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CVE-2026-90306ARM: 9481/2: breakpoint: CFI breakpoints only on demand

Description

In the Linux kernel, the following vulnerability has been resolved: ARM: 9481/2: breakpoint: CFI breakpoints only on demand This removes the stub hw_breakpoint_cfi_handler() from ARM, making it not steal breakpoint type 0x03 (ARM_ENTRY_CFI_BREAKPOINT) unless CFI is actively used in the kernel. When not instrumenting with CFI, or when a breakpoint is issued in userspace, we fall through to return 1 from hw_breakpoint_pending() "unhandled fault" so userspace can make use of this breakpoint. Tested with LKDTM and this command line: echo CFI_FORWARD_PROTO > /sys/kernel/debug/provoke-crash/DIRECT still works as expected.

Timeline

  1. ID reserved

    By Linux

  2. · 6 days later

    Published

  3. · 32 days 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)
0.21% · top 89% of all CVEs (15 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 c3f89986fde7bb9ccc86a901bf28e1f7d69fc3b3 – < 314f1a6762b5d51b37784ed7dc701d4c3d893703
    • affected c3f89986fde7bb9ccc86a901bf28e1f7d69fc3b3 – < da64b150e4b7bee615b33ab21f3137c31ec36922
    • affected c3f89986fde7bb9ccc86a901bf28e1f7d69fc3b3 – < 8ed9bff906cf8036531d1559f10e82733a52b41f

  • Linux · Linux

    • affected 6.10
    • unaffected < 6.10
    • unaffected 6.18.52 – ≤ 6.18.*
    • unaffected 7.2.6 – ≤ 7.2.*
    • unaffected 7.3 – ≤ *

References

References3

Sources

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

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Record last updated .