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TI-2022-24317 Aliases CVE-2022-48793GHSA-p5hp-9793-2w9c

KVM: x86: nSVM: fix potential NULL derefernce on nested migration

Priority LOW 24CWE-476Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Partial Red Hat: 3 fixed, 2 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-476.

Summary

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: nSVM: fix potential NULL derefernce on nested migration Turns out that due to review feedback and/or rebases I accidentally moved the call to nested_svm_load_cr3 to be too early, before the NPT is enabled, which is very wrong to do. KVM can't even access guest memory at that point as nested NPT is needed for that, and of course it won't initialize the walk_mmu, which is main issue the patch was addressing. Fix this for real.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00241 15th percentileScored 2026-11-07
Fix Partial Linux (Linux): 5.15.25, 5.16.11, 5.17Red Hat: 1 advisoryRed Hat: 3 fixed, 2 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
LinuxLinux5.13 and later5.15.25, 5.16.11, 5.17Patch availableCNA
  • Linux VendorLinux Affected 5.13 and later Fixed in 5.15.25, 5.16.11, 5.17 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*5.13 to before 5.15.25; 5.16 to before 5.16.11VulnerableLinux
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 5.13 to before 5.15.25; 5.16 to before 5.16.11 Vulnerable ·Linux

Remediation

  • Fix · CNA Linux (Linux) Fixed in 5.15.25, 5.16.11, 5.17

Red Hat 1 advisory

  • RHSA-2024:5692 Released 2024-08-21 · Red Hat rating Moderate
    kernel security update
    • Red Hat Enterprise Linux BaseOS AUS (v.8.6) bpftool-4.18.0-372.119.1.el8_6, kernel-4.18.0-372.119.1.el8_6, kernel-abi-stablelists-4.18.0-372.119.1.el8_6 +13
    • Red Hat Enterprise Linux BaseOS E4S (v.8.6) bpftool-4.18.0-372.119.1.el8_6, kernel-4.18.0-372.119.1.el8_6, kernel-abi-stablelists-4.18.0-372.119.1.el8_6 +18
    • Red Hat Enterprise Linux BaseOS TUS (v.8.6) bpftool-4.18.0-372.119.1.el8_6, kernel-4.18.0-372.119.1.el8_6, kernel-abi-stablelists-4.18.0-372.119.1.el8_6 +13

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 8AffectedNo fix yet
Red Hat Enterprise Linux 9AffectedNo fix planned: Will not fix
Red Hat Enterprise Linux BaseOS AUS (v.8.6)Fixed RHSA-2024:5692
Red Hat Enterprise Linux BaseOS E4S (v.8.6)Fixed RHSA-2024:5692
Red Hat Enterprise Linux BaseOS TUS (v.8.6)Fixed RHSA-2024:5692
Not affected: 5 products
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux BaseOS AUS (v.8.6)
  • Red Hat Enterprise Linux BaseOS E4S (v.8.6)
  • Red Hat Enterprise Linux BaseOS TUS (v.8.6)

Timeline

  1. 2026-10-02 Threatist record created from CVE-2022-48793
  2. 2026-10-03 Alias added: GHSA-p5hp-9793-2w9c

References

Patch 3

  • TI-2025-26358 tls: fix handling of zero-length records on the rx_list KEVCVSS 3.1CRITICAL 9.8
  • TI-2026-38352 netfilter: bridge: make ebt_snat ARP rewrite writable KEVCVSS 3.1HIGH 8.8
  • TI-2013-05264 The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the… KEVCVSS 3.1HIGH 8.8
  • TI-2022-00125 Integer overflow in kernel KEVCVSS 3.1HIGH 8.4
  • TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
  • TI-2021-05514 Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACE KEVCVSS 3.1HIGH 8.3
See all 15278 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences