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CVE-2023-1859

Published: 10 April 2023

A use-after-free flaw was found in xen_9pfs_front_removet in net/9p/trans_xen.c in Xen transport for 9pfs in the Linux Kernel. This flaw could allow a local attacker to crash the system due to a race problem, possibly leading to a kernel information leak.

From the Ubuntu Security Team

It was discovered that a race condition existed in the Xen transport layer implementation for the 9P file system protocol in the Linux kernel, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service (guest crash) or expose sensitive information (guest kernel memory).

Priority

Medium

Cvss 3 Severity Score

4.7

Score breakdown

Status

Package Release Status
linux-ibm
Launchpad, Ubuntu, Debian
xenial Does not exist

bionic Does not exist

trusty Does not exist

focal Needed

jammy Needed

kinetic Needed

upstream Pending

lunar Needed

linux-ibm-5.4
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

focal Does not exist

jammy Does not exist

kinetic Does not exist

upstream Pending

lunar Does not exist

bionic Ignored
(end of standard support, was needed)
linux-intel-5.13
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

jammy Does not exist

kinetic Does not exist

focal Ignored
(was needs-triage now end-of-life)
upstream Pending

lunar Does not exist

linux-intel-iotg
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

focal Does not exist

kinetic Does not exist

jammy Needed

upstream Pending

lunar Does not exist

linux-intel-iotg-5.15
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

jammy Does not exist

kinetic Does not exist

focal Needed

upstream Pending

lunar Does not exist

linux-lowlatency
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

focal Does not exist

jammy Needed

kinetic Needed

upstream Pending

lunar Needed

linux-lowlatency-hwe-5.15
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

jammy Does not exist

kinetic Does not exist

focal Needed

upstream Pending

lunar Does not exist

linux
Launchpad, Ubuntu, Debian
trusty Not vulnerable
(3.11.0-12.19)
xenial Not vulnerable
(4.4.0-2.16)
bionic Needed

focal Needed

jammy Needed

kinetic Needed

upstream Pending

lunar Needed

Patches:
Introduced by

71ebd71921e451f0f942ddfe85d01e31ddc6eb88

Fixed by ea4f1009408efb4989a0f139b70fb338e7f687d0
linux-hwe
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Ignored
(was needed ESM criteria)
bionic Ignored
(replaced by linux-hwe-5.4)
focal Does not exist

jammy Does not exist

kinetic Does not exist

upstream Pending

lunar Does not exist

linux-hwe-5.4
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Needed

focal Does not exist

jammy Does not exist

kinetic Does not exist

upstream Pending

lunar Does not exist

linux-hwe-5.8
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

focal Ignored
(superseded by linux-hwe-5.11)
jammy Does not exist

kinetic Does not exist

upstream Ignored
(superseded by linux-hwe-5.11)
lunar Does not exist

linux-hwe-5.11
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

focal Ignored
(superseded by linux-hwe-5.13)
jammy Does not exist

kinetic Does not exist

upstream Ignored
(superseded by linux-hwe-5.13)
lunar Does not exist

linux-hwe-5.13
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

focal Ignored
(superseded by linux-hwe-5.15)
jammy Does not exist

kinetic Does not exist

upstream Ignored
(superseded by linux-hwe-5.15)
lunar Does not exist

linux-hwe-5.15
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

focal Needed

jammy Does not exist

kinetic Does not exist

upstream Pending

lunar Does not exist

linux-hwe-5.19
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

focal Does not exist

kinetic Does not exist

jammy Needed

upstream Pending

lunar Does not exist

linux-hwe-edge
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Ignored
(superseded by linux-hwe)
bionic Ignored
(superseded by linux-hwe-5.4)
focal Does not exist

jammy Does not exist

kinetic Does not exist

upstream Pending

lunar Does not exist

linux-lts-xenial
Launchpad, Ubuntu, Debian
xenial Does not exist

bionic Does not exist

focal Does not exist

jammy Does not exist

kinetic Does not exist

trusty Not vulnerable
(4.4.0-13.29~14.04.1)
upstream Pending

lunar Does not exist

linux-kvm
Launchpad, Ubuntu, Debian
trusty Does not exist

bionic Needed

focal Needed

jammy Needed

kinetic Needed

upstream Pending

xenial Not vulnerable
(4.4.0-1004.9)
lunar Needed

linux-aws-5.0
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Ignored
(superseded by linux-aws-5.3)
focal Does not exist

