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CVE-2026-99232

tracing/syscalls: Use copy_from_user for the faultable syscall buffer

Description

In the Linux kernel, the following vulnerability has been resolved: tracing/syscalls: Use copy_from_user for the faultable syscall buffer syscall_copy_user_array() copies the buffer argument of faultable syscalls (write, pwrite64, ...) with __copy_from_user(), which skips access_ok(). Use copy_from_user() instead so a non-user address is rejected and the entry is recorded as faulted. It could be a security concern for machines that trust perf a bit too much.

Timeline

  1. ID reserved

    By Linux

  2. · 38 days later

    Published

  3. · 1 day later

    Record updated

Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.

Scores

No CVSS score yet: neither the CNA, CISA nor NVD has scored this CVE. NVD status: Received.

EPSS (exploitation in 30 days)
0.15% · top 95% of all CVEs (11 Nov 2026)
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The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.

Affected products

  • Linux · Linux

    • affected baa031b7bd2ce7502339174a42974321859ecd6a – < e33e2718c62a602001ab549642a1aed0be797105
    • affected baa031b7bd2ce7502339174a42974321859ecd6a – < 041d1a568a11a7ed7415ef1408d0c65041c1ad69
    • affected baa031b7bd2ce7502339174a42974321859ecd6a – < 097fd0050089df17b032f2b852b9b65e548e342a

  • Linux · Linux

    • affected 6.19
    • unaffected < 6.19
    • unaffected 7.2.14 – ≤ 7.2.*
    • unaffected 7.3.1 – ≤ 7.3.*
    • unaffected 7.4-rc1 – ≤ *

References

References3

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .