kernel: NULL pointer dereference in relay_open in kernel/relay.c
Published Nov 30, 2019
5.5
MEDIUMCVSS 3.1
EPSS 0.46%
Description
relay_open in kernel/relay.c in the Linux kernel through 5.4.1 allows local users to cause a denial of service (such as relay blockage) by triggering a NULL alloc_percpu result.
Affected products
No data.
Configuration 1
- ≤ 5.4.1
Configuration 2
- ≥ 9.5
- n/a
- n/a
- n/a
- n/a
Configuration 3
- 14.04
- 16.04
- 18.04
- 20.04
Configuration 5
- 8.0
- 9.0
- 10.0
No data.
Red Hat Enterprise Linux 5
kernel
Not affected
Red Hat Enterprise Linux 6
kernel
Not affected
Red Hat Enterprise Linux 7
kernel
Not affected
Red Hat Enterprise Linux 7
kernel-alt
Fix deferred
Red Hat Enterprise Linux 7
kernel-rt
Not affected
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 | Not affected | n/a |
| Red Hat Enterprise Linux 7 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 7 | kernel-alt | Fix deferred | n/a |
| Red Hat Enterprise Linux 7 | kernel-rt | Not affected | 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
Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
References (19)
- http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00022.html vendor-advisoryx_refsource_SUSEMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00008.html vendor-advisoryx_refsource_SUSEMailing ListThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2019-19462 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1781839 Issue Tracking
- https://lists.debian.org/debian-lts-announce/2020/06/msg00012.html mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- https://lore.kernel.org/lkml/20191129013745.7168-1-dja%40axtens.net/ x_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2019-19462
- https://security.netapp.com/advisory/ntap-20210129-0004/ x_refsource_CONFIRMThird Party Advisory
- https://syzkaller-ppc64.appspot.com/bug?id=1c09906c83a8ea811a9e318c2a4f8e243becc6f8 x_refsource_MISCPatchThird Party Advisory
- https://syzkaller-ppc64.appspot.com/bug?id=b05b4d005191cc375cdf848c3d4d980308d50531 x_refsource_MISCPatchThird Party Advisory
- https://syzkaller.appspot.com/bug?id=e4265490d26d6c01cd9bc79dc915ef0a1bf15046 x_refsource_MISCThird Party Advisory
- https://syzkaller.appspot.com/bug?id=f4d1cb4330bd3ddf4a628332b4285407b2eedd7b x_refsource_MISCThird Party Advisory
- https://usn.ubuntu.com/4414-1/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://usn.ubuntu.com/4425-1/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://usn.ubuntu.com/4439-1/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://usn.ubuntu.com/4440-1/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2019-19462
- https://www.debian.org/security/2020/dsa-4698 vendor-advisoryx_refsource_DEBIANThird Party Advisory
- https://www.debian.org/security/2020/dsa-4699 vendor-advisoryx_refsource_DEBIANThird Party Advisory
Change history (0)
No recorded changes yet.