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PatchSiren cyber security CVE debrief

CVE-2026-53030 Linux CVE debrief

A memory leak vulnerability was found in the Linux kernel's renesas_i3c_i3c_xfers() function. The xfer structure allocated by renesas_i3c_alloc_xfer() was never freed, leading to a memory leak. This issue has been resolved by using the __free(kfree) cleanup attribute to automatically free the memory when the variable goes out of scope. The vulnerability affects Linux kernel deployments and requires patching to mitigate.

Vendor
Linux
Product
Unknown
CVSS
MEDIUM 5.5
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-24
Original CVE updated
2026-07-14
Advisory published
2026-06-24
Advisory updated
2026-07-14

Who should care

Linux kernel users, maintainers, and security teams should be aware of this vulnerability and ensure they are running a patched version of the kernel. Affected deployments should be identified and prioritized for patching.

Technical summary

The Linux kernel's renesas_i3c_i3c_xfers() function had a memory leak due to the xfer structure not being freed. This was resolved by adding the __free(kfree) cleanup attribute to automatically free the memory when the variable goes out of scope. Linux kernel users and maintainers should review and apply patches to prevent exploitation. Affected deployments should be identified and prioritized for patching, with a focus on Linux kernel versions and configurations that use the renesas_i3c_i3c_xfers() function. Evidence is limited to public CVE and NVD details, and users should verify their deployments for affected versions and review patch guidance from the vendor.

Defensive priority

Medium

Recommended defensive actions

  • Inventory Linux kernel versions and check for patched versions
  • Apply kernel updates or patches
  • Monitor system memory usage for anomalies
  • Review compensating controls for exposed systems while remediation is scheduled and verified
  • Check relevant monitoring, detection, and logs for exposed assets that need extra review
  • Track exceptions, retest remediated assets, and close the item only after evidence is documented
  • Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record was published on 2026-06-24T17:17:14.393Z and last modified on 2026-07-10T19:24:19.850Z. The NVD entry is currently Awaiting Analysis. Linux kernel users should verify their deployments for affected versions and review patch guidance from the vendor. Evidence is limited to public CVE and NVD details.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-53030 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-53030

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-53030 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-53030

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • Source reference

    Unverified legacy reference

    URL: https://git.kernel.org/stable/c/1b6a7e94be678d34a9ccb9db7e2443ae02ad2bc8

    416baaa9-dc9f-4396-8d5f-8c081fb06d67

  • Source reference

    Unverified legacy reference

    URL: https://git.kernel.org/stable/c/ab8f00ffcca0f618fb8198d358f24728950d9860

    416baaa9-dc9f-4396-8d5f-8c081fb06d67

  • Source reference

    Unverified legacy reference

    URL: https://git.kernel.org/stable/c/d7665c3b4f575251e449e2656879392346ca612b

    416baaa9-dc9f-4396-8d5f-8c081fb06d67

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.