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TI-2024-33559 Aliases CVE-2024-50115GHSA-mjgv-4grg-pfrr

KVM: nSVM: Ignore nCR3[4:0] when loading PDPTEs from memory

Priority LOW 36CWE-125Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · None · High
Fix status
Partial Red Hat: 5 fixed, 1 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat.

Summary

In the Linux kernel, the following vulnerability has been resolved: KVM: nSVM: Ignore nCR3[4:0] when loading PDPTEs from memory Ignore nCR3[4:0] when loading PDPTEs from memory for nested SVM, as bits 4:0 of CR3 are ignored when PAE paging is used, and thus VMRUN doesn't enforce 32-byte alignment of nCR3. In the absolute worst case scenario, failure to ignore bits 4:0 can result in an out-of-bounds read, e.g. if the target page is at the end of a memslot, and the VMM isn't using guard pages. Per the APM: The CR3 register points to the base address of the page-directory-pointer table. The page-directory-pointer table is aligned on a 32-byte boundary, with the low 5 address bits 4:0 assumed to be 0. And the SDM's much more explicit: 4:0 Ignored Note, KVM gets this right when loading PDPTRs, it's only the nSVM flow that is broken.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00245 15th percentileScored 2026-11-07
Fix Partial Linux (Linux): 5.10.229, 5.15.170, 6.1.115 +3Red Hat: 1 advisoryRed Hat: 5 fixed, 1 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
LinuxLinux3.2 and later5.10.229, 5.15.170, 6.1.115, 6.6.59, 6.11.6, 6.12Patch availableCNA
  • Linux VendorLinux Affected 3.2 and later Fixed in 5.10.229, 5.15.170, 6.1.115, 6.6.59, 6.11.6, 6.12 Patch available CNA

CPE configurations NVD · 5

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*3.2 to before 5.10.229; 5.11 to before 5.15.170; 5.16 to before 6.1.115; 6.2 to before 6.6.59; 6.7 to before 6.11.6VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.12:rc1:*:*:*:*:*:*6.12 rc1VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.12:rc2:*:*:*:*:*:*6.12 rc2VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.12:rc3:*:*:*:*:*:*6.12 rc3VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.12:rc4:*:*:*:*:*:*6.12 rc4VulnerableLinux
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 3.2 to before 5.10.229; 5.11 to before 5.15.170; 5.16 to before 6.1.115; 6.2 to before 6.6.59; 6.7 to before 6.11.6 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.12:rc1:*:*:*:*:*:* Versions 6.12 rc1 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.12:rc2:*:*:*:*:*:* Versions 6.12 rc2 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.12:rc3:*:*:*:*:*:* Versions 6.12 rc3 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.12:rc4:*:*:*:*:*:* Versions 6.12 rc4 Vulnerable ·Linux

Remediation

  • Fix · CNA Linux (Linux) Fixed in 5.10.229, 5.15.170, 6.1.115, 6.6.59, 6.11.6, 6.12

Red Hat 1 advisory

  • RHSA-2024:11486 Released 2024-12-19 · Red Hat rating Moderate
    kernel security update
    • Red Hat CodeReady Linux Builder (v. 9) kernel-tools-libs-devel-5.14.0-503.19.1.el9_5, libperf-5.14.0-503.19.1.el9_5
    • Red Hat Enterprise Linux AppStream (v. 9) kernel-64k-debug-devel-5.14.0-503.19.1.el9_5, kernel-64k-debug-devel-matched-5.14.0-503.19.1.el9_5, kernel-64k-devel-5.14.0-503.19.1.el9_5 +11
    • Red Hat Enterprise Linux BaseOS (v. 9) bpftool-7.4.0-503.19.1.el9_5, kernel-5.14.0-503.19.1.el9_5, kernel-64k-5.14.0-503.19.1.el9_5 +30
    • Red Hat Enterprise Linux Real Time (v. 9) kernel-rt-5.14.0-503.19.1.el9_5, kernel-rt-core-5.14.0-503.19.1.el9_5, kernel-rt-debug-5.14.0-503.19.1.el9_5 +9
    • Red Hat Enterprise Linux Real Time for NFV (v. 9) kernel-rt-5.14.0-503.19.1.el9_5, kernel-rt-core-5.14.0-503.19.1.el9_5, kernel-rt-debug-5.14.0-503.19.1.el9_5 +11

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux 8AffectedNo fix planned: Will not fix
Red Hat CodeReady Linux Builder (v. 9)Fixed RHSA-2024:11486
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2024:11486
Red Hat Enterprise Linux BaseOS (v. 9)Fixed RHSA-2024:11486
Red Hat Enterprise Linux Real Time (v. 9)Fixed RHSA-2024:11486
Red Hat Enterprise Linux Real Time for NFV (v. 9)Fixed RHSA-2024:11486
Not affected: 2 products
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7

Timeline

  1. 2026-10-02 Threatist record created from CVE-2024-50115
  2. 2026-10-03 Alias added: GHSA-mjgv-4grg-pfrr
  3. 2026-10-29 Affected versions changed · Red Hat

References

Patch 6

  • 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