Security readout for executives and security teams
Plain-English summary
A Linux kernel ring-buffer locking flaw can let concurrent buffer reconfiguration and reading corrupt memory access, potentially causing crashes. The supplied CVSS assessment also allows serious confidentiality, integrity, and availability impact. Exploitation requires local access, and the available evidence does not establish real-world attacks.
Executive priority
Treat this as a high-priority kernel maintenance issue, especially on systems permitting untrusted local users or workloads. It is not evidence of an emergency internet-wide threat: no remote vector or active exploitation is supported. Patch through normal vendor channels after confirming affected builds.
Technical view
ring_buffer_subbuf_order_set() replaced per-CPU sub-buffers and modified page metadata and pointers without exclusively synchronizing with readers. A reader could consequently observe inconsistent state and access memory incorrectly. The upstream correction takes reader_lock while updating each ring_buffer_per_cpu structure.
Likely exposure
Exposure is limited to affected Linux kernels where ring-buffer sub-buffer order changes can overlap active readers. The bundle lists affected boundaries involving 6.8, 6.11.6, and 6.12, but its version representation is ambiguous. Confirm exact exposure against kernel or distribution advisories and backport status.
Exploitation context
The CVSS vector indicates a local, low-privileged, low-complexity path requiring no user interaction. However, the sources do not document required configuration, a public exploit, demonstrated privilege escalation, or active exploitation. The record is not identified as KEV.
Researcher notes
This is CWE-667: improper locking around shared per-CPU ring-buffer state. The described consequence is inconsistent page metadata or pointers, producing incorrect memory access and crashes. Although CVSS assigns high impact across confidentiality, integrity, and availability, the supplied references do not establish a reliable exploitation primitive beyond the race condition.
Mitigation direction
- Upgrade to a vendor-supported kernel containing the cited locking fix or its verified backport.
- Review distribution security guidance to determine the corrected package version for each deployed operating system.
- Reboot into the corrected kernel after installation and verify the running version.
- Prioritize multi-user or untrusted-workload systems while exact reachability is assessed.
Validation and detection
- Inventory running kernel versions across hosts, containers' hosts, appliances, and virtual-machine images.
- Check vendor package changelogs for CVE-2024-50207 or either cited fix commit.
- Verify patched systems booted the intended kernel rather than retaining the vulnerable kernel.
- Review kernel logs for ring-buffer-related crashes, invalid memory access, or warnings.
- Test concurrent ring-buffer reading and supported reconfiguration safely in a non-production environment.
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
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-667: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2024-50207 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
- High
- CVSS
- 7.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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
2 official scoresWe 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:H/I:H/A:H1.85.9LinuxCVSS: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
7.8HighVector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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/a569290525a05162d5dd26d9845591eaf46e5802CVE reference, Linux
- https://git.kernel.org/stable/c/09661f75e75cb6c1d2d8326a70c311d46729235fCVE 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.