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CVE-2024-50125 (GCVE-0-2024-50125)

Vulnerability from cvelistv5 – Published: 2024-11-05 17:10 – Updated: 2026-08-19 16:27
VLAI
Title
Bluetooth: SCO: Fix UAF on sco_sock_timeout
Summary
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: SCO: Fix UAF on sco_sock_timeout conn->sk maybe have been unlinked/freed while waiting for sco_conn_lock so this checks if the conn->sk is still valid by checking if it part of sco_sk_list.
Severity
8 (High)
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-12-11 14:25 UTC
CWE
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: a1073aad497d0d071a71f61b721966a176d50c08 , < 678386459ffc07d2fbfbfe33456013786975cfef (git)
Affected: ba316be1b6a00db7126ed9a39f9bee434a508043 , < 74a466a15731a754bcd8b5a83c126b5122e15a45 (git)
Affected: ba316be1b6a00db7126ed9a39f9bee434a508043 , < 9ddda5d967e84796e7df1b54a55f36b4b9f21079 (git)
Affected: ba316be1b6a00db7126ed9a39f9bee434a508043 , < d30803f6a972b5b9e26d1d43b583c7ec151de04b (git)
Affected: ba316be1b6a00db7126ed9a39f9bee434a508043 , < 80b05fbfa998480fb3d5299d93eab946f51e9c36 (git)
Affected: ba316be1b6a00db7126ed9a39f9bee434a508043 , < 1bf4470a3939c678fb822073e9ea77a0560bc6bb (git)
Affected: fea63ccd928c01573306983346588b26cffb5572 (git)
Affected: 48669c81a65628ef234cbdd91b9395952c7c27fe (git)
Affected: 37d7ae2b0578f2373674a755402ee722e96edc08 (git)
Affected: ec1f74319bb35c1c90c25014ec0f6ea6c3ca2134 (git)
Affected: b657bba82ff6a007d84fd076bd73b11131726a2b (git)
Affected: 5.10.67 , < 5.10.265 (semver)
Affected: 4.14.263 , < 4.15 (semver)
Affected: 4.19.207 , < 4.20 (semver)
Affected: 5.4.148 , < 5.5 (semver)
Affected: 5.13.19 , < 5.14 (semver)
Affected: 5.14.6 , < 5.15 (semver)
guessed Create a notification for this product.
Linux Linux Affected: 5.15
Unaffected: 0 , < 5.15 (semver)
Unaffected: 5.10.265 , ≤ 5.10.* (semver)
Unaffected: 5.15.181 , ≤ 5.15.* (semver)
Unaffected: 6.1.115 , ≤ 6.1.* (semver)
Unaffected: 6.6.59 , ≤ 6.6.* (semver)
Unaffected: 6.11.6 , ≤ 6.11.* (semver)
Unaffected: 6.12 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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                {
                  "lessThan": "9ddda5d967e84796e7df1b54a55f36b4b9f21079",
                  "status": "affected",
                  "version": "ba316be1b6a00db7126ed9a39f9bee434a508043",
                  "versionType": "git"
                },
                {
                  "lessThan": "d30803f6a972b5b9e26d1d43b583c7ec151de04b",
                  "status": "affected",
                  "version": "ba316be1b6a00db7126ed9a39f9bee434a508043",
                  "versionType": "git"
                },
                {
                  "lessThan": "80b05fbfa998480fb3d5299d93eab946f51e9c36",
                  "status": "affected",
                  "version": "ba316be1b6a00db7126ed9a39f9bee434a508043",
                  "versionType": "git"
                },
                {
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                  "status": "affected",
                  "version": "ba316be1b6a00db7126ed9a39f9bee434a508043",
                  "versionType": "git"
                },
                {
                  "status": "affected",
                  "version": "fea63ccd928c01573306983346588b26cffb5572",
                  "versionType": "git"
                },
                {
                  "status": "affected",
                  "version": "48669c81a65628ef234cbdd91b9395952c7c27fe",
                  "versionType": "git"
                },
                {
                  "status": "affected",
                  "version": "37d7ae2b0578f2373674a755402ee722e96edc08",
                  "versionType": "git"
                },
                {
                  "status": "affected",
                  "version": "ec1f74319bb35c1c90c25014ec0f6ea6c3ca2134",
                  "versionType": "git"
                },
                {
                  "status": "affected",
                  "version": "b657bba82ff6a007d84fd076bd73b11131726a2b",
                  "versionType": "git"
                },
                {
                  "lessThan": "5.10.265",
                  "status": "affected",
                  "version": "5.10.67",
                  "versionType": "semver"
                },
                {
                  "lessThan": "4.15",
                  "status": "affected",
                  "version": "4.14.263",
                  "versionType": "semver"
                },
                {
                  "lessThan": "4.20",
                  "status": "affected",
                  "version": "4.19.207",
                  "versionType": "semver"
                },
                {
                  "lessThan": "5.5",
                  "status": "affected",
                  "version": "5.4.148",
                  "versionType": "semver"
                },
                {
                  "lessThan": "5.14",
                  "status": "affected",
                  "version": "5.13.19",
                  "versionType": "semver"
                },
                {
                  "lessThan": "5.15",
                  "status": "affected",
                  "version": "5.14.6",
                  "versionType": "semver"
                }
              ]
            },
            {
              "defaultStatus": "affected",
              "product": "Linux",
              "programFiles": [
                "include/net/bluetooth/bluetooth.h",
                "net/bluetooth/af_bluetooth.c",
                "net/bluetooth/sco.c"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "status": "affected",
                  "version": "5.15"
                },
                {
                  "lessThan": "5.15",
                  "status": "unaffected",
                  "version": "0",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "5.10.*",
                  "status": "unaffected",
                  "version": "5.10.265",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "5.15.*",
                  "status": "unaffected",
                  "version": "5.15.181",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.1.*",
                  "status": "unaffected",
