Security readout for executives and security teams
Plain-English summary
CVE-2023-52699 is a Linux kernel SysV filesystem bug that can put the kernel into an unsafe sleep while holding a spin lock. The documented impact is availability loss, not data theft or corruption. It matters most for systems running affected kernels with SysV filesystem functionality present or reachable.
Executive priority
Treat this as routine but time-bound kernel maintenance. It is not evidenced as exploited, and impact is availability only, but kernel denial-of-service bugs can affect business continuity on shared or exposed infrastructure.
Technical view
The SysV filesystem called sb_bread() while pointers_lock was held, creating a sleep-in-atomic-context condition. The issue traces to historical locking changes and was resolved by restructuring the locking path. CVSS is 5.3 with availability impact only. The bundle provides Linux stable commit references and Debian LTS advisories.
Likely exposure
Exposure is limited to Linux systems running affected kernel builds where SysV filesystem code is present. The source bundle lists Linux as affected and provides stable kernel fixes plus Debian LTS advisories, but it does not identify specific distributions beyond Debian references or confirm default reachability.
Exploitation context
The bundle does not show active exploitation. KEV is false, and the public description references syzbot detection rather than real-world attacks. The CVSS vector is network, unauthenticated, and no user interaction, but the sources do not describe a concrete exploitation path.
Researcher notes
The strongest evidence is the upstream Linux resolution text and stable commit references. The affected-version data in the bundle is sparse and includes kernel release identifiers without distribution mapping. Avoid assuming exploitability beyond the CVSS and source description.
Mitigation direction
- Apply vendor kernel updates containing the referenced SysV filesystem fix.
- For Debian LTS systems, review and apply the cited Debian security updates.
- Prioritize internet-facing or multi-tenant Linux systems first.
- Check vendor advisories for exact package names and reboot requirements.
- Disable unused SysV filesystem support only if vendor-supported and operationally safe.
Validation and detection
- Inventory Linux kernel versions across servers, appliances, and container hosts.
- Check whether installed kernels include one of the referenced stable fixes.
- Review Debian LTS advisory status for applicable Debian hosts.
- Confirm patched kernels are booted, not merely installed.
- Monitor kernel logs for filesystem or lockup warnings after update.
Public sources used
- CVE Program
- CVE List V5
- Linux stable commit 13b33feb
- Linux stable commit 1b4fe801
- Linux stable commit 674c1c42
- Linux stable commit fd203d2c
- Linux stable commit 53cb1e52
- Linux stable commit 89e85241
- Linux stable commit a6922422
- Linux stable commit f123dc86
- Debian LTS advisory 2024-06-17
- Debian LTS advisory 2024-06-18
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.
CVE-2023-52699 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
- 5.3 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
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:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L3.91.4CISA-ADPVulnerability scoring details
Base CVSS 3.1 score
5.3MediumVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
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/13b33feb2ebddc2b1aa607f553566b18a4af1d76CVE reference, Linux
- https://git.kernel.org/stable/c/1b4fe801b5bedec2b622ddb18e5c9bf26c63d79fCVE reference, Linux
- https://git.kernel.org/stable/c/674c1c4229e743070e09db63a23442950ff000d1CVE reference, Linux
- https://git.kernel.org/stable/c/fd203d2c671bdee9ab77090ff394d3b71b627927CVE reference, Linux
- https://git.kernel.org/stable/c/53cb1e52c9db618c08335984d1ca80db220ccf09CVE reference, Linux
- https://git.kernel.org/stable/c/89e8524135a3902e7563a5a59b7b5ec1bf4904acCVE reference, Linux
- https://git.kernel.org/stable/c/a69224223746ab96d43e5db9d22d136827b7e2d3CVE reference, Linux
- https://git.kernel.org/stable/c/f123dc86388cb669c3d6322702dc441abc35c31eCVE reference, Linux
- https://lists.debian.org/debian-lts-announce/2024/06/msg00017.htmlCVE reference, CVE · x_transferred
- https://lists.debian.org/debian-lts-announce/2024/06/msg00020.htmlCVE reference, CVE · x_transferred
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.