CVE-2021-47240 (GCVE-0-2021-47240)
Vulnerability from cvelistv5
Published
2024-05-21 14:19
Modified
2025-05-04 07:06
Severity ?
Summary
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.
References
Impacted products
Vendor Product Version
Linux Linux Version: 194ccc88297ae78d0803adad83c6dcc369787c9e
Version: 194ccc88297ae78d0803adad83c6dcc369787c9e
Version: 194ccc88297ae78d0803adad83c6dcc369787c9e
Version: 194ccc88297ae78d0803adad83c6dcc369787c9e
Version: 194ccc88297ae78d0803adad83c6dcc369787c9e
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