Vulnerability-Lookup

GHSA-F6F6-F4J2-HRCF

Vulnerability from github – Published: 2025-09-23 21:30 – Updated: 2025-09-23 21:30

Details

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

qede: confirm skb is allocated before using

qede_build_skb() assumes build_skb() always works and goes straight to skb_reserve(). However, build_skb() can fail under memory pressure. This results in a kernel panic because the skb to reserve is NULL.

Add a check in case build_skb() failed to allocate and return NULL.

The NULL return is handled correctly in callers to qede_build_skb().

Severity

5.5 (Medium)


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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2022-49084"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-02-26T07:00:45Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nqede: confirm skb is allocated before using\n\nqede_build_skb() assumes build_skb() always works and goes straight\nto skb_reserve(). However, build_skb() can fail under memory pressure.\nThis results in a kernel panic because the skb to reserve is NULL.\n\nAdd a check in case build_skb() failed to allocate and return NULL.\n\nThe NULL return is handled correctly in callers to qede_build_skb().",
  "id": "GHSA-f6f6-f4j2-hrcf",
  "modified": "2025-09-23T21:30:54Z",
  "published": "2025-09-23T21:30:54Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-49084"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/034a92c6a81048128fc7b18d278d52438a13902a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4e910dbe36508654a896d5735b318c0b88172570"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8928239e5e2e460d95b8a0b89f61671625e7ece0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9648adb1b3ece55c657d3a4f52bfee663b710dfe"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b2d6b3db9d1cf80908964036dbe1c52a86b1afb1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c9bdce2359b5f4986eb38d1e81865b3586cc20d2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e1fd0c42acfa22bb34d2ab6a111484f466ab8093"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2022-49084 (GCVE-0-2022-49084)

Vulnerability from cvelistv5 – Published: 2025-02-26 01:54 – Updated: 2026-08-05 08:53

Title

qede: confirm skb is allocated before using

Summary

In the Linux kernel, the following vulnerability has been resolved: qede: confirm skb is allocated before using qede_build_skb() assumes build_skb() always works and goes straight to skb_reserve(). However, build_skb() can fail under memory pressure. This results in a kernel panic because the skb to reserve is NULL. Add a check in case build_skb() failed to allocate and return NULL. The NULL return is handled correctly in callers to qede_build_skb().

Severity

7.5 (High)


