New issue
Advanced search Search tips

Issue 811047 link

Starred by 1 user

Issue metadata

Status: WontFix
Owner:
Closed: Feb 2018
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Chrome
Pri: 1
Type: Bug-Security



Sign in to add a comment

CVE-2017-18075 CrOS: Vulnerability reported in Linux kernel

Project Member Reported by vomit.go...@appspot.gserviceaccount.com, Feb 10 2018

Issue description

VOMIT (go/vomit) has received an external vulnerability report for the Linux kernel. 

Advisory: CVE-2017-18075
  Details: http://vomit.googleplex.com/advisory?id=CVE/CVE-2017-18075
  CVSS severity score: 7.2/10.0
  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.



This bug was filed by http://go/vomit
Please contact us at vomit-team@google.com if you need any assistance.

 

Comment 1 by groeck@chromium.org, Feb 11 2018

Cc: groeck@chromium.org wonderfly@google.com
Labels: Security_Severity-High M-65 Security_Impact-Stable Pri-1
Owner: zsm@chromium.org
Status: Assigned (was: Untriaged)

Comment 2 by zsm@chromium.org, Feb 12 2018

The fix, d76c68109 ("crypto: pcrypt - fix freeing pcrypt instances") has been applied on v4.14, v4.4.

It needs to be applied for v3.18, v3.14, v3.10, v3.8

Comment 3 by zsm@chromium.org, Feb 12 2018

Correction: aead_instance_ctx has not been introduced into v3.18, v3.14, v3.10, v3.8 ; this bug can be closed.

Comment 4 by groeck@chromium.org, Feb 12 2018

Status: WontFix (was: Assigned)
Marking WontFix per #3.

Cc: adityakali@google.com

Sign in to add a comment