                  "version": "6.1.115",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.6.*",
                  "status": "unaffected",
                  "version": "6.6.59",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.11.*",
                  "status": "unaffected",
                  "version": "6.11.6",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "*",
                  "status": "unaffected",
                  "version": "6.12",
                  "versionType": "original_commit_for_fix"
                }
              ]
            }
          ],
          "cpeApplicability": [
            {
              "nodes": [
                {
                  "cpeMatch": [
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.10.265",
                      "versionStartIncluding": "5.10.67",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.15.181",
                      "versionStartIncluding": "5.15",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.1.115",
                      "versionStartIncluding": "5.15",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.6.59",
                      "versionStartIncluding": "5.15",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.11.6",
                      "versionStartIncluding": "5.15",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.12",
                      "versionStartIncluding": "5.15",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionStartIncluding": "4.14.263",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionStartIncluding": "4.19.207",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionStartIncluding": "5.4.148",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionStartIncluding": "5.13.19",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionStartIncluding": "5.14.6",
                      "vulnerable": true
                    }
                  ],
                  "negate": false,
                  "operator": "OR"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: SCO: Fix UAF on sco_sock_timeout\n\nconn-\u003esk maybe have been unlinked/freed while waiting for sco_conn_lock\nso this checks if the conn-\u003esk is still valid by checking if it part of\nsco_sk_list."
            }
          ],
          "metrics": [
            {
              "cvssV3_1": {
                "baseScore": 8,
                "baseSeverity": "HIGH",
                "vectorString": "CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.1"
              },
              "scenarios": [
                {
                  "lang": "en",
                  "value": "AV:A - The vulnerable path lives in the Bluetooth SCO stack and only executes when `conn-\u003ehcon` is non-NULL, i.e. an actual SCO/eSCO link exists with an in-range Bluetooth peer; `sco_conn_del()` (the second patched call site) is driven directly by `sco_connect_cfm`/`sco_disconn_cfm` from the adjacent device. Bluetooth radio proximity is required, matching the Adjacent classification.\nAC:L - The attacker controls both sides of the race: `SO_SNDTIMEO` sets `sk-\u003esk_sndtimeo`, which `sco_connect()` passes verbatim to `sco_sock_set_timer()`, so the timeout work can be scheduled to fire at an arbitrarily chosen moment and raced against `close()`, and `sco_sock_clear_timer()` uses non-sync `cancel_delayed_work()` so an in-flight work item is never waited for. syzbot produced a reproducer and confirmed the fix.\nPR:L - There is no `capable()` or `CAP_NET_*` check anywhere in `sco_sock_create/bind/listen/connect`, so any unprivileged local user can create SCO sockets and drive the connect/close sequence that frees the socket. Only basic local account access is needed, not root.\nUI:N - The whole sequence \u2014 socket creation, `SO_SNDTIMEO`, connect, close \u2014 is performed by the attacker\u0027s own process against a system Bluetooth adapter. No victim action is required.\nS:U - The use-after-free corrupts kernel heap memory within the same kernel security authority; there is no VM, IOMMU, or sandbox boundary crossed.\nC:H - A use-after-free on `struct sock` lets the attacker respray the freed slab object and read back its contents through subsequent socket operations, giving a path to arbitrary kernel memory disclosure.\nI:H - The stale pointer is written through \u2014 `sock_hold()` performs an atomic increment on freed memory and `sk-\u003esk_err = ETIMEDOUT` writes into it \u2014 and `sk-\u003esk_state_change(sk)` performs an indirect call through a function pointer read from the freed object, providing a control-flow hijack primitive.\nA:H - Even without successful exploitation the UAF produces a KASAN splat / kernel oops or panic in `sco_sock_timeout()`, and it can be triggered repeatedly by an unprivileged process."
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-08-19T16:27:45.098Z",
            "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "shortName": "Linux"
          },
          "references": [
            {
              "url": "https://git.kernel.org/stable/c/678386459ffc07d2fbfbfe33456013786975cfef"
            },
            {
              "url": "https://git.kernel.org/stable/c/74a466a15731a754bcd8b5a83c126b5122e15a45"
            },
            {
              "url": "https://git.kernel.org/stable/c/9ddda5d967e84796e7df1b54a55f36b4b9f21079"
            },
            {
              "url": "https://git.kernel.org/stable/c/d30803f6a972b5b9e26d1d43b583c7ec151de04b"
            },
            {
              "url": "https://git.kernel.org/stable/c/80b05fbfa998480fb3d5299d93eab946f51e9c36"
            },
            {
              "url": "https://git.kernel.org/stable/c/1bf4470a3939c678fb822073e9ea77a0560bc6bb"
            }
          ],
          "title": "Bluetooth: SCO: Fix UAF on sco_sock_timeout",
          "x_generator": {
            "engine": "bippy-1.2.0"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "assignerShortName": "Linux",
        "cveId": "CVE-2024-50125",
        "datePublished": "2024-11-05T17:10:53.090Z",
        "dateReserved": "2024-10-21T19:36:19.954Z",
        "dateUpdated": "2026-08-19T16:27:45.098Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.


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.