CVE-2023-33094

Local memory corruption via deferred fence cleanup

Published Jan 2, 2024 · Updated Apr 17, 2025

Use-after-free in Qualcomm Snapdragon graphics kernels allows local users to corrupt memory through Vulkan synchronization. The drawobj_sync_timeline_fence_callback function queues cleanup through an irq_work object embedded in a sync event whose storage can expire before deferred execution. Triggering requires local access to Vulkan synchronization paths with KASAN enabled; the stale callback state can compromise kernel memory confidentiality, integrity, and availability.

CVSS severity8.4
High
EPSS probability0.12%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Use-after-free in Qualcomm Snapdragon graphics kernels allows local users to corrupt memory through Vulkan synchronization. The drawobj_sync_timeline_fence_callback function queues cleanup through an irq_work object embedded in a sync event whose storage can expire before deferred execution. Triggering requires local access to Vulkan synchronization paths with KASAN enabled; the stale callback state can compromise kernel memory confidentiality, integrity, and availability.

The record

CVE
CVE-2023-33094
Published
Jan 2, 2024
Updated
Apr 17, 2025
Vendor
Qualcomm
Product
Snapdragon
Classifications
CWE-416
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 2, 2024CVE publishedPublication date reported by the CVE source.
  2. Apr 17, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=AR8035
  2. Affected versionversion=CSRA6620
  3. Affected versionversion=CSRA6640
  4. Affected versionversion=FastConnect 6200
  5. Affected versionversion=FastConnect 6700
  6. Affected versionversion=FastConnect 6800
  7. Affected versionversion=FastConnect 6900
  8. Affected versionversion=FastConnect 7800
  9. Affected versionversion=Flight RB5 5G Platform
  10. Affected versionversion=QAM8255P
  11. Affected versionversion=QAM8295P
  12. Affected versionversion=QAM8650P
  13. Affected versionversion=QAM8775P
  14. Affected versionversion=QCA6391
  15. Affected versionversion=QCA6426
  16. Affected versionversion=QCA6436
  17. Affected versionversion=QCA6574
  18. Affected versionversion=QCA6574A
  19. Affected versionversion=QCA6574AU
  20. Affected versionversion=QCA6595
  21. Affected versionversion=QCA6595AU
  22. Affected versionversion=QCA6696
  23. Affected versionversion=QCA6698AQ
  24. Affected versionversion=QCA6797AQ
  25. Affected versionversion=QCA8081
  26. Affected versionversion=QCA8337
  27. Affected versionversion=QCM4325
  28. Affected versionversion=QCM6490
  29. Affected versionversion=QCM8550
  30. Affected versionversion=QCN6024
  31. Affected versionversion=QCN9011
  32. Affected versionversion=QCN9012
  33. Affected versionversion=QCN9024
  34. Affected versionversion=QCS410
  35. Affected versionversion=QCS610
  36. Affected versionversion=QCS6490
  37. Affected versionversion=QCS7230
  38. Affected versionversion=QCS8250
  39. Affected versionversion=QCS8550
  40. Affected versionversion=QRB5165M
  41. Affected versionversion=QRB5165N
  42. Affected versionversion=Qualcomm 215 Mobile Platform
  43. Affected versionversion=Qualcomm Video Collaboration VC1 Platform
  44. Affected versionversion=Qualcomm Video Collaboration VC3 Platform
  45. Affected versionversion=Qualcomm Video Collaboration VC5 Platform
  46. Affected versionversion=Robotics RB5 Platform
  47. Affected versionversion=SA4150P
  48. Affected versionversion=SA4155P
  49. Affected versionversion=SA6145P
  50. Affected versionversion=SA6150P
  51. Affected versionversion=SA6155P
  52. Affected versionversion=SA8145P
  53. Affected versionversion=SA8150P
