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CVE-2024-35996— cpu: Re-enable CPU mitigations by default for !X86 architectures

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，该漏洞源于没有启用 CPU 缓解措施。

EPSS 0.24% · P15

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking

Affected Version Matrix 10

VendorProduct Version RangeStatus
Linux Linux 30da4180fd768973189dc364648f9c436e57b01d< af6d6a923b40bf6471e44067ac61cc5814b48e7f affected
70688450dddaf91e12fd4fc625da3297025932c9< 36b32816fbab267611f073223f1b0b816ec5920f affected
9c09773917fbb77dff85b433e1e89123fc5fb530< 38f17d1fbb5bfb56ca1419e2d06376d57a9396f9 affected
2978ee7c973ce81b6e51100ba1e5ae001af624b9< 8292f4f8dd1b005d0688d726261004f816ef730a affected
c4a9babdd5d5a41a74269a2e1aa1647b1b4c45bb< fd8547ebc187037cc69441a15c1441aeaab80f49 affected
f337a6a21e2fd67eadea471e93d05dd37baaa9be< fe42754b94a42d08cf9501790afc25c4f6a5f631 affected
5.15.156< 5.15.158 affected
6.1.87< 6.1.90 affected
… +2 more rows
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I. Basic Information for CVE-2024-35996

Vulnerability Information
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Vulnerability Title
cpu: Re-enable CPU mitigations by default for !X86 architectures
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: cpu: Re-enable CPU mitigations by default for !X86 architectures Rename x86's to CPU_MITIGATIONS, define it in generic code, and force it on for all architectures exception x86. A recent commit to turn mitigations off by default if SPECULATION_MITIGATIONS=n kinda sorta missed that "cpu_mitigations" is completely generic, whereas SPECULATION_MITIGATIONS is x86-specific. Rename x86's SPECULATIVE_MITIGATIONS instead of keeping both and have it select CPU_MITIGATIONS, as having two configs for the same thing is unnecessary and confusing. This will also allow x86 to use the knob to manage mitigations that aren't strictly related to speculative execution. Use another Kconfig to communicate to common code that CPU_MITIGATIONS is already defined instead of having x86's menu depend on the common CPU_MITIGATIONS. This allows keeping a single point of contact for all of x86's mitigations, and it's not clear that other architectures *want* to allow disabling mitigations at compile-time.
Source: CVE Program / CVE List V5
CVSS Information
N/A
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，该漏洞源于没有启用 CPU 缓解措施。
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 30da4180fd768973189dc364648f9c436e57b01d ~ af6d6a923b40bf6471e44067ac61cc5814b48e7f -
Linux Linux 5.15.156 ~ 5.15.158 -

II. Public POCs for CVE-2024-35996

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III. Intelligence Information for CVE-2024-35996

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Mailing List Discussions for CVE-2024-35996 (1)

Other References for CVE-2024-35996 (6)

Same Patch Batch · Linux · 2024-05-20 · 62 CVEs total

CVE-2024-35969 8.8 HIGH ipv6: fix race condition between ipv6_get_ifaddr and ipv6_del_addr
CVE-2024-35987 8.4 HIGH riscv: Fix loading 64-bit NOMMU kernels past the start of RAM
CVE-2024-35980 8.4 HIGH arm64: tlb: Fix TLBI RANGE operand
CVE-2024-35948 7.8 HIGH bcachefs: Check for journal entries overruning end of sb clean section
CVE-2024-36001 7.8 HIGH netfs: Fix the pre-flush when appending to a file in writethrough mode
CVE-2024-36007 7.8 HIGH mlxsw: spectrum_acl_tcam: Fix warning during rehash
CVE-2024-35993 7.8 HIGH mm: turn folio_test_hugetlb into a PageType
CVE-2024-35994 7.8 HIGH firmware: qcom: uefisecapp: Fix memory related IO errors and crashes
CVE-2024-35990 7.8 HIGH dma: xilinx_dpdma: Fix locking
CVE-2024-36009 7.8 HIGH ax25: Fix netdev refcount issue
CVE-2024-35968 7.8 HIGH pds_core: Fix pdsc_check_pci_health function to use work thread
CVE-2024-35958 7.8 HIGH net: ena: Fix incorrect descriptor free behavior
CVE-2024-35954 7.8 HIGH scsi: sg: Avoid sg device teardown race
CVE-2024-35951 7.8 HIGH drm/panfrost: Fix the error path in panfrost_mmu_map_fault_addr()
CVE-2024-35950 7.8 HIGH drm/client: Fully protect modes[] with dev->mode_config.mutex
CVE-2024-35949 7.8 HIGH btrfs: make sure that WRITTEN is set on all metadata blocks
CVE-2024-35979 7.8 HIGH raid1: fix use-after-free for original bio in raid1_write_request()
CVE-2024-35999 7.5 HIGH smb3: missing lock when picking channel
CVE-2024-35998 7.5 HIGH smb3: fix lock ordering potential deadlock in cifs_sync_mid_result
CVE-2024-35971 7.5 HIGH net: ks8851: Handle softirqs at the end of IRQ thread to fix hang

Showing top 20 of 62 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2024-35996

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