in the bundle supports emergency response for active exploitation.
Technical view
In CONFIG_PREEMPT_RT kernels, bpf_local_storage could use kmalloc(GFP_ATOMIC) in non-preemptible context, triggering a sleeping-function-in-invalid-context bug. The fix enforces bpf_mem_alloc for BPF local storage when PREEMPT_RT is enabled. CVSS is 5.5 with local, low-complexity, low-privilege availability impact.
Likely exposure
Exposure is most likely on Linux systems running PREEMPT_RT kernels with BPF local storage activity. Source version data identifies Linux as affected and references stable kernel fixes, but does not provide distribution-specific package status or CPEs.
Exploitation context
The bundle does not show CISA KEV listing or active exploitation. The CVSS vector requires local low-privilege access and no user interaction. Practical risk depends on local BPF permissions, real-time kernel usage, and vendor backport status.
Researcher notes
The kernel report attributes the bug to PREEMPT_RT allocation semantics in BPF local storage and notes it is an old issue. Evidence is sufficient for root cause and fix direction, but incomplete for distribution impact, exploitability in hardened environments, and real-world abuse.
Mitigation direction
- Apply vendor kernel updates that include the referenced stable fixes.
- Check Linux distribution advisories for package-specific fixed versions.
- Restrict untrusted local access on affected real-time kernel systems.
- Review and harden local BPF loading permissions where operationally feasible.
- Prioritize patching systems using PREEMPT_RT and BPF observability workloads.
Validation and detection
- Identify systems running Linux kernels with CONFIG_PREEMPT_RT enabled.
- Compare installed kernel builds against vendor advisories and referenced stable commits.
- Inventory systems using BPF local storage or tracing programs.
- Review kernel logs for sleeping-function or bpf_local_storage related warnings.
- Confirm patched kernels are deployed after maintenance.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
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ATT&CK lookup starting points
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CWE-667: Exact CWE lookup
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Open ATT&CK lookupCVE-2024-58070 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 5.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
SSVC decision data
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H1.83.6CISA-ADPVulnerability scoring details
Base CVSS 3.1 score
5.5MediumVector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://git.kernel.org/stable/c/3392fa605d7c5708c5fbe02e4fbdac547c3b7352CVE reference, Linux
- https://git.kernel.org/stable/c/b0027500000dfcb8ee952557d565064cea22c43eCVE reference, Linux
- https://git.kernel.org/stable/c/c1d398a3af7e59d7fef351c84fed7ebb575d1f1aCVE reference, Linux
- https://git.kernel.org/stable/c/8eef6ac4d70eb1f0099fff93321d90ce8fa49ee1CVE reference, Linux
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Locking
Improper Locking represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.