  54. Affected versionversion=SA8155P
  55. Affected versionversion=SA8195P
  56. Affected versionversion=SA8255P
  57. Affected versionversion=SA8295P
  58. Affected versionversion=SD660
  59. Affected versionversion=SD865 5G
  60. Affected versionversion=SD888
  61. Affected versionversion=SG4150P
  62. Affected versionversion=SG8275P
  63. Affected versionversion=SM7250P
  64. Affected versionversion=SM7315
  65. Affected versionversion=SM7325P
  66. Affected versionversion=SM8550P
  67. Affected versionversion=Smart Audio 400 Platform
  68. Affected versionversion=Snapdragon 480 5G Mobile Platform
  69. Affected versionversion=Snapdragon 480+ 5G Mobile Platform (SM4350-AC)
  70. Affected versionversion=Snapdragon 4 Gen 1 Mobile Platform
  71. Affected versionversion=Snapdragon 660 Mobile Platform
  72. Affected versionversion=Snapdragon 680 4G Mobile Platform
  73. Affected versionversion=Snapdragon 685 4G Mobile Platform (SM6225-AD)
  74. Affected versionversion=Snapdragon 690 5G Mobile Platform
  75. Affected versionversion=Snapdragon 695 5G Mobile Platform
  76. Affected versionversion=Snapdragon 750G 5G Mobile Platform
  77. Affected versionversion=Snapdragon 765 5G Mobile Platform (SM7250-AA)
  78. Affected versionversion=Snapdragon 765G 5G Mobile Platform (SM7250-AB)
  79. Affected versionversion=Snapdragon 768G 5G Mobile Platform (SM7250-AC)
  80. Affected versionversion=Snapdragon 778G 5G Mobile Platform
  81. Affected versionversion=Snapdragon 778G+ 5G Mobile Platform (SM7325-AE)
  82. Affected versionversion=Snapdragon 780G 5G Mobile Platform
  83. Affected versionversion=Snapdragon 782G Mobile Platform (SM7325-AF)
  84. Affected versionversion=Snapdragon 7c+ Gen 3 Compute
  85. Affected versionversion=Snapdragon 865 5G Mobile Platform
  86. Affected versionversion=Snapdragon 865+ 5G Mobile Platform (SM8250-AB)
  87. Affected versionversion=Snapdragon 870 5G Mobile Platform (SM8250-AC)
  88. Affected versionversion=Snapdragon 888 5G Mobile Platform
  89. Affected versionversion=Snapdragon 888+ 5G Mobile Platform (SM8350-AC)
  90. Affected versionversion=Snapdragon 8 Gen 1 Mobile Platform
  91. Affected versionversion=Snapdragon 8 Gen 2 Mobile Platform
  92. Affected versionversion=Snapdragon 8+ Gen 2 Mobile Platform
  93. Affected versionversion=Snapdragon Auto 5G Modem-RF
  94. Affected versionversion=Snapdragon W5+ Gen 1 Wearable Platform
  95. Affected versionversion=Snapdragon X55 5G Modem-RF System
  96. Affected versionversion=Snapdragon X65 5G Modem-RF System
  97. Affected versionversion=Snapdragon XR2 5G Platform
  98. Affected versionversion=Snapdragon XR2+ Gen 1 Platform
  99. Affected versionversion=SW5100
  100. Affected versionversion=SW5100P
  101. Affected versionversion=SXR2130
  102. Affected versionversion=WCD9326
  103. Affected versionversion=WCD9335
  104. Affected versionversion=WCD9341
  105. Affected versionversion=WCD9370
  106. Affected versionversion=WCD9375
  107. Affected versionversion=WCD9380
  108. Affected versionversion=WCD9385
  109. Affected versionversion=WCD9390
  110. Affected versionversion=WCD9395
  111. Affected versionversion=WCN3615
  112. Affected versionversion=WCN3660B
  113. Affected versionversion=WCN3680B
  114. Affected versionversion=WCN3950
  115. Affected versionversion=WCN3980
  116. Affected versionversion=WCN3988
  117. Affected versionversion=WCN3990
  118. Affected versionversion=WCN6740
  119. Affected versionversion=WSA8810
  120. Affected versionversion=WSA8815
  121. Affected versionversion=WSA8830
  122. Affected versionversion=WSA8835
  123. Affected versionversion=WSA8840
  124. Affected versionversion=WSA8845
  125. Affected versionversion=WSA8845H

