CVE-2017-18075
Last modified
CVE-2017-18075 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. crypto/pcrypt.c in the Linux kernel before 4.14.13 mishandles freeing instances, allowing a local user able to access the AF_ALG-based AEAD interface (CONFIG_CRYPTO_USER_API_AEAD) and pcrypt (CONFIG_CRYPTO_PCRYPT) to cause a denial of service (kfree of an incorrect pointer) or possibly have unspecified other impact by executing a crafted sequence of system calls.. EPSS estimates a 0.41% chance of exploitation in the next 30 days.
Description
crypto/pcrypt.c in the Linux kernel before 4.14.13 mishandles freeing instances, allowing a local user able to access the AF_ALG-based AEAD interface (CONFIG_CRYPTO_USER_API_AEAD) and pcrypt (CONFIG_CRYPTO_PCRYPT) to cause a denial of service (kfree of an incorrect pointer) or possibly have unspecified other impact by executing a crafted sequence of system calls.
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 4.2, < 4.4.111 |
| Linux | Linux Kernel | >= 4.5, < 4.9.76 |
| Linux | Linux Kernel | >= 4.10, < 4.14.13 |
| Canonical | Ubuntu Linux | 14.04 |
| Canonical | Ubuntu Linux | 16.04 |
References
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d76c68109f37cb85b243a1cf0f40313afd2bae68Issue Tracking, Patch, Third Party Advisory
- http://www.securityfocus.com/bid/102813Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2018:2948Third Party Advisory
- https://usn.ubuntu.com/3619-1/Third Party Advisory
- https://usn.ubuntu.com/3619-2/Third Party Advisory
- https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.13Issue Tracking, Release Notes, Vendor Advisory
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d76c68109f37cb85b243a1cf0f40313afd2bae68Issue Tracking, Patch, Third Party Advisory
- http://www.securityfocus.com/bid/102813Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2018:2948Third Party Advisory
- https://usn.ubuntu.com/3619-1/Third Party Advisory
- https://usn.ubuntu.com/3619-2/Third Party Advisory
- https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.13Issue Tracking, Release Notes, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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