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

CVE-2026-89479 (GCVE-0-2026-89479)

Vulnerability from cvelistv5 – Published: 2026-09-11 19:43 – Updated: 2026-09-14 12:00
VLAI
Title
sctp: stop processing a packet once its association is deleted
Summary
In the Linux kernel, the following vulnerability has been resolved: sctp: stop processing a packet once its association is deleted sctp_endpoint_bh_rcv() looks the association up only when chunk->asoc is NULL, and caches the result in chunk->asoc and chunk->transport without taking a reference. A packet that matches no association is handed to the endpoint, so a peer can bundle COOKIE ECHO, SHUTDOWN and SHUTDOWN ACK in one packet. The COOKIE ECHO creates the association, the SHUTDOWN chunk caches it, and with the outqueue empty the SHUTDOWN ACK reaches sctp_sf_do_9_2_final(), so the association and its transports are freed. The endpoint loop has no counterpart to the asoc->base.dead check in sctp_assoc_bh_rcv(). The next chunk writes to last_time_heard in the freed transport and is then passed to sctp_do_sm() with the freed association. The transport is freed through RCU, so this needs the packet to come off the socket backlog, where the loop runs in task context. The endpoint loop cannot do the same check: it holds no reference on the association, so reading asoc->base.dead would itself be a use-after-free. Mark the packet for discard in the command interpreter, just before it deletes the association. That is also before sctp_inq_free() releases the chunk on the association receive path. sctp_sf_do_5_2_4_dupcook() issues SCTP_CMD_DELETE_TCB for the temporary association, while the one the packet belongs to stays alive. A restarting peer can bundle DATA behind its COOKIE ECHO, so compare against chunk->asoc and leave that case alone.
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: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 7d970353eeb98f46a3b9dc602850e4f6336a9889 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 09c3b193a3e8fe53e1f416e2f8e3283d2a785405 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < ed85fe91a61bc0e0da6b585c07102b20f4cc65a0 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 5c0b2dbbdafc9eeeb11fffe1e46551fc3b55d8ee (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < ee3f04cf566f6041aa9a0360494fd8db5ade383a (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < fa306a40e716c5abcd967475459ce1ebd56e5115 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < a713e1b3a265f180ad25a08e17be15d67a2f7149 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 47e15a8d12e366d0d261bcbc394394f44418938d (git)
guessed Create a notification for this product.
Linux Linux Affected: 2.6.12
Unaffected: 0 , < 2.6.12 (semver)
Unaffected: 5.10.270 , ≤ 5.10.* (semver)
Unaffected: 5.15.221 , ≤ 5.15.* (semver)
Unaffected: 6.1.188 , ≤ 6.1.* (semver)
Unaffected: 6.6.157 , ≤ 6.6.* (semver)
Unaffected: 6.12.109 , ≤ 6.12.* (semver)
Unaffected: 6.18.50 , ≤ 6.18.* (semver)
Unaffected: 7.2.4 , ≤ 7.2.* (semver)
Unaffected: 7.3-rc1 , ≤ * (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/sm_sideeffect.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "7d970353eeb98f46a3b9dc602850e4f6336a9889",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "09c3b193a3e8fe53e1f416e2f8e3283d2a785405",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "ed85fe91a61bc0e0da6b585c07102b20f4cc65a0",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "5c0b2dbbdafc9eeeb11fffe1e46551fc3b55d8ee",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "ee3f04cf566f6041aa9a0360494fd8db5ade383a",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "fa306a40e716c5abcd967475459ce1ebd56e5115",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "a713e1b3a265f180ad25a08e17be15d67a2f7149",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "47e15a8d12e366d0d261bcbc394394f44418938d",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/sctp/sm_sideeffect.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.12"
            },
            {
              "lessThan": "2.6.12",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.270",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.221",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.188",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.157",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.109",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.50",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.270",
                  "versionStartIncluding": "2.6.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.221",
                  "versionStartIncluding": "2.6.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.188",
                  "versionStartIncluding": "2.6.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.157",
                  "versionStartIncluding": "2.6.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.109",
                  "versionStartIncluding": "2.6.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.50",
                  "versionStartIncluding": "2.6.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2.4",
