github - ghsa-pmwj-r76w-m8f7

GHSA-PMWJ-R76W-M8F7

Vulnerability from github – Published: 2024-08-22 06:30 – Updated: 2024-08-22 21:31

Details

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

bpf: Add schedule points in batch ops

syzbot reported various soft lockups caused by bpf batch operations.

INFO: task kworker/1:1:27 blocked for more than 140 seconds. INFO: task hung in rcu_barrier

Nothing prevents batch ops to process huge amount of data, we need to add schedule points in them.

Note that maybe_wait_bpf_programs(map) calls from generic_map_delete_batch() can be factorized by moving the call after the loop.

This will be done later in -next tree once we get this fix merged, unless there is strong opinion doing this optimization sooner.

Severity ?

3.3 (Low)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2022-48939"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-834"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-08-22T04:15:17Z",
    "severity": "LOW"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Add schedule points in batch ops\n\nsyzbot reported various soft lockups caused by bpf batch operations.\n\n INFO: task kworker/1:1:27 blocked for more than 140 seconds.\n INFO: task hung in rcu_barrier\n\nNothing prevents batch ops to process huge amount of data,\nwe need to add schedule points in them.\n\nNote that maybe_wait_bpf_programs(map) calls from\ngeneric_map_delete_batch() can be factorized by moving\nthe call after the loop.\n\nThis will be done later in -next tree once we get this fix merged,\nunless there is strong opinion doing this optimization sooner.",
  "id": "GHSA-pmwj-r76w-m8f7",
  "modified": "2024-08-22T21:31:29Z",
  "published": "2024-08-22T06:30:29Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-48939"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/75134f16e7dd0007aa474b281935c5f42e79f2c8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7e8099967d0e3ff9d1ae043e80b27fbe46c08417"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7ef94bfb08fb9e73defafbd5ddef6b5a0e2ee12b"
    },
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  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2022-48939 (GCVE-0-2022-48939)

Vulnerability from cvelistv5 – Published: 2024-08-22 03:31 – Updated: 2025-05-04 08:26

Summary

In the Linux kernel, the following vulnerability has been resolved: bpf: Add schedule points in batch ops syzbot reported various soft lockups caused by bpf batch operations. INFO: task kworker/1:1:27 blocked for more than 140 seconds. INFO: task hung in rcu_barrier Nothing prevents batch ops to process huge amount of data, we need to add schedule points in them. Note that maybe_wait_bpf_programs(map) calls from generic_map_delete_batch() can be factorized by moving the call after the loop. This will be done later in -next tree once we get this fix merged, unless there is strong opinion doing this optimization sooner.

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/7ef94bfb08fb9e73d…
	https://git.kernel.org/stable/c/8628f489b749a4f97…
	https://git.kernel.org/stable/c/7e8099967d0e3ff9d…
	https://git.kernel.org/stable/c/75134f16e7dd0007a…

Impacted products

Vendor

Product

Version

Linux

Affected: cb4d03ab499d4c040f4ab6fd4389d2b49f42b5a5 , < 7ef94bfb08fb9e73defafbd5ddef6b5a0e2ee12b (git)
Affected: cb4d03ab499d4c040f4ab6fd4389d2b49f42b5a5 , < 8628f489b749a4f9767991631921dbe3fbcdc784 (git)
Affected: cb4d03ab499d4c040f4ab6fd4389d2b49f42b5a5 , < 7e8099967d0e3ff9d1ae043e80b27fbe46c08417 (git)
Affected: cb4d03ab499d4c040f4ab6fd4389d2b49f42b5a5 , < 75134f16e7dd0007aa474b281935c5f42e79f2c8 (git)

Linux

Affected: 5.6
Unaffected: 0 , < 5.6 (semver)
Unaffected: 5.10.103 , ≤ 5.10.* (semver)
Unaffected: 5.15.26 , ≤ 5.15.* (semver)
Unaffected: 5.16.12 , ≤ 5.16.* (semver)
Unaffected: 5.17 , ≤ * (original_commit_for_fix)

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Sightings

Author	Source	Type	Date

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-PMWJ-R76W-M8F7

CVE-2022-48939 (GCVE-0-2022-48939)

Tags

Sightings

Nomenclature