fkie_nvd - fkie_cve-2023-53296

FKIE_CVE-2023-53296

Vulnerability from fkie_nvd - Published: 2025-09-16 08:15 - Updated: 2025-12-02 19:27

Severity ?

5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Summary

In the Linux kernel, the following vulnerability has been resolved: sctp: check send stream number after wait_for_sndbuf This patch fixes a corner case where the asoc out stream count may change after wait_for_sndbuf. When the main thread in the client starts a connection, if its out stream count is set to N while the in stream count in the server is set to N - 2, another thread in the client keeps sending the msgs with stream number N - 1, and waits for sndbuf before processing INIT_ACK. However, after processing INIT_ACK, the out stream count in the client is shrunk to N - 2, the same to the in stream count in the server. The crash occurs when the thread waiting for sndbuf is awake and sends the msg in a non-existing stream(N - 1), the call trace is as below: KASAN: null-ptr-deref in range [0x0000000000000038-0x000000000000003f] Call Trace: <TASK> sctp_cmd_send_msg net/sctp/sm_sideeffect.c:1114 [inline] sctp_cmd_interpreter net/sctp/sm_sideeffect.c:1777 [inline] sctp_side_effects net/sctp/sm_sideeffect.c:1199 [inline] sctp_do_sm+0x197d/0x5310 net/sctp/sm_sideeffect.c:1170 sctp_primitive_SEND+0x9f/0xc0 net/sctp/primitive.c:163 sctp_sendmsg_to_asoc+0x10eb/0x1a30 net/sctp/socket.c:1868 sctp_sendmsg+0x8d4/0x1d90 net/sctp/socket.c:2026 inet_sendmsg+0x9d/0xe0 net/ipv4/af_inet.c:825 sock_sendmsg_nosec net/socket.c:722 [inline] sock_sendmsg+0xde/0x190 net/socket.c:745 The fix is to add an unlikely check for the send stream number after the thread wakes up from the wait_for_sndbuf.

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/0443fff49d6352160c200064156c25898bd9f58c	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/2584024b23552c00d95b50255e47bd18d306d31a	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/667eb99cf7c15fe5b0ecefe75cf658e20ef20c9f	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/9346a1a21142357972a6f466ba6275ddc54b04ac	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/a615e7270318fa0b98bf1ff38daf6cf52d840312	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/b4b6dfad41aaae9e36e44327b18d5cf4b20dd2ce	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/d2128636b303aa9cf065055402ee6697409a8837	Patch

Impacted products

Vendor	Product	Version
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	6.3
linux	linux_kernel	6.3
linux	linux_kernel	6.3
linux	linux_kernel	6.3
linux	linux_kernel	6.3

JSON

To clipboard

{
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      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsctp: check send stream number after wait_for_sndbuf\n\nThis patch fixes a corner case where the asoc out stream count may change\nafter wait_for_sndbuf.\n\nWhen the main thread in the client starts a connection, if its out stream\ncount is set to N while the in stream count in the server is set to N - 2,\nanother thread in the client keeps sending the msgs with stream number\nN - 1, and waits for sndbuf before processing INIT_ACK.\n\nHowever, after processing INIT_ACK, the out stream count in the client is\nshrunk to N - 2, the same to the in stream count in the server. The crash\noccurs when the thread waiting for sndbuf is awake and sends the msg in a\nnon-existing stream(N - 1), the call trace is as below:\n\n  KASAN: null-ptr-deref in range [0x0000000000000038-0x000000000000003f]\n  Call Trace:\n   \u003cTASK\u003e\n   sctp_cmd_send_msg net/sctp/sm_sideeffect.c:1114 [inline]\n   sctp_cmd_interpreter net/sctp/sm_sideeffect.c:1777 [inline]\n   sctp_side_effects net/sctp/sm_sideeffect.c:1199 [inline]\n   sctp_do_sm+0x197d/0x5310 net/sctp/sm_sideeffect.c:1170\n   sctp_primitive_SEND+0x9f/0xc0 net/sctp/primitive.c:163\n   sctp_sendmsg_to_asoc+0x10eb/0x1a30 net/sctp/socket.c:1868\n   sctp_sendmsg+0x8d4/0x1d90 net/sctp/socket.c:2026\n   inet_sendmsg+0x9d/0xe0 net/ipv4/af_inet.c:825\n   sock_sendmsg_nosec net/socket.c:722 [inline]\n   sock_sendmsg+0xde/0x190 net/socket.c:745\n\nThe fix is to add an unlikely check for the send stream number after the\nthread wakes up from the wait_for_sndbuf."
    }
  ],
  "id": "CVE-2023-53296",
  "lastModified": "2025-12-02T19:27:01.233",
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          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
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          "version": "3.1"
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        "impactScore": 3.6,
        "source": "nvd@nist.gov",
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      }
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  "published": "2025-09-16T08:15:38.937",
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  "vulnStatus": "Analyzed",
  "weaknesses": [
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          "value": "CWE-476"
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      "source": "nvd@nist.gov",
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  ]
}

CVE-2023-53296 (GCVE-0-2023-53296)

