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CVE-2024-53135— KVM: VMX: Bury Intel PT virtualization (guest/host mode) behind CONFIG_BROKEN

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于KVM虚拟化中Intel PT虚拟化（guest/host模式）的实现中存在多种错误，包括可能导致虚拟机故障和主机稳定性及健康风险的问题。

CVSS 8.8 · High EPSS 0.24% · P14

Affected Version Matrix 16

VendorProduct Version RangeStatus
Linux Linux f99e3daf94ff35dd4a878d32ff66e1fd35223ad6< c3742319d021f5aa3a0a8c828485fee14753f6de affected
f99e3daf94ff35dd4a878d32ff66e1fd35223ad6< d4b42f926adcce4e5ec193c714afd9d37bba8e5b affected
f99e3daf94ff35dd4a878d32ff66e1fd35223ad6< b8a1d572478b6f239061ee9578b2451bf2f021c2 affected
f99e3daf94ff35dd4a878d32ff66e1fd35223ad6< e6716f4230a8784957273ddd27326264b27b9313 affected
f99e3daf94ff35dd4a878d32ff66e1fd35223ad6< d28b059ee4779b5102c5da6e929762520510e406 affected
f99e3daf94ff35dd4a878d32ff66e1fd35223ad6< b91bb0ce5cd7005b376eac690ec664c1b56372ec affected
f99e3daf94ff35dd4a878d32ff66e1fd35223ad6< aa0d42cacf093a6fcca872edc954f6f812926a17 affected
5.0 affected
… +8 more rows
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I. Basic Information for CVE-2024-53135

Vulnerability Information
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Vulnerability Title
KVM: VMX: Bury Intel PT virtualization (guest/host mode) behind CONFIG_BROKEN
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: KVM: VMX: Bury Intel PT virtualization (guest/host mode) behind CONFIG_BROKEN Hide KVM's pt_mode module param behind CONFIG_BROKEN, i.e. disable support for virtualizing Intel PT via guest/host mode unless BROKEN=y. There are myriad bugs in the implementation, some of which are fatal to the guest, and others which put the stability and health of the host at risk. For guest fatalities, the most glaring issue is that KVM fails to ensure tracing is disabled, and *stays* disabled prior to VM-Enter, which is necessary as hardware disallows loading (the guest's) RTIT_CTL if tracing is enabled (enforced via a VMX consistency check). Per the SDM: If the logical processor is operating with Intel PT enabled (if IA32_RTIT_CTL.TraceEn = 1) at the time of VM entry, the "load IA32_RTIT_CTL" VM-entry control must be 0. On the host side, KVM doesn't validate the guest CPUID configuration provided by userspace, and even worse, uses the guest configuration to decide what MSRs to save/load at VM-Enter and VM-Exit. E.g. configuring guest CPUID to enumerate more address ranges than are supported in hardware will result in KVM trying to passthrough, save, and load non-existent MSRs, which generates a variety of WARNs, ToPA ERRORs in the host, a potential deadlock, etc.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于KVM虚拟化中Intel PT虚拟化（guest/host模式）的实现中存在多种错误，包括可能导致虚拟机故障和主机稳定性及健康风险的问题。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux f99e3daf94ff35dd4a878d32ff66e1fd35223ad6 ~ c3742319d021f5aa3a0a8c828485fee14753f6de -
Linux Linux 5.0 -

II. Public POCs for CVE-2024-53135

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III. Intelligence Information for CVE-2024-53135

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Patches & Fixes for CVE-2024-53135 (7)

Same Patch Batch · Linux · 2024-12-04 · 16 CVEs total

CVE-2024-53138 9.8 CRITICAL net/mlx5e: kTLS, Fix incorrect page refcounting
CVE-2024-53125 7.8 HIGH bpf: sync_linked_regs() must preserve subreg_def
CVE-2024-53127 7.8 HIGH Revert "mmc: dw_mmc: Fix IDMAC operation with pages bigger than 4K"
CVE-2024-53133 7.8 HIGH drm/amd/display: Handle dml allocation failure to avoid crash
CVE-2024-53139 7.8 HIGH sctp: fix possible UAF in sctp_v6_available()
CVE-2024-53140 7.8 HIGH netlink: terminate outstanding dump on socket close
CVE-2024-53136 7.5 HIGH mm: revert "mm: shmem: fix data-race in shmem_getattr()"
CVE-2024-53126 7.1 HIGH vdpa: solidrun: Fix UB bug with devres
CVE-2024-53128 sched/task_stack: fix object_is_on_stack() for KASAN tagged pointers
CVE-2024-53129 drm/rockchip: vop: Fix a dereferenced before check warning
CVE-2024-53130 nilfs2: fix null-ptr-deref in block_dirty_buffer tracepoint
CVE-2024-53131 nilfs2: fix null-ptr-deref in block_touch_buffer tracepoint
CVE-2024-53132 drm/xe/oa: Fix "Missing outer runtime PM protection" warning
CVE-2024-53134 pmdomain: imx93-blk-ctrl: correct remove path
CVE-2024-53137 ARM: fix cacheflush with PAN

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2024-53135

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