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CVE Record

CVE-2023-53622: gfs2: Fix possible data races in gfs2_show_options()

In the Linux kernel, the following vulnerability has been resolved: gfs2: Fix possible data races in gfs2_show_options() Some fields such as gt_logd_secs of the struct gfs2_tune are accessed without holding the lock gt_spin in gfs2_show_options(): val = sdp->sd_tune.gt_logd_secs; if (val != 30) seq_printf(s, ",commit=%d", val); And thus can cause data races when gfs2_show_options() and other functions such as gfs2_reconfigure() are concurrently executed: spin_lock(&gt->gt_spin); gt->gt_logd_secs = newargs->ar_commit; To fix these possible data races, the lock sdp->sd_tune.gt_spin is acquired before accessing the fields of gfs2_tune and released after these accesses. Further changes by Andreas: - Don't hold the spin lock over the seq_printf operations.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

CVE-2023-53622 is a Linux kernel issue in the GFS2 filesystem. The bug involves unsafe concurrent access to tuning fields when mount options are displayed while reconfiguration happens. The public record does not describe a business-impact outcome such as privilege escalation, crash, or data loss.

Executive priority

Treat this as a targeted kernel hygiene item, not an emergency, unless GFS2 is used in critical storage environments. The missing severity score and lack of exploitation evidence reduce urgency, but kernel fixes should still be folded into scheduled maintenance.

Technical view

The issue is a possible data race in gfs2_show_options() where gfs2_tune fields were read without holding gt_spin while gfs2_reconfigure() could update them under that lock. The fix acquires the spin lock before reading those fields and avoids holding it across seq_printf operations.

Likely exposure

Exposure appears limited to Linux systems running affected kernels where the GFS2 filesystem is present and relevant mount option display or reconfiguration paths can execute. Organizations not using GFS2 are less likely to be exposed, based on the provided sources.

Exploitation context

The source bundle reports no KEV listing and provides no evidence of active exploitation. It also does not include exploitability details, attack prerequisites, CVSS scoring, or confirmed security impact beyond possible kernel data races.

Researcher notes

The record is sparse: no CVSS, CWE, exploit status, or concrete impact is provided. Analysis should stay close to the upstream commit rationale: unsynchronized reads of gfs2_tune fields in gfs2_show_options() during concurrent reconfiguration.

Mitigation direction

  • Check Linux distribution advisories for a kernel package containing the GFS2 fix.
  • Update affected kernels through the normal vendor-supported kernel update channel.
  • Prioritize systems using GFS2 over systems without that filesystem in use.
  • If GFS2 is unnecessary, consider disabling or removing operational dependency on it.
  • Track the referenced upstream stable commits against vendor backports.

Validation and detection

  • Inventory Linux hosts for kernel versions and GFS2 usage.
  • Confirm whether vendor kernel packages include the referenced stable fixes.
  • Review clustered storage or shared-disk systems first, where GFS2 is more likely.
  • Verify reboot or live-patch completion after kernel updates.
  • Document systems where GFS2 remains enabled but patch status is pending.
Prepared
Confidence
medium
Sources
10

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

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CVE-2023-53622 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

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.

0CVSS vectors
3Timeline events
0ADP providers
9Source links

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. CVE publishedCVE Program

    The CVE record was published.

  3. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinux48c2b613616235d7c97fda5982f50100a6c79166, 48c2b613616235d7c97fda5982f50100a6c79166, 48c2b613616235d7c97fda5982f50100a6c79166, 48c2b613616235d7c97fda5982f50100a6c79166, 48c2b613616235d7c97fda5982f50100a6c79166, 48c2b613616235d7c97fda5982f50100a6c79166, 48c2b613616235d7c97fda5982f50100a6c79166, 48c2b613616235d7c97fda5982f50100a6c79166unaffected
LinuxLinux2.6.31, 0, 4.14.324, 4.19.293, 5.4.255, 5.10.192, 5.15.128, 6.1.47, 6.4.12, 6.5affected
Weakness

CWE details

No CWE listed

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