CVE-2025-40269

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: Fix potential overflow of PCM transfer buffer The PCM stream data in USB-audio driver is transferred over USB URB packet buffers, and each packet size is determined dynamically. The packet sizes are limited by some factors such as wMaxPacketSize USB descriptor. OTOH, in the current code, the actually used packet sizes are determined only by the rate and the PPS, which may be bigger than the size limit above. This results in a buffer overflow, as reported by syzbot. Basically when the limit is smaller than t...

Affected product and versions

Product

Linux

Affected versions

>= 02c56650f3c118d3752122996d96173d26bb13aa < 480a1490c595a242f27493a4544b3efb21b29f6a, >= 5ef30e443e6d3654cccecec99cf481a69a0a6d3b < ab0b5e92fc36ee82c1bd01fe896d0f775ed5de41, >= 99703c921864a318e3e8aae74fde071b1ff35bea < 282aba56713bbc58155716b55ca7222b2d9cf3c8, >= 2d50acd7dbd0682a56968ad9551341d7fc5b6eaf < c4dc012b027c9eb101583011089dea14d744e314, >= aba41867dd66939d336fdf604e4d73b805d8039f < e0ed5a36fb3ab9e7b9ee45cd17f09f6d5f594360, >= d288dc74f8cf95cb7ae0aaf245b7128627a49bf3 < d67dde02049e632ba58d3c44a164a74b6a737154, >= f0bd62b64016508938df9babe47f65c2c727d25c < 6a5da3fa80affc948923f20a4e086177f505e86e, >= f0bd62b64016508938df9babe47f65c2c727d25c < 217d47255a2ec8b246f2725f5db9ac3f1d4109d7, >= f0bd62b64016508938df9babe47f65c2c727d25c < ef592bf2232a2daa9fffa8881881fc9957ea56e9, >= f0bd62b64016508938df9babe47f65c2c727d25c < ece3b981bb6620e47fac826a2156c090b1a936a0, >= f0bd62b64016508938df9babe47f65c2c727d25c < 98e9d5e33bda8db875cc1a4fe99c192658e45ab6, >= f0bd62b64016508938df9babe47f65c2c727d25c < d2c04f20ccc6c0d219e6d3038bab45bc66a178ad, >= f0bd62b64016508938df9babe47f65c2c727d25c < 05a1fc5efdd8560f34a3af39c9cf1e1526cc3ddf, >= 4.4.229 < 4.4.230, >= 4.9.229 < 4.9.230, >= 4.14.186 < 4.14.188, >= 4.19.130 < 4.19.132, >= 5.4.49 < 5.4.51, >= 5.7.6 < 5.7.8, >= 5.8

Fixed versions

No verified fixed-version field is available yet

Technical data

CVSS vector

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

CWE

Not available