CVE-2021-47240
Published: May 21, 2024
Modified: May 11, 2026
Description
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.
| Vendor | Product | Versions |
|---|---|---|
Linux | Linux | affected 194ccc88297ae78d0803adad83c6dcc369787c9e - < f8111c0d7ed42ede41a3d0d393b104de0730a8a6affected 194ccc88297ae78d0803adad83c6dcc369787c9e - < 26b8d10703a9be45d6097946b2b4011f7dd2c56faffected 194ccc88297ae78d0803adad83c6dcc369787c9e - < 960b08dd36de1e341e3eb43d1c547513e338f4f8affected 194ccc88297ae78d0803adad83c6dcc369787c9e - < 19892ab9c9d838e2e5a7744d36e4bb8b7c3292feaffected 194ccc88297ae78d0803adad83c6dcc369787c9e - < ad9d24c9429e2159d1e279dc3a83191ccb4daf1d |
Linux | Linux | affected 4.15unaffected 0 - < 4.15unaffected 4.19.196 - <= 4.19.*unaffected 5.4.128 - <= 5.4.*unaffected 5.10.46 - <= 5.10.*+2 more versions |
References
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