kernel: Null pointer dereference in the flexcop_usb_probe function in the drivers/media/usb/b2c2/flexcop-usb.c
Published Aug 20, 2019
4.6
MEDIUMCVSS 3.0
EPSS 0.67%
Description
An issue was discovered in the Linux kernel through 5.2.9. There is a NULL pointer dereference caused by a malicious USB device in the flexcop_usb_probe function in the drivers/media/usb/b2c2/flexcop-usb.c driver.
Affected products
No data.
- ≤ 5.2.9
No data.
Red Hat Enterprise Linux 5
kernel
Not affected
Red Hat Enterprise Linux 6
kernel
Out of support scope
Red Hat Enterprise Linux 7
kernel
Fix deferred
Red Hat Enterprise Linux 7
kernel-alt
Fix deferred
Red Hat Enterprise Linux 7
kernel-rt
Fix deferred
Red Hat Enterprise Linux 8
kernel
Fix deferred
Red Hat Enterprise Linux 8
kernel-rt
Fix deferred
Red Hat Enterprise MRG 2
kernel-rt
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 6 | kernel | Out of support scope | n/a |
| Red Hat Enterprise Linux 7 | kernel | Fix deferred | n/a |
| Red Hat Enterprise Linux 7 | kernel-alt | Fix deferred | n/a |
| Red Hat Enterprise Linux 7 | kernel-rt | Fix deferred | n/a |
| Red Hat Enterprise Linux 8 | kernel | Fix deferred | n/a |
| Red Hat Enterprise Linux 8 | kernel-rt | Fix deferred | n/a |
| Red Hat Enterprise MRG 2 | kernel-rt | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat mitigation
As the b2c2-flexcop-usb module will be auto-loaded when required, its use can be disabled by preventing the module from loading with the following instructions: # echo "install b2c2-flexcop-usb /bin/true" >> /etc/modprobe.d/disable-b2c2-flexcop-usb.conf The system will need to be restarted if the b2c2-flexcop-usb module is already loaded. In most circumstances, the b2c2-flexcop-usb kernel module will be unable to be unloaded while the device is in use. If the system requires this module to work correctly, this mitigation may not be suitable. If you need further assistance, see KCS article https://access.redhat.com/solutions/41278 or contact Red Hat Global Support Services.
References (20)
- http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00036.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00037.html vendor-advisoryx_refsource_SUSE
- http://packetstormsecurity.com/files/155890/Slackware-Security-Advisory-Slackware-14.2-kernel-Updates.html x_refsource_MISC
- http://www.openwall.com/lists/oss-security/2019/08/20/2 mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2019/08/22/1 mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2019-15291 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1749978 Issue Tracking
- https://lists.debian.org/debian-lts-announce/2020/01/msg00013.html mailing-listx_refsource_MLIST
- https://lists.debian.org/debian-lts-announce/2020/03/msg00001.html mailing-listx_refsource_MLIST
- https://nvd.nist.gov/vuln/detail/CVE-2019-15291
- https://seclists.org/bugtraq/2020/Jan/10 mailing-listx_refsource_BUGTRAQ
- https://security.netapp.com/advisory/ntap-20190905-0002/ x_refsource_CONFIRM
- https://syzkaller.appspot.com/bug?id=c0203bd72037d07493f4b7562411e4f5f4553a8f x_refsource_MISCExploitThird Party Advisory
- https://usn.ubuntu.com/4254-1/ vendor-advisoryx_refsource_UBUNTU
- https://usn.ubuntu.com/4254-2/ vendor-advisoryx_refsource_UBUNTU
- https://usn.ubuntu.com/4258-1/ vendor-advisoryx_refsource_UBUNTU
- https://usn.ubuntu.com/4284-1/ vendor-advisoryx_refsource_UBUNTU
- https://usn.ubuntu.com/4287-1/ vendor-advisoryx_refsource_UBUNTU
- https://usn.ubuntu.com/4287-2/ vendor-advisoryx_refsource_UBUNTU
- https://www.cve.org/CVERecord?id=CVE-2019-15291
Change history (0)
No recorded changes yet.