CVE-2025-37819: irqchip/gic-v2m: Prevent use after free of gicv2m_get_fwnode()

Affected versions

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

• debian debian linux11.0
• linux linux kernel5.5 and later · before 5.10.238
• linux linux kernel5.11 and later · before 5.15.182
• linux linux kernel5.16 and later · before 6.1.138
• linux linux kernel4.5 and later · before 5.4.294
• linux linux kernel6.7 and later · before 6.12.26
• linux linux kernel6.13 and later · before 6.14.5
• linux linux kernel6.2 and later · before 6.6.89
• linux linux kernel6.15

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

  • 4.5affected
  • 0644b3daca28dcb320373ae20069c269c9386304 and later · before 0c241dedc43a036599757cd08f356253fa3e5014affected · git
  • 0644b3daca28dcb320373ae20069c269c9386304 and later · before b63de43af8d215b0499eac28b2caa4439183efc1affected · git
  • 0644b3daca28dcb320373ae20069c269c9386304 and later · before f95659affee301464f0d058d528d96b35b452da8affected · git
  • 0644b3daca28dcb320373ae20069c269c9386304 and later · before dc0d654eb4179b06d3206e4396d072108b9ba082affected · git
  • 0644b3daca28dcb320373ae20069c269c9386304 and later · before 2f2803e4b5e4df2b08d378deaab78b1681ef9b30affected · git
  • 0644b3daca28dcb320373ae20069c269c9386304 and later · before 3939d6f29d34cdb60e3f68b76e39e00a964a1d51affected · git
  • 0644b3daca28dcb320373ae20069c269c9386304 and later · before 47bee0081b483b077c7560bc5358ad101f89c8efaffected · git
  • 0644b3daca28dcb320373ae20069c269c9386304 and later · before 3318dc299b072a0511d6dfd8367f3304fb6d9827affected · git
  • before 4.5not 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-2025-37817May 8, 2025 · mcb: fix a double free bug in chameleon_parse_gdd()
  31Monitor
• ← EarlierCVE-2025-37818May 8, 2025 · LoongArch: Return NULL from huge_pte_offset() for invalid PMD
  22Monitor
• Later →CVE-2025-37821May 8, 2025 · sched/eevdf: Fix se->slice being set to U64_MAX and resulting crash
  22Monitor

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.