Vulnerability from cvelistv5 – Published: 2025-09-16 08:11 – Updated: 2025-09-16 08:11

Summary

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/9346a1a2114235797…
	https://git.kernel.org/stable/c/0443fff49d6352160…
	https://git.kernel.org/stable/c/b4b6dfad41aaae9e3…
	https://git.kernel.org/stable/c/667eb99cf7c15fe5b…
	https://git.kernel.org/stable/c/d2128636b303aa9cf…
	https://git.kernel.org/stable/c/a615e7270318fa0b9…
	https://git.kernel.org/stable/c/2584024b23552c00d…

Impacted products

Vendor

Product

Version

Linux

Affected: 5bbbbe32a43199c2b9ea5ea66fab6241c64beb51 , < 9346a1a21142357972a6f466ba6275ddc54b04ac (git)
Affected: 5bbbbe32a43199c2b9ea5ea66fab6241c64beb51 , < 0443fff49d6352160c200064156c25898bd9f58c (git)
Affected: 5bbbbe32a43199c2b9ea5ea66fab6241c64beb51 , < b4b6dfad41aaae9e36e44327b18d5cf4b20dd2ce (git)
Affected: 5bbbbe32a43199c2b9ea5ea66fab6241c64beb51 , < 667eb99cf7c15fe5b0ecefe75cf658e20ef20c9f (git)
Affected: 5bbbbe32a43199c2b9ea5ea66fab6241c64beb51 , < d2128636b303aa9cf065055402ee6697409a8837 (git)
Affected: 5bbbbe32a43199c2b9ea5ea66fab6241c64beb51 , < a615e7270318fa0b98bf1ff38daf6cf52d840312 (git)
Affected: 5bbbbe32a43199c2b9ea5ea66fab6241c64beb51 , < 2584024b23552c00d95b50255e47bd18d306d31a (git)

Linux

Affected: 4.15
Unaffected: 0 , < 4.15 (semver)
Unaffected: 4.19.281 , ≤ 4.19.* (semver)
Unaffected: 5.4.241 , ≤ 5.4.* (semver)
Unaffected: 5.10.178 , ≤ 5.10.* (semver)
Unaffected: 5.15.107 , ≤ 5.15.* (semver)
Unaffected: 6.1.24 , ≤ 6.1.* (semver)
Unaffected: 6.2.11 , ≤ 6.2.* (semver)
Unaffected: 6.3 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/sctp/socket.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
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              "status": "unaffected",
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              "versionType": "semver"
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              "status": "unaffected",
              "version": "6.2.11",
              "versionType": "semver"
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsctp: check send stream number after wait_for_sndbuf\n\nThis patch fixes a corner case where the asoc out stream count may change\nafter wait_for_sndbuf.\n\nWhen the main thread in the client starts a connection, if its out stream\ncount is set to N while the in stream count in the server is set to N - 2,\nanother thread in the client keeps sending the msgs with stream number\nN - 1, and waits for sndbuf before processing INIT_ACK.\n\nHowever, after processing INIT_ACK, the out stream count in the client is\nshrunk to N - 2, the same to the in stream count in the server. The crash\noccurs when the thread waiting for sndbuf is awake and sends the msg in a\nnon-existing stream(N - 1), the call trace is as below:\n\n  KASAN: null-ptr-deref in range [0x0000000000000038-0x000000000000003f]\n  Call Trace:\n   \u003cTASK\u003e\n   sctp_cmd_send_msg net/sctp/sm_sideeffect.c:1114 [inline]\n   sctp_cmd_interpreter net/sctp/sm_sideeffect.c:1777 [inline]\n   sctp_side_effects net/sctp/sm_sideeffect.c:1199 [inline]\n   sctp_do_sm+0x197d/0x5310 net/sctp/sm_sideeffect.c:1170\n   sctp_primitive_SEND+0x9f/0xc0 net/sctp/primitive.c:163\n   sctp_sendmsg_to_asoc+0x10eb/0x1a30 net/sctp/socket.c:1868\n   sctp_sendmsg+0x8d4/0x1d90 net/sctp/socket.c:2026\n   inet_sendmsg+0x9d/0xe0 net/ipv4/af_inet.c:825\n   sock_sendmsg_nosec net/socket.c:722 [inline]\n   sock_sendmsg+0xde/0x190 net/socket.c:745\n\nThe fix is to add an unlikely check for the send stream number after the\nthread wakes up from the wait_for_sndbuf."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-09-16T08:11:28.519Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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        },
        {
          "url": "https://git.kernel.org/stable/c/2584024b23552c00d95b50255e47bd18d306d31a"
        }
      ],
      "title": "sctp: check send stream number after wait_for_sndbuf",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2023-53296",
    "datePublished": "2025-09-16T08:11:28.519Z",
    "dateReserved": "2025-09-16T08:09:37.993Z",
    "dateUpdated": "2025-09-16T08:11:28.519Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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

FKIE_CVE-2023-53296

CVE-2023-53296 (GCVE-0-2023-53296)

Tags

Sightings

Nomenclature