Search/CVE-2025-38439
● CVE — Critical

CVE-2025-38439

Vendordebian, linuxProductdebian linux, linux kernelDiscoveredJul 25, 2025UpdatedJul 30, 2026

In the Linux kernel, the following vulnerability has been resolved: bnxt_en: Set DMA unmap len correctly for XDP_REDIRECT When transmitting an XDP_REDIRECT packet, call dma_unmap_len_set() with the proper length instead of 0. This bug triggers this warning on a system with IOMMU enabled: WARNING: CPU: 36 PID: 0 at drivers/iommu/dma-iommu.c:842 __iommu_dma_unmap+0x159/0x170 RIP: 0010:__iommu_dma_unmap+0x159/0x170 Code: a8 00 00 00 00 48 c7 45 b0 00 00 00 00 48 c7 45 c8 00 00 00 00 48 c7 45 a0 ff ff ff ff 4c 89 45 b8 4c 89 45 c0 e9 77 ff ff ff 0b e9 60 ff ff ff e8 8b bf 6a 00 66 66 2e 0f 1f 84 00 00 00 00 RSP: 0018:ff22d31181150c88 EFLAGS: 00010206 RAX: 0000000000002000 RBX: 00000000e13a0000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP:…

CVSS v3.1
9.8 CRITICAL
EPSS
0.58%
probability of exploitation in 30 days
CISA KEV
Not listed
no confirmed exploitation reported
News coverage
31
sources referencing this CVE
Related IOCs
0
seen in the same coverage
EPSS Trend
Aug 16, 2026 → Oct 27, 2026
▲ 0.09pp
0.49% → 0.58% over 4 tracked changes
CVSS v3.1 Detail
Attack VectorNETWORK
Attack ComplexityLOW
Privileges RequiredNONE
User InteractionNONE
ScopeUNCHANGED
ConfidentialityHIGH
IntegrityHIGH
AvailabilityHIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Connections
33 relationships
Timeline
disclosure → media coverage
Jul 25, 2025
Disclosure — published as a CVE record. · last revised by NVD Jul 30, 2026
Sep 25, 2025
ubuntu.com reports: USN-7774-1: Linux kernel vulnerabilities
Sep 25, 2025
ubuntu.com reports: USN-7774-2: Linux kernel (FIPS) vulnerabilities
Sep 25, 2025
ubuntu.com reports: USN-7774-3: Linux kernel (Real-time) vulnerabilities
Sep 25, 2025
ubuntu.com reports: USN-7775-1: Linux kernel (Azure FIPS) vulnerabilities
Sep 25, 2025
ubuntu.com reports: USN-7776-1: Linux kernel (Oracle) vulnerabilities
Sep 26, 2025
ubuntu.com reports: USN-7775-2: Linux kernel (Azure) vulnerabilities
Oct 1, 2025
ubuntu.com reports: USN-7775-3: Linux kernel (Azure) vulnerabilities
Oct 1, 2025
ubuntu.com reports: USN-7774-4: Linux kernel (KVM) vulnerabilities
Oct 6, 2025
ubuntu.com reports: USN-7774-5: Linux kernel (NVIDIA Tegra IGX) vulnerabilities
Nov 21, 2025
ubuntu.com reports: USN-7879-1: Linux kernel vulnerabilities
Nov 21, 2025
ubuntu.com reports: USN-7879-2: Linux kernel (Real-time) vulnerabilities
Nov 21, 2025
ubuntu.com reports: USN-7880-1: Linux kernel (OEM) vulnerabilities
Nov 26, 2025
ubuntu.com reports: USN-7879-3: Linux kernel vulnerabilities
Dec 4, 2025
ubuntu.com reports: USN-7879-4: Linux kernel vulnerabilities
Dec 15, 2025
ubuntu.com reports: USN-7934-1: Linux kernel (Azure) vulnerabilities
Feb 11, 2026
ubuntu.com reports: USN-8028-1: Linux kernel vulnerabilities
Feb 12, 2026
ubuntu.com reports: USN-8028-2: Linux kernel (Real-time) vulnerabilities
Feb 12, 2026
ubuntu.com reports: USN-8031-1: Linux kernel (GCP) vulnerabilities
Feb 17, 2026
ubuntu.com reports: USN-8028-3: Linux kernel (Real-time) vulnerabilities
Feb 17, 2026
ubuntu.com reports: USN-8028-4: Linux kernel (FIPS) vulnerabilities
Feb 17, 2026
ubuntu.com reports: USN-8028-5: Linux kernel vulnerabilities
Feb 18, 2026
ubuntu.com reports: USN-8031-2: Linux kernel (GCP FIPS) vulnerabilities
Feb 19, 2026
ubuntu.com reports: USN-8028-6: Linux kernel (HWE) vulnerabilities
Feb 19, 2026
ubuntu.com reports: USN-8031-3: Linux kernel vulnerabilities
Feb 19, 2026
ubuntu.com reports: USN-8052-1: Linux kernel (Low Latency) vulnerabilities
Feb 19, 2026
ubuntu.com reports: USN-8028-7: Linux kernel (Low Latency NVIDIA) vulnerabilities
Feb 24, 2026
ubuntu.com reports: USN-8028-8: Linux kernel (IBM) vulnerabilities
Feb 24, 2026
ubuntu.com reports: USN-8052-2: Linux kernel (Xilinx) vulnerabilities
Mar 4, 2026
ubuntu.com reports: USN-8074-1: Linux kernel (Azure) vulnerabilities
Mar 4, 2026
ubuntu.com reports: USN-8074-2: Linux kernel (Azure FIPS) vulnerabilities
Mar 25, 2026
ubuntu.com reports: USN-8126-1: Linux kernel (Azure) vulnerabilities