Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
AV AC PR UI S C I A CVSS EPSS %ile KEV L L L N U N N H 5.5 .0042 34.8 —
AFFECTED Product Versions Fixed Linux 9ac7849e35f705830f7b016ff272b0ff1f7ff759 – — Linux 2.6.21 – 4.19.320
TIMELINE Aug 17 Reserved by Linux Aug 17 Published (CNA: Linux) Aug 4 RESCORED — CVE-2024-43856 (Linux). CVSS 7.8 → 5.5 (NVD).
In the Linux kernel, the following vulnerability has been resolved: dma: fix call order in dmam_free_coherent dmam_free_coherent() frees a DMA allocation, which makes the freed vaddr available for reuse, then calls devres_destroy() to remove and free the data structure used to track the DMA allocation. Between the two calls, it is possible for a concurrent task to make an allocation with the same vaddr and add it to the devres list. If this happens, there will be two entries in the devres list with the same vaddr and devres_destroy() can free the wrong entry, triggering the WARN_ON() in dmam_match. Fix by destroying the devres entry before freeing the DMA allocation. kokonut //net/encryption http://sponge2/b9145fe6-0f72-4325-ac2f-a84d81075b03
| Date | Event | Detail |
|---|---|---|
| August 17, 2024 | Reserved | Reserved by Linux |
| August 17, 2024 | Published | Published (CNA: Linux) |
| August 4, 2026 | RESCORED | RESCORED — CVE-2024-43856 (Linux). CVSS 7.8 → 5.5 (NVD). |
Authoritative record: CVE-2024-43856 at cve.org
Vendors: linux
Weaknesses: CWE-770
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2024-43856 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.