vulnerability
Ubuntu: (CVE-2021-47240): linux vulnerability
Severity | CVSS | Published | Added | Modified |
---|---|---|---|---|
6 | (AV:L/AC:L/Au:S/C:C/I:N/A:C) | May 21, 2024 | Nov 19, 2024 | Jun 12, 2025 |
Severity
6
CVSS
(AV:L/AC:L/Au:S/C:C/I:N/A:C)
Published
May 21, 2024
Added
Nov 19, 2024
Modified
Jun 12, 2025
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.
Solution(s)
ubuntu-upgrade-linuxubuntu-upgrade-linux-awsubuntu-upgrade-linux-aws-5-4ubuntu-upgrade-linux-aws-fipsubuntu-upgrade-linux-aws-hweubuntu-upgrade-linux-azureubuntu-upgrade-linux-azure-4-15ubuntu-upgrade-linux-azure-5-4ubuntu-upgrade-linux-azure-fipsubuntu-upgrade-linux-bluefieldubuntu-upgrade-linux-fipsubuntu-upgrade-linux-gcpubuntu-upgrade-linux-gcp-4-15ubuntu-upgrade-linux-gcp-5-4ubuntu-upgrade-linux-gcp-fipsubuntu-upgrade-linux-gkeopubuntu-upgrade-linux-hweubuntu-upgrade-linux-hwe-5-4ubuntu-upgrade-linux-kvmubuntu-upgrade-linux-oracleubuntu-upgrade-linux-oracle-5-4ubuntu-upgrade-linux-raspiubuntu-upgrade-linux-raspi-5-4
References
- CVE-2021-47240
- https://attackerkb.com/topics/CVE-2021-47240
- URL-https://git.kernel.org/linus/ad9d24c9429e2159d1e279dc3a83191ccb4daf1d
- URL-https://git.kernel.org/stable/c/19892ab9c9d838e2e5a7744d36e4bb8b7c3292fe
- URL-https://git.kernel.org/stable/c/26b8d10703a9be45d6097946b2b4011f7dd2c56f
- URL-https://git.kernel.org/stable/c/960b08dd36de1e341e3eb43d1c547513e338f4f8
- URL-https://git.kernel.org/stable/c/ad9d24c9429e2159d1e279dc3a83191ccb4daf1d
- URL-https://git.kernel.org/stable/c/f8111c0d7ed42ede41a3d0d393b104de0730a8a6
- URL-https://www.cve.org/CVERecord?id=CVE-2021-47240

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