                  "versionStartIncluding": "2.6.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.3-rc1",
                  "versionStartIncluding": "2.6.12",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsctp: stop processing a packet once its association is deleted\n\nsctp_endpoint_bh_rcv() looks the association up only when chunk-\u003easoc is\nNULL, and caches the result in chunk-\u003easoc and chunk-\u003etransport without\ntaking a reference.\n\nA packet that matches no association is handed to the endpoint, so a peer\ncan bundle COOKIE ECHO, SHUTDOWN and SHUTDOWN ACK in one packet. The\nCOOKIE ECHO creates the association, the SHUTDOWN chunk caches it, and\nwith the outqueue empty the SHUTDOWN ACK reaches sctp_sf_do_9_2_final(),\nso the association and its transports are freed.\n\nThe endpoint loop has no counterpart to the asoc-\u003ebase.dead check in\nsctp_assoc_bh_rcv(). The next chunk writes to last_time_heard in the freed\ntransport and is then passed to sctp_do_sm() with the freed association.\nThe transport is freed through RCU, so this needs the packet to come off\nthe socket backlog, where the loop runs in task context.\n\nThe endpoint loop cannot do the same check: it holds no reference on the\nassociation, so reading asoc-\u003ebase.dead would itself be a use-after-free.\nMark the packet for discard in the command interpreter, just before it\ndeletes the association. That is also before sctp_inq_free() releases the\nchunk on the association receive path.\n\nsctp_sf_do_5_2_4_dupcook() issues SCTP_CMD_DELETE_TCB for the temporary\nassociation, while the one the packet belongs to stays alive. A restarting\npeer can bundle DATA behind its COOKIE ECHO, so compare against\nchunk-\u003easoc and leave that case alone."
        }
      ],
      "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 UAF is reached from sctp_rcv() when a remote peer sends a bundled SCTP packet (COOKIE-ECHO, SHUTDOWN, SHUTDOWN-ACK, then another chunk) to a listening internet-facing SCTP endpoint; no local syscall or link-local medium is required.\nAC:L - The attacker fully controls the four-way handshake and the bundled chunk order that creates, caches, then deletes the association in one packet; forcing that packet onto the socket backlog is done with concurrent associations or recv/accept load the attacker generates, with no victim-only race.\nPR:N - COOKIE-ECHO is the unauthenticated SCTP handshake completion using only the INIT-ACK cookie as anti-spoofing; a network peer needs no Linux account, capability, or namespace privilege on the victim host.\nUI:N - The kernel automatically processes inbound SCTP chunks in sctp_endpoint_bh_rcv()/sctp_do_sm(); no victim mount, file open, or other interactive action is required.\nS:U - Impact is kernel heap use-after-free of sctp_association/sctp_transport on the host; it does not cross a VM, container, or IOMMU boundary.\nC:H - After DELETE_TCB the next bundled chunk reads freed asoc-\u003estate and other association fields and is passed into sctp_do_sm(); UAF of these slab objects enables heap grooming for arbitrary kernel disclosure.\nI:H - The same loop writes last_time_heard on the RCU-freed transport and mutates freed asoc fields (stats, last_data_from) before sctp_do_sm() runs with the dangling pointer, yielding a standard UAF write/control-flow primitive.\nA:H - Dereferencing the freed association and transport in the endpoint receive loop can oops or panic the kernel, and a remote peer can repeat the bundled packet against any listening SCTP service."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-14T12:00:16.005Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/7d970353eeb98f46a3b9dc602850e4f6336a9889"
        },
        {
          "url": "https://git.kernel.org/stable/c/09c3b193a3e8fe53e1f416e2f8e3283d2a785405"
        },
        {
          "url": "https://git.kernel.org/stable/c/ed85fe91a61bc0e0da6b585c07102b20f4cc65a0"
        },
        {
          "url": "https://git.kernel.org/stable/c/5c0b2dbbdafc9eeeb11fffe1e46551fc3b55d8ee"
        },
        {
          "url": "https://git.kernel.org/stable/c/ee3f04cf566f6041aa9a0360494fd8db5ade383a"
        },
        {
          "url": "https://git.kernel.org/stable/c/fa306a40e716c5abcd967475459ce1ebd56e5115"
        },
        {
          "url": "https://git.kernel.org/stable/c/a713e1b3a265f180ad25a08e17be15d67a2f7149"
        },
        {
          "url": "https://git.kernel.org/stable/c/47e15a8d12e366d0d261bcbc394394f44418938d"
        }
      ],
      "title": "sctp: stop processing a packet once its association is deleted",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-89479",
    "datePublished": "2026-09-11T19:43:35.263Z",
    "dateReserved": "2026-09-11T19:38:34.711Z",
    "dateUpdated": "2026-09-14T12:00:16.005Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-89479",
      "date": "2026-09-15",
      "epss": "0.00506",
      "percentile": "0.41789"
    },
    "microsoft_vex": {
      "current_release_date": "2026-09-14T14:49:09.000Z",
      "cve": "CVE-2026-89479",
      "id": "msrc_CVE-2026-89479",
