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Fencer Intel
high 8.2

CVE-2026-37555 json

An issue was discovered in libsndfile 1.2.2 IMA ADPCM codec.

published 6mo ago modified 3mo ago also EUVD-2026-26241

cvss
8.2
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 43%
public exploits
0
none known

Summary

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.

Patch / fix

  • Red Hat Red Hat Enterprise Linux 10 0:1.2.2-6.el10_2.1
  • Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support 0:1.2.2-5.el10_0.1
  • Red Hat Red Hat Enterprise Linux 8 0:1.0.28-17.el8_10
  • Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support 0:1.0.28-10.el8_4.2
  • Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On 0:1.0.28-10.el8_4.2
  • Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support 0:1.0.28-13.el8_6
  • Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On 0:1.0.28-13.el8_6
  • Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service 0:1.0.28-14.el8_8
  • Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions 0:1.0.28-14.el8_8
  • Red Hat Red Hat Enterprise Linux 9 0:1.0.31-9.el9_8.1
  • Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions 0:1.0.31-7.el9_2.1
  • Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions 0:1.0.31-8.el9_4.2
  • Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support 0:1.0.31-9.el9_6.1
  • Red Hat Red Hat AI Inference Server 3.3 1782352847, 1782352919, 1782352950, 1782353093
  • libsndfile RHEL 9 1.0.31-9.el9_8.1
  • libsndfile-utils RHEL 9 1.0.31-9.el9_8.1
  • libsndfile RHEL 8 1.0.28-17.el8_10
  • libsndfile-utils RHEL 8 1.0.28-17.el8_10
  • libsndfile RHEL 10.2 1.2.2-6.el10_2.1
  • libsndfile-utils RHEL 10.2 1.2.2-6.el10_2.1
  • libsndfile RHEL 8.8 TUS, RHEL 8.8 E4S 1.0.28-14.el8_8
  • libsndfile-utils RHEL 8.8 TUS, RHEL 8.8 E4S 1.0.28-14.el8_8

red hat advisories RHSA-2026:25227RHSA-2026:25198RHSA-2026:25197RHSA-2026:25092RHSA-2026:23223RHSA-2026:23221

  • libsndfile openSUSE Tumbleweed 1.2.2-5.1

opensuse advisories openSUSE-SU-2026:10730-1

  • libsndfile AlmaLinux 8 1.0.28-17.el8_10
  • libsndfile-utils AlmaLinux 8 1.0.28-17.el8_10
  • libsndfile AlmaLinux 10 1.2.2-6.el10_2.1
  • libsndfile-utils AlmaLinux 10 1.2.2-6.el10_2.1
  • libsndfile AlmaLinux 9 1.0.31-9.el9_8.1
  • libsndfile-utils AlmaLinux 9 1.0.31-9.el9_8.1

almalinux advisories ALSA-2026:19559ALSA-2026:19560ALSA-2026:19610

  • libsndfile Rocky Linux 10 1.2.2-6.el10_2.1
  • libsndfile Rocky Linux 9 1.0.31-9.el9_8.1
  • libsndfile Rocky Linux 8 1.0.28-17.el8_10

rocky linux advisories RLSA-2026:19560RLSA-2026:19610RLSA-2026:19559

  • libsndfile Azure Linux 3.0 1.2.2-5

azure linux advisories AZL-85457

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

Is CVE-2026-37555 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-37555 updated cvss 8.2

libsndfile: integer overflow in ima_reader_init()

