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.
Fix
Patch, vendor advisory and mitigation references on NVD 4
- https://syzkaller-ppc64.appspot.com/bug?id=1c09906c83a8ea811a9e318c2a4f8e243becc6f8 Patch, Third Party Advisory
- https://syzkaller-ppc64.appspot.com/bug?id=b05b4d005191cc375cdf848c3d4d980308d50531 Patch, Third Party Advisory
- https://syzkaller-ppc64.appspot.com/bug?id=1c09906c83a8ea811a9e318c2a4f8e243becc6f8 Patch, Third Party Advisory
- https://syzkaller-ppc64.appspot.com/bug?id=b05b4d005191cc375cdf848c3d4d980308d50531 Patch, Third Party Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 5.5 · linux, netapp, canonicalNVD modified 2026-10-08 21:17
Affected (CPE criteria) 15
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*cpe:2.3:a:netapp:active_iq_unified_manager:*:*:*:*:*:vmware_vsphere:*:*cpe:2.3:a:netapp:hci_management_node:-:*:*:*:*:*:*:*cpe:2.3:a:netapp:solidfire:-:*:*:*:*:*:*:*cpe:2.3:h:netapp:hci_compute_node:-:*:*:*:*:*:*:*cpe:2.3:h:netapp:hci_storage_node:-:*:*:*:*:*:*:*cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:*cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
References 30
- http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00022.html Mailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00008.html Mailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/06/msg00012.html Mailing List, Third Party Advisory
- https://lore.kernel.org/lkml/20191129013745.7168-1-dja%40axtens.net/
- https://security.netapp.com/advisory/ntap-20210129-0004/ Third Party Advisory
- https://syzkaller-ppc64.appspot.com/bug?id=1c09906c83a8ea811a9e318c2a4f8e243becc6f8 Patch, Third Party Advisory
- https://syzkaller-ppc64.appspot.com/bug?id=b05b4d005191cc375cdf848c3d4d980308d50531 Patch, Third Party Advisory
- https://syzkaller.appspot.com/bug?id=e4265490d26d6c01cd9bc79dc915ef0a1bf15046 Third Party Advisory
- https://syzkaller.appspot.com/bug?id=f4d1cb4330bd3ddf4a628332b4285407b2eedd7b Third Party Advisory
- https://usn.ubuntu.com/4414-1/ Third Party Advisory
- https://usn.ubuntu.com/4425-1/ Third Party Advisory
- https://usn.ubuntu.com/4439-1/ Third Party Advisory
- https://usn.ubuntu.com/4440-1/ Third Party Advisory
- https://www.debian.org/security/2020/dsa-4698 Third Party Advisory
- https://www.debian.org/security/2020/dsa-4699 Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00022.html Mailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00008.html Mailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/06/msg00012.html Mailing List, Third Party Advisory
- https://lore.kernel.org/lkml/20191129013745.7168-1-dja%40axtens.net/
- https://security.netapp.com/advisory/ntap-20210129-0004/ Third Party Advisory
- https://syzkaller-ppc64.appspot.com/bug?id=1c09906c83a8ea811a9e318c2a4f8e243becc6f8 Patch, Third Party Advisory
- https://syzkaller-ppc64.appspot.com/bug?id=b05b4d005191cc375cdf848c3d4d980308d50531 Patch, Third Party Advisory
- https://syzkaller.appspot.com/bug?id=e4265490d26d6c01cd9bc79dc915ef0a1bf15046 Third Party Advisory
- https://syzkaller.appspot.com/bug?id=f4d1cb4330bd3ddf4a628332b4285407b2eedd7b Third Party Advisory
- https://usn.ubuntu.com/4414-1/ Third Party Advisory
- https://usn.ubuntu.com/4425-1/ Third Party Advisory
- https://usn.ubuntu.com/4439-1/ Third Party Advisory
- https://usn.ubuntu.com/4440-1/ Third Party Advisory
- https://www.debian.org/security/2020/dsa-4698 Third Party Advisory
- https://www.debian.org/security/2020/dsa-4699 Third Party Advisory