CVE - CVE-2021-47240

CVE-ID
CVE-2021-47240	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
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.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/19892ab9c9d838e2e5a7744d36e4bb8b7c3292fe URL:https://git.kernel.org/stable/c/19892ab9c9d838e2e5a7744d36e4bb8b7c3292fe MISC:https://git.kernel.org/stable/c/26b8d10703a9be45d6097946b2b4011f7dd2c56f URL:https://git.kernel.org/stable/c/26b8d10703a9be45d6097946b2b4011f7dd2c56f MISC:https://git.kernel.org/stable/c/960b08dd36de1e341e3eb43d1c547513e338f4f8 URL:https://git.kernel.org/stable/c/960b08dd36de1e341e3eb43d1c547513e338f4f8 MISC:https://git.kernel.org/stable/c/ad9d24c9429e2159d1e279dc3a83191ccb4daf1d URL:https://git.kernel.org/stable/c/ad9d24c9429e2159d1e279dc3a83191ccb4daf1d MISC:https://git.kernel.org/stable/c/f8111c0d7ed42ede41a3d0d393b104de0730a8a6 URL:https://git.kernel.org/stable/c/f8111c0d7ed42ede41a3d0d393b104de0730a8a6
Assigning CNA
kernel.org
Date Record Created
20240410	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20240410)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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