Bug 2528763 (CVE-2026-57164) - CVE-2026-57164 pjsip: heap overflow in the HTTP client
Summary: CVE-2026-57164 pjsip: heap overflow in the HTTP client
Keywords:
Status: NEW
Alias: CVE-2026-57164
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: 2531094 2531095 2531096 2531097
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-09-04 17:26 UTC by OSIDB Bzimport
Modified: 2026-09-09 17:28 UTC (History)
0 users

Fixed In Version:
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Description OSIDB Bzimport 2026-09-04 17:26:38 UTC
PJSIP is a free and open source multimedia communication library written in C. Prior to commit 8d5956a, a heap buffer overflow exists in the PJLIB-UTIL HTTP client (http_client.c) when buffering an HTTP response body. This affects applications that use the PJLIB-UTIL HTTP client to receive a whole response body at once (a completion callback with no incremental on_data_read callback). When growing the response buffer, an incorrect size calculation based on the server-supplied Content-Length can leave the buffer too small, causing response data to be written past the end of the allocation. A malicious or man-in-the-middle HTTP server can trigger this with a crafted response; impact may range from unexpected application termination to memory corruption. Applications that consume the response incrementally (via on_data_read), or that only connect to trusted servers, are not affected. This issue has been patched via commit 8d5956a.


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