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ReviewHigh

CVE-2026-74647

Linux

In the Linux kernel, the following vulnerability has been resolved: misc: fastrpc: Remove buffer from list prior to unmap operation fastrpc_req_munmap_impl() is called to unmap any buffer. The buffer is getting removed from the list after it is unmapped from DSP. This can create potential race conditions if multiple threads invoke unmap concurrently, where one thread may remove the entry from the list while another thread's unmap operation is still ongoing. Fix this by removing the buffer entry from the list before calling the unmap operation. If the unmap fails, the entry is re-added to th...

CVSS
7.8
EPSS
-
- percentile
CISA KEV
Not listed
Published
2026.08.23
PRIORITY ASSESSMENT

Review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability-
Technical severityCVSS 7.8

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: misc: fastrpc: Remove buffer from list prior to unmap operation fastrpc_req_munmap_impl() is called to unmap any buffer. The buffer is getting removed from the list after it is unmapped from DSP. This can create potential race conditions if multiple threads invoke unmap concurrently, where one thread may remove the entry from the list while another thread's unmap operation is still ongoing. Fix this by removing the buffer entry from the list before calling the unmap operation. If the unmap fails, the entry is re-added to th...

Affected product and versions

Product
Linux
Affected versions
>= 2419e55e532de14fdf336e09e453aa2831c73a25 < 1edb654b2b41baee2ab5cf418baaf6e57dfbd802, >= 2419e55e532de14fdf336e09e453aa2831c73a25 < 4716c23c206a2f99ca54ebfdd8b5ba9dd0102240, >= 2419e55e532de14fdf336e09e453aa2831c73a25 < 99f8de36c84cb9b872157aa6c3578c2480cee4b8, >= 2419e55e532de14fdf336e09e453aa2831c73a25 < 97273624f7b356eaf8261609a75cfcb8738a165a, >= 2419e55e532de14fdf336e09e453aa2831c73a25 < fe70329055977fc1e8dc6291318d0dd75470795a, >= 2419e55e532de14fdf336e09e453aa2831c73a25 < 9bf22a7d950cec2d1efeca7f16bb20fcca84c36a, >= 2419e55e532de14fdf336e09e453aa2831c73a25 < 0beaa9bd7eb10d9b5e6352ed5161f3f3bbd4c3c5, >= 2419e55e532de14fdf336e09e453aa2831c73a25 < 6102ceb4eab845743ee57acd3863fbd06e93c927, >= 5.5
Fixed versions
No verified fixed-version field is available yet

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
Not available