GCVE Workshop - 22 September 2026 (14:00-18:00), Luxembourg Before The Vulnopticon Conference - Registration

CVE-2026-74586 (GCVE-0-2026-74586)

Vulnerability from cvelistv5 – Published: 2026-08-22 15:31 – Updated: 2026-08-25 05:40
VLAI
Title
sctp: clear new_transport when removing a peer
Summary
In the Linux kernel, the following vulnerability has been resolved: sctp: clear new_transport when removing a peer sctp_process_asconf_param() stores a newly added peer transport in asoc->new_transport. After all parameters in the ASCONF chunk have been processed, sctp_sf_do_asconf() uses this pointer to send a HEARTBEAT to the new transport. An authenticated ASCONF from a remote SCTP peer can add a transport and remove it again with a wildcard DEL-IP parameter in the same chunk. The wildcard deletion preserves the transport on which the ASCONF arrived, but removes the newly added transport through sctp_assoc_del_nonprimary_peers(). The removal does not clear asoc->new_transport, leaving it pointing to the removed transport. sctp_sf_do_asconf() then creates a HEARTBEAT whose chunk->transport points to the removed transport without holding a transport reference. During local address replacement, src_out_of_asoc_ok keeps this HEARTBEAT on control_chunk_list. After the transport is freed by RCU, a successful ASCONF_ACK for the replacement address releases the queued HEARTBEAT and sctp_outq_select_transport() reads the freed transport's state. The issue was found during a static audit of SCTP objects. With an authenticated peer, the reproducer triggered the same KASAN report in 2 of 2 unpatched runs on a KASAN-enabled netdev/main kernel: BUG: KASAN: slab-use-after-free in sctp_outq_select_transport Read of size 4 at addr ffff88800b9bd95c by task python3/197 Call Trace: sctp_outq_select_transport+0x549/0x8b0 [sctp] sctp_outq_flush+0x306/0x2c60 [sctp] sctp_transport_immediate_rtx+0xaf/0x260 [sctp] sctp_process_asconf_ack+0xa48/0xf70 [sctp] Allocated by task 197: sctp_transport_new+0x68/0x650 [sctp] sctp_assoc_add_peer+0x258/0x12a0 [sctp] sctp_process_asconf+0x5e9/0x1090 [sctp] Last potentially related work creation: __call_rcu_common.constprop.0+0x77/0xb70 sctp_assoc_del_nonprimary_peers+0x7c/0xd0 [sctp] sctp_process_asconf+0xd9c/0x1090 [sctp] The first invalid access was a four-byte read of transport->state at net/sctp/outqueue.c:833. The same reproducer completed the full authenticated ASCONF and local-address replacement sequence with this change without a KASAN report or oops. Clear new_transport when its peer is removed, before it can be used to create the HEARTBEAT.
Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 6af29ccc223b0feb6fc6112281c3fa3cdb1afddf , < c0f973bb5118dd1b146cda3fcc8af6f6057befec (git)
Affected: 6af29ccc223b0feb6fc6112281c3fa3cdb1afddf , < 3b539b317cd052236fed0350364ff1268996ba46 (git)
Affected: 6af29ccc223b0feb6fc6112281c3fa3cdb1afddf , < db9d8e3b670f841755bc2018f178472dc6064d27 (git)
Affected: 6af29ccc223b0feb6fc6112281c3fa3cdb1afddf , < 31efa656cf6aface26e88f038c14f22ee6ca1500 (git)
Affected: 6af29ccc223b0feb6fc6112281c3fa3cdb1afddf , < 291accf36febce751021888de5f15090f4875b56 (git)
Affected: 6af29ccc223b0feb6fc6112281c3fa3cdb1afddf , < ca33df36aa0143a1d04f57d2086020c12e7eddb7 (git)
Affected: 6af29ccc223b0feb6fc6112281c3fa3cdb1afddf , < 163847552a571bd55094291f4ffcdc1de0f14a7b (git)
Affected: 6af29ccc223b0feb6fc6112281c3fa3cdb1afddf , < beb33f8ee1ca83acddb2a5ae80f3d22ec550b4c3 (git)
guessed Create a notification for this product.
