CVE-2018-16840
Description
A heap use-after-free flaw was found in curl versions from 7.59.0 through 7.61.1 in the code related to closing an easy handle. When closing and cleaning up an 'easy' handle in the `Curl_close()` function, the library code first frees a struct (without nulling the pointer) and might then subsequently erroneously write to a struct field within that already freed struct.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
SUSE Affected 1 release
| Version | Status | Fixed in |
|---|---|---|
| — | Affected | — |
Arch Fixed 1 release
| Version | Status | Fixed in |
|---|---|---|
| — | Fixed | 7.62.0-1 |
Debian Fixed 5 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Fixed | 7.62.0-1 |
| sid | Fixed | 7.62.0-1 |
| forky | Fixed | 7.62.0-1 |
| bullseye | Fixed | 7.62.0-1 |
| bookworm | Fixed | 7.62.0-1 |
References
- https://security.archlinux.org/ASA-201811-5
- https://security.archlinux.org/ASA-201811-6
- https://security.archlinux.org/ASA-201811-7
- https://security.archlinux.org/ASA-201811-8
- https://security.archlinux.org/ASA-201811-9
- https://security.archlinux.org/ASA-201811-4
- https://www.suse.com/security/cve/CVE-2018-16840.html
- https://security-tracker.debian.org/tracker/CVE-2018-16840
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.