Vulnerability-Lookup

GHSA-QX5F-76WJ-2XM5

Vulnerability from github – Published: 2024-06-20 12:31 – Updated: 2025-01-07 00:31

Details

In the Linux kernel, the following vulnerability has been resolved:

bpf: Guard against accessing NULL pt_regs in bpf_get_task_stack()

task_pt_regs() can return NULL on powerpc for kernel threads. This is then used in __bpf_get_stack() to check for user mode, resulting in a kernel oops. Guard against this by checking return value of task_pt_regs() before trying to obtain the call chain.

Severity

5.5 (Medium)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2022-48770"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-06-20T12:15:14Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Guard against accessing NULL pt_regs in bpf_get_task_stack()\n\ntask_pt_regs() can return NULL on powerpc for kernel threads. This is\nthen used in __bpf_get_stack() to check for user mode, resulting in a\nkernel oops. Guard against this by checking return value of\ntask_pt_regs() before trying to obtain the call chain.",
  "id": "GHSA-qx5f-76wj-2xm5",
  "modified": "2025-01-07T00:31:39Z",
  "published": "2024-06-20T12:31:22Z",
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    },
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      "url": "https://git.kernel.org/stable/c/b992f01e66150fc5e90be4a96f5eb8e634c8249e"
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}

CVE-2022-48770 (GCVE-0-2022-48770)

Vulnerability from cvelistv5 – Published: 2024-06-20 11:13 – Updated: 2026-05-11 18:46

Title

bpf: Guard against accessing NULL pt_regs in bpf_get_task_stack()

Summary

In the Linux kernel, the following vulnerability has been resolved: bpf: Guard against accessing NULL pt_regs in bpf_get_task_stack() task_pt_regs() can return NULL on powerpc for kernel threads. This is then used in __bpf_get_stack() to check for user mode, resulting in a kernel oops. Guard against this by checking return value of task_pt_regs() before trying to obtain the call chain.

Severity

No CVSS data available.

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-09-10 17:10 UTC

Assigner

Linux mitre root

References

4 references

URL	Tags
https://git.kernel.org/stable/c/ff6bdc205fd0a83bd…
https://git.kernel.org/stable/c/0bcd484587b3b3092…
https://git.kernel.org/stable/c/b82ef4985a6d05e80…
https://git.kernel.org/stable/c/b992f01e66150fc5e…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: fa28dcb82a38f8e3993b0fae9106b1a80b59e4f0 , < ff6bdc205fd0a83bd365405d4e31fb5905826996 (git) Affected: fa28dcb82a38f8e3993b0fae9106b1a80b59e4f0 , < 0bcd484587b3b3092e448d27dc369e347e1810c3 (git) Affected: fa28dcb82a38f8e3993b0fae9106b1a80b59e4f0 , < b82ef4985a6d05e80f604624332430351df7b79a (git) Affected: fa28dcb82a38f8e3993b0fae9106b1a80b59e4f0 , < b992f01e66150fc5e90be4a96f5eb8e634c8249e (git)
Linux	Linux	Affected: 5.9 Unaffected: 0 , < 5.9 (semver) Unaffected: 5.10.96 , ≤ 5.10.* (semver) Unaffected: 5.15.19 , ≤ 5.15.* (semver) Unaffected: 5.16.5 , ≤ 5.16.* (semver) Unaffected: 5.17 , ≤ * (original_commit_for_fix)

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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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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GHSA-QX5F-76WJ-2XM5

CVE-2022-48770 (GCVE-0-2022-48770)

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