CVE-2022-49325 (GCVE-0-2022-49325)
Vulnerability from cvelistv5
Published
2025-02-26 02:10
Modified
2025-05-04 08:35
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: tcp: add accessors to read/set tp->snd_cwnd We had various bugs over the years with code breaking the assumption that tp->snd_cwnd is greater than zero. Lately, syzbot reported the WARN_ON_ONCE(!tp->prior_cwnd) added in commit 8b8a321ff72c ("tcp: fix zero cwnd in tcp_cwnd_reduction") can trigger, and without a repro we would have to spend considerable time finding the bug. Instead of complaining too late, we want to catch where and when tp->snd_cwnd is set to an illegal value.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3308676ec525901bf1656014003c443a60730a04Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/40570375356c874b1578e05c1dcc3ff7c1322dbePatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/41e191fe72282e193a7744e2fc1786b23156c9e4Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5aba0ad44fb4a7fb78c5076c313456de199a3c29Patch
Impacted products
Vendor Product Version
Linux Linux Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
 Create a notification for this product.
   Linux Linux Create a notification for this product.
Show details on NVD website

To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "include/net/tcp.h",
            "include/trace/events/tcp.h",
            "net/core/filter.c",
            "net/ipv4/tcp.c",
            "net/ipv4/tcp_bbr.c",
            "net/ipv4/tcp_bic.c",
            "net/ipv4/tcp_cdg.c",
            "net/ipv4/tcp_cong.c",
            "net/ipv4/tcp_cubic.c",
            "net/ipv4/tcp_dctcp.c",
            "net/ipv4/tcp_highspeed.c",
            "net/ipv4/tcp_htcp.c",
            "net/ipv4/tcp_hybla.c",
            "net/ipv4/tcp_illinois.c",
            "net/ipv4/tcp_input.c",
            "net/ipv4/tcp_ipv4.c",
            "net/ipv4/tcp_lp.c",
            "net/ipv4/tcp_metrics.c",
            "net/ipv4/tcp_nv.c",
            "net/ipv4/tcp_output.c",
            "net/ipv4/tcp_rate.c",
            "net/ipv4/tcp_scalable.c",
            "net/ipv4/tcp_vegas.c",
            "net/ipv4/tcp_veno.c",
            "net/ipv4/tcp_westwood.c",
            "net/ipv4/tcp_yeah.c",
            "net/ipv6/tcp_ipv6.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "3308676ec525901bf1656014003c443a60730a04",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "5aba0ad44fb4a7fb78c5076c313456de199a3c29",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "41e191fe72282e193a7744e2fc1786b23156c9e4",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "40570375356c874b1578e05c1dcc3ff7c1322dbe",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "include/net/tcp.h",
            "include/trace/events/tcp.h",
            "net/core/filter.c",
            "net/ipv4/tcp.c",
            "net/ipv4/tcp_bbr.c",
            "net/ipv4/tcp_bic.c",
            "net/ipv4/tcp_cdg.c",
            "net/ipv4/tcp_cong.c",
            "net/ipv4/tcp_cubic.c",
            "net/ipv4/tcp_dctcp.c",
            "net/ipv4/tcp_highspeed.c",
            "net/ipv4/tcp_htcp.c",
            "net/ipv4/tcp_hybla.c",
            "net/ipv4/tcp_illinois.c",
            "net/ipv4/tcp_input.c",
            "net/ipv4/tcp_ipv4.c",
            "net/ipv4/tcp_lp.c",
            "net/ipv4/tcp_metrics.c",
            "net/ipv4/tcp_nv.c",
            "net/ipv4/tcp_output.c",
            "net/ipv4/tcp_rate.c",
            "net/ipv4/tcp_scalable.c",
            "net/ipv4/tcp_vegas.c",
            "net/ipv4/tcp_veno.c",
            "net/ipv4/tcp_westwood.c",
            "net/ipv4/tcp_yeah.c",
            "net/ipv6/tcp_ipv6.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.47",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.17.*",
              "status": "unaffected",
              "version": "5.17.15",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.18.*",
              "status": "unaffected",
