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Review reviewHigh

CVE-2025-38722

Linux Linux, linux kernel

In the Linux kernel, the following vulnerability has been resolved: habanalabs: fix UAF in export_dmabuf() As soon as we'd inserted a file reference into descriptor table, another thread could close it. That's fine for the case when all we are doing is returning that descriptor to userland (it's a race, but it's a userland race and there's nothing the kernel can do about it). However, if we follow fd_install() with any kind of access to objects that would be destroyed on close (be it the struct file itself or anything destroyed by its ->release()), we have a UAF. dma_buf_fd() is a combinati...

CVSS
7.8
EPSS
-
- percentile
CISA KEV
Not listed
Published
2025.09.05
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability-
Technical severityCVSS 7.8

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: habanalabs: fix UAF in export_dmabuf() As soon as we'd inserted a file reference into descriptor table, another thread could close it. That's fine for the case when all we are doing is returning that descriptor to userland (it's a race, but it's a userland race and there's nothing the kernel can do about it). However, if we follow fd_install() with any kind of access to objects that would be destroyed on close (be it the struct file itself or anything destroyed by its ->release()), we have a UAF. dma_buf_fd() is a combinati...

Affected product and versions

Product
Linux Linux, linux kernel
Affected versions
>= db1a8dd916aac986871f6b873a3aefad906f383a < c07886761fd6251db6938d4e747002e3d150d231, >= db1a8dd916aac986871f6b873a3aefad906f383a < 40deceb38f9db759772d1c289c28fd2a543f57fc, >= db1a8dd916aac986871f6b873a3aefad906f383a < 55c232d7e0241f1d5120b595e7a9de24c75ed3d8, >= db1a8dd916aac986871f6b873a3aefad906f383a < 33927f3d0ecdcff06326d6e4edb6166aed42811c, >= 5.16, >= 5.16 < 6.12.43, >= 6.13 < 6.15.11, >= 6.16 < 6.16.2, 6.17
Fixed versions
6.12.43, 6.15.11, 6.16.2

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux Linux, linux kernel and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
CWE-416