github - ghsa-qx5f-76wj-2xm5

ghsa-qx5f-76wj-2xm5

Vulnerability from github

Published

2024-06-20 12:31

Modified

2024-06-20 12:31

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.

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{
  "affected": [],
  "aliases": [
    "CVE-2022-48770"
  ],
  "database_specific": {
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    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-06-20T12:15:14Z",
    "severity": null
  },
  "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": "2024-06-20T12:31:22Z",
  "published": "2024-06-20T12:31:22Z",
  "references": [
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      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-48770"
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  "schema_version": "1.4.0",
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cve-2022-48770

Vulnerability from cvelistv5

Published

2024-06-20 11:13

Modified

2024-11-04 12:16

Severity ?

Summary

bpf: Guard against accessing NULL pt_regs in bpf_get_task_stack()

References

▼	URL	Tags
	https://git.kernel.org/stable/c/ff6bdc205fd0a83bd365405d4e31fb5905826996
	https://git.kernel.org/stable/c/0bcd484587b3b3092e448d27dc369e347e1810c3
	https://git.kernel.org/stable/c/b82ef4985a6d05e80f604624332430351df7b79a
	https://git.kernel.org/stable/c/b992f01e66150fc5e90be4a96f5eb8e634c8249e

Impacted products

Vendor

Product

Version

▼

Linux

Version: fa28dcb82a38
Version: fa28dcb82a38
Version: fa28dcb82a38
Version: fa28dcb82a38

Linux

Version: 5.9

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Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

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