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CVE-2024-26795— riscv: Sparse-Memory/vmemmap out-of-bounds fix

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 riscv vmemmap 中存在安全问题。

CVSS 7.8 · High EPSS 0.24% · P14

Possible ATT&CK Techniques 1 AI

T1055 · Process Injection

Affected Version Matrix 12

VendorProduct Version RangeStatus
Linux Linux d95f1a542c3df396137afa217ef9bd39cb8931ca< 5941a90c55d3bfba732b32208d58d997600b44ef affected
d95f1a542c3df396137afa217ef9bd39cb8931ca< 8310080799b40fd9f2a8b808c657269678c149af affected
d95f1a542c3df396137afa217ef9bd39cb8931ca< a278d5c60f21aa15d540abb2f2da6e6d795c3e6e affected
d95f1a542c3df396137afa217ef9bd39cb8931ca< 2a1728c15ec4f45ed9248ae22f626541c179bfbe affected
d95f1a542c3df396137afa217ef9bd39cb8931ca< a11dd49dcb9376776193e15641f84fcc1e5980c9 affected
5.4 affected
< 5.4 unaffected
5.15.151≤ 5.15.* unaffected
… +4 more rows
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I. Basic Information for CVE-2024-26795

Vulnerability Information
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Vulnerability Title
riscv: Sparse-Memory/vmemmap out-of-bounds fix
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: riscv: Sparse-Memory/vmemmap out-of-bounds fix Offset vmemmap so that the first page of vmemmap will be mapped to the first page of physical memory in order to ensure that vmemmap’s bounds will be respected during pfn_to_page()/page_to_pfn() operations. The conversion macros will produce correct SV39/48/57 addresses for every possible/valid DRAM_BASE inside the physical memory limits. v2:Address Alex's comments
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/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 riscv vmemmap 中存在安全问题。
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 d95f1a542c3df396137afa217ef9bd39cb8931ca ~ 5941a90c55d3bfba732b32208d58d997600b44ef -
Linux Linux 5.4 -

II. Public POCs for CVE-2024-26795

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III. Intelligence Information for CVE-2024-26795

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Mailing List Discussions for CVE-2024-26795 (1)

Other References for CVE-2024-26795 (6)

Same Patch Batch · Linux · 2024-04-04 · 32 CVEs total

CVE-2024-26782 9.8 CRITICAL mptcp: fix double-free on socket dismantle
CVE-2024-26800 9.8 CRITICAL tls: fix use-after-free on failed backlog decryption
CVE-2024-26801 8.8 HIGH Bluetooth: Avoid potential use-after-free in hci_error_reset
CVE-2024-26792 7.8 HIGH btrfs: fix double free of anonymous device after snapshot creation failure
CVE-2024-26809 7.8 HIGH netfilter: nft_set_pipapo: release elements in clone only from destroy path
CVE-2024-26808 7.8 HIGH netfilter: nft_chain_filter: handle NETDEV_UNREGISTER for inet/ingress basechain
CVE-2024-26807 7.8 HIGH spi: cadence-qspi: fix pointer reference in runtime PM hooks
CVE-2024-26804 7.8 HIGH net: ip_tunnel: prevent perpetual headroom growth
CVE-2024-26802 7.8 HIGH stmmac: Clear variable when destroying workqueue
CVE-2024-26797 7.8 HIGH drm/amd/display: Prevent potential buffer overflow in map_hw_resources
CVE-2024-26793 7.8 HIGH gtp: fix use-after-free and null-ptr-deref in gtp_newlink()
CVE-2024-26789 7.8 HIGH crypto: arm64/neonbs - fix out-of-bounds access on short input
CVE-2024-26786 7.8 HIGH iommufd: Fix iopt_access_list_id overwrite bug
CVE-2024-26799 7.0 HIGH ASoC: qcom: Fix uninitialized pointer dmactl
CVE-2024-26785 iommufd: Fix protection fault in iommufd_test_syz_conv_iova
CVE-2024-26746 dmaengine: idxd: Ensure safe user copy of completion record
CVE-2024-26750 af_unix: Drop oob_skb ref before purging queue in GC.
CVE-2024-26780 af_unix: Fix task hung while purging oob_skb in GC.
CVE-2024-26806 spi: cadence-qspi: remove system-wide suspend helper calls from runtime PM hooks
CVE-2024-26805 netlink: Fix kernel-infoleak-after-free in __skb_datagram_iter

Showing top 20 of 32 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2024-26795

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