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CVE-2021-47240

net: qrtr: fix OOB Read in qrtr_endpoint_post

EPSS 0.2%
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
21 mai 2024Publicada no NVD
Recomendação: Monitorar — sem sinal de exploração no momento.
In the Linux kernel, the following vulnerability has been resolved: net: qrtr: fix OOB Read in qrtr_endpoint_post Syzbot reported slab-out-of-bounds Read in qrtr_endpoint_post. The problem was in wrong _size_ type: if (len != ALIGN(size, 4) + hdrlen) goto err; If size from qrtr_hdr is 4294967293 (0xfffffffd), the result of ALIGN(size, 4) will be 0. In case of len == hdrlen and size == 4294967293 in header this check won't fail and skb_put_data(skb, data + hdrlen, size); will read out of bound from data, which is hdrlen allocated block.
Produtos afetados
Linux · Linux