LiveActive security incident?Get immediate response
CVE Record

CVE-2026-23324: can: usb: etas_es58x: correctly anchor the urb in the read bulk callback

In the Linux kernel, the following vulnerability has been resolved: can: usb: etas_es58x: correctly anchor the urb in the read bulk callback When submitting an urb, that is using the anchor pattern, it needs to be anchored before submitting it otherwise it could be leaked if usb_kill_anchored_urbs() is called. This logic is correctly done elsewhere in the driver, except in the read bulk callback so do that here also.

UnknownCVSS not scoredNot KEV-listedUpdated
Discuss exposureBack to CVEs
Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

CVE-2026-23324 is a Linux kernel driver bug affecting ETAS ES58x USB CAN adapter handling. The issue can leak a USB request during cleanup or error handling. Business urgency depends on whether affected Linux systems use this specific CAN USB driver. No CVSS score, CWE, or exploitation evidence is provided.

Executive priority

Track and remediate through normal Linux kernel patch management unless ETAS ES58x USB CAN adapters are used in operational environments. Escalate priority for industrial, lab, automotive, or embedded systems where CAN availability matters and kernel update windows are constrained.

Technical view

In the Linux kernel etas_es58x CAN USB driver, the read bulk callback submitted an URB before anchoring it. If usb_kill_anchored_urbs() ran during that window, the URB could be leaked. The stable fixes align this path with the driver's existing anchor-before-submit pattern.

Likely exposure

Exposure appears limited to Linux systems with affected kernel builds where the ETAS ES58x USB CAN driver is present and used. The source bundle lists Linux as affected across multiple kernel version lines, but distribution backport status must be confirmed separately.

Exploitation context

The bundle does not report active exploitation, public exploit use, KEV listing, CVSS, or practical impact beyond an URB leak. Treat exploitation status as unproven. Operational impact is more plausible for systems using CAN bus tooling or embedded/industrial Linux deployments with ETAS ES58x hardware.

Researcher notes

The evidence supports a kernel driver resource-management flaw, not a demonstrated privilege escalation or remote attack. The affected-version data is broad and commit-based, so researchers should validate exact kernel lineage and downstream backports before declaring exposure.

Mitigation direction

  • Update affected Linux kernels through the distribution or vendor security channel.
  • Confirm the update contains one of the referenced stable kernel fixes.
  • Check vendor guidance if no patched kernel package is available.
  • Prioritize systems using ETAS ES58x USB CAN adapters or related CAN workflows.

Validation and detection

  • Inventory Linux kernel versions across relevant fleets.
  • Identify systems where the etas_es58x driver is built, loadable, or in use.
  • Compare kernel package changelogs against the referenced stable commits.
  • Confirm distribution advisories for backported fixes before marking systems remediated.
Prepared
Confidence
medium
Sources
9

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

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 · low confidence lookup

CVE-2026-23324 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

Open ATT&CK lookup
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
8Source 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
LinuxLinux8537257874e949a59c834cecfd5a063e11b64b0b, 8537257874e949a59c834cecfd5a063e11b64b0b, 8537257874e949a59c834cecfd5a063e11b64b0b, 8537257874e949a59c834cecfd5a063e11b64b0b, 8537257874e949a59c834cecfd5a063e11b64b0b, 8537257874e949a59c834cecfd5a063e11b64b0b, 8537257874e949a59c834cecfd5a063e11b64b0bunaffected
LinuxLinux5.13, 0, 5.15.203, 6.1.167, 6.6.130, 6.12.77, 6.18.17, 6.19.7, 7.0affected
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.