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

Assigner

Linux mitre root

References

7 references

URL	Tags
https://git.kernel.org/stable/c/9648adb1b3ece55c6…
https://git.kernel.org/stable/c/034a92c6a81048128…
https://git.kernel.org/stable/c/8928239e5e2e460d9…
https://git.kernel.org/stable/c/c9bdce2359b5f4986…
https://git.kernel.org/stable/c/b2d6b3db9d1cf8090…
https://git.kernel.org/stable/c/e1fd0c42acfa22bb3…
https://git.kernel.org/stable/c/4e910dbe36508654a…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 8a8633978b842c88fbcfe00d4e5dde96048f630e , < 9648adb1b3ece55c657d3a4f52bfee663b710dfe (git) Affected: 8a8633978b842c88fbcfe00d4e5dde96048f630e , < 034a92c6a81048128fc7b18d278d52438a13902a (git) Affected: 8a8633978b842c88fbcfe00d4e5dde96048f630e , < 8928239e5e2e460d95b8a0b89f61671625e7ece0 (git) Affected: 8a8633978b842c88fbcfe00d4e5dde96048f630e , < c9bdce2359b5f4986eb38d1e81865b3586cc20d2 (git) Affected: 8a8633978b842c88fbcfe00d4e5dde96048f630e , < b2d6b3db9d1cf80908964036dbe1c52a86b1afb1 (git) Affected: 8a8633978b842c88fbcfe00d4e5dde96048f630e , < e1fd0c42acfa22bb34d2ab6a111484f466ab8093 (git) Affected: 8a8633978b842c88fbcfe00d4e5dde96048f630e , < 4e910dbe36508654a896d5735b318c0b88172570 (git)
Linux	Linux	Affected: 4.18 Unaffected: 0 , < 4.18 (semver) Unaffected: 4.19.238 , ≤ 4.19.* (semver) Unaffected: 5.4.189 , ≤ 5.4.* (semver) Unaffected: 5.10.111 , ≤ 5.10.* (semver) Unaffected: 5.15.34 , ≤ 5.15.* (semver) Unaffected: 5.16.20 , ≤ 5.16.* (semver) Unaffected: 5.17.3 , ≤ 5.17.* (semver) Unaffected: 5.18 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/qlogic/qede/qede_fp.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "9648adb1b3ece55c657d3a4f52bfee663b710dfe",
              "status": "affected",
              "version": "8a8633978b842c88fbcfe00d4e5dde96048f630e",
              "versionType": "git"
            },
            {
              "lessThan": "034a92c6a81048128fc7b18d278d52438a13902a",
              "status": "affected",
              "version": "8a8633978b842c88fbcfe00d4e5dde96048f630e",
              "versionType": "git"
            },
            {
              "lessThan": "8928239e5e2e460d95b8a0b89f61671625e7ece0",
              "status": "affected",
              "version": "8a8633978b842c88fbcfe00d4e5dde96048f630e",
              "versionType": "git"
            },
            {
              "lessThan": "c9bdce2359b5f4986eb38d1e81865b3586cc20d2",
              "status": "affected",
              "version": "8a8633978b842c88fbcfe00d4e5dde96048f630e",
              "versionType": "git"
            },
            {
              "lessThan": "b2d6b3db9d1cf80908964036dbe1c52a86b1afb1",
              "status": "affected",
              "version": "8a8633978b842c88fbcfe00d4e5dde96048f630e",
              "versionType": "git"
            },
            {
              "lessThan": "e1fd0c42acfa22bb34d2ab6a111484f466ab8093",
              "status": "affected",
              "version": "8a8633978b842c88fbcfe00d4e5dde96048f630e",
              "versionType": "git"
            },
            {
              "lessThan": "4e910dbe36508654a896d5735b318c0b88172570",
              "status": "affected",
              "version": "8a8633978b842c88fbcfe00d4e5dde96048f630e",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/qlogic/qede/qede_fp.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.18"
            },
            {
              "lessThan": "4.18",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.238",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.189",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.111",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.34",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.16.*",
              "status": "unaffected",
              "version": "5.16.20",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.17.*",
              "status": "unaffected",
              "version": "5.17.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "5.18",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.19.238",
                  "versionStartIncluding": "4.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.4.189",
                  "versionStartIncluding": "4.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.111",
                  "versionStartIncluding": "4.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.34",
                  "versionStartIncluding": "4.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.16.20",
                  "versionStartIncluding": "4.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.17.3",
                  "versionStartIncluding": "4.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.18",
                  "versionStartIncluding": "4.18",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nqede: confirm skb is allocated before using\n\nqede_build_skb() assumes build_skb() always works and goes straight\nto skb_reserve(). However, build_skb() can fail under memory pressure.\nThis results in a kernel panic because the skb to reserve is NULL.\n\nAdd a check in case build_skb() failed to allocate and return NULL.\n\nThe NULL return is handled correctly in callers to qede_build_skb()."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:N - qede is the QLogic/Marvell FastLinQ Ethernet NIC RX path (qede_msix_fp_int \u2192 NAPI qede_poll \u2192 qede_rx_int \u2192 qede_rx_process_cqe \u2192 qede_rx_build_skb \u2192 qede_build_skb), reached when frames arrive on internet-facing servers and cloud VFs; a remote peer triggers it by sending packets.\nAC:L - build_skb() uses GFP_ATOMIC and fails under atomic allocation pressure that a sustained packet flood readily creates, and frames larger than the 256-byte rx_copybreak (or TPA/GRO) deterministically take the vulnerable path; the attacker drives both reachability and the failure condition.\nPR:N - NIC receive and NAPI softirq processing run on every inbound frame with no authentication, capability check, or local account required.\nUI:N - Reception and NAPI polling proceed automatically whenever the qede interface is up; no victim action such as opening a file or mounting a filesystem is needed.\nS:U - The NULL dereference and resulting oops remain inside the host kernel that owns the qede driver; no VM escape, IOMMU bypass, or other cross-authority boundary is crossed.\nC:N - skb_reserve() on a NULL skb is a pure NULL pointer dereference of fixed struct offsets below mmap_min_addr with no OOB read, UAF reclaim, or other disclosure primitive.\nI:N - The fault stores through a NULL skb pointer and aborts immediately without modifying attacker-influenced kernel objects, so there is no write primitive or control-flow hijack.\nA:H - The NULL dereference in skb_reserve() causes a kernel oops/panic in softirq/NAPI context, which is a full availability impact under kernel CVSS guidance."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T08:53:47.633Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/9648adb1b3ece55c657d3a4f52bfee663b710dfe"
        },
        {
          "url": "https://git.kernel.org/stable/c/034a92c6a81048128fc7b18d278d52438a13902a"
        },
        {
          "url": "https://git.kernel.org/stable/c/8928239e5e2e460d95b8a0b89f61671625e7ece0"
        },
        {
          "url": "https://git.kernel.org/stable/c/c9bdce2359b5f4986eb38d1e81865b3586cc20d2"
        },
        {
          "url": "https://git.kernel.org/stable/c/b2d6b3db9d1cf80908964036dbe1c52a86b1afb1"
        },
        {
          "url": "https://git.kernel.org/stable/c/e1fd0c42acfa22bb34d2ab6a111484f466ab8093"
        },
        {
          "url": "https://git.kernel.org/stable/c/4e910dbe36508654a896d5735b318c0b88172570"
        }
      ],
      "title": "qede: confirm skb is allocated before using",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-49084",
    "datePublished": "2025-02-26T01:54:43.099Z",
    "dateReserved": "2025-02-26T01:49:39.248Z",
    "dateUpdated": "2026-08-05T08:53:47.633Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

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.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.