Vulnerability-Lookup

GHSA-JQWW-7HVV-R9XF

Vulnerability from github – Published: 2024-05-19 12:30 – Updated: 2025-09-24 21:30

Details

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.

Severity

7.1 (High)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

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  "affected": [],
  "aliases": [
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    "github_reviewed_at": null,
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    "severity": "HIGH"
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  "id": "GHSA-jqww-7hvv-r9xf",
  "modified": "2025-09-24T21:30:30Z",
  "published": "2024-05-19T12:30:39Z",
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CVE-2024-35939 (GCVE-0-2024-35939)

Vulnerability from cvelistv5 – Published: 2024-05-19 10:10 – Updated: 2026-05-23 15:45

Title

dma-direct: Leak pages on dma_set_decrypted() failure

Summary

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.

Severity

No CVSS data available.

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

Assigner

Linux

References

4 references

URL	Tags
https://git.kernel.org/stable/c/4e0cfb25d49da2e62…
https://git.kernel.org/stable/c/4031b72ca747a1e6e…
https://git.kernel.org/stable/c/b57326c96b7bc7638…
https://git.kernel.org/stable/c/b9fa16949d18e06bd…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 56fccf21d1961a06e2a0c96ce446ebf036651062 , < 4e0cfb25d49da2e6261ad582f58ffa5b5dd8c8e9 (git) Affected: 56fccf21d1961a06e2a0c96ce446ebf036651062 , < 4031b72ca747a1e6e9ae4fa729e765b43363d66a (git) Affected: 56fccf21d1961a06e2a0c96ce446ebf036651062 , < b57326c96b7bc7638aa8c44e12afa2defe0c934c (git) Affected: 56fccf21d1961a06e2a0c96ce446ebf036651062 , < b9fa16949d18e06bdf728a560f5c8af56d2bdcaf (git) Affected: 91c7b0407ca6a62c095d265f76926b67bf66c026 (git) Affected: 5.7.7 , < 5.8 (semver)
Linux	Linux	Affected: 5.8 Unaffected: 0 , < 5.8 (semver) Unaffected: 6.1.86 , ≤ 6.1.* (semver) Unaffected: 6.6.27 , ≤ 6.6.* (semver) Unaffected: 6.8.6 , ≤ 6.8.* (semver) Unaffected: 6.9 , ≤ * (original_commit_for_fix)

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JSON

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-JQWW-7HVV-R9XF

CVE-2024-35939 (GCVE-0-2024-35939)

Tags

Sightings

Nomenclature