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CVE-2026-74720

bpf: Preserve pointer state for commuted arithmetic

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 5.10.265, 5.15.216, 6.1.183, 6.6.152, 6.12.104, and 2 more
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: no
  • Technical impact: total

Summary

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.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: no · Technical impact: total

  3. Record last updated

Affected versions

  • Linux Linux

    From f4d7e40a5b7157e1329c3c5b10f60d8289fc2941 · fixed in 86b203aadc2930e0a4f9c6277b5b80ff3664c472; From f4d7e40a5b7157e1329c3c5b10f60d8289fc2941 · fixed in 8109c25e0c41f5f19a1c2380bb49c991a877494e; From f4d7e40a5b7157e1329c3c5b10f60d8289fc2941 · fixed in d1959028190a7649b926f5867a58de5fe221b23c; From f4d7e40a5b7157e1329c3c5b10f60d8289fc2941 · fixed in 8cb23101a3fcc7432b451ea3d0f14a90711f4acf; From f4d7e40a5b7157e1329c3c5b10f60d8289fc2941 · fixed in 29c239f8dbec5ab33a61796724d189bddee6cd4b; From f4d7e40a5b7157e1329c3c5b10f60d8289fc2941 · fixed in db6382ed3361bdd8129572a3423956cba1dae829; From f4d7e40a5b7157e1329c3c5b10f60d8289fc2941 · fixed in eaffa1495e4fe6330aeff9f323ea3d48b01f118a; From f4d7e40a5b7157e1329c3c5b10f60d8289fc2941 · fixed in a4c6f804b44c5c790269b25e0e61cf4e9f117c86

  • Linux Linux

    4.16

  • KernelLinux

    From 4.16.0 · fixed in 5.10.265; From 5.11.0 · fixed in 5.15.216; From 5.16.0 · fixed in 6.1.183; From 6.2.0 · fixed in 6.6.152; From 6.7.0 · fixed in 6.12.104; From 6.13.0 · fixed in 6.18.45; From 6.19.0 · fixed in 7.1.9

References 8

git.kernel.org