linux: In the Linux kernel, the following vulnerability has been resolved: net: qrtr: fix OOB Read in qrtr_endpoint_post S...
CVE-2021-47240 is fixed in linux on 1 platform, first by DEBIAN-CVE-2021-47240, released May 21, 2024. It is not reported as exploited. Patch Radar priority: High.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| linux · Debian 12.15 (bookworm) | 5.10.46-1 | DEBIAN-CVE-2021-47240 | May 21, 2024 |
| linux · Debian 13.5 (trixie) | 5.10.46-1 | DEBIAN-CVE-2021-47240 | May 21, 2024 |
| linux · Debian 14 | 5.10.46-1 | DEBIAN-CVE-2021-47240 | May 21, 2024 |
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