CVE-2026-46102 PUBLISHED

net: strparser: fix skb_head leak in strp_abort_strp()

Assigner: Linux
Reserved: 13.05.2026 Published: 27.05.2026 Updated: 27.05.2026

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

net: strparser: fix skb_head leak in strp_abort_strp()

When the stream parser is aborted, for example after a message assembly timeout, it can still hold a reference to a partially assembled message in strp->skb_head.

That skb is not released in strp_abort_strp(), which leaks the partially assembled message and can be triggered repeatedly to exhaust memory.

Fix this by freeing strp->skb_head and resetting the parser state in the abort path. Leave strp_stop() unchanged so final cleanup still happens in strp_done() after the work and timer have been synchronized.

Product Status

Vendor Linux
Product Linux
Versions Default: unaffected
  • affected from 43a0c6751a322847cb6fa0ab8cbf77a1d08bfc0a to e9ae00490d474757c0f9c65073de83e6bb1e5a00 (excl.)
  • affected from 43a0c6751a322847cb6fa0ab8cbf77a1d08bfc0a to 5327dad2ffe9c1b49881dd6d51ff3c6893847568 (excl.)
  • affected from 43a0c6751a322847cb6fa0ab8cbf77a1d08bfc0a to 19ca9475f18f991735f98a22e735c43e95e6298d (excl.)
  • affected from 43a0c6751a322847cb6fa0ab8cbf77a1d08bfc0a to 56082f442023db9be1a5a29d4ee361de4017c0b7 (excl.)
  • affected from 43a0c6751a322847cb6fa0ab8cbf77a1d08bfc0a to fe72340daaf1af588be88056faf98965f39e6032 (excl.)
Vendor Linux
Product Linux
Versions Default: affected
  • Version 4.9 is affected
  • unaffected from 0 to 4.9 (excl.)
  • unaffected from 6.6.140 to 6.6.* (incl.)
  • unaffected from 6.12.86 to 6.12.* (incl.)
  • unaffected from 6.18.27 to 6.18.* (incl.)
  • unaffected from 7.0.4 to 7.0.* (incl.)
  • unaffected from 7.1-rc1 to * (incl.)

References