CVE-2026-53133
RDMA/umem: Fix truncation for block sizes >= 4G
Vexday Risk Score
3Baixo
Decisão SSVC (CISA)
Track
Sem sinal de exploração → monitorar
CVSS —EPSS 0.2%KEV nãoPoC —Nuclei —Metasploit —Patch —
Ciclo de vida
25 jun 2026Publicada no NVD
Recomendação: Monitorar — sem sinal de exploração no momento.
In the Linux kernel, the following vulnerability has been resolved:
RDMA/umem: Fix truncation for block sizes >= 4G
When the iommu is used the linearization of the mapping can give a single
block that is very large split across multiple SG entries.
When __rdma_block_iter_next() reassembles the split SG entries it is
overflowing the 32 bit stack values and computed the wrong DMA addresses
for blocks after the truncation.
Use the right types to hold DMA addresses.
Produtos afetados
Linux · LinuxQuer saber se a sua infraestrutura está exposta a isto?
Falar com a TrueHacking →Referências
https://git.kernel.org/stable/c/15fe76e23615f502d051ef0768f86babaf08746chttps://git.kernel.org/stable/c/2ff4b7817e5b78070c30f5fb5e678e452a2628b3https://git.kernel.org/stable/c/8fe0231adebe086c8a459c790944ac026cd99c6ehttps://git.kernel.org/stable/c/ac1aad8e1281534ce936c250f68084fc79c5469ehttps://git.kernel.org/stable/c/afd35fec9297195b759078745549c2671223f24fhttps://git.kernel.org/stable/c/baf8685bcf56dc1efb44b8f6a57c42516e549068https://git.kernel.org/stable/c/cc644d5608e3b0dadc970bd6e6aa26b91ea07d0fhttps://git.kernel.org/stable/c/dee2a49adeeb2a5e16a3fc858fa21b841c519802