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Fencer Intel
high 7.5

CVE-2024-31142 in the critical feed json

x86: Incorrect logic for BTC/SRSO mitigations

published 2y ago modified 4mo ago also EUVD-2024-29052

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
17.4%
EPSS 17.4% chance of exploitation in 30 days, percentile 97%
public exploits
0
none known

Summary

Because of a logical error in XSA-407 (Branch Type Confusion), the mitigation is not applied properly when it is intended to be used. XSA-434 (Speculative Return Stack Overflow) uses the same infrastructure, so is equally impacted.

For more details, see: https://xenbits.xen.org/xsa/advisory-407.html https://xenbits.xen.org/xsa/advisory-434.html

Patch / fix

  • xen xen 4.15.6, 4.16.6, 4.17.4, 4.18.2
  • xen Debian 12 4.17.5+23-ga4e5191dc0-1
  • xen Debian 14, Debian 13 4.19.1-1

debian advisories DEBIAN-CVE-2024-31142

  • xen SLES for SAP 12 SP5, SLES 12 SP5, SLE Software Development Kit 12 SP5 4.12.4_48-3.109.1
  • xen SLE Micro 5.2, SLE Micro 5.1 4.14.6_14-150300.3.72.1
  • xen SLE Module for Server Applications 15 SP5, SLE Module for Basesystem 15 SP5, SLE Micro 5.5 +1 more 4.17.4_02-150500.3.30.1
  • xen SLE Micro 5.4, SLE Micro 5.3, openSUSE Leap Micro 5.4 +1 more 4.16.6_02-150400.4.55.1
  • xen SLES for SAP 15 SP2, SLES 15 SP2-LTSS, SLE High Performance Computing 15 SP2-LTSS 4.13.5_12-150200.3.93.1

suse advisories SUSE-SU-2024:2535-1SUSE-SU-2024:1541-1SUSE-SU-2024:1540-1SUSE-SU-2024:1295-1SUSE-SU-2024:1259-1

  • xen openSUSE Tumbleweed 4.18.2_02-1.1

opensuse advisories openSUSE-SU-2024:13853-1

  • xen Alpine 3.17, Alpine 3.16 4.16.6-r0
  • xen Alpine 3.18 4.17.4-r0
  • xen Alpine 3.24, Alpine 3.23, Alpine 3.22 +3 more 4.18.2-r0

alpine advisories ALPINE-CVE-2024-31142

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Is CVE-2024-31142 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2024-31142 updated cvss 5.1

xen: Incomplete fix for XSA-407 and XSA-434

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
2y ago

Exploit prediction

17.44% chance of exploitation in the next 30 days, higher than 97% of all scored CVEs (FIRST EPSS, 2026-11-11).

CVSS scores

assigned by version score vector
CISA ADP 3.1 7.5 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

  • Xen Xen

Classification

Weakness
  • CWE-693 Protection Mechanism Failure

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.