Detections
Analytics
CVE-2026-37555
high
Description
An issue was discovered in libsndfile 1.2.2 IMA ADPCM codec. The AIFF code path (line 241) was fixed with (sf_count_t) cast, but the WAV code path (line 235) and close path (line 167) were not. When samplesperblock (int) * blocks (int) exceeds INT_MAX, the 32-bit multiplication overflows before being assigned to sf.frames (sf_count_t/int64). With samplesperblock=50000 and blocks=50000, the product 2500000000 overflows to -1794967296. This causes incorrect frame count leading to heap buffer overflow or denial of service. Both values come from the WAV file header and are attacker-controlled. This issue was discovered after an incomplete fix for CVE-2022-33065.
References
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-37555.json
https://github.com/libsndfile/libsndfile/issues/833
https://github.com/libsndfile/libsndfile/commit/9a829113c88a51e57c1e46473e90609e4b7df151
https://gist.github.com/sgInnora/a5f5c19e4bf6f4fb74fab7b0ef2bfcc1
https://bugzilla.redhat.com/show_bug.cgi?id=2463856
https://access.redhat.com/security/cve/CVE-2026-37555
https://access.redhat.com/errata/RHSA-2026:30089
https://access.redhat.com/errata/RHSA-2026:30088
https://access.redhat.com/errata/RHSA-2026:30087
https://access.redhat.com/errata/RHSA-2026:30078
https://access.redhat.com/errata/RHSA-2026:25227
https://access.redhat.com/errata/RHSA-2026:25198
https://access.redhat.com/errata/RHSA-2026:25197
https://access.redhat.com/errata/RHSA-2026:25092
https://access.redhat.com/errata/RHSA-2026:23223
https://access.redhat.com/errata/RHSA-2026:23222
https://access.redhat.com/errata/RHSA-2026:23221
https://access.redhat.com/errata/RHSA-2026:19610