Reference page — cumulative record through Monday, October 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
CVE-2026-98131
Linux Linux — net: stmmac: fix dma mapping leak in stmmac_tso_xmit()
AV AC PR UI S C I A CVSS EPSS %ile KEV
L L L N U N N H 5.5 .0012 1.7 —
AFFECTED
Product Versions Fixed
Linux f748be531d7012c456b97f66091d86b3675c5fef – —
Linux 4.7 – 6.18.57
TIMELINE
Sep 25 Reserved by Linux
Sep 25 Published (CNA: Linux)
Oct 8 ENRICHED — CVE-2026-98131 (Linux). Received CVSS 5.5 and CPE data from NVD.
Description
In the Linux kernel, the following vulnerability has been resolved:
net: stmmac: fix dma mapping leak in stmmac_tso_xmit()
In stmmac_tso_xmit(), if the DMA mapping of an skb fragment fails, the
frame is dropped but the DMA mappings already created for the linear
part and for the fragments mapped before the failure are never
unmapped, leaking DMA mappings.
Fix the leak by walking back over the descriptors used by the frame and
releasing each of them with stmmac_free_tx_buffer(). Moreover, release
the descriptors with stmmac_release_tx_desc() unmapping the DMA buffers.
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
| September 25, 2026 | Reserved | Reserved by Linux |
| September 25, 2026 | Published | Published (CNA: Linux) |
| October 8, 2026 | ENRICHED | ENRICHED — CVE-2026-98131 (Linux). Received CVSS 5.5 and CPE data from NVD. |
Affected
Affected products and packages — 2 rows
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
| Linux | Linux | — | f748be531d7012c456b97f66091d86b3675c5fef | — |
| Linux | Linux | — | 4.7 | 6.18.57 |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-98131 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 Monday, October 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.