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CVE-2025-71100 Linux CVE debrief

The Linux kernel vulnerability CVE-2025-71100 is caused by a potential array-index-out-of-bounds error in the rtlwifi driver. The issue arises from the TID value obtained from ieee80211_get_tid() which may exceed the array size of sta_entry->tids[]. To fix this, a check is added to ensure that the TID is less than MAX_TID_COUNT. Users of the Linux kernel, especially those using versions 6.9.1 to 6.12.64, 6.13 to 6.18.4, and specific release candidates of version 6.19, should review and apply patches as soon as possible. This vulnerability has a high CVSS score of 7.6 and is related to the Linux kernel. System administrators, security teams, and operators should prioritize patching affected systems and monitor for potential exploitation attempts. Evidence is limited, and defenders should verify affected system inventory, review vendor patch guidance, and monitor for potential exploitation attempts. The CVE record was published on 2026-01-13T16:16:09.920Z and has not been modified since then. The NVD entry is currently Modified.

Vendor
Linux
Product
Unknown
CVSS
HIGH 7.6
CISA KEV
Not listed in stored evidence
Original CVE published
2026-01-13
Original CVE updated
2026-07-30
Advisory published
2026-01-13
Advisory updated
2026-07-30

Who should care

Users of the Linux kernel, especially those using versions 6.9.1 to 6.12.64, 6.13 to 6.18.4, and specific release candidates of version 6.19, should review and apply patches as soon as possible. This vulnerability has a high CVSS score of 7.6 and is related to the Linux kernel. System administrators, security teams, and operators should prioritize patching affected systems and monitor for potential exploitation attempts.

Technical summary

The vulnerability is caused by a potential array-index-out-of-bounds error in the rtlwifi driver. The issue arises from the TID value obtained from ieee80211_get_tid() which may exceed the array size of sta_entry->tids[]. To fix this, a check is added to ensure that the TID is less than MAX_TID_COUNT. This vulnerability affects Linux kernel versions 6.9.1 to 6.12.64, 6.13 to 6.18.4, and specific release candidates of version 6.19.

Defensive priority

This vulnerability has a high CVSS score of 7.6 and is related to the Linux kernel. It is recommended to review and apply patches as soon as possible.

Recommended defensive actions

  • Review and apply patches from the Linux kernel maintainers
  • Check system inventory for affected Linux kernel versions
  • Monitor for potential exploitation attempts
  • Perform vulnerability scanning
  • Implement compensating controls
  • Review system logs for suspicious activity
  • Verify patch application

Evidence notes

The vulnerability is caused by a potential array-index-out-of-bounds error in the rtlwifi driver. The issue arises from the TID value obtained from ieee80211_get_tid() which may exceed the array size of sta_entry->tids[]. To fix this, a check is added to ensure that the TID is less than MAX_TID_COUNT. Evidence is limited, and defenders should verify affected system inventory, review vendor patch guidance, and monitor for potential exploitation attempts.

Sources and references

Verified primary and authoritative sources

  • CVE-2025-71100 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2025-71100

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

  • CVE-2025-71100 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2025-71100

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

Supplemental references

  • Mitigation or vendor reference

    Unverified legacy reference

    URL: https://git.kernel.org/stable/c/90a15ff324645aa806d81fa349497cd964861b66

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

  • Mitigation or vendor reference

    Unverified legacy reference

    URL: https://git.kernel.org/stable/c/9765d6eb8298b07d499cdf9ef7c237d3540102d6

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

  • Mitigation or vendor reference

    Unverified legacy reference

    URL: https://git.kernel.org/stable/c/dd39edb445f07400e748da967a07d5dca5c5f96e

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

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.