CVE-2026-74720

In the Linux kernel, the following vulnerability has been resolved: bpf: Preserve pointer state for commuted arithmetic When scalar += pointer is handled in adjust_ptr_min_max_vals(), the destination register inherits the pointer state from the source pointer. Copying only selected fields is fragile because pointer provenance is tracked by several bpf_reg_state fields. Use the caller's temporary offset register to preserve the scalar operand while replacing the destination with the full pointer state. This preserves the frame number for PTR_TO_STACK registers and keeps parent identity fields consistent.

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/29c239f8dbec5ab33a61796724d189bddee6cd4b
https://git.kernel.org/stable/c/8109c25e0c41f5f19a1c2380bb49c991a877494e
https://git.kernel.org/stable/c/86b203aadc2930e0a4f9c6277b5b80ff3664c472
https://git.kernel.org/stable/c/8cb23101a3fcc7432b451ea3d0f14a90711f4acf
https://git.kernel.org/stable/c/a4c6f804b44c5c790269b25e0e61cf4e9f117c86
https://git.kernel.org/stable/c/d1959028190a7649b926f5867a58de5fe221b23c
https://git.kernel.org/stable/c/db6382ed3361bdd8129572a3423956cba1dae829
https://git.kernel.org/stable/c/eaffa1495e4fe6330aeff9f323ea3d48b01f118a

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-22 16:16

Updated : 2026-08-25 06:18

NVD link : CVE-2026-74720

Mitre link : CVE-2026-74720

CVE.ORG link : CVE-2026-74720

JSON object : View

Products Affected

No product.

CWE

No CWE.

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This preserves\nthe frame number for PTR_TO_STACK registers and keeps parent identity\nfields consistent."}], "lastModified": "2026-08-25T06:18:57.637", "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}