CVE-2025-21928: HID: intel-ish-hid: Fix use-after-free issue in ishtp_hid_remove()

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

• linux linux kernel4.9 and later · before 5.4.291
• linux linux kernel5.5 and later · before 5.10.235
• linux linux kernel5.11 and later · before 5.15.179
• linux linux kernel5.16 and later · before 6.1.131
• linux linux kernel6.2 and later · before 6.6.83
• linux linux kernel6.7 and later · before 6.12.19
• linux linux kernel6.13 and later · before 6.13.7
• linux linux kernel6.14

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

• Linux Linux

  • 4.9affected
  • 0b28cb4bcb17dcb5fe0763fc3e1a94398b8f6cf6 and later · before 0c1fb475ef999d6c22fc3f963fdf20cb3ed1b03daffected · git
  • 0b28cb4bcb17dcb5fe0763fc3e1a94398b8f6cf6 and later · before d3faae7f42181865c799d88c5054176f38ae4625affected · git
  • 0b28cb4bcb17dcb5fe0763fc3e1a94398b8f6cf6 and later · before 01b18a330cda61cc21423a7d1af92cf31ded8f60affected · git
  • 0b28cb4bcb17dcb5fe0763fc3e1a94398b8f6cf6 and later · before cf1a6015d2f6b1f0afaa0fd6a0124ff2c7943394affected · git
  • 0b28cb4bcb17dcb5fe0763fc3e1a94398b8f6cf6 and later · before 560f4d1299342504a6ab8a47f575b5e6b8345adaaffected · git
  • 0b28cb4bcb17dcb5fe0763fc3e1a94398b8f6cf6 and later · before dea6a349bcaf243fff95dfd0428a26be6a0fb44eaffected · git
  • 0b28cb4bcb17dcb5fe0763fc3e1a94398b8f6cf6 and later · before eb0695d87a81e7c1f0509b7d8ee7c65fbc26aec9affected · git
  • 0b28cb4bcb17dcb5fe0763fc3e1a94398b8f6cf6 and later · before 07583a0010696a17fb0942e0b499a62785c5fc9faffected · git
  • before 4.9not affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

Other highest-scoring records for the same primary product.

• CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
  90Now
• CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV
  89Now
• CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
  85Now

Published before and after this one in the same product

• ← EarlierCVE-2025-21922Apr 1, 2025 · ppp: Fix KMSAN uninit-value warning with bpf
  22Monitor
• ← EarlierCVE-2025-21923Apr 1, 2025 · HID: hid-steam: Fix use-after-free when detaching device
  31Monitor
• Later →CVE-2025-21929Apr 1, 2025 · HID: intel-ish-hid: Fix use-after-free issue in hid_ishtp_cl_remove()
  31Monitor

Root cause

After a memory region is freed, another reference pointing to it is still used. By then, the same region may have been allocated for different data.

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

1free(dev->buf);2/* ... another thread is still running ... */3process(dev->buf);

1lock(&dev->lock);2free(dev->buf);3dev->buf = NULL;4unlock(&dev->lock);

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.