CVE-2026-43030 PUBLISHED

bpf: Fix regsafe() for pointers to packet

Assigner: Linux
Reserved: 01.05.2026 Published: 01.05.2026 Updated: 01.05.2026

In the Linux kernel, the following vulnerability has been resolved:

bpf: Fix regsafe() for pointers to packet

In case rold->reg->range == BEYOND_PKT_END && rcur->reg->range == N regsafe() may return true which may lead to current state with valid packet range not being explored. Fix the bug.

Product Status

Vendor Linux
Product Linux
Versions Default: unaffected
  • affected from 95b6ec733752b31bfd166c4609d2c1b5cdde9b47 to b52f6d0ef7b308f9d05bbddb78749852f28e8e40 (excl.)
  • affected from 6d94e741a8ff818e5518da8257f5ca0aaed1f269 to 37db6b9726d0bcf91cbdf9d63b558c50da49f968 (excl.)
  • affected from 6d94e741a8ff818e5518da8257f5ca0aaed1f269 to 015a74476dc1ab6923d89f1ee009aaf43faa7185 (excl.)
  • affected from 6d94e741a8ff818e5518da8257f5ca0aaed1f269 to b99d82706bd1511bb875e3de7154698fd9215c99 (excl.)
  • affected from 6d94e741a8ff818e5518da8257f5ca0aaed1f269 to 7241da033fdc507b920e092dab1f97b945cb0370 (excl.)
  • affected from 6d94e741a8ff818e5518da8257f5ca0aaed1f269 to 8aebe18069394f4a79d2d82080a0f806da449996 (excl.)
  • affected from 6d94e741a8ff818e5518da8257f5ca0aaed1f269 to ca995b1462ec6db1e869100ba1fb7356bd3f22f0 (excl.)
  • affected from 6d94e741a8ff818e5518da8257f5ca0aaed1f269 to a8502a79e832b861e99218cbd2d8f4312d62e225 (excl.)
Vendor Linux
Product Linux
Versions Default: affected
  • Version 5.11 is affected
  • unaffected from 0 to 5.11 (excl.)
  • unaffected from 5.10.253 to 5.10.* (incl.)
  • unaffected from 5.15.203 to 5.15.* (incl.)
  • unaffected from 6.1.168 to 6.1.* (incl.)
  • unaffected from 6.6.134 to 6.6.* (incl.)
  • unaffected from 6.12.81 to 6.12.* (incl.)
  • unaffected from 6.18.22 to 6.18.* (incl.)
  • unaffected from 6.19.12 to 6.19.* (incl.)
  • unaffected from 7.0 to * (incl.)

References