7.3

CVE-2024-45817: x86: Deadlock in vlapic_error()

Analyzed
AliasesALPINE-CVE-2024-45817SUSE-SU-2024:3421-1SUSE-SU-2024:3422-1
Published 25-09-2024Last modified 20-11-2024

Vulnerability summary

CVE-2024-45817 is a high (CVSS 7.3) vulnerability in xen. EPSS estimates a 0.54% chance of exploitation in the next 30 days, higher than 45.7% of scored vulnerabilities.

Priority
Prioritisesevere

Severe, CVSS 7.3 (CVE.org); no exploitation reported by the 5 checked sources; EPSS 1% (FIRST, 03-11-2026)

Source freshness unavailable

How is this decided?
CVSS score
7.3/10
010
High · v3.1 (CVE.org)
EPSS score
0.54%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 7 · Related 5
DSA-5836-1MGASA-2025-0270SUSE-SU-2024:3423-1SUSE-SU-2024:3586-1SUSE-SU-2024:3980-1SUSE-SU-2024:4073-1

Timeline

  1. 25-09-2024
    PublishedVulnerability first disclosed.
  2. 20-11-2024
    Last modifiedVulnerability information updated.

Description

In x86's APIC (Advanced Programmable Interrupt Controller) architecture, error conditions are reported in a status register. Furthermore, the OS can opt to receive an interrupt when a new error occurs. It is possible to configure the error interrupt with an illegal vector, which generates an error when an error interrupt is raised. This case causes Xen to recurse through vlapic_error(). The recursion itself is bounded; errors accumulate in the the status register and only generate an interrupt when a new status bit becomes set. However, the lock protecting this state in Xen will try to be taken recursively, and deadlock.

CVSS metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

0.54%

Chance of exploitation in the next 30 days

Percentile

46%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.54% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Suse10 products
  • xen&distro=SUSE Linux Enterprise Micro 5.1< 4.14.6_20-150300.3.81.1
  • xen&distro=SUSE Linux Enterprise Micro 5.2< 4.14.6_20-150300.3.81.1
  • xen&distro=SUSE Linux Enterprise Micro 5.5< 4.17.5_04-150500.3.39.1
  • xen&distro=SUSE Linux Enterprise Module for Basesystem 15 SP5< 4.17.5_04-150500.3.39.1
  • xen&distro=SUSE Linux Enterprise Module for Basesystem 15 SP6< 4.18.3_04-150600.3.9.1
Opensuse4 products
  • xen&distro=openSUSE Leap 15.5< 4.17.5_04-150500.3.39.1
  • xen&distro=openSUSE Leap 15.6< 4.18.3_04-150600.3.9.1
  • xen&distro=openSUSE Leap Micro 5.5< 4.17.5_04-150500.3.39.1
  • xen&distro=openSUSE Tumbleweed< 4.19.0_04-1.1
Alpine1 product
  • xen≥ 4.5.0, < 4.16.6-r2 | ≥ 4.5.0, < 4.17.5-r1 | ≥ 4.5.0, < 4.18.3-r0 | ≥ 4.5.0, < 4.19.0-r0
Debian1 product
  • xen< 4.17.5+23-ga4e5191dc0-1 | < 4.19.1-1
Ubuntu1 product
  • xenAll versions (No fix recorded)
Xen1 product
  • xen≥ 4.5.0 (No fix recorded)

6 vendors · 18 products

References

15 links
Show all 15 references