Openwall GNU/*/Linux - a small security-enhanced Linux distro for servers
[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Date: Mon, 25 Jan 2016 01:41:33 -0500 (EST)
From: Wade Mealing <wmealing@...hat.com>
To: OSS Security List <oss-security@...ts.openwall.com>
Cc: cve-assign@...re.org
Subject: Linux kernel : Denial of service with specially crafted key file.

Gday,

I would like a CVE for the following issue:

An issue with ASN1.1 DER decoder was reported that a specially created key can lead to a kernel panic via x509 certificate DER signature parsing.

Vulnerable code:

...
int public_key_verify_signature(const struct public_key *pk,
                                const struct public_key_signature *sig)
{
        const struct public_key_algorithm *algo;

        BUG_ON(!pk);
        BUG_ON(!pk->mpi[0]);



An attacker could craft a BER file without a public key and panic the system.  

There is no patch upstream at the time of writing.

Reference:
https://bugzilla.redhat.com/show_bug.cgi?id=1300237

Powered by blists - more mailing lists

Your e-mail address:

Please check out the Open Source Software Security Wiki, which is counterpart to this mailing list.

Confused about mailing lists and their use? Read about mailing lists on Wikipedia and check out these guidelines on proper formatting of your messages.