CVE-2026-46004

HIGH EPSS 2.9%
Published May 27, 20261mo ago · Modified Jun 17, 20262w ago
7.8 CVSS 3.1
High
Find Similar
Published May 27, 2026 1mo ago
Last Modified Jun 17, 2026 2w ago

Description

In the Linux kernel, the following vulnerability has been resolved: ALSA: caiaq: Handle probe errors properly The probe procedure of setup_card() in caiaq driver doesn't treat the error cases gracefully, e.g. the error from snd_card_register() calls snd_card_free() but continues. This would lead to a UAF for the further calls like snd_usb_caiaq_control_init(), as Berk suggested in another patch in the link below. However, the problem is not only that; in general, this function drops the all error handlings (as it's a void function) although its caller can propagate an error to snd_probe(), which eventually calls snd_card_free() as a proper error path. That said, we should treat each error case in setup_card(), and just return the error code promptly, which is then handled later as a fatal error in snd_probe(). This patch achieves it by changing the setup_card() to return an error code. Also, the superfluous snd_card_free() call is removed, too. Note that card->private_free can be set still safely at returning an error. All called functions in card_free() have checks of the unassigned resources or NULL checks.

CVSS Details

Base Score
7.8
Exploitability
1.8
Impact
5.9
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
2.9% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-416 Use After Free Memory Safety

Affected Products 7

VendorProductVersionRange
linuxlinux_kernel*≥2.6.25  –  <5.10.258
linuxlinux_kernel*≥5.11  –  <5.15.209
linuxlinux_kernel*≥5.16  –  <6.1.175
linuxlinux_kernel*≥6.2  –  <6.6.140
linuxlinux_kernel*≥6.7  –  <6.12.86
linuxlinux_kernel*≥6.13  –  <6.18.27
linuxlinux_kernel*≥6.19  –  <7.0.4

References 8

  • git.kernel.org https://git.kernel.org/stable/c/09616e25f502080ba684fc7fcf959d1376ab756d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/096dd8519cf2f768e9e14f224b627f7aaee1a9c5
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/28abd224db4a49560b452115bca3672a20e45b2f
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6251e3e256337a30160ef59ab1580dde4d1acd28
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/b956e48371f2ff72b76be9a829800ecec963bd45
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/da938aa9fc7826901921dcea225948ab21a97e45
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e59ecd4ee3a450db6cb4e4ecaa3efdd593f80056
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/f537e3ad69609f6924a4db6b4a7f6561f5288bdd
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/09616e25f502080ba684fc7fcf959d1376ab756d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/096dd8519cf2f768e9e14f224b627f7aaee1a9c5
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/28abd224db4a49560b452115bca3672a20e45b2f
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6251e3e256337a30160ef59ab1580dde4d1acd28
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/b956e48371f2ff72b76be9a829800ecec963bd45
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/da938aa9fc7826901921dcea225948ab21a97e45
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e59ecd4ee3a450db6cb4e4ecaa3efdd593f80056
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/f537e3ad69609f6924a4db6b4a7f6561f5288bdd
    Patch