In the Linux kernel, the following vulnerability has been resolved: bpf: Preserve pointer state for commuted arithmetic When scalar += …
CVE-2026-74720 · published 22 Aug 2026
How serious is it
- Severity: high, CVSS score 7.8 out of 10.
- No exploit prediction (EPSS) score yet.
- Not on the CISA list of exploited vulnerabilities.
- No public exploit in Exploit-DB.
Is your app affected by CVE-2026-74720?
Paste this prompt into Claude Code, Cursor or any AI coding tool: it runs a free Shippable scan of your project and fixes what it finds. Built with Lovable, Bolt or v0? Scan your live app. Or upload your package file.
Who is affected
- Linux Linux: 4.16
How to check
- Find out whether you run the affected product and which version, then compare it with the versions above.
How to fix
Copies a prompt for Claude Code, Cursor or Codex that asks it to check whether you run this product.
- Apply the vendor's update or mitigation from the references below. If there is none yet, limit exposure of the affected service until there is.
- If a vulnerable version was live, check your logs and rotate the secrets that server could read.
The advisory
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.
Check your whole app
Dependencies are only half of it. Free and read-only: before you push, run npx shippable-dev scan localhost:3000 in your project folder, no account needed. For your live app, you prove it's yours with a one-line tag first.
References
- git.kernel.org/stable/c/29c239f8dbec5ab33a61796724d189bddee6cd4b
- git.kernel.org/stable/c/8109c25e0c41f5f19a1c2380bb49c991a877494e
- git.kernel.org/stable/c/86b203aadc2930e0a4f9c6277b5b80ff3664c472
- git.kernel.org/stable/c/8cb23101a3fcc7432b451ea3d0f14a90711f4acf
- git.kernel.org/stable/c/a4c6f804b44c5c790269b25e0e61cf4e9f117c86
- git.kernel.org/stable/c/d1959028190a7649b926f5867a58de5fe221b23c
- git.kernel.org/stable/c/db6382ed3361bdd8129572a3423956cba1dae829
- git.kernel.org/stable/c/eaffa1495e4fe6330aeff9f323ea3d48b01f118a
Merged from NVD. Last updated 24 Oct 2026. All vulnerabilities · RSS · JSON