CVE-2026-64443

HIGHPre-NVD 8.18.1—
EchelonGraph scoreMEDIUM confidence

Score 8.1 from GitHub Security Advisory (severity: HIGH) published 2026-07-25. a secondary CVSS source baseline 8.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
8.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.1Exploit: None knownExposed: 0

A fix is available — apply it.

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

staging: rtl8723bs: fix OOB read in update_beacon_info() IE loop

The IE parsing loop in update_beacon_info() advances by (pIE->length + 2) each iteration but only guards on i < len. When a malicious AP sends a Beacon whose last IE has only one byte remaining in the frame (the element_id byte lands at len-1), the loop reads pIE->length from one byte past the allocated receive buffer.

Additionally, even when the header bytes are in bounds, pIE->length itself can extend the data window beyond len, passing a truncated IE to the handler functions.

Add two guards at the top of the loop body:

  • Break if fewer than sizeof(*pIE) bytes remain (can't read header).
  • Break if the IE's declared data extends past len.

Also replace i += (pIE->length + 2) with i += sizeof(*pIE) + pIE->length for consistency with the sizeof(*pIE) guards added above.

CVSS v3
8.1
EG Score
8.1(medium)
EG Risk
41(Track)
EG Risk 41/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity81% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
20%
KEV
Not listed

Published

July 25, 2026

Last Modified

September 3, 2026

Advisory Details (7)

Auto-updated Jul 27, 2026
No patch confirmed yet.
generic

staging: rtl8723bs: fix OOB read in update_beacon_info() IE loop - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/ed51de4a86e173c3b0ef78e039c2e49e08b11f16
generic

staging: rtl8723bs: fix OOB read in update_beacon_info() IE loop - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/bd953d52d587d42365e399b96c52dbdb13032070
generic

staging: rtl8723bs: fix OOB read in update_beacon_info() IE loop - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/b5cc2f999927f69723ca53f1f2a3aa37dbeda907
generic

staging: rtl8723bs: fix OOB read in update_beacon_info() IE loop - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/9193c34f75fd9e1ea8a590d7cced464c3380dc29
generic

staging: rtl8723bs: fix OOB read in update_beacon_info() IE loop - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/6dd5e8c3011ebabf417257d7f07901a7c4311539
generic

staging: rtl8723bs: fix OOB read in update_beacon_info() IE loop - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/69f174a0673b6b7a29b851adb60bc450cdc0ecc4
generic

staging: rtl8723bs: fix OOB read in update_beacon_info() IE loop - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/5e8db4cff5b45c7c4edc8ae3f302027c3bb32b25

Vendor Advisories for CVE-2026-64443(2)

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

Patch Availability(3)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-virtual-hwe-26.04-edge (7.0.0-31.31) @ resolute2026-09-15ubuntu
ubuntulinux-tools-gcp-edge (7.0.0-1011.11~24.04.1) @ noble2026-09-15ubuntu
ubuntulinux-tools-oem-7.0 (7.0.0-1013.13) @ resolute2026-09-15ubuntu

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(6 across 4 ecosystems)
Debian:11(2)
PackageVulnerable rangeFixed inDependents
linux5.10.103-1 ... 7.2~rc5-1~exp1 (500 versions)——
linux-6.16.1.106-3~deb11u1 ... 6.1.177-1~deb11u1 (22 versions)6.1.180-1~deb11u1—
Debian:12(2)
PackageVulnerable rangeFixed inDependents
linux6.1.106-1 ... 6.1.99-1 (55 versions)6.1.180-1—
linux-6.12—6.12.100-1~deb12u1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux6.12.38-1 ... 6.12.95-1~bpo12+1 (30 versions)6.12.96-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 7.1~rc7-1~exp1 (158 versions)7.1.4-1—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Additional Vendor Advisories

(3)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 28× in last 7d / 130× 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.

Showing the most recent 100 of 240 total refreshes for this CVE.