Linux Linux Affected: 3.2
Unaffected: 0 , < 3.2 (semver)
Unaffected: 5.10.265 , ≤ 5.10.* (semver)
Unaffected: 5.15.216 , ≤ 5.15.* (semver)
Unaffected: 6.1.183 , ≤ 6.1.* (semver)
Unaffected: 6.6.152 , ≤ 6.6.* (semver)
Unaffected: 6.12.104 , ≤ 6.12.* (semver)
Unaffected: 6.18.45 , ≤ 6.18.* (semver)
Unaffected: 7.1.9 , ≤ 7.1.* (semver)
Unaffected: 7.2 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/sctp/associola.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "c0f973bb5118dd1b146cda3fcc8af6f6057befec",
              "status": "affected",
              "version": "6af29ccc223b0feb6fc6112281c3fa3cdb1afddf",
              "versionType": "git"
            },
            {
              "lessThan": "3b539b317cd052236fed0350364ff1268996ba46",
              "status": "affected",
              "version": "6af29ccc223b0feb6fc6112281c3fa3cdb1afddf",
              "versionType": "git"
            },
            {
              "lessThan": "db9d8e3b670f841755bc2018f178472dc6064d27",
              "status": "affected",
              "version": "6af29ccc223b0feb6fc6112281c3fa3cdb1afddf",
              "versionType": "git"
            },
            {
              "lessThan": "31efa656cf6aface26e88f038c14f22ee6ca1500",
              "status": "affected",
              "version": "6af29ccc223b0feb6fc6112281c3fa3cdb1afddf",
              "versionType": "git"
            },
            {
              "lessThan": "291accf36febce751021888de5f15090f4875b56",
              "status": "affected",
              "version": "6af29ccc223b0feb6fc6112281c3fa3cdb1afddf",
              "versionType": "git"
            },
            {
              "lessThan": "ca33df36aa0143a1d04f57d2086020c12e7eddb7",
              "status": "affected",
              "version": "6af29ccc223b0feb6fc6112281c3fa3cdb1afddf",
              "versionType": "git"
            },
            {
              "lessThan": "163847552a571bd55094291f4ffcdc1de0f14a7b",
              "status": "affected",
              "version": "6af29ccc223b0feb6fc6112281c3fa3cdb1afddf",
              "versionType": "git"
            },
            {
              "lessThan": "beb33f8ee1ca83acddb2a5ae80f3d22ec550b4c3",
              "status": "affected",
              "version": "6af29ccc223b0feb6fc6112281c3fa3cdb1afddf",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/sctp/associola.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.2"
            },
            {
              "lessThan": "3.2",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.265",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.216",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.183",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.152",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.104",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.45",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.9",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.265",
                  "versionStartIncluding": "3.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.216",
                  "versionStartIncluding": "3.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.183",
                  "versionStartIncluding": "3.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.152",
                  "versionStartIncluding": "3.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.104",
                  "versionStartIncluding": "3.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.45",
                  "versionStartIncluding": "3.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1.9",
                  "versionStartIncluding": "3.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2",
