CVE-2026-64573

UNRATEDCVSS · not yet scoredTrending — 5 sources updated this week
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EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • No CVSS published and no exploitation signals yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS v2: —Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

In the Linux kernel, the following vulnerability has been resolved:

Bluetooth: qca: fix NVM tag length underflow in TLV parser

In the TLV_TYPE_NVM branch of qca_tlv_check_data() the tag loop bound is "while (idx < length - sizeof(struct tlv_type_nvm))". "length" is a signed int from the firmware TLV header and sizeof(struct tlv_type_nvm) is a size_t (12), so "length" is converted to size_t and any firmware-supplied "length" < 12 makes the subtraction wrap to a huge value. The loop body then reads a 12-byte struct tlv_type_nvm past the end of the short vmalloc'd firmware buffer (and the EDL_TAG_ID_* handlers can write past it).

Rewrite the bound as "idx + sizeof(struct tlv_type_nvm) <= length"; both operands are non-negative, so it no longer underflows and a "length" too small for one record correctly skips the loop.

BUG: KASAN: vmalloc-out-of-bounds in qca_download_firmware.isra.0 (drivers/bluetooth/btqca.c:421) Read of size 2 at addr ffffc900000e5004 by task kworker/u9:0/52 Workqueue: hci0 hci_power_on Call Trace: ... kasan_report (mm/kasan/report.c:595) qca_download_firmware.isra.0 (drivers/bluetooth/btqca.c:421 drivers/bluetooth/btqca.c:617) qca_uart_setup (drivers/bluetooth/btqca.c:948) qca_setup (drivers/bluetooth/hci_qca.c:2029) hci_uart_setup (drivers/bluetooth/hci_ldisc.c:438) hci_dev_open_sync (net/bluetooth/hci_sync.c:5227) hci_power_on (net/bluetooth/hci_core.c:920) process_one_work (kernel/workqueue.c:3322) worker_thread (kernel/workqueue.c:3486) kthread (kernel/kthread.c:436) ret_from_fork (arch/x86/kernel/process.c:158) ret_from_fork_asm (arch/x86/entry/entry_64.S:245)

CVSS v3
—
EchelonGraph score
Not yet assessedNo source has published severity data for this CVE yet — no CVSS score from NVD or a CNA, no GitHub advisory, and it is not in CISA KEV. This is not a rating of zero; we cannot assess it yet.
EG Score
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EG Risk
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EPSS PROB
0%
EPSS %ILE
6%
KEV
Not listed

Published

August 5, 2026

Last Modified

August 19, 2026

References (7)

Vendor Advisories for CVE-2026-64573(2)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(3 across 3 ecosystems)
Debian:12(1)
PackageVulnerable rangeFixed inDependents
linux6.1.106-1 ... 7.2~rc5-1~exp1 (338 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 6.12.96-1 (32 versions)6.12.101-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 7.1~rc7-1~exp1 (158 versions)7.1.6-1—

Data Freshness Timeline

(refreshed 20× in last 7d / 35× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-08-20 22:55 UTCEPSS rescore
  2. 2026-08-19 17:27 UTCVendor advisory
  3. 2026-08-19 17:27 UTCGHSA enrichment
  4. 2026-08-19 17:21 UTCNVD update
  5. 2026-08-19 17:04 UTCEPSS rescore
  6. 2026-08-19 16:56 UTCVendor advisory
  7. 2026-08-19 16:56 UTCGHSA enrichment
  8. 2026-08-19 16:43 UTCMITRE cvelistV5
  9. 2026-08-18 13:48 UTCEPSS rescore
  10. 2026-08-17 13:47 UTCEPSS rescore
  11. 2026-08-17 05:42 UTCVendor advisory
  12. 2026-08-17 05:42 UTCGHSA enrichment
  13. 2026-08-17 05:25 UTCNVD update
  14. 2026-08-17 05:13 UTCVendor advisory
  15. 2026-08-17 05:13 UTCGHSA enrichment
  16. 2026-08-17 05:05 UTCMITRE cvelistV5
  17. 2026-08-16 14:56 UTCEPSS rescore
  18. 2026-08-15 01:30 UTCEPSS rescore
  19. 2026-08-14 19:26 UTCVendor advisory
  20. 2026-08-14 19:26 UTCGHSA enrichment
  21. 2026-08-13 22:00 UTCEPSS rescore
  22. 2026-08-12 13:51 UTCEPSS rescore
  23. 2026-08-11 15:45 UTCVendor advisory
  24. 2026-08-11 15:44 UTCGHSA enrichment
  25. 2026-08-11 00:00 UTCEPSS rescore
Show 10 more
  1. 2026-08-09 13:47 UTCEPSS rescore
  2. 2026-08-08 16:37 UTCEPSS rescore
  3. 2026-08-08 12:03 UTCEG score recompute
  4. 2026-08-08 12:03 UTCGHSA enrichment
  5. 2026-08-06 13:47 UTCEPSS rescore
  6. 2026-08-05 19:17 UTCEPSS rescore
  7. 2026-08-05 19:17 UTCEPSS rescore
  8. 2026-08-05 08:20 UTCNVD update
  9. 2026-08-05 08:12 UTCEG score recompute
  10. 2026-08-05 08:10 UTCMITRE cvelistV5first tracked

Frequently asked(4)

What is CVE-2026-64573?
CVE-2026-64573 is a publicly disclosed vulnerability published on August 5, 2026. In the Linux kernel, the following vulnerability has been resolved: Bluetooth: qca: fix NVM tag length underflow in TLV parser In the TLVTYPENVM branch of qcatlvcheck_data() the tag loop bound is "while (idx < length - sizeof(struct tlvtypenvm))". "length" is a signed int from the firmware TLV…
When was CVE-2026-64573 disclosed?
CVE-2026-64573 was first published in the National Vulnerability Database on August 5, 2026, with the most recent update on August 19, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-64573 actively exploited?
CVE-2026-64573 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 94.2% of all scored CVEs.
How do I remediate CVE-2026-64573?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-64573, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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