PT-2021-8846 · Linux+1 · Linux Kernel+1

Syzbot · Published 2018-02-01 · Updated 2021-12-01 · CVE-2018-25015

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV: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 4.14.16

Description An issue was discovered in the Linux kernel. There is a use-after-free in net/sctp/socket.c for a held lock after a peel off.

Recommendations For Linux kernel versions prior to 4.14.16, update to version 4.14.16 or later to resolve the issue. As a temporary workaround, consider restricting access to the net/sctp/socket.c module to minimize the risk of exploitation.

Exploit

Fix

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

ALT-PU-2018-1111

ALT-PU-2018-1991

CVE-2018-25015

Affected Products

Alt Linux

Linux Kernel

References · 16

• 🔥 https://syzkaller.appspot.com/bug?id=a8d38d1b68ffc744c53bd9b9fc1dbd6c86b1afe2 · Exploit
• 🔥 https://sites.google.com/view/syzscope/warning-held-lock-freed · Exploit
• https://ubuntu.com/security/CVE-2018-25015 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2018-25015 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2018-25015 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2018-25015 · Security Note
• https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.16 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2018-25015 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2018-25015 · Vendor Advisory
• https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a0ff660058b88d12625a783ce9e5c1371c87951f · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2018-25015 · Security Note
• https://t.me/cvenotify/15787 · Telegram Post
• https://t.me/cvenotify/15759 · Telegram Post
• https://git.kernel.org/linus/a0ff660058b88d12625a783ce9e5c1371c87951f · Note
• https://security.netapp.com/advisory/ntap-20210720-0002 · Note