                  "versionStartIncluding": "3.2",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsctp: clear new_transport when removing a peer\n\nsctp_process_asconf_param() stores a newly added peer transport in\nasoc-\u003enew_transport. After all parameters in the ASCONF chunk have been\nprocessed, sctp_sf_do_asconf() uses this pointer to send a HEARTBEAT to the\nnew transport.\n\nAn authenticated ASCONF from a remote SCTP peer can add a transport and\nremove it again with a wildcard DEL-IP parameter in the same chunk. The\nwildcard deletion preserves the transport on which the ASCONF arrived, but\nremoves the newly added transport through\nsctp_assoc_del_nonprimary_peers(). The removal does not clear\nasoc-\u003enew_transport, leaving it pointing to the removed transport.\n\nsctp_sf_do_asconf() then creates a HEARTBEAT whose chunk-\u003etransport points\nto the removed transport without holding a transport reference. During\nlocal address replacement, src_out_of_asoc_ok keeps this HEARTBEAT on\ncontrol_chunk_list. After the transport is freed by RCU, a successful\nASCONF_ACK for the replacement address releases the queued HEARTBEAT and\nsctp_outq_select_transport() reads the freed transport\u0027s state.\n\nThe issue was found during a static audit of SCTP objects. With an\nauthenticated peer, the reproducer triggered the same KASAN report in 2\nof 2 unpatched runs on a KASAN-enabled netdev/main kernel:\n\n  BUG: KASAN: slab-use-after-free in sctp_outq_select_transport\n  Read of size 4 at addr ffff88800b9bd95c by task python3/197\n\n  Call Trace:\n   sctp_outq_select_transport+0x549/0x8b0 [sctp]\n   sctp_outq_flush+0x306/0x2c60 [sctp]\n   sctp_transport_immediate_rtx+0xaf/0x260 [sctp]\n   sctp_process_asconf_ack+0xa48/0xf70 [sctp]\n\n  Allocated by task 197:\n   sctp_transport_new+0x68/0x650 [sctp]\n   sctp_assoc_add_peer+0x258/0x12a0 [sctp]\n   sctp_process_asconf+0x5e9/0x1090 [sctp]\n\n  Last potentially related work creation:\n   __call_rcu_common.constprop.0+0x77/0xb70\n   sctp_assoc_del_nonprimary_peers+0x7c/0xd0 [sctp]\n   sctp_process_asconf+0xd9c/0x1090 [sctp]\n\nThe first invalid access was a four-byte read of transport-\u003estate at\nnet/sctp/outqueue.c:833. The same reproducer completed the full\nauthenticated ASCONF and local-address replacement sequence with this\nchange without a KASAN report or oops.\n\nClear new_transport when its peer is removed, before it can be used to\ncreate the HEARTBEAT."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:N - The bug is triggered when a remote SCTP peer sends an authenticated ASCONF chunk that is processed via sctp_rcv() through the state machine into sctp_sf_do_asconf() and sctp_process_asconf(); this is standard network packet handling, not a local syscall or ioctl path.\nAC:L - The remote peer fully controls a single ASCONF containing ADD_IP followed by wildcard DEL-IP to add then remove a transport while leaving asoc-\u003enew_transport dangling; combined with routine SCTP local address replacement (src_out_of_asoc_ok), the KASAN reproducer hit the UAF in 2/2 runs.\nPR:N - Exploitation requires only being an established SCTP association peer sending SCTP-AUTH-protected ASCONF traffic negotiated during the normal handshake (or addip_noauth); no Linux account, capability, or init-namespace privilege is needed on the victim host.\nUI:N - No victim user action such as opening a file or mounting a filesystem is required; the kernel automatically processes attacker-crafted ASCONF packets on an existing SCTP association during normal server operation.\nS:U - Impact is confined to kernel heap corruption on the vulnerable host (slab UAF on sctp_transport) and potential privilege escalation within that kernel; it does not cross VM, container, or IOMMU security boundaries.\nC:H - KASAN reports slab-use-after-free with a 4-byte read of freed sctp_transport-\u003estate in sctp_outq_select_transport(); UAF on heap transport objects enables grooming for arbitrary kernel memory disclosure per kernel CVSS guidance.\nI:H - The dangling sctp_transport pointer is embedded in a queued HEARTBEAT control chunk without a reference; UAF on this heap object can be leveraged via heap spraying for arbitrary kernel writes and control-flow hijacking, not merely a bounded corruption.\nA:H - Dereferencing the freed transport during sctp_outq_flush() causes a reproducible kernel UAF/oops; remote peers can repeatedly trigger this against SCTP endpoints handling ADD-IP traffic, yielding denial of service or crash."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-25T05:40:12.552Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/c0f973bb5118dd1b146cda3fcc8af6f6057befec"