      "initial_release_date": "2026-09-13T01:03:28.000Z",
      "product_status:known_affected": "1",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "sctp: stop processing a packet once its association is deleted",
      "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-89479.json",
      "version": "2"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-89479\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-09-11T20:19:29.337\",\"lastModified\":\"2026-09-14T13:19:04.457\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nsctp: stop processing a packet once its association is deleted\\n\\nsctp_endpoint_bh_rcv() looks the association up only when chunk-\u003easoc is\\nNULL, and caches the result in chunk-\u003easoc and chunk-\u003etransport without\\ntaking a reference.\\n\\nA packet that matches no association is handed to the endpoint, so a peer\\ncan bundle COOKIE ECHO, SHUTDOWN and SHUTDOWN ACK in one packet. The\\nCOOKIE ECHO creates the association, the SHUTDOWN chunk caches it, and\\nwith the outqueue empty the SHUTDOWN ACK reaches sctp_sf_do_9_2_final(),\\nso the association and its transports are freed.\\n\\nThe endpoint loop has no counterpart to the asoc-\u003ebase.dead check in\\nsctp_assoc_bh_rcv(). The next chunk writes to last_time_heard in the freed\\ntransport and is then passed to sctp_do_sm() with the freed association.\\nThe transport is freed through RCU, so this needs the packet to come off\\nthe socket backlog, where the loop runs in task context.\\n\\nThe endpoint loop cannot do the same check: it holds no reference on the\\nassociation, so reading asoc-\u003ebase.dead would itself be a use-after-free.\\nMark the packet for discard in the command interpreter, just before it\\ndeletes the association. That is also before sctp_inq_free() releases the\\nchunk on the association receive path.\\n\\nsctp_sf_do_5_2_4_dupcook() issues SCTP_CMD_DELETE_TCB for the temporary\\nassociation, while the one the packet belongs to stays alive. A restarting\\npeer can bundle DATA behind its COOKIE ECHO, so compare against\\nchunk-\u003easoc and leave that case alone.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"net/sctp/sm_sideeffect.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\",\"lessThan\":\"7d970353eeb98f46a3b9dc602850e4f6336a9889\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\",\"lessThan\":\"09c3b193a3e8fe53e1f416e2f8e3283d2a785405\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\",\"lessThan\":\"ed85fe91a61bc0e0da6b585c07102b20f4cc65a0\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\",\"lessThan\":\"5c0b2dbbdafc9eeeb11fffe1e46551fc3b55d8ee\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\",\"lessThan\":\"ee3f04cf566f6041aa9a0360494fd8db5ade383a\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\",\"lessThan\":\"fa306a40e716c5abcd967475459ce1ebd56e5115\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\",\"lessThan\":\"a713e1b3a265f180ad25a08e17be15d67a2f7149\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\",\"lessThan\":\"47e15a8d12e366d0d261bcbc394394f44418938d\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"net/sctp/sm_sideeffect.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"2.6.12\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"2.6.12\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.270\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.221\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.188\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.157\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.109\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.50\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.2.4\",\"lessThanOrEqual\":\"7.2.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.3-rc1\",\"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/09c3b193a3e8fe53e1f416e2f8e3283d2a785405\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/47e15a8d12e366d0d261bcbc394394f44418938d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/5c0b2dbbdafc9eeeb11fffe1e46551fc3b55d8ee\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/7d970353eeb98f46a3b9dc602850e4f6336a9889\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/a713e1b3a265f180ad25a08e17be15d67a2f7149\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/ed85fe91a61bc0e0da6b585c07102b20f4cc65a0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/ee3f04cf566f6041aa9a0360494fd8db5ade383a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/fa306a40e716c5abcd967475459ce1ebd56e5115\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "Important",
      "current_release_date": "2026-09-13T06:49:23+00:00",
      "cve": "CVE-2026-89479",
      "id": "CVE-2026-89479",
      "initial_release_date": "2026-09-11T19:43:35.263000+00:00",
      "product_status:known_affected": "2",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: Linux kernel (SCTP): Denial of service via use-after-free in packet processing",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89479.json",
      "version": "3"
    }
  }
}



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.