CVE-2026-74720
What it is
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.
At a glance
- Exploitability
- Can be exploited locally on the machine with a low-privilege account. High risk of data exposure, data tampering, service disruption.
- Exploit odds
- 0.1% chance of exploitation in the next 30 days (EPSS).
- Fix
- No patch or advisory is linked yet. Look at mitigations or restrict exposure.
Timeline
- ReservedThe CVE id was reserved by its CNA
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 0.1% in the next 30 days (EPSS).
- Severity: 7.8 HIGH (CVSS).
- Fix: none linked yet, which raises it.
Details
- Published
- Last modified
- Exploit probability
- 0.1% · EPSS, next 30 days
- Record status
- Received
Attack profile CVSS 3.1 · 7.8
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Raw vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2026-74720.md and follow it. Check whether this project is affected by CVE-2026-74720. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
References
- 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