Name: Vulnix
Price: 99 USD

Description

In the Linux kernel before 4.20.14, expand_downwards in mm/mmap.c lacks a check for the mmap minimum address, which makes it easier for attackers to exploit kernel NULL pointer dereferences on non-SMAP platforms. This is related to a capability check for the wrong task.

Metrics

CVSS 3.1 5.5/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-476

Affected software

Vendor	Product	Versions
n/a	n/a	n/a

References

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=0a1d52994d440e21def1c2174932410b4f2a98a1Patch, Vendor Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-03/msg00045.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00052.htmlMailing List, Third Party Advisory
http://packetstormsecurity.com/files/156053/Reliable-Datagram-Sockets-RDS-rds_atomic_free_op-Privilege-Escalation.htmlExploit, Third Party Advisory, VDB Entry
http://www.securityfocus.com/bid/107296Third Party Advisory, VDB Entry
https://access.redhat.com/errata/RHSA-2019:0831Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:1479Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:1480Third Party Advisory
https://bugs.chromium.org/p/project-zero/issues/detail?id=1792Exploit, Mailing List, Third Party Advisory
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.105Mailing List, Patch, Vendor Advisory
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.27Mailing List, Patch, Vendor Advisory
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.20.14Mailing List, Patch, Vendor Advisory
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.162Mailing List, Patch, Vendor Advisory
https://github.com/torvalds/linux/commit/0a1d52994d440e21def1c2174932410b4f2a98a1Mailing List, Patch, Vendor Advisory
https://lists.debian.org/debian-lts-announce/2019/03/msg00034.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/04/msg00004.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/05/msg00002.htmlMailing List, Third Party Advisory
https://usn.ubuntu.com/3930-1/Third Party Advisory
https://usn.ubuntu.com/3930-2/Third Party Advisory
https://usn.ubuntu.com/3931-1/Third Party Advisory
https://usn.ubuntu.com/3931-2/Third Party Advisory
https://usn.ubuntu.com/3932-1/Third Party Advisory
https://usn.ubuntu.com/3932-2/Third Party Advisory
https://usn.ubuntu.com/3933-1/Third Party Advisory
https://usn.ubuntu.com/3933-2/Third Party Advisory
https://www.exploit-db.com/exploits/46502/Exploit, Third Party Advisory, VDB Entry
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=0a1d52994d440e21def1c2174932410b4f2a98a1Patch, Vendor Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-03/msg00045.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00052.htmlMailing List, Third Party Advisory
http://packetstormsecurity.com/files/156053/Reliable-Datagram-Sockets-RDS-rds_atomic_free_op-Privilege-Escalation.htmlExploit, Third Party Advisory, VDB Entry
http://www.securityfocus.com/bid/107296Third Party Advisory, VDB Entry
https://access.redhat.com/errata/RHSA-2019:0831Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:1479Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:1480Third Party Advisory
https://bugs.chromium.org/p/project-zero/issues/detail?id=1792Exploit, Mailing List, Third Party Advisory
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.105Mailing List, Patch, Vendor Advisory
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.27Mailing List, Patch, Vendor Advisory
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.20.14Mailing List, Patch, Vendor Advisory
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.162Mailing List, Patch, Vendor Advisory
https://github.com/torvalds/linux/commit/0a1d52994d440e21def1c2174932410b4f2a98a1Mailing List, Patch, Vendor Advisory
https://lists.debian.org/debian-lts-announce/2019/03/msg00034.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/04/msg00004.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/05/msg00002.htmlMailing List, Third Party Advisory
https://usn.ubuntu.com/3930-1/Third Party Advisory
https://usn.ubuntu.com/3930-2/Third Party Advisory
https://usn.ubuntu.com/3931-1/Third Party Advisory
https://usn.ubuntu.com/3931-2/Third Party Advisory
https://usn.ubuntu.com/3932-1/Third Party Advisory
https://usn.ubuntu.com/3932-2/Third Party Advisory
https://usn.ubuntu.com/3933-1/Third Party Advisory
https://usn.ubuntu.com/3933-2/Third Party Advisory
https://www.exploit-db.com/exploits/46502/Exploit, Third Party Advisory, VDB Entry

Timeline

Published: Mar 5, 2019
Last modified: Jun 17, 2026
NVD status: Modified

CVE-2019-9213