        },
        {
          "url": "https://git.kernel.org/stable/c/3b539b317cd052236fed0350364ff1268996ba46"
        },
        {
          "url": "https://git.kernel.org/stable/c/db9d8e3b670f841755bc2018f178472dc6064d27"
        },
        {
          "url": "https://git.kernel.org/stable/c/31efa656cf6aface26e88f038c14f22ee6ca1500"
        },
        {
          "url": "https://git.kernel.org/stable/c/291accf36febce751021888de5f15090f4875b56"
        },
        {
          "url": "https://git.kernel.org/stable/c/ca33df36aa0143a1d04f57d2086020c12e7eddb7"
        },
        {
          "url": "https://git.kernel.org/stable/c/163847552a571bd55094291f4ffcdc1de0f14a7b"
        },
        {
          "url": "https://git.kernel.org/stable/c/beb33f8ee1ca83acddb2a5ae80f3d22ec550b4c3"
        }
      ],
      "title": "sctp: clear new_transport when removing a peer",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-74586",
    "datePublished": "2026-08-22T15:31:39.094Z",
    "dateReserved": "2026-08-15T05:44:03.918Z",
    "dateUpdated": "2026-08-25T05:40:12.552Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-74586",
      "date": "2026-09-16",
      "epss": "0.005",
      "percentile": "0.4159"
    },
    "microsoft_vex": {
      "current_release_date": "2026-09-11T01:54:19.000Z",
      "cve": "CVE-2026-74586",
      "id": "msrc_CVE-2026-74586",
      "initial_release_date": "2026-08-24T01:02:33.000Z",
      "product_status:fixed": "1",
      "product_status:known_affected": "1",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "sctp: clear new_transport when removing a peer",
      "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-74586.json",
      "version": "3"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-74586\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-08-22T16:16:30.687\",\"lastModified\":\"2026-08-25T06:18:32.713\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nsctp: clear new_transport when removing a peer\\n\\nsctp_process_asconf_param() stores a newly added peer transport in\\nasoc-\u003enew_transport. After all parameters in the ASCONF chunk have been\\nprocessed, sctp_sf_do_asconf() uses this pointer to send a HEARTBEAT to the\\nnew transport.\\n\\nAn authenticated ASCONF from a remote SCTP peer can add a transport and\\nremove it again with a wildcard DEL-IP parameter in the same chunk. The\\nwildcard deletion preserves the transport on which the ASCONF arrived, but\\nremoves the newly added transport through\\nsctp_assoc_del_nonprimary_peers(). The removal does not clear\\nasoc-\u003enew_transport, leaving it pointing to the removed transport.\\n\\nsctp_sf_do_asconf() then creates a HEARTBEAT whose chunk-\u003etransport points\\nto the removed transport without holding a transport reference. During\\nlocal address replacement, src_out_of_asoc_ok keeps this HEARTBEAT on\\ncontrol_chunk_list. After the transport is freed by RCU, a successful\\nASCONF_ACK for the replacement address releases the queued HEARTBEAT and\\nsctp_outq_select_transport() reads the freed transport\u0027s state.\\n\\nThe issue was found during a static audit of SCTP objects. With an\\nauthenticated peer, the reproducer triggered the same KASAN report in 2\\nof 2 unpatched runs on a KASAN-enabled netdev/main kernel:\\n\\n  BUG: KASAN: slab-use-after-free in sctp_outq_select_transport\\n  Read of size 4 at addr ffff88800b9bd95c by task python3/197\\n\\n  Call Trace:\\n   sctp_outq_select_transport+0x549/0x8b0 [sctp]\\n   sctp_outq_flush+0x306/0x2c60 [sctp]\\n   sctp_transport_immediate_rtx+0xaf/0x260 [sctp]\\n   sctp_process_asconf_ack+0xa48/0xf70 [sctp]\\n\\n  Allocated by task 197:\\n   sctp_transport_new+0x68/0x650 [sctp]\\n   sctp_assoc_add_peer+0x258/0x12a0 [sctp]\\n   sctp_process_asconf+0x5e9/0x1090 [sctp]\\n\\n  Last potentially related work creation:\\n   __call_rcu_common.constprop.0+0x77/0xb70\\n   sctp_assoc_del_nonprimary_peers+0x7c/0xd0 [sctp]\\n   sctp_process_asconf+0xd9c/0x1090 [sctp]\\n\\nThe first invalid access was a four-byte read of transport-\u003estate at\\nnet/sctp/outqueue.c:833. The same reproducer completed the full\\nauthenticated ASCONF and local-address replacement sequence with this\\nchange without a KASAN report or oops.