jammy Does not exist

kinetic Does not exist

upstream Pending

lunar Does not exist

linux-aws-5.3
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Ignored
(superseded by linux-aws-5.4)
focal Does not exist

jammy Does not exist

kinetic Does not exist

upstream Ignored
(superseded by linux-aws-5.4)
lunar Does not exist

linux-aws-5.4
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

focal Does not exist

jammy Does not exist

kinetic Does not exist

bionic Needed

upstream Pending

lunar Does not exist

linux-aws-5.8
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

focal Ignored
(superseded by linux-aws-5.11)
jammy Does not exist

kinetic Does not exist

upstream Ignored
(superseded by linux-aws-5.11)
lunar Does not exist

linux-aws-5.11
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

focal Ignored
(superseded by linux-aws-5.13)
jammy Does not exist

kinetic Does not exist

upstream Ignored
(superseded by linux-aws-5.13)
lunar Does not exist

linux-aws-5.13
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

focal Ignored
(superseded by linux-aws-5.15)
jammy Does not exist

kinetic Does not exist

upstream Ignored
(superseded by linux-aws-5.15)
lunar Does not exist

linux-aws-5.15
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

jammy Does not exist

kinetic Does not exist

focal Needed

upstream Pending

lunar Does not exist

linux-aws-hwe
Launchpad, Ubuntu, Debian
trusty Does not exist

bionic Does not exist

focal Does not exist

jammy Does not exist

kinetic Does not exist

upstream Pending

xenial Ignored
(was needed ESM criteria)
lunar Does not exist

linux-azure
Launchpad, Ubuntu, Debian
bionic Ignored
(superseded by linux-azure-5.3)
focal Needed

jammy Needed

kinetic Needed

trusty Ignored
(was needed ESM criteria)
upstream Pending

xenial Ignored
(was needed ESM criteria)
lunar Needed

linux-azure-4.15
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

focal Does not exist

jammy Does not exist

kinetic Does not exist

bionic Needed

upstream Pending

lunar Does not exist

linux-azure-5.3
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Ignored
(superseded by linux-azure-5.4)
focal Does not exist

jammy Does not exist

kinetic Does not exist

upstream Ignored
(superseded by linux-azure-5.4)
lunar Does not exist

linux-azure-5.4
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

focal Does not exist

jammy Does not exist

kinetic Does not exist

bionic Needed

upstream Pending

lunar Does not exist

linux-azure-5.8
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

focal Ignored
(superseded by linux-azure-5.11)
jammy Does not exist

kinetic Does not exist

upstream Ignored
(superseded by linux-azure-5.11)
lunar Does not exist

linux-azure-5.11
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

focal Ignored
(superseded by linux-azure-5.13)
jammy Does not exist

kinetic Does not exist

upstream Ignored
(superseded by linux-azure-5.13)
lunar Does not exist

linux-azure-5.13
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

focal Ignored
(superseded by linux-azure-5.15)
jammy Does not exist

kinetic Does not exist

upstream Ignored
(superseded by linux-azure-5.15)
lunar Does not exist

linux-azure-5.15
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

jammy Does not exist

kinetic Does not exist

focal Needed

upstream Pending

lunar Does not exist

linux-azure-5.19
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

focal Does not exist

kinetic Does not exist

jammy Needed

upstream Pending

lunar Does not exist

linux-azure-fde
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

kinetic Does not exist

focal Needed

jammy Needed

upstream Pending

lunar Does not exist

linux-azure-fde-5.15
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

jammy Does not exist

kinetic Does not exist

focal Needed

upstream Pending

lunar Does not exist

linux-bluefield
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

kinetic Does not exist

focal Needed

jammy Needed

upstream Pending

lunar Does not exist

linux-dell300x
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

focal Does not exist

jammy Does not exist

kinetic Does not exist

bionic Needs triage

upstream Pending

lunar Does not exist

linux-azure-edge
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Ignored
(superseded by linux-azure-5.3)
focal Does not exist

jammy Does not exist

kinetic Does not exist

upstream Pending

lunar Does not exist

linux-fips
Launchpad, Ubuntu, Debian
trusty Ignored
(out of standard support)
xenial Ignored
(out of standard support)
bionic Does not exist

