01 Record

CVE-2025-40269

ALSA: usb-audio: Fix potential overflow of PCM transfer buffer

HighPUBLISHEDCNA: Linux

CNA base score7.8 CVSS v3.xCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

View raw JSON

02 Description

ALSA: usb-audio: Fix potential overflow of PCM transfer buffer

03 Exploitation and scoring

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.18% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 7.4% of scored records. A rank, not a probability.

NVD base score

7.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

NVD analysis status

Deferred. NVD last modified this record on 2026-07-30.

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2025-12-06 21:50Z9 MO AGO

Last updated

2026-08-05 12:09Z1 MO AGO

Reserved

2025-04-16

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 7.8)

CNA CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weaknesses

CWE-131Incorrect Calculation of Buffer SizeBase

Data version

5.2

Document digest

45050fdddf0cc75e22e9b1c06143173cad4eb207841d55fd7c1ac4725a698ca5

05 Affected products

VendorProductVersionsPlatforms

LinuxLinux02c56650f3c118d3752122996d96173d26bb13aa to < 480a1490c595a242f27493a4544b3efb21b29f6a, 5ef30e443e6d3654cccecec99cf481a69a0a6d3b to < ab0b5e92fc36ee82c1bd01fe896d0f775ed5de41, 99703c921864a318e3e8aae74fde071b1ff35bea to < 282aba56713bbc58155716b55ca7222b2d9cf3c8, 2d50acd7dbd0682a56968ad9551341d7fc5b6eaf to < c4dc012b027c9eb101583011089dea14d744e314, aba41867dd66939d336fdf604e4d73b805d8039f to < e0ed5a36fb3ab9e7b9ee45cd17f09f6d5f594360, d288dc74f8cf95cb7ae0aaf245b7128627a49bf3 to < d67dde02049e632ba58d3c44a164a74b6a737154, f0bd62b64016508938df9babe47f65c2c727d25c to < 6a5da3fa80affc948923f20a4e086177f505e86e, f0bd62b64016508938df9babe47f65c2c727d25c to < 217d47255a2ec8b246f2725f5db9ac3f1d4109d7, f0bd62b64016508938df9babe47f65c2c727d25c to < ef592bf2232a2daa9fffa8881881fc9957ea56e9, f0bd62b64016508938df9babe47f65c2c727d25c to < ece3b981bb6620e47fac826a2156c090b1a936a0, f0bd62b64016508938df9babe47f65c2c727d25c to < 98e9d5e33bda8db875cc1a4fe99c192658e45ab6, f0bd62b64016508938df9babe47f65c2c727d25c to < d2c04f20ccc6c0d219e6d3038bab45bc66a178ad, f0bd62b64016508938df9babe47f65c2c727d25c to < 05a1fc5efdd8560f34a3af39c9cf1e1526cc3ddf, 4.4.229 to < 4.4.230, 4.9.229 to < 4.9.230, 4.14.186 to < 4.14.188, 4.19.130 to < 4.19.132, 5.4.49 to < 5.4.51, 5.7.6 to < 5.7.8, 5.8—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/480a1490c595a242f27493a4544b3efb21b29f6a
git.kernel.orghttps://git.kernel.org/stable/c/ab0b5e92fc36ee82c1bd01fe896d0f775ed5de41
git.kernel.orghttps://git.kernel.org/stable/c/282aba56713bbc58155716b55ca7222b2d9cf3c8
git.kernel.orghttps://git.kernel.org/stable/c/c4dc012b027c9eb101583011089dea14d744e314
git.kernel.orghttps://git.kernel.org/stable/c/e0ed5a36fb3ab9e7b9ee45cd17f09f6d5f594360
git.kernel.orghttps://git.kernel.org/stable/c/d67dde02049e632ba58d3c44a164a74b6a737154
git.kernel.orghttps://git.kernel.org/stable/c/6a5da3fa80affc948923f20a4e086177f505e86e
git.kernel.orghttps://git.kernel.org/stable/c/217d47255a2ec8b246f2725f5db9ac3f1d4109d7
git.kernel.orghttps://git.kernel.org/stable/c/ef592bf2232a2daa9fffa8881881fc9957ea56e9
git.kernel.orghttps://git.kernel.org/stable/c/ece3b981bb6620e47fac826a2156c090b1a936a0
git.kernel.orghttps://git.kernel.org/stable/c/98e9d5e33bda8db875cc1a4fe99c192658e45ab6
git.kernel.orghttps://git.kernel.org/stable/c/d2c04f20ccc6c0d219e6d3038bab45bc66a178ad
git.kernel.orghttps://git.kernel.org/stable/c/05a1fc5efdd8560f34a3af39c9cf1e1526cc3ddf

01 Record index

CVE-2025-40269

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References

02 Records

CVE-2025-40269

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References