  • Red Hat Enterprise Linux 6 libsndfile Red Hat Enterprise Linux 7 libsndfile, libsndfile-utils
    affected: workaround, no fix planned “Do not process untrusted WAV files with the libsndfile library.”
  • Red Hat AI Inference Server 3.3 rhaiis/vllm-cuda-rhel9 1782352847, rhaiis/vllm-rocm-rhel9 1782353093, rhaiis/vllm-spyre-rhel9 1782352919, rhaiis/model-opt-cuda-rhel9 1782352950
    fixed: vendor fix “Do not process untrusted WAV files with the libsndfile library.” RHSA-2026:30078
  • Red Hat CodeReady Linux Builder EUS (v.9.6) libsndfile-devel 1.0.31-9.el9_6.1, libsndfile-debuginfo 1.0.31-9.el9_6.1, libsndfile-debugsource 1.0.31-9.el9_6.1, libsndfile-utils-debuginfo 1.0.31-9.el9_6.1
    fixed: vendor fix “Do not process untrusted WAV files with the libsndfile library.” RHSA-2026:23223
  • Red Hat Enterprise Linux AppStream (v. 8) libsndfile 1.0.28-17.el8_10, libsndfile-utils 1.0.28-17.el8_10
    fixed: vendor fix “Do not process untrusted WAV files with the libsndfile library.” RHSA-2026:19559
  • Red Hat Enterprise Linux AppStream (v. 9) libsndfile 1.0.31-9.el9_8.1, libsndfile-utils 1.0.31-9.el9_8.1
    fixed: vendor fix “Do not process untrusted WAV files with the libsndfile library.” RHSA-2026:19610
  • Red Hat Enterprise Linux AppStream (v. 10) libsndfile 1.2.2-6.el10_2.1, libsndfile-utils 1.2.2-6.el10_2.1
    fixed: vendor fix “Do not process untrusted WAV files with the libsndfile library.” RHSA-2026:19560
  • Red Hat Enterprise Linux AppStream AUS (v.8.4) libsndfile 1.0.28-10.el8_4.2
    fixed: vendor fix “Do not process untrusted WAV files with the libsndfile library.” RHSA-2026:25197
  • Red Hat Enterprise Linux AppStream AUS (v.8.6) libsndfile 1.0.28-13.el8_6
    fixed: vendor fix “Do not process untrusted WAV files with the libsndfile library.” RHSA-2026:25198
show 12 more
  • Red Hat Enterprise Linux AppStream E4S (v.8.8) libsndfile 1.0.28-14.el8_8, libsndfile-utils 1.0.28-14.el8_8
    fixed: vendor fix “Do not process untrusted WAV files with the libsndfile library.” RHSA-2026:25227
  • Red Hat Enterprise Linux AppStream E4S (v.9.2) libsndfile 1.0.31-7.el9_2.1, libsndfile-utils 1.0.31-7.el9_2.1
    fixed: vendor fix “Do not process untrusted WAV files with the libsndfile library.” RHSA-2026:23221
  • Red Hat Enterprise Linux AppStream E4S (v.9.4) libsndfile 1.0.31-8.el9_4.2, libsndfile-utils 1.0.31-8.el9_4.2
    fixed: vendor fix “Do not process untrusted WAV files with the libsndfile library.” RHSA-2026:23222
  • Red Hat Enterprise Linux AppStream EUS (v. 10.0) libsndfile 1.2.2-5.el10_0.1, libsndfile-utils 1.2.2-5.el10_0.1
    fixed: vendor fix “Do not process untrusted WAV files with the libsndfile library.” RHSA-2026:25092
  • Red Hat Enterprise Linux AppStream EUS (v.9.6) libsndfile 1.0.31-9.el9_6.1, libsndfile-utils 1.0.31-9.el9_6.1
    fixed: vendor fix “Do not process untrusted WAV files with the libsndfile library.” RHSA-2026:23223
  • Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4) libsndfile 1.0.28-10.el8_4.2
    fixed: vendor fix “Do not process untrusted WAV files with the libsndfile library.” RHSA-2026:25197
  • Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6) libsndfile 1.0.28-13.el8_6
    fixed: vendor fix “Do not process untrusted WAV files with the libsndfile library.” RHSA-2026:25198
  • Red Hat Enterprise Linux AppStream TUS (v.8.8) libsndfile 1.0.28-14.el8_8, libsndfile-utils 1.0.28-14.el8_8
    fixed: vendor fix “Do not process untrusted WAV files with the libsndfile library.” RHSA-2026:25227
  • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) libsndfile-devel 1.0.31-9.el9_8.1, libsndfile-debuginfo 1.0.31-9.el9_8.1, libsndfile-debugsource 1.0.31-9.el9_8.1, libsndfile-utils-debuginfo 1.0.31-9.el9_8.1
    fixed: vendor fix “Do not process untrusted WAV files with the libsndfile library.” RHSA-2026:19610
  • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) libsndfile-devel 1.2.2-6.el10_2.1, libsndfile-debuginfo 1.2.2-6.el10_2.1, libsndfile-debugsource 1.2.2-6.el10_2.1, libsndfile-utils-debuginfo 1.2.2-6.el10_2.1
    fixed: vendor fix “Do not process untrusted WAV files with the libsndfile library.” RHSA-2026:19560
  • Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) libsndfile-devel 1.2.2-5.el10_0.1, libsndfile-debuginfo 1.2.2-5.el10_0.1, libsndfile-debugsource 1.2.2-5.el10_0.1, libsndfile-utils-debuginfo 1.2.2-5.el10_0.1
    fixed: vendor fix “Do not process untrusted WAV files with the libsndfile library.” RHSA-2026:25092
  • Red Hat Enterprise Linux CRB (v. 8) libsndfile-devel 1.0.28-17.el8_10, libsndfile-debuginfo 1.0.28-17.el8_10, libsndfile-debugsource 1.0.28-17.el8_10, libsndfile-utils-debuginfo 1.0.28-17.el8_10
    fixed: vendor fix “Do not process untrusted WAV files with the libsndfile library.” RHSA-2026:19559

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
6mo ago

Exploit prediction

0.50% chance of exploitation in the next 30 days, higher than 43% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • github.com https://github.com/libsndfile/libsndfile/issues/833 referenced PoC, tagged "exploit" by a source, unverified
  • gist.github.com https://gist.github.com/sgInnora/a5f5c19e4bf6f4fb74fab7b0ef2bfcc1 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CISA ADP 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CISA ADP 3.1 8.2 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CNA 3.1 8.2 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H

Affected products

  • Red Hat Red Hat Enterprise Linux 10
  • Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support
  • Red Hat Red Hat Enterprise Linux 8
  • Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
  • Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On
  • Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
  • Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On
  • Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service
  • Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions
  • Red Hat Red Hat Enterprise Linux 9
  • Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions
  • Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions
  • Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support
  • Red Hat Red Hat AI Inference Server 3.3
  • Red Hat Red Hat Enterprise Linux 6
  • Red Hat Red Hat Enterprise Linux 7

Classification

Weakness
  • CWE-190 Integer Overflow or Wraparound

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.