              "version": "5.18.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "5.19",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.47",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.17.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.18.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.19",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntcp: add accessors to read/set tp-\u003esnd_cwnd\n\nWe had various bugs over the years with code\nbreaking the assumption that tp-\u003esnd_cwnd is greater\nthan zero.\n\nLately, syzbot reported the WARN_ON_ONCE(!tp-\u003eprior_cwnd) added\nin commit 8b8a321ff72c (\"tcp: fix zero cwnd in tcp_cwnd_reduction\")\ncan trigger, and without a repro we would have to spend\nconsiderable time finding the bug.\n\nInstead of complaining too late, we want to catch where\nand when tp-\u003esnd_cwnd is set to an illegal value."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-05-04T08:35:14.345Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/3308676ec525901bf1656014003c443a60730a04"
        },
        {
          "url": "https://git.kernel.org/stable/c/5aba0ad44fb4a7fb78c5076c313456de199a3c29"
        },
        {
          "url": "https://git.kernel.org/stable/c/41e191fe72282e193a7744e2fc1786b23156c9e4"
        },
        {
          "url": "https://git.kernel.org/stable/c/40570375356c874b1578e05c1dcc3ff7c1322dbe"
        }
      ],
      "title": "tcp: add accessors to read/set tp-\u003esnd_cwnd",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-49325",
    "datePublished": "2025-02-26T02:10:48.158Z",
    "dateReserved": "2025-02-26T02:08:31.538Z",
    "dateUpdated": "2025-05-04T08:35:14.345Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2022-49325\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-02-26T07:01:09.323\",\"lastModified\":\"2025-09-22T20:51:09.373\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\ntcp: add accessors to read/set tp-\u003esnd_cwnd\\n\\nWe had various bugs over the years with code\\nbreaking the assumption that tp-\u003esnd_cwnd is greater\\nthan zero.\\n\\nLately, syzbot reported the WARN_ON_ONCE(!tp-\u003eprior_cwnd) added\\nin commit 8b8a321ff72c (\\\"tcp: fix zero cwnd in tcp_cwnd_reduction\\\")\\ncan trigger, and without a repro we would have to spend\\nconsiderable time finding the bug.\\n\\nInstead of complaining too late, we want to catch where\\nand when tp-\u003esnd_cwnd is set to an illegal value.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: tcp: agregar descriptores de acceso para leer/establecer tp-\u0026gt;snd_cwnd Tuvimos varios errores a lo largo de los a\u00f1os con c\u00f3digo que romp\u00eda la suposici\u00f3n de que tp-\u0026gt;snd_cwnd es mayor que cero. \u00daltimamente, syzbot inform\u00f3 que se puede activar WARN_ON_ONCE(!tp-\u0026gt;prior_cwnd) agregado en el commit 8b8a321ff72c (\\\"tcp: corregir cwnd cero en tcp_cwnd_reduction\\\"), y sin una reproducci\u00f3n tendr\u00edamos que dedicar un tiempo considerable a encontrar el error. En lugar de quejarnos demasiado tarde, queremos detectar d\u00f3nde y cu\u00e1ndo tp-\u0026gt;snd_cwnd se establece en un valor ilegal.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-617\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"5.15.47\",\"matchCriteriaId\":\"30EAD0EB-B3D1-4A88-A3D8-4F8242E81A01\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"5.17.15\",\"matchCriteriaId\":\"53E7AA2E-2FB4-45CA-A22B-08B4EDBB51AD\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.18\",\"versionEndExcluding\":\"5.18.4\",\"matchCriteriaId\":\"FA6D643C-6D6A-4821-8A8D-B5776B8F0103\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/3308676ec525901bf1656014003c443a60730a04\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/40570375356c874b1578e05c1dcc3ff7c1322dbe\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/41e191fe72282e193a7744e2fc1786b23156c9e4\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/5aba0ad44fb4a7fb78c5076c313456de199a3c29\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}"
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




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.