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CVE-2024-35939— dma-direct: Leak pages on dma_set_decrypted() failure

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dma_set_decrypted函数失败时会泄漏页面。

CVSS 9.3 · Critical EPSS 0.22% · P12

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 12

VendorProduct Version RangeStatus
Linux Linux 56fccf21d1961a06e2a0c96ce446ebf036651062< 4e0cfb25d49da2e6261ad582f58ffa5b5dd8c8e9 affected
56fccf21d1961a06e2a0c96ce446ebf036651062< 4031b72ca747a1e6e9ae4fa729e765b43363d66a affected
56fccf21d1961a06e2a0c96ce446ebf036651062< b57326c96b7bc7638aa8c44e12afa2defe0c934c affected
56fccf21d1961a06e2a0c96ce446ebf036651062< b9fa16949d18e06bdf728a560f5c8af56d2bdcaf affected
91c7b0407ca6a62c095d265f76926b67bf66c026 affected
5.7.7< 5.8 affected
5.8 affected
< 5.8 unaffected
… +4 more rows
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I. Basic Information for CVE-2024-35939

Vulnerability Information
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Vulnerability Title
dma-direct: Leak pages on dma_set_decrypted() failure
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: dma-direct: Leak pages on dma_set_decrypted() failure On TDX it is possible for the untrusted host to cause set_memory_encrypted() or set_memory_decrypted() to fail such that an error is returned and the resulting memory is shared. Callers need to take care to handle these errors to avoid returning decrypted (shared) memory to the page allocator, which could lead to functional or security issues. DMA could free decrypted/shared pages if dma_set_decrypted() fails. This should be a rare case. Just leak the pages in this case instead of freeing them.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/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dma_set_decrypted函数失败时会泄漏页面。
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 56fccf21d1961a06e2a0c96ce446ebf036651062 ~ 4e0cfb25d49da2e6261ad582f58ffa5b5dd8c8e9 -
Linux Linux 5.8 -

II. Public POCs for CVE-2024-35939

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III. Intelligence Information for CVE-2024-35939

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Other References for CVE-2024-35939 (4)

Same Patch Batch · Linux · 2024-05-19 · 82 CVEs total

CVE-2024-35884 9.8 CRITICAL udp: do not accept non-tunnel GSO skbs landing in a tunnel
CVE-2024-35864 9.8 CRITICAL smb: client: fix potential UAF in smb2_is_valid_lease_break()
CVE-2024-35862 9.8 CRITICAL smb: client: fix potential UAF in smb2_is_network_name_deleted()
CVE-2024-35863 9.8 CRITICAL smb: client: fix potential UAF in is_valid_oplock_break()
CVE-2024-35865 9.8 CRITICAL smb: client: fix potential UAF in smb2_is_valid_oplock_break()
CVE-2024-35869 9.8 CRITICAL smb: client: guarantee refcounted children from parent session
CVE-2024-35870 9.8 CRITICAL smb: client: fix UAF in smb2_reconnect_server()
CVE-2024-35861 9.8 CRITICAL smb: client: fix potential UAF in cifs_signal_cifsd_for_reconnect()
CVE-2024-35915 8.8 HIGH nfc: nci: Fix uninit-value in nci_dev_up and nci_ntf_packet
CVE-2024-35887 8.8 HIGH ax25: fix use-after-free bugs caused by ax25_ds_del_timer
CVE-2024-35889 8.6 HIGH idpf: fix kernel panic on unknown packet types
CVE-2024-35875 8.4 HIGH x86/coco: Require seeding RNG with RDRAND on CoCo systems
CVE-2024-35937 8.1 HIGH wifi: cfg80211: check A-MSDU format more carefully
CVE-2024-35932 7.8 HIGH drm/vc4: don't check if plane->state->fb == state->fb
CVE-2024-35919 7.8 HIGH media: mediatek: vcodec: adding lock to protect encoder context list
CVE-2024-35890 7.8 HIGH gro: fix ownership transfer
CVE-2024-35894 7.8 HIGH mptcp: prevent BPF accessing lowat from a subflow socket.
CVE-2024-35910 7.8 HIGH tcp: properly terminate timers for kernel sockets
CVE-2024-35920 7.8 HIGH media: mediatek: vcodec: adding lock to protect decoder context list
CVE-2024-35921 7.8 HIGH media: mediatek: vcodec: Fix oops when HEVC init fails

Showing top 20 of 82 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2024-35939

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