CVE-2019-8956 — Use After Free in Kernel

CWE-416 — Use After FreeCWE-787 — Out-of-bounds Write10 documents7 sources
Severity
7.8HIGHNVD
EPSS
1.0%
top 22.71%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
Linux KernelDebian LinuxCanonical Ubuntu Linux
Timeline
PublishedApr 1
Latest updateMay 13

Description

In the Linux Kernel before versions 4.20.8 and 4.19.21 a use-after-free error in the "sctp_sendmsg()" function (net/sctp/socket.c) when handling SCTP_SENDALL flag can be exploited to corrupt memory.

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HExploitability: 1.8 | Impact: 5.9

Affected Packages3 packages

▶NVDlinux/linux_kernel4.17 — 4.19.21+1
▶Debianlinux/linux_kernel< 4.19.28-1+3
▶debiandebian/linux< linux 4.19.28-1 (bookworm)

Also affects: Ubuntu Linux 18.04, 18.10

Patches

Patch: git.kernel.org ↗Patch: git.kernel.org ↗

🔴Vulnerability Details

3
GHSA
GHSA-6647-2gmj-c8h8: In the Linux Kernel before versions 4↗2022-05-13
▶
OSV
linux-hwe, linux-azure vulnerabilities↗2019-04-02
▶
OSV
CVE-2019-8956: In the Linux Kernel before versions 4↗2019-04-01
▶

📋Vendor Advisories

4
Ubuntu
Linux kernel (HWE) vulnerabilities↗2019-04-02
▶
Ubuntu
Linux kernel vulnerabilities↗2019-04-02
▶
Red Hat
Kernel: SCTP: use-after-free while traversing list of endpoint associations↗2019-02-21
▶
Debian
CVE-2019-8956: linux - In the Linux Kernel before versions 4.20.8 and 4.19.21 a use-after-free error in...↗2019
▶

💬Community

2
Bugzilla
CVE-2019-8956 Kernel: SCTP: use-after-free while traversing list of endpoint associations↗2019-02-22
▶
Bugzilla
CVE-2019-8956 kernel: SCTP: use-after-free while traversing list of endpoint associations [fedora-all]↗2019-02-22
▶