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CVE-2024-56756— nvme-pci: fix freeing of the HMB descriptor table

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nvme-pci驱动中HMB描述符表释放的问题。

AI Predicted 4.3 Difficulty: Trivial EPSS 0.22% · P12

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 87ad72a59a38d1df217cfd95bc222a2edfe5d399< ac22240540e0c5230d8c4138e3778420b712716a affected
87ad72a59a38d1df217cfd95bc222a2edfe5d399< 452f9ddd12bebc04cef741e8ba3806bf0e1fd015 affected
87ad72a59a38d1df217cfd95bc222a2edfe5d399< 869cf50b9c9d1059f5223f79ef68fc0bc6210095 affected
87ad72a59a38d1df217cfd95bc222a2edfe5d399< fb96d5cfa97a7363245b3dd523f475b04296d87b affected
87ad72a59a38d1df217cfd95bc222a2edfe5d399< cee3bff51a35cab1c5d842d409a7b11caefe2386 affected
87ad72a59a38d1df217cfd95bc222a2edfe5d399< 6d0f599db73b099aa724a12736369c4d4d92849d affected
87ad72a59a38d1df217cfd95bc222a2edfe5d399< 582d9ed999b004fb1d415ecbfa86d4d8df455269 affected
87ad72a59a38d1df217cfd95bc222a2edfe5d399< 3c2fb1ca8086eb139b2a551358137525ae8e0d7a affected
… +10 more rows
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I. Basic Information for CVE-2024-56756

Vulnerability Information
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Vulnerability Title
nvme-pci: fix freeing of the HMB descriptor table
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: nvme-pci: fix freeing of the HMB descriptor table The HMB descriptor table is sized to the maximum number of descriptors that could be used for a given device, but __nvme_alloc_host_mem could break out of the loop earlier on memory allocation failure and end up using less descriptors than planned for, which leads to an incorrect size passed to dma_free_coherent. In practice this was not showing up because the number of descriptors tends to be low and the dma coherent allocator always allocates and frees at least a page.
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nvme-pci驱动中HMB描述符表释放的问题。
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 87ad72a59a38d1df217cfd95bc222a2edfe5d399 ~ ac22240540e0c5230d8c4138e3778420b712716a -
Linux Linux 4.13 -

II. Public POCs for CVE-2024-56756

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III. Intelligence Information for CVE-2024-56756

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Patches & Fixes for CVE-2024-56756 (8)

Same Patch Batch · Linux · 2024-12-29 · 39 CVEs total

CVE-2024-56719 10.0 CRITICAL net: stmmac: fix TSO DMA API usage causing oops
CVE-2024-56718 9.8 CRITICAL net/smc: protect link down work from execute after lgr freed
CVE-2024-56720 7.8 HIGH bpf, sockmap: Several fixes to bpf_msg_pop_data
CVE-2024-56740 7.8 HIGH nfs/localio: must clear res.replen in nfs_local_read_done
CVE-2024-56709 7.8 HIGH io_uring: check if iowq is killed before queuing
CVE-2024-56715 7.8 HIGH ionic: Fix netdev notifier unregister on failure
CVE-2024-56717 7.5 HIGH net: mscc: ocelot: fix incorrect IFH SRC_PORT field in ocelot_ifh_set_basic()
CVE-2024-56749 7.5 HIGH dlm: fix dlm_recover_members refcount on error
CVE-2024-56721 7.1 HIGH x86/CPU/AMD: Terminate the erratum_1386_microcode array
CVE-2024-56747 scsi: qedi: Fix a possible memory leak in qedi_alloc_and_init_sb()
CVE-2024-56755 netfs/fscache: Add a memory barrier for FSCACHE_VOLUME_CREATING
CVE-2024-56742 vfio/mlx5: Fix an unwind issue in mlx5vf_add_migration_pages()
CVE-2024-56743 nfs_common: must not hold RCU while calling nfsd_file_put_local
CVE-2024-56754 crypto: caam - Fix the pointer passed to caam_qi_shutdown()
CVE-2024-56745 PCI: Fix reset_method_store() memory leak
CVE-2024-56744 f2fs: fix to avoid potential deadlock in f2fs_record_stop_reason()
CVE-2024-56746 fbdev: sh7760fb: Fix a possible memory leak in sh7760fb_alloc_mem()
CVE-2024-56748 scsi: qedf: Fix a possible memory leak in qedf_alloc_and_init_sb()
CVE-2024-56727 octeontx2-pf: handle otx2_mbox_get_rsp errors in otx2_flows.c
CVE-2024-56753 drm/amdgpu/gfx9: Add Cleaner Shader Deinitialization in gfx_v9_0 Module

Showing top 20 of 39 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2024-56756

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