Use After Free in Linux Kernel

CVE-2023-1859

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.

Vulnerability class: Use-After-Free

Published · last modified .

CVSS v3 metric

CVSS v3 base score 4.7 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.002 (6.6th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 7th percentile — 6.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2023-1859: held from 0.002 to 0.002.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000

Affected products

  • Linux Kernel — versions 6.3
  • Kernel — versions Kernel version prior to 6.3-rc7

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2023-1859?
CVE-2023-1859 is a medium-severity vulnerability in Linux Kernel, classified under Use After Free. CVSS score: 4.7/10. Published 2023-05-17.
How severe is CVE-2023-1859?
Medium severity. CVSS v3 base score is 4.7 out of 10.