Bug 2528774 (CVE-2026-57159) - CVE-2026-57159 pjsip: SDP parser out-of-bounds write in remote payload-type map maintenance
Summary: CVE-2026-57159 pjsip: SDP parser out-of-bounds write in remote payload-type m...
Keywords:
Status: NEW
Alias: CVE-2026-57159
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2531074 2531075 2531076 2531077
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-09-04 17:31 UTC by OSIDB Bzimport
Modified: 2026-09-09 17:25 UTC (History)
0 users

Fixed In Version:
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Description OSIDB Bzimport 2026-09-04 17:31:10 UTC
PJSIP is a free and open source multimedia communication library written in C. Prior to commit 673b978, a remote out-of-bounds read and write can occur in the SDP negotiator when the remote payload-type map maintenance feature is enabled. assign_pt_and_update_map() in pjmedia/src/pjmedia/sdp_neg.c uses payload-type numbers taken from a remote SDP offer or answer to index fixed-size internal tables without sufficient bounds validation, so a crafted remote SDP can cause memory access outside those tables. The practical impact is memory corruption and denial of service; code execution is not demonstrated. This path is only reached when PJMEDIA_SDP_NEG_MAINTAIN_REMOTE_PT_MAP is enabled. The default is disabled, so default builds are not affected; the feature is an interoperability option that integrating products may enable. This issue has been patched via commit 673b978.


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