CVE-2018-25015 — An issue was discovered in the Linux kernel before 4

An issue was discovered in the Linux kernel before 4.14.16. There is a use-after-free in net/sctp/socket.c for a held lock after a peel off, aka CID-a0ff660058b8.

01What is this vulnerability?

An issue was discovered in the Linux kernel before 4.14.16. There is a use-after-free in net/sctp/socket.c for a held lock after a peel off, aka CID-a0ff660058b8.

02Affected products

Vendor	Product	Versions
n	a / n/a	n/a

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2021-06-07T19:20:39.000Z
• Last modified: 2024-08-05T12:26:39.594Z

09References

• syzkaller.appspot.com — https://syzkaller.appspot.com/bug?id=a8d38d1b68ffc744c53bd9b9fc1dbd6c86b1afe2
• sites.google.com — https://sites.google.com/view/syzscope/warning-held-lock-freed
• git.kernel.org — https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a0…
• cdn.kernel.org — https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.16
• security.netapp.com — https://security.netapp.com/advisory/ntap-20210720-0002/