CVE-2017-18075
HIGH severity · CVSS 7.8 · CWE-763
7.8CVSS HIGH
Summary
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.
Impact & exploitability
Attack vectorLocal
Attack complexityLow
Privileges requiredLow
User interactionNone
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
Exploit probability (EPSS)0%
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products we track (1)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Official patch: http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d76c68109f37cb85b243a1cf0f40313afd2bae68 ↗
Additional information
- NVD record
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d76c68109f37cb85b243a1cf0f40313afd2bae68Patch
- https://github.com/torvalds/linux/commit/d76c68109f37cb85b243a1cf0f40313afd2bae68Patch
- https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.13Advisory
- http://www.securityfocus.com/bid/102813Advisory
- https://access.redhat.com/errata/RHSA-2018:2948Advisory
- https://usn.ubuntu.com/3619-1/Advisory
- https://usn.ubuntu.com/3619-2/Advisory