  1. 2026-09-15 09:20 UTCEG score recompute
  2. 2026-09-15 09:20 UTCVendor advisory
  3. 2026-09-15 09:20 UTCGHSA enrichment
  4. 2026-09-14 10:15 UTCVendor advisory
  5. 2026-09-14 10:15 UTCGHSA enrichment
  6. 2026-09-13 21:23 UTCEG score recompute
  7. 2026-09-13 21:23 UTCVendor advisory
  8. 2026-09-13 21:23 UTCGHSA enrichment
  9. 2026-09-13 06:10 UTCVendor advisory
  10. 2026-09-13 06:10 UTCGHSA enrichment
  11. 2026-09-12 17:39 UTCEG score recompute
  12. 2026-09-12 17:39 UTCVendor advisory
  13. 2026-09-12 17:39 UTCGHSA enrichment
  14. 2026-09-12 04:56 UTCVendor advisory
  15. 2026-09-12 04:56 UTCGHSA enrichment
  16. 2026-09-11 16:20 UTCEG score recompute
  17. 2026-09-11 16:20 UTCVendor advisory
  18. 2026-09-11 16:20 UTCGHSA enrichment
  19. 2026-09-11 14:53 UTCEPSS rescore
  20. 2026-09-11 09:37 UTCEPSS rescore
  21. 2026-09-11 02:09 UTCVendor advisory
  22. 2026-09-11 02:09 UTCGHSA enrichment
  23. 2026-09-10 10:28 UTCEG score recompute
  24. 2026-09-10 10:28 UTCVendor advisory
  25. 2026-09-10 10:28 UTCGHSA enrichment
Show 75 more
  1. 2026-09-09 08:31 UTCEG score recompute
  2. 2026-09-09 08:31 UTCVendor advisory
  3. 2026-09-09 08:31 UTCGHSA enrichment
  4. 2026-09-08 22:01 UTCEPSS rescore
  5. 2026-09-07 21:12 UTCEG score recompute
  6. 2026-09-07 21:12 UTCVendor advisory
  7. 2026-09-07 21:12 UTCGHSA enrichment
  8. 2026-09-07 16:01 UTCEPSS rescore
  9. 2026-09-06 13:47 UTCEPSS rescore
  10. 2026-09-06 07:56 UTCGHSA enrichment
  11. 2026-09-05 19:19 UTCEG score recompute
  12. 2026-09-05 19:19 UTCVendor advisory
  13. 2026-09-05 19:19 UTCGHSA enrichment
  14. 2026-09-05 15:31 UTCEPSS rescore
  15. 2026-09-05 05:57 UTCEG score recompute
  16. 2026-09-05 05:57 UTCVendor advisory
  17. 2026-09-05 05:57 UTCGHSA enrichment
  18. 2026-09-04 12:38 UTCEG score recompute
  19. 2026-09-04 12:38 UTCVendor advisory
  20. 2026-09-04 12:38 UTCGHSA enrichment
  21. 2026-09-04 05:07 UTCEPSS rescore
  22. 2026-09-03 17:39 UTCEG score recompute
  23. 2026-09-03 17:39 UTCVendor advisory
  24. 2026-09-03 17:39 UTCGHSA enrichment
  25. 2026-09-02 14:12 UTCEPSS rescore
  26. 2026-09-01 23:09 UTCEG score recompute
  27. 2026-09-01 23:09 UTCVendor advisory
  28. 2026-09-01 23:09 UTCGHSA enrichment
  29. 2026-09-01 13:54 UTCEPSS rescore
  30. 2026-09-01 04:40 UTCEPSS rescore
  31. 2026-08-31 01:15 UTCEG score recompute
  32. 2026-08-31 01:15 UTCVendor advisory
  33. 2026-08-31 01:15 UTCGHSA enrichment
  34. 2026-08-30 19:17 UTCEPSS rescore
  35. 2026-08-30 12:44 UTCEG score recompute
  36. 2026-08-30 12:44 UTCVendor advisory
  37. 2026-08-30 12:44 UTCGHSA enrichment
  38. 2026-08-30 01:22 UTCEPSS rescore
  39. 2026-08-30 00:03 UTCEG score recompute
  40. 2026-08-30 00:03 UTCVendor advisory
  41. 2026-08-30 00:03 UTCGHSA enrichment
  42. 2026-08-28 21:42 UTCEPSS rescore
  43. 2026-08-27 22:27 UTCEG score recompute
  44. 2026-08-27 22:27 UTCVendor advisory
  45. 2026-08-27 22:27 UTCGHSA enrichment
  46. 2026-08-27 09:56 UTCVendor advisory
  47. 2026-08-27 09:56 UTCGHSA enrichment
  48. 2026-08-26 19:48 UTCEG score recompute
  49. 2026-08-26 19:48 UTCVendor advisory
  50. 2026-08-26 19:48 UTCGHSA enrichment
  51. 2026-08-26 14:47 UTCEPSS rescore
  52. 2026-08-26 06:51 UTCVendor advisory
  53. 2026-08-26 06:51 UTCGHSA enrichment
  54. 2026-08-25 17:42 UTCEG score recompute
  55. 2026-08-25 17:42 UTCVendor advisory
  56. 2026-08-25 17:42 UTCGHSA enrichment
  57. 2026-08-25 13:49 UTCEPSS rescore
  58. 2026-08-25 04:28 UTCVendor advisory
  59. 2026-08-25 04:28 UTCGHSA enrichment
  60. 2026-08-24 15:58 UTCEG score recompute
  61. 2026-08-24 15:58 UTCVendor advisory
  62. 2026-08-24 15:58 UTCGHSA enrichment
  63. 2026-08-24 03:27 UTCVendor advisory
  64. 2026-08-24 03:27 UTCGHSA enrichment
  65. 2026-08-23 14:23 UTCVendor advisory
  66. 2026-08-23 14:23 UTCGHSA enrichment
  67. 2026-08-23 01:52 UTCEG score recompute
  68. 2026-08-23 01:52 UTCVendor advisory
  69. 2026-08-23 01:52 UTCGHSA enrichment
  70. 2026-08-23 00:19 UTCEPSS rescore
  71. 2026-08-22 13:22 UTCVendor advisory
  72. 2026-08-22 13:22 UTCGHSA enrichment
  73. 2026-08-22 00:51 UTCEG score recompute
  74. 2026-08-22 00:51 UTCVendor advisory
  75. 2026-08-22 00:51 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2026-64443?
CVE-2026-64443 is a high vulnerability published on July 25, 2026. In the Linux kernel, the following vulnerability has been resolved: staging: rtl8723bs: fix OOB read in updatebeaconinfo() IE loop The IE parsing loop in updatebeaconinfo() advances by (pIE->length + 2) each iteration but only guards on i < len. When a malicious AP sends a Beacon whose last IE has…
When was CVE-2026-64443 disclosed?
CVE-2026-64443 was first published in the National Vulnerability Database on July 25, 2026, with the most recent update on September 3, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-64443 actively exploited?
CVE-2026-64443 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 79.6% of all scored CVEs.
What is the CVSS score of CVE-2026-64443?
CVE-2026-64443 has a CVSS v3 base score of 8.1 (NVD).
How do I remediate CVE-2026-64443?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-64443, 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.

Dependency Blast Radius

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