CVE intelligence and bounded remediation

CVE-2023-28577 — In the function call related to CAM_REQ_MGR_RELEASE_BUF there is no check if the buffer is being used

High CVSS 7.8

In the function call related to CAM_REQ_MGR_RELEASE_BUF there is no check if the buffer is being used. So when a function called cam_mem_get_cpu_buf to get the kernel va to use, another thread can call CAM_REQ_MGR_RELEASE_BUF to unmap the kernel va which cause UAF of the kernel address.

Severity
High
CVSS
7.8 (3.1)
Published
2023-08-08
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-416

Affected products

  • qualcomm / fastconnect_6800_firmware
  • qualcomm / fastconnect_6900_firmware
  • qualcomm / fastconnect_7800_firmware
  • qualcomm / qca6391_firmware
  • qualcomm / qca6426_firmware
  • qualcomm / qca6436_firmware

Showing 6 representative product identities from 31 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

Matched remediation archetype

Use-after-free, double free, and expired resource use

This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.

Check exposure

  • Trace ownership, references, callbacks, asynchronous tasks, and teardown paths around the affected object or resource.
  • Identify reachable inputs and timing or state transitions that can release the object while references remain.
  • Confirm affected builds, allocators, feature flags, architectures, and process privileges.

Remediate safely

  • Apply the maintained ownership or lifetime fix and rebuild all artifacts containing the affected native code.
  • Use explicit ownership, safe reference management, cancellation and join semantics, and idempotent teardown.
  • Add deterministic lifetime tests plus isolated sanitizer and concurrency coverage for shutdown and error paths.

Authoritative sources

Complete CVE record and remediation plan

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