CVE-2021-47240
"Qualcomm Radio TR (QRTR) Kernel Slab Out-of-Bounds Read Vulnerability"
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.
INFO
Published Date :
May 21, 2024, 3:15 p.m.
Last Modified :
Dec. 30, 2024, 7:04 p.m.
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Remotely Exploitable :
No
Impact Score :
5.2
Exploitability Score :
1.8
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2021-47240.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-47240 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-47240 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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Initial Analysis by [email protected]
Dec. 30, 2024
Action Type Old Value New Value Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H Added CWE NIST CWE-125 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.15 up to (excluding) 4.19.196 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.20 up to (excluding) 5.4.128 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.5 up to (excluding) 5.10.46 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.12.13 *cpe:2.3:o:linux:linux_kernel:5.13:rc1:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:5.13:rc2:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:5.13:rc3:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:5.13:rc4:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:5.13:rc5:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:5.13:rc6:*:*:*:*:*:* Changed Reference Type https://git.kernel.org/stable/c/19892ab9c9d838e2e5a7744d36e4bb8b7c3292fe No Types Assigned https://git.kernel.org/stable/c/19892ab9c9d838e2e5a7744d36e4bb8b7c3292fe Patch Changed Reference Type https://git.kernel.org/stable/c/19892ab9c9d838e2e5a7744d36e4bb8b7c3292fe No Types Assigned https://git.kernel.org/stable/c/19892ab9c9d838e2e5a7744d36e4bb8b7c3292fe Patch Changed Reference Type https://git.kernel.org/stable/c/26b8d10703a9be45d6097946b2b4011f7dd2c56f No Types Assigned https://git.kernel.org/stable/c/26b8d10703a9be45d6097946b2b4011f7dd2c56f Patch Changed Reference Type https://git.kernel.org/stable/c/26b8d10703a9be45d6097946b2b4011f7dd2c56f No Types Assigned https://git.kernel.org/stable/c/26b8d10703a9be45d6097946b2b4011f7dd2c56f Patch Changed Reference Type https://git.kernel.org/stable/c/960b08dd36de1e341e3eb43d1c547513e338f4f8 No Types Assigned https://git.kernel.org/stable/c/960b08dd36de1e341e3eb43d1c547513e338f4f8 Patch Changed Reference Type https://git.kernel.org/stable/c/960b08dd36de1e341e3eb43d1c547513e338f4f8 No Types Assigned https://git.kernel.org/stable/c/960b08dd36de1e341e3eb43d1c547513e338f4f8 Patch Changed Reference Type https://git.kernel.org/stable/c/ad9d24c9429e2159d1e279dc3a83191ccb4daf1d No Types Assigned https://git.kernel.org/stable/c/ad9d24c9429e2159d1e279dc3a83191ccb4daf1d Patch Changed Reference Type https://git.kernel.org/stable/c/ad9d24c9429e2159d1e279dc3a83191ccb4daf1d No Types Assigned https://git.kernel.org/stable/c/ad9d24c9429e2159d1e279dc3a83191ccb4daf1d Patch Changed Reference Type https://git.kernel.org/stable/c/f8111c0d7ed42ede41a3d0d393b104de0730a8a6 No Types Assigned https://git.kernel.org/stable/c/f8111c0d7ed42ede41a3d0d393b104de0730a8a6 Patch Changed Reference Type https://git.kernel.org/stable/c/f8111c0d7ed42ede41a3d0d393b104de0730a8a6 No Types Assigned https://git.kernel.org/stable/c/f8111c0d7ed42ede41a3d0d393b104de0730a8a6 Patch -
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://git.kernel.org/stable/c/19892ab9c9d838e2e5a7744d36e4bb8b7c3292fe Added Reference https://git.kernel.org/stable/c/26b8d10703a9be45d6097946b2b4011f7dd2c56f Added Reference https://git.kernel.org/stable/c/960b08dd36de1e341e3eb43d1c547513e338f4f8 Added Reference https://git.kernel.org/stable/c/ad9d24c9429e2159d1e279dc3a83191ccb4daf1d Added Reference https://git.kernel.org/stable/c/f8111c0d7ed42ede41a3d0d393b104de0730a8a6 -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 28, 2024
Action Type Old Value New Value -
CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 21, 2024
Action Type Old Value New Value Added 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. Added Reference kernel.org https://git.kernel.org/stable/c/f8111c0d7ed42ede41a3d0d393b104de0730a8a6 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/26b8d10703a9be45d6097946b2b4011f7dd2c56f [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/960b08dd36de1e341e3eb43d1c547513e338f4f8 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/19892ab9c9d838e2e5a7744d36e4bb8b7c3292fe [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/ad9d24c9429e2159d1e279dc3a83191ccb4daf1d [No types assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-47240 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2021-47240
weaknesses.