Vulnerability Details : CVE-2021-3743
An out-of-bounds (OOB) memory read flaw was found in the Qualcomm IPC router protocol in the Linux kernel. A missing sanity check allows a local attacker to gain access to out-of-bounds memory, leading to a system crash or a leak of internal kernel information. The highest threat from this vulnerability is to system availability.
Products affected by CVE-2021-3743
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:5.14:rc6:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:5.17:rc1:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:5.17:rc2:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:5.17:rc3:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:5.17:rc4:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:5.17:rc5:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:5.17:-:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:5.17:rc6:*:*:*:*:*:*
- cpe:2.3:a:oracle:communications_cloud_native_core_policy:22.2.0:*:*:*:*:*:*:*
- cpe:2.3:a:oracle:communications_cloud_native_core_binding_support_function:22.1.3:*:*:*:*:*:*:*
- cpe:2.3:a:oracle:communications_cloud_native_core_network_exposure_function:22.1.1:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
- cpe:2.3:o:netapp:h410c_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:netapp:h300s_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:netapp:h500s_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:netapp:h700s_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:netapp:h300e_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:netapp:h500e_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:netapp:h700e_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:netapp:h410s_firmware:-:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-3743
0.05%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 19 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-3743
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
3.6
|
LOW | AV:L/AC:L/Au:N/C:P/I:N/A:P |
3.9
|
4.9
|
NIST | |
|
7.1
|
HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H |
1.8
|
5.2
|
NIST |
CWE ids for CVE-2021-3743
-
The product reads data past the end, or before the beginning, of the intended buffer.Assigned by:
- nvd@nist.gov (Secondary)
- secalert@redhat.com (Primary)
References for CVE-2021-3743
-
https://lists.openwall.net/netdev/2021/08/17/124
netdev - Another out-of-bound Read in qrtr_endpoint_post in net/qrtr/qrtr.cExploit;Mailing List;Third Party Advisory
-
https://bugzilla.redhat.com/show_bug.cgi?id=1997961
1997961 – (CVE-2021-3743) CVE-2021-3743 kernel: out-of-bound Read in qrtr_endpoint_post in net/qrtr/qrtr.cIssue Tracking;Patch;Third Party Advisory
-
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7e78c597c3ebfd0cb329aa09a838734147e4f117
kernel/git/torvalds/linux.git - Linux kernel source treePatch;Vendor Advisory
-
https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/?id=7e78c597c3eb
kernel/git/netdev/net.git - Netdev Group's networking treePatch;Vendor Advisory
-
https://security.netapp.com/advisory/ntap-20220407-0007/
CVE-2021-3743 Linux Kernel Vulnerability in NetApp Products | NetApp Product SecurityThird Party Advisory
-
https://www.openwall.com/lists/oss-security/2021/08/27/2
oss-security - Re: Linux kernel: qrtr: another out-of-bound Read in qrtr_endpoint_post in net/qrtr/qrtr.cExploit;Mailing List;Patch;Third Party Advisory
-
https://github.com/torvalds/linux/commit/7e78c597c3ebfd0cb329aa09a838734147e4f117
net: qrtr: fix another OOB Read in qrtr_endpoint_post · torvalds/linux@7e78c59 · GitHubPatch;Third Party Advisory
-
https://www.oracle.com/security-alerts/cpujul2022.html
Oracle Critical Patch Update Advisory - July 2022Patch;Third Party Advisory
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