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Qualcomm · Snapdragonversion=AR8035; version=CSRA6620; version=CSRA6640; version=FastConnect 6200; version=FastConnect 6700; version=FastConnect 6800; version=FastConnect 6900; version=FastConnect 7800; version=Flight RB5 5G Platform; version=QAM8255P; version=QAM8295P; version=QAM8650P; version=QAM8775P; version=QCA6391; version=QCA6426; version=QCA6436; version=QCA6574; version=QCA6574A; version=QCA6574AU; version=QCA6595; version=QCA6595AU; version=QCA6696; version=QCA6698AQ; version=QCA6797AQ; version=QCA8081; version=QCA8337; version=QCM4325; version=QCM6490; version=QCM8550; version=QCN6024; version=QCN9011; version=QCN9012; version=QCN9024; version=QCS410; version=QCS610; version=QCS6490; version=QCS7230; version=QCS8250; version=QCS8550; version=QRB5165M; version=QRB5165N; version=Qualcomm 215 Mobile Platform; version=Qualcomm Video Collaboration VC1 Platform; version=Qualcomm Video Collaboration VC3 Platform; version=Qualcomm Video Collaboration VC5 Platform; version=Robotics RB5 Platform; version=SA4150P; version=SA4155P; version=SA6145P; version=SA6150P; version=SA6155P; version=SA8145P; version=SA8150P; version=SA8155P; version=SA8195P; version=SA8255P; version=SA8295P; version=SD660; version=SD865 5G; version=SD888; version=SG4150P; version=SG8275P; version=SM7250P; version=SM7315; version=SM7325P; version=SM8550P; version=Smart Audio 400 Platform; version=Snapdragon 480 5G Mobile Platform; version=Snapdragon 480+ 5G Mobile Platform (SM4350-AC); version=Snapdragon 4 Gen 1 Mobile Platform; version=Snapdragon 660 Mobile Platform; version=Snapdragon 680 4G Mobile Platform; version=Snapdragon 685 4G Mobile Platform (SM6225-AD); version=Snapdragon 690 5G Mobile Platform; version=Snapdragon 695 5G Mobile Platform; version=Snapdragon 750G 5G Mobile Platform; version=Snapdragon 765 5G Mobile Platform (SM7250-AA); version=Snapdragon 765G 5G Mobile Platform (SM7250-AB); version=Snapdragon 768G 5G Mobile Platform (SM7250-AC); version=Snapdragon 778G 5G Mobile Platform; version=Snapdragon 778G+ 5G Mobile Platform (SM7325-AE); version=Snapdragon 780G 5G Mobile Platform; version=Snapdragon 782G Mobile Platform (SM7325-AF); version=Snapdragon 7c+ Gen 3 Compute; version=Snapdragon 865 5G Mobile Platform; version=Snapdragon 865+ 5G Mobile Platform (SM8250-AB); version=Snapdragon 870 5G Mobile Platform (SM8250-AC); version=Snapdragon 888 5G Mobile Platform; version=Snapdragon 888+ 5G Mobile Platform (SM8350-AC); version=Snapdragon 8 Gen 1 Mobile Platform; version=Snapdragon 8 Gen 2 Mobile Platform; version=Snapdragon 8+ Gen 2 Mobile Platform; version=Snapdragon Auto 5G Modem-RF; version=Snapdragon W5+ Gen 1 Wearable Platform; version=Snapdragon X55 5G Modem-RF System; version=Snapdragon X65 5G Modem-RF System; version=Snapdragon XR2 5G Platform; version=Snapdragon XR2+ Gen 1 Platform; version=SW5100; version=SW5100P; version=SXR2130; version=WCD9326; version=WCD9335; version=WCD9341; version=WCD9370; version=WCD9375; version=WCD9380; version=WCD9385; version=WCD9390; version=WCD9395; version=WCN3615; version=WCN3660B; version=WCN3680B; version=WCN3950; version=WCN3980; version=WCN3988; version=WCN3990; version=WCN6740; version=WSA8810; version=WSA8815; version=WSA8830; version=WSA8835; version=WSA8840; version=WSA8845; version=WSA8845H

Published CVSS scores

7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.4Qualcomm, Inc.CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-416Use After Free

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo