CVE-2026-64536

HIGHPre-NVD 8.18.1—
EchelonGraph scoreMEDIUM confidence

Score 8.1 from GitHub Security Advisory (severity: HIGH) published 2026-07-27. 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 reads in is_ap_in_tkip() IE loop

The loop in is_ap_in_tkip() iterates over IEs without verifying that enough bytes remain before dereferencing the IE header or its payload:

  • pIE->element_id and pIE->length are read without checking that
i + sizeof(*pIE) <= ie_length, so a truncated IE at the end of the buffer causes an OOB read.
  • For WLAN_EID_VENDOR_SPECIFIC the code compares pIE->data + 12,
which requires pIE->length >= 16. For WLAN_EID_RSN it compares pIE->data + 8, requiring pIE->length >= 12. Neither requirement is checked.

Add the missing IE header and payload bounds checks and guard each data access with an explicit pIE->length minimum, matching the pattern established in update_beacon_info().

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
17%
KEV
Not listed

Published

July 27, 2026

Last Modified

August 17, 2026

Advisory Details (7)

Auto-updated Jul 30, 2026
No patch confirmed yet.
generic

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

https://git.kernel.org/stable/c/ea3809f7e20bdff282b8cc1e94937d5fb9fb32c7
generic

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

https://git.kernel.org/stable/c/d2055332297e24c63fffda943ef7a5eefc0a6019
generic

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

https://git.kernel.org/stable/c/a6105ea8ca6ebbc04beaf3bcbf7dbb5985f5d395
generic

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

https://git.kernel.org/stable/c/6f26cc55affd9d7f88ae2f5d12db4ecf9072c209
generic

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

https://git.kernel.org/stable/c/4380b3860d887a13555ff024a58dfc05b490dfd6
generic

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

https://git.kernel.org/stable/c/3bf39f711ff27c64be8680a8938bcc5001982e81
generic

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

https://git.kernel.org/stable/c/204b22c8df115370037248859bf0fa62db73a396

Vendor Advisories for CVE-2026-64536(1)

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

Patch Availability(5)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-tools-gcp-edge (7.0.0-1011.11~24.04.1) @ noble2026-09-20ubuntu
ubuntulinux-tools-raspi-realtime-7.0 (7.0.0-1019.19) @ resolute2026-09-20ubuntu
ubuntulinux-virtual-hwe-26.04-edge (7.0.0-31.31) @ resolute2026-09-20ubuntu
ubuntulinux-tools-oem-7.0 (7.0.0-1013.13) @ resolute2026-09-20ubuntu
ubuntulinux-tools-nvidia-hwe-24.04-edge (7.0.0-1018.18~24.04.1) @ noble2026-09-20ubuntu

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—

All Vendor Advisories

(6)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 29× in last 7d / 123× 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 249 total refreshes for this CVE.

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

Related CVEs(same vendor)

Frequently asked(5)

What is CVE-2026-64536?
CVE-2026-64536 is a high vulnerability published on July 27, 2026. In the Linux kernel, the following vulnerability has been resolved: staging: rtl8723bs: fix OOB reads in isapin_tkip() IE loop The loop in isapin_tkip() iterates over IEs without verifying that enough bytes remain before dereferencing the IE header or its payload: pIE->element_id and pIE->length…
When was CVE-2026-64536 disclosed?
CVE-2026-64536 was first published in the National Vulnerability Database on July 27, 2026, with the most recent update on August 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-64536 actively exploited?
CVE-2026-64536 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 83.4% of all scored CVEs.
What is the CVSS score of CVE-2026-64536?
CVE-2026-64536 has a CVSS v3 base score of 8.1 (NVD).
How do I remediate CVE-2026-64536?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-64536, 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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