Medium severity6.5NVD Advisory· Published Mar 13, 2026· Updated Jun 17, 2026
CVE-2026-31884
CVE-2026-31884
Description
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.24.0, division by zero in MS-ADPCM and IMA-ADPCM decoders when nBlockAlign is 0, leading to a crash. In libfreerdp/codec/dsp.c, both ADPCM decoders use size % block_size where block_size = context->common.format.nBlockAlign. The nBlockAlign value comes from the Server Audio Formats PDU on the RDPSND channel. The value 0 is not validated anywhere before reaching the decoder. When nBlockAlign = 0, the modulo operation causes a SIGFPE (floating point exception) crash. This vulnerability is fixed in 3.24.0.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
10- osv-coords7 versionspkg:rpm/almalinux/freerdppkg:rpm/almalinux/freerdp-develpkg:rpm/almalinux/freerdp-libspkg:rpm/almalinux/freerdp-serverpkg:rpm/almalinux/libwinprpkg:rpm/almalinux/libwinpr-develpkg:rpm/opensuse/freerdp&distro=openSUSE%20Tumbleweed
< 2:3.10.3-5.el10_1.8+ 6 more
- (no CPE)range: < 2:3.10.3-5.el10_1.8
- (no CPE)range: < 2:3.10.3-5.el10_1.8
- (no CPE)range: < 2:3.10.3-5.el10_1.8
- (no CPE)range: < 2:3.10.3-5.el10_1.8
- (no CPE)range: < 2:3.10.3-5.el10_1.8
- (no CPE)range: < 2:3.10.3-5.el10_1.8
- (no CPE)range: < 3.24.1-1.1
Patches
Vulnerability mechanics
References
3News mentions
0No linked articles in our index yet.