Security readout for executives and security teams
Plain-English summary
This is a Linux kernel race condition in workqueue accounting. Under concurrent worker activity, internal per-workqueue statistics can be updated unsafely. The CVSS impact is availability only, with local access, low privileges, and high attack complexity required. Treat it as a kernel maintenance priority for affected 6.5-era systems, not an internet-facing emergency.
Executive priority
Schedule remediation through the normal kernel patch cycle, with higher priority for shared systems, developer workstations, and servers where local users or workloads are less trusted. There is no source-backed evidence of internet-scale exploitation or data exposure.
Technical view
CVE-2023-53329 is CWE-362 in kernel/workqueue.c process_one_work, where pwq->stats[] increments could occur without the expected lock protection. KCSAN reported concurrent read/write races in worker threads. The described fix moves the stats increment before raw_spin_unlock_irq(&pool->lock), keeping accounting updates under the lock.
Likely exposure
Exposure is limited to affected Linux kernel versions identified in the CVE source, including 6.5 through 6.5.3 and 6.6 entries. Systems using vendor-patched, backported, or non-affected kernels may not be exposed. Validate against distribution kernel advisories, not upstream version strings alone.
Exploitation context
No provided source reports active exploitation, and the CVE is not listed as KEV. The CVSS vector requires local access, low privileges, no user interaction, and high complexity. The documented impact is availability; the source does not support confidentiality or integrity impact.
Researcher notes
The source evidence is a KCSAN-discovered race in workqueue statistics accounting, not a public exploit report. The trace references btrfs-endio during detection, but the vulnerable code is generic workqueue logic. Availability is rated high in CVSS, while confidentiality and integrity are none.
Mitigation direction
- Apply the relevant Linux kernel stable update or vendor backport.
- Check distribution advisories for the exact fixed package version.
- Prioritize hosts running affected 6.5-era kernels with untrusted local users.
- Use normal kernel change controls and reboot planning.
- Do not assume btrfs is required; it appears in the detection trace only.
Validation and detection
- Inventory running kernel versions across Linux hosts.
- Compare kernels with vendor advisories for CVE-2023-53329.
- Confirm fixed upstream commits are present or backported.
- Review kernel update history for affected 6.5 through 6.6 builds.
- Check vulnerability scanners for local-privesc-style kernel findings.
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
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-362: 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-2023-53329 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
- 4.7 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:H/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:H/PR:L/UI:N/S:U/C:N/I:N/A:H13.6CISA-ADPVulnerability scoring details
Base CVSS 3.1 score
4.7MediumVector: CVSS:3.1/AV:L/AC:H/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/ce55024f28589b0012fa2c6b5748ec5a180b7fbeCVE reference, Linux
- https://git.kernel.org/stable/c/fe48ba7daefe75bbbefa2426deddc05f2d530d2dCVE 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.
Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.