Ubuntu.comUB:CVE-2021-47240CVE-2021-47240
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.
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| ubuntu | 18.04 | noarch | linux | < any | UNKNOWN |
| ubuntu | 20.04 | noarch | linux | < any | UNKNOWN |
| ubuntu | 22.04 | noarch | linux | < any | UNKNOWN |
| ubuntu | 23.10 | noarch | linux | < any | UNKNOWN |
| ubuntu | 24.04 | noarch | linux | < any | UNKNOWN |
| ubuntu | 14.04 | noarch | linux | < any | UNKNOWN |
| ubuntu | 16.04 | noarch | linux | < any | UNKNOWN |
| ubuntu | 18.04 | noarch | linux-aws | < any | UNKNOWN |
| ubuntu | 20.04 | noarch | linux-aws | < any | UNKNOWN |
| ubuntu | 22.04 | noarch | linux-aws | < any | UNKNOWN |
References
git.kernel.org/linus/ad9d24c9429e2159d1e279dc3a83191ccb4daf1d (5.13-rc7)
git.kernel.org/stable/c/19892ab9c9d838e2e5a7744d36e4bb8b7c3292fe
git.kernel.org/stable/c/26b8d10703a9be45d6097946b2b4011f7dd2c56f
git.kernel.org/stable/c/960b08dd36de1e341e3eb43d1c547513e338f4f8
git.kernel.org/stable/c/ad9d24c9429e2159d1e279dc3a83191ccb4daf1d
git.kernel.org/stable/c/f8111c0d7ed42ede41a3d0d393b104de0730a8a6
launchpad.net/bugs/cve/CVE-2021-47240
nvd.nist.gov/vuln/detail/CVE-2021-47240
security-tracker.debian.org/tracker/CVE-2021-47240
www.cve.org/CVERecord?id=CVE-2021-47240
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