PT-2019-1635
CVE-2019-8956
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Published
2019-02-01
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Updated
2025-09-29
Description by
CVSS 3.1
7.8
HighMetricsAV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Name of the Vulnerable Software and Affected Versions
Linux Kernel versions prior to 4.20.8
Linux Kernel versions prior to 4.19.21
Description
A use-after-free error in the
sctp sendmsg() function when handling the SCTP SENDALL flag can be exploited to corrupt memory, potentially allowing an attacker to cause a denial of service or elevate their privileges. The issue is related to the implementation of the SCTP protocol in the Linux Kernel.Recommendations
For Linux Kernel versions prior to 4.20.8, update to version 4.20.8 or later to resolve the issue.
For Linux Kernel versions prior to 4.19.21, update to version 4.19.21 or later to resolve the issue.
As a temporary workaround, consider disabling the
sctp sendmsg() function until a patch is available.Exploitability
Exploit
Fix
Impacts
Researchers
Vendors
Affected products
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