CVE-2023-31084
Debian Linux 10.0 … 12.0
Raw vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HCVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.
Summary
CVE-2023-31084 is a medium-severity Deadlock (CWE-833) vulnerability in Debian Debian Linux. Its CVSS base score is 5.5 (Medium).
Operationally, exploitation aligns with the MITRE ATT&CK technique Junk Data (T1001.001); ranked at the 34th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-35413
Vulnerability Data
An issue was discovered in drivers/media/dvb-core/dvb_frontend.c in the Linux kernel 6.2. There is a blocking operation when a task is in !TASK_RUNNING. In dvb_frontend_get_event, wait_event_interruptible is called; the condition is dvb_frontend_test_event(fepriv,events). In dvb_frontend_test_event, down(&fepriv->sem) is called. However, wait_event_interruptible would put…
more
the process to sleep, and down(&fepriv->sem) may block the process.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise Techniques
CVEs Like This One
Affected Assets
Mitigating Controls
Control response
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V15.4.3
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Advance scheduling and deconfliction of security tasks lowers the chance that overlapping operations will produce deadlock conditions on shared resources.
Mitigating Controls (NIST CSF 2.0) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.
Secure SDLC practices can include concurrency analysis and lock discipline to avoid deadlock conditions.
Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.
A.8.25 mandates a secure SDLC process with checkpoints, secure coding, testing and training; none of those steps stop an existing deadlock from being exploitable, they only aim to reduce the chance one is introduced
A.8.27 mandates establishing and applying secure engineering principles (defense-in-depth, least privilege, fail securely, security by design, etc.) and performing design reviews; deadlock is a runtime concurrency flaw in implementation or threading logic that these principles and reviews do not stop from being introduced or exploited.
Secure coding standards mandate safe lock ordering, timeouts, and deadlock detection patterns.
Security testing in development can detect deadlock conditions through stress and concurrency testing.