CVE-2026-43373 PUBLISHED

net: ncsi: fix skb leak in error paths

Assigner: Linux
Reserved: 01.05.2026 Published: 08.05.2026 Updated: 08.05.2026

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

net: ncsi: fix skb leak in error paths

Early return paths in NCSI RX and AEN handlers fail to release the received skb, resulting in a memory leak.

Specifically, ncsi_aen_handler() returns on invalid AEN packets without consuming the skb. Similarly, ncsi_rcv_rsp() exits early when failing to resolve the NCSI device, response handler, or request, leaving the skb unfreed.

Product Status

Vendor Linux
Product Linux
Versions Default: unaffected
  • affected from 138635cc27c9737f940c3aa80912ff7a61c825af to 9891d7f4f1ede473c54b49776ae07755083eef06 (excl.)
  • affected from 138635cc27c9737f940c3aa80912ff7a61c825af to fef5aa6e3bcf3c8053307642663a63b7362d7552 (excl.)
  • affected from 138635cc27c9737f940c3aa80912ff7a61c825af to 81d6aee32f8f7bbc175c05dbf61f4430bfb88c4a (excl.)
  • affected from 138635cc27c9737f940c3aa80912ff7a61c825af to 59962588197863d0d746879f193905c0c6b3df49 (excl.)
  • affected from 138635cc27c9737f940c3aa80912ff7a61c825af to 553366c271479c0d571dd1bb5d1bcde4747fb82e (excl.)
  • affected from 138635cc27c9737f940c3aa80912ff7a61c825af to b70c4e5e711931cdd56e6e905737b72f1e649189 (excl.)
  • affected from 138635cc27c9737f940c3aa80912ff7a61c825af to 87138dde2d6937b12b967f28fe598a7d59000ae4 (excl.)
  • affected from 138635cc27c9737f940c3aa80912ff7a61c825af to 5c3398a54266541610c8d0a7082e654e9ff3e259 (excl.)
Vendor Linux
Product Linux
Versions Default: affected
  • Version 4.8 is affected
  • unaffected from 0 to 4.8 (excl.)
  • unaffected from 5.10.253 to 5.10.* (incl.)
  • unaffected from 5.15.203 to 5.15.* (incl.)
  • unaffected from 6.1.167 to 6.1.* (incl.)
  • unaffected from 6.6.130 to 6.6.* (incl.)
  • unaffected from 6.12.78 to 6.12.* (incl.)
  • unaffected from 6.18.19 to 6.18.* (incl.)
  • unaffected from 6.19.9 to 6.19.* (incl.)
  • unaffected from 7.0 to * (incl.)

References