focal Does not exist

jammy Does not exist

kinetic Does not exist

upstream Pending

lunar Does not exist

linux-gcp
Launchpad, Ubuntu, Debian
trusty Does not exist

bionic Ignored
(superseded by linux-gcp-5.3)
focal Needed

jammy Needed

kinetic Needed

upstream Pending

xenial Ignored
(was needed ESM criteria)
lunar Needed

linux-gcp-4.15
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

focal Does not exist

jammy Does not exist

kinetic Does not exist

bionic Needed

upstream Pending

lunar Does not exist

linux-gcp-5.3
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Ignored
(superseded by linux-gcp-5.4)
focal Does not exist

jammy Does not exist

kinetic Does not exist

upstream Ignored
(superseded by linux-gcp-5.4)
lunar Does not exist

linux-gcp-5.4
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

focal Does not exist

jammy Does not exist

kinetic Does not exist

bionic Needed

upstream Pending

lunar Does not exist

linux-gcp-5.8
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

focal Ignored
(superseded by linux-gcp-5.11)
jammy Does not exist

kinetic Does not exist

upstream Ignored
(superseded by linux-gcp-5.11)
lunar Does not exist

linux-gcp-5.11
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

focal Ignored
(superseded by linux-gcp-5.13)
jammy Does not exist

kinetic Does not exist

upstream Ignored
(superseded by linux-gcp-5.13)
lunar Does not exist

linux-gcp-5.13
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

focal Ignored
(superseded by linux-gcp-5.15)
jammy Does not exist

kinetic Does not exist

upstream Ignored
(superseded by linux-gcp-5.15)
lunar Does not exist

linux-gcp-5.15
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

jammy Does not exist

kinetic Does not exist

focal Needed

upstream Pending

lunar Does not exist

linux-gke
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Ignored
(reached end of standard support)
bionic Does not exist

kinetic Does not exist

focal Needed

jammy Needed

upstream Pending

lunar Does not exist

linux-gke-4.15
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

focal Does not exist

jammy Does not exist

kinetic Does not exist

bionic Ignored
(was needs-triage now end-of-life)
upstream Pending

lunar Does not exist

linux-gke-5.0
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Ignored
(superseded by linux-gke-5.3)
focal Does not exist

jammy Does not exist

kinetic Does not exist

upstream Pending

lunar Does not exist

linux-gke-5.3
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Ignored
(superseded by linux-gke-5.4)
focal Does not exist

jammy Does not exist

kinetic Does not exist

upstream Ignored
(superseded by linux-gke-5.4)
lunar Does not exist

linux-gke-5.4
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

focal Does not exist

jammy Does not exist

kinetic Does not exist

bionic Ignored
(was needs-triage now end-of-life)
upstream Pending

lunar Does not exist

linux-gke-5.15
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

jammy Does not exist

kinetic Does not exist

focal Needed

upstream Pending

lunar Does not exist

linux-gkeop
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

kinetic Does not exist

focal Needed

jammy Needed

upstream Pending

lunar Does not exist

linux-gkeop-5.4
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

focal Does not exist

jammy Does not exist

kinetic Does not exist

bionic Ignored
(was needs-triage now end-of-life)
upstream Pending

lunar Does not exist

linux-lowlatency-hwe-5.19
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

focal Does not exist

kinetic Does not exist

jammy Needed

upstream Pending

lunar Does not exist

linux-oracle
Launchpad, Ubuntu, Debian
trusty Does not exist

bionic Needed

focal Needed

jammy Needed

kinetic Needed

upstream Pending

xenial Ignored
(was needed ESM criteria)
lunar Needed

linux-oracle-5.0
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Ignored
(superseded by linux-oracle-5.3)
focal Does not exist

jammy Does not exist

kinetic Does not exist

upstream Pending

lunar Does not exist

linux-oracle-5.3
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Ignored
(superseded by linux-oracle-5.4)
focal Does not exist

jammy Does not exist

kinetic Does not exist

upstream Ignored
(superseded by linux-oracle-5.4)
lunar Does not exist

linux-oracle-5.4
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

focal Does not exist

jammy Does not exist

kinetic Does not exist

bionic Needed

upstream Pending

lunar Does not exist

linux-oracle-5.8
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

focal Ignored
(superseded by linux-oracle-5.11)
jammy Does not exist

kinetic Does not exist

upstream Ignored
(superseded by linux-oracle-5.11)
lunar Does not exist

linux-oracle-5.11
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

focal Ignored
(superseded by linux-oracle-5.13)
jammy Does not exist

kinetic Does not exist

upstream Ignored
(superseded by linux-oracle-5.13)
lunar Does not exist

linux-oracle-5.13
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

jammy Does not exist

kinetic Does not exist

focal Ignored
(was needs-triage now end-of-life)
upstream Pending

lunar Does not exist

linux-oracle-5.15
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

jammy Does not exist

kinetic Does not exist

focal Needed

upstream Pending

lunar Does not exist

linux-oem
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Ignored
(superseded by linux-hwe)
focal Does not exist

