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ipsec esp: avoid dereferencing freed secasindex
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Authored by kib on Feb 25 2024, 10:37 AM.

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rG1a56620b7958: ipsec esp: avoid dereferencing freed secasindex

Summary

It is possible that SA was removed while processing packed, in which
case it changed to the DEAD state and it index removed from the tree.
Dereferencing sav->sah then touches freed memory.

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rG FreeBSD src repository

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kib created this revision.Feb 25 2024, 10:37 AM

Herald added subscribers: glebius, melifaro, imp. · View Herald TranscriptFeb 25 2024, 10:37 AM

kib requested review of this revision.Feb 25 2024, 10:37 AM

Probably we should increase esps_notdb or esps_invalid counter here.

This revision is now accepted and ready to land.Feb 26 2024, 7:40 AM

Update counter, add debug printf for the situation.

This revision now requires review to proceed.Feb 26 2024, 10:04 AM

ae accepted this revision.Feb 26 2024, 2:17 PM

This revision is now accepted and ready to land.Feb 26 2024, 2:17 PM

Closed by commit rG1a56620b7958: ipsec esp: avoid dereferencing freed secasindex (authored by kib). · Explain WhyFeb 26 2024, 2:28 PM

This revision was automatically updated to reflect the committed changes.

kib added a commit: rG1a56620b7958: ipsec esp: avoid dereferencing freed secasindex.

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sys/

netipsec/

xform_esp.c

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ipsec esp: avoid dereferencing freed secasindexClosedPublicActions