\\n\\nClear new_transport when its peer is removed, before it can be used to\\ncreate the HEARTBEAT.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"net/sctp/associola.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"6af29ccc223b0feb6fc6112281c3fa3cdb1afddf\",\"lessThan\":\"c0f973bb5118dd1b146cda3fcc8af6f6057befec\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"6af29ccc223b0feb6fc6112281c3fa3cdb1afddf\",\"lessThan\":\"3b539b317cd052236fed0350364ff1268996ba46\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"6af29ccc223b0feb6fc6112281c3fa3cdb1afddf\",\"lessThan\":\"db9d8e3b670f841755bc2018f178472dc6064d27\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"6af29ccc223b0feb6fc6112281c3fa3cdb1afddf\",\"lessThan\":\"31efa656cf6aface26e88f038c14f22ee6ca1500\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"6af29ccc223b0feb6fc6112281c3fa3cdb1afddf\",\"lessThan\":\"291accf36febce751021888de5f15090f4875b56\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"6af29ccc223b0feb6fc6112281c3fa3cdb1afddf\",\"lessThan\":\"ca33df36aa0143a1d04f57d2086020c12e7eddb7\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"6af29ccc223b0feb6fc6112281c3fa3cdb1afddf\",\"lessThan\":\"163847552a571bd55094291f4ffcdc1de0f14a7b\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"6af29ccc223b0feb6fc6112281c3fa3cdb1afddf\",\"lessThan\":\"beb33f8ee1ca83acddb2a5ae80f3d22ec550b4c3\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"net/sctp/associola.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"3.2\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"3.2\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.265\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.216\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.183\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.152\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.104\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.45\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.1.9\",\"lessThanOrEqual\":\"7.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.2\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":9.8,\"baseSeverity\":\"CRITICAL\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":3.9,\"impactScore\":5.9}]},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/163847552a571bd55094291f4ffcdc1de0f14a7b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/291accf36febce751021888de5f15090f4875b56\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/31efa656cf6aface26e88f038c14f22ee6ca1500\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/3b539b317cd052236fed0350364ff1268996ba46\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/beb33f8ee1ca83acddb2a5ae80f3d22ec550b4c3\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/c0f973bb5118dd1b146cda3fcc8af6f6057befec\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/ca33df36aa0143a1d04f57d2086020c12e7eddb7\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/db9d8e3b670f841755bc2018f178472dc6064d27\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "Important",
      "current_release_date": "2026-08-25T06:02:38+00:00",
      "cve": "CVE-2026-74586",
      "id": "CVE-2026-74586",
      "initial_release_date": "2026-08-22T00:00:00+00:00",
      "product_status:known_affected": "260",
      "product_status:under_investigation": "14",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: sctp: clear new_transport when removing a peer",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-74586.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-15T01:18:23Z",
      "cve": "CVE-2026-74586",
      "id": "CVE-2026-74586",
      "initial_release_date": "2026-08-23T00:06:29Z",
      "product_status:known_affected": "353",
      "product_status:known_not_affected": "4",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-74586",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-74586.json",
      "version": "8"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





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.