jammy Does not exist

kinetic Does not exist

bionic Ignored
(was needs-triage now end-of-life)
upstream Pending

lunar Does not exist

linux-oem-5.6
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

jammy Does not exist

kinetic Does not exist

focal Ignored
(was needs-triage now end-of-life)
upstream Pending

lunar Does not exist

linux-oem-5.10
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

jammy Does not exist

kinetic Does not exist

focal Ignored
(was needs-triage now end-of-life)
upstream Pending

lunar Does not exist

linux-oem-5.13
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

focal Ignored
(superseded by linux-oem-5.14)
jammy Does not exist

kinetic Does not exist

upstream Ignored
(superseded by linux-oem-5.14)
lunar Does not exist

linux-oem-5.14
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

jammy Does not exist

kinetic Does not exist

focal Ignored
(was needed now end-of-life)
upstream Pending

lunar Does not exist

linux-oem-5.17
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

focal Does not exist

jammy
Released (5.17.0-1031.32)
kinetic Ignored
(was needs-triage now end-of-life)
upstream Pending

lunar Does not exist

linux-oem-6.0
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

focal Does not exist

kinetic Does not exist

upstream Pending

lunar Does not exist

jammy
Released (6.0.0-1015.15)
linux-oem-6.1
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

focal Does not exist

kinetic Does not exist

upstream Pending

lunar Does not exist

jammy
Released (6.1.0-1010.10)
linux-oem-osp1
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

focal Does not exist

jammy Does not exist

kinetic Does not exist

bionic Ignored
(was needs-triage now end-of-life)
upstream Pending

lunar Does not exist

linux-raspi
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

focal Needed

jammy Needed

kinetic Needed

upstream Pending

lunar Needed

linux-raspi2
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Ignored
(end of standard support)
focal Ignored
(replaced by linux-raspi)
jammy Does not exist

kinetic Does not exist

upstream Pending

lunar Does not exist

bionic Needs triage

linux-raspi2-5.3
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Ignored
(superseded by linux-raspi-5.4)
focal Does not exist

jammy Does not exist

kinetic Does not exist

upstream Ignored
(superseded by linux-raspi2-5.4)
lunar Does not exist

linux-raspi-5.4
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

focal Does not exist

jammy Does not exist

kinetic Does not exist

bionic Needs triage

upstream Pending

lunar Does not exist

linux-riscv
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

focal Ignored
(superseded by linux-riscv-5.8)
jammy Ignored
(was needs-triage now end-of-life)
kinetic Needed

upstream Pending

lunar Needed

linux-riscv-5.8
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

focal Ignored
(superseded by linux-riscv-5.11)
jammy Does not exist

kinetic Does not exist

upstream Ignored
(superseded by linux-riscv-5.11)
lunar Does not exist

linux-riscv-5.11
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

focal Ignored
(superseded by linux-riscv-5.13)
jammy Does not exist

kinetic Does not exist

upstream Ignored
(superseded by linux-riscv-5.13)
lunar Does not exist

linux-snapdragon
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Ignored
(end of standard support)
focal Does not exist

jammy Does not exist

kinetic Does not exist

bionic Needed

upstream Pending

lunar Does not exist

linux-aws
Launchpad, Ubuntu, Debian
bionic Needed

focal Needed

jammy Needed

kinetic Needed

trusty Not vulnerable
(4.4.0-1002.2)
upstream Pending

xenial Not vulnerable
(4.4.0-1001.10)
lunar Needed

linux-iot
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

focal Needed

jammy Does not exist

kinetic Does not exist

lunar Does not exist

upstream Needs triage

linux-riscv-5.15
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

focal Needed

jammy Does not exist

kinetic Does not exist

lunar Does not exist

upstream Needs triage

linux-azure-fde-5.19
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

focal Does not exist

jammy Needed

kinetic Does not exist

lunar Does not exist

upstream Needs triage

linux-xilinx-zynqmp
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

focal Needed

jammy Does not exist

kinetic Does not exist

lunar Does not exist

upstream Needs triage

Severity score breakdown

Parameter Value
Base score 4.7
Attack vector Local
Attack complexity High
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H