Branch: refs/heads/3.6
Home: https://github.com/OpenSIPS/opensips
Commit: 85207da3bbf4f1abe25f045786908ea4de20dd63
https://github.com/OpenSIPS/opensips/commit/85207da3bbf4f1abe25f045786908ea4de20dd63
Author: Liviu Chircu <[email protected]>
Date: 2026-06-17 (Wed, 17 Jun 2026)
Changed paths:
M modules/cfgutils/shvar.c
M pvar.c
M pvar.h
M re.c
Log Message:
-----------
cfgutils: Fix SHM leak with re.subst and $shv() variables
The re.subst transformation stores replacement-side PV specs by value inside
its cached subst_expr. When the cached expression is replaced, the embedded
$shv() spec could leave behind its shared-memory pvv buffer.
This can be triggered with a dynamic substitution expression such as:
$var(re) = "/^s=before/s=$shv(voip_sdp_session)\r/g";
$var(sdp) = $(var(sdp){re.subst,$var(re)});
Track pvv ownership, mark $shv() buffers as SHM-owned, and release them when
freeing cached re.subst replacement specs.
Fixes #3872
(cherry picked from commit 09ec06179c8c40d034e8eb27fe814f15418f58b6)
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