CVE-2024-27049: wifi: mt76: mt7925e: fix use-after-free in free_irq()

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

  • 6.7affected
  • c948b5da6bbec742b433138e3e3f9537a85af2e5 and later · before 84470b48af03a818039d587478b415cbcb264ff5affected · git
  • c948b5da6bbec742b433138e3e3f9537a85af2e5 and later · before 6d9930096e1f13cf6d9aabfbf95d0e05fb04144faffected · git
  • c948b5da6bbec742b433138e3e3f9537a85af2e5 and later · before a5a5f4413d91f395cb2d89829d376d7393ad48b9affected · git
  • before 6.7not affected · semver
  • 6.7.11 and later · up to and including 6.7.*not affected · semver
  • 6.8.2 and later · up to and including 6.8.*not affected · semver
  • 6.9 and laternot affected · original_commit_for_fix

Affected versions

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

• linux linux kernel6.7 and later · before 6.7.11
• linux linux kernel6.8 and later · before 6.8.2

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-2024-27046May 1, 2024 · nfp: flower: handle acti_netdevs allocation failure
  22Monitor
• ← EarlierCVE-2024-27048May 1, 2024 · wifi: brcm80211: handle pmk_op allocation failure
  22Monitor
• Later →CVE-2024-27050May 1, 2024 · libbpf: Use OPTS_SET() macro in bpf_xdp_query()
  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.