Security readout for executives and security teams
Plain-English summary
This Linux kernel issue can make systems using md RAID10 hang during recovery after a read I/O failure. The impact is availability, not data theft or privilege escalation. It matters most for servers relying on software RAID10 where storage recovery operations are operationally critical.
Executive priority
Treat as a moderate infrastructure reliability issue. Prioritize patching storage-critical Linux servers using software RAID10, but do not escalate as an internet-facing compromise without additional evidence.
Technical view
In md/raid10 recovery, raid10_sync_request() increments r10bio->remaining for both the primary and replacement device. If read I/O fails, recovery_request_write() can return without issuing writes, so end_sync_request() is called only once and remaining is leaked, causing an I/O hang.
Likely exposure
Exposure is limited to Linux systems using the md RAID10 driver, especially during recovery or replacement-device workflows. CVSS requires local access and low privileges, with high availability impact. The bundle lists multiple Linux kernel versions as affected, but does not map distro package versions.
Exploitation context
The source bundle does not show active exploitation, and KEV is false. The plausible risk is local availability disruption when RAID10 recovery hits the described failed-read path. No source in the bundle supports remote exploitation or confidentiality impact.
Researcher notes
The key condition is a reference-count leak in r10bio->remaining after read failure prevents expected completion handling. Evidence is strong for root cause and availability impact, but the bundle does not provide exploit reports, distro fix matrices, or operational workarounds.
Mitigation direction
- Apply vendor kernel updates containing the referenced md/raid10 stable fixes.
- Prioritize systems using Linux md RAID10 for critical storage availability.
- Check Linux distribution advisories for exact fixed package versions.
- Schedule updates around storage maintenance windows and RAID recovery risk.
- Avoid direct wrangler/deployment relevance; this is kernel infrastructure maintenance.
Validation and detection
- Inventory hosts running Linux md RAID10 arrays.
- Compare running kernels against vendor fixed package guidance.
- Review whether RAID10 recovery or replacement operations are pending or recurring.
- Monitor affected hosts for I/O hangs during md RAID recovery.
- Confirm patched kernels include the referenced upstream stable commits.
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-401: Exact CWE lookup
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Open ATT&CK lookupCVE-2023-53299 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/cb827ed2bb34480dc102146d3a1f89fdbcafc028CVE reference, Linux
- https://git.kernel.org/stable/c/1d2c6c6e37fe5de11fd01a82badf03390e12df7aCVE reference, Linux
- https://git.kernel.org/stable/c/8c5d5d7ffd1e76734811b8ea5417cf0432b9952cCVE reference, Linux
- https://git.kernel.org/stable/c/1697fb124c6d6c5237e9cbd78890310154738084CVE reference, Linux
- https://git.kernel.org/stable/c/8d09065802c53cc938d162b62f6c4150b392c90eCVE reference, Linux
- https://git.kernel.org/stable/c/11141630f03efffdfe260b3582b2d93d38171b97CVE reference, Linux
- https://git.kernel.org/stable/c/3481dec5ecbbbbe44ab23e22c2b14bd65c644ec6CVE reference, Linux
- https://git.kernel.org/stable/c/4f82e7e07cdaf2947d71968e3d6b73370a217093CVE reference, Linux
- https://git.kernel.org/stable/c/26208a7cffd0c7cbf14237ccd20c7270b3ffeb7eCVE 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.
Missing Release of Memory after Effective Lifetime
Missing Release of Memory after Effective Lifetime represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.