{"id":"CVE-2026-74469","title":"sctp: prevent peer transport count overflow","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nsctp: prevent peer transport count overflow\n\nsctp_assoc_add_peer() increments the association's 16-bit transport_count\nfor every new unique peer. Adding the 65,536th tr…","severity":"high","cvss":8.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cvssSource":"cna","vendor":"Linux","product":"Linux","affected":["Linux >= 8f840e47f190cbe61a96945c13e9551048d42cef < b453e00da1211e997b82743d28af7714c59c05c8","Linux >= 8f840e47f190cbe61a96945c13e9551048d42cef < dfea32dd76f390e3155177b0038cc47b01386198","Linux >= 8f840e47f190cbe61a96945c13e9551048d42cef < 80f48523a0fe42db2e7375dff4e38a25c117090a","Linux >= 8f840e47f190cbe61a96945c13e9551048d42cef < 546221b86ceeba0d8fec92d46a0604bb7b62be07","Linux >= 8f840e47f190cbe61a96945c13e9551048d42cef < 09e722030e8148ba4ed1e42c6b2ea57bda9f9895","Linux >= 8f840e47f190cbe61a96945c13e9551048d42cef < 4ba5bf7ed50f235ea4581de8e7a0002f4ed287b0","Linux >= 8f840e47f190cbe61a96945c13e9551048d42cef < 6201cd1d70f1670c5b31ac506e7ab2fa7b8e7f75","Linux >= 8f840e47f190cbe61a96945c13e9551048d42cef < bd0e9289e2642f6a5c54faad304ce0f41e926d22","Linux 4.7"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-10-16T18:57:13.238914Z"},"exploitAvailable":true,"published":"2026-08-15","updated":"2026-10-16","sourceUpdated":"2026-10-16T19:05:47.493Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-74469","references":[{"url":"https://git.kernel.org/stable/c/b453e00da1211e997b82743d28af7714c59c05c8"},{"url":"https://git.kernel.org/stable/c/dfea32dd76f390e3155177b0038cc47b01386198"},{"url":"https://git.kernel.org/stable/c/80f48523a0fe42db2e7375dff4e38a25c117090a"},{"url":"https://git.kernel.org/stable/c/546221b86ceeba0d8fec92d46a0604bb7b62be07"},{"url":"https://git.kernel.org/stable/c/09e722030e8148ba4ed1e42c6b2ea57bda9f9895"},{"url":"https://git.kernel.org/stable/c/4ba5bf7ed50f235ea4581de8e7a0002f4ed287b0"},{"url":"https://git.kernel.org/stable/c/6201cd1d70f1670c5b31ac506e7ab2fa7b8e7f75"},{"url":"https://git.kernel.org/stable/c/bd0e9289e2642f6a5c54faad304ce0f41e926d22"}],"tags":["cve.org","exploit-available"],"epss":0.01467,"epssPercentile":0.73258,"exploits":{"github":3,"githubRepos":["https://github.com/suominen/diagspill","https://github.com/0xBlackash/CVE-2026-74469","https://github.com/HORKimhab/CVE-2026-74469"],"checkedAt":"2026-10-16T19:46:58.899Z"},"ingestedAt":"2026-10-16T19:46:24.359Z","slug":"CVE-2026-74469","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nsctp: prevent peer transport count overflow\n\nsctp_assoc_add_peer() increments the association's 16-bit transport_count\nfor every new unique peer. Adding the 65,536th transport wraps the count to\nzero.\n\nSCTP sock_diag uses transport_count to reserve the INET_DIAG_PEERS payload,\nthen copies one sockaddr_storage for every entry in transport_addr_list.\nAfter the wrap, a diagnostic dump reserves an empty payload and writes\n8 MiB of peer addresses past the skb tail.\n\nReject a new unique peer when transport_count has reached U16_MAX. Perform\nthe check after the existing-peer lookup so a duplicate address continues\nto return its existing transport at the limit.\n\n## Affected\n\n- `Linux >= 8f840e47f190cbe61a96945c13e9551048d42cef < b453e00da1211e997b82743d28af7714c59c05c8`\n- `Linux >= 8f840e47f190cbe61a96945c13e9551048d42cef < dfea32dd76f390e3155177b0038cc47b01386198`\n- `Linux >= 8f840e47f190cbe61a96945c13e9551048d42cef < 80f48523a0fe42db2e7375dff4e38a25c117090a`\n- `Linux >= 8f840e47f190cbe61a96945c13e9551048d42cef < 546221b86ceeba0d8fec92d46a0604bb7b62be07`\n- `Linux >= 8f840e47f190cbe61a96945c13e9551048d42cef < 09e722030e8148ba4ed1e42c6b2ea57bda9f9895`\n- `Linux >= 8f840e47f190cbe61a96945c13e9551048d42cef < 4ba5bf7ed50f235ea4581de8e7a0002f4ed287b0`\n- `Linux >= 8f840e47f190cbe61a96945c13e9551048d42cef < 6201cd1d70f1670c5b31ac506e7ab2fa7b8e7f75`\n- `Linux >= 8f840e47f190cbe61a96945c13e9551048d42cef < bd0e9289e2642f6a5c54faad304ce0f41e926d22`\n- `Linux 4.7`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":61,"depthScoreParts":{"impact":48.4,"likelihood":0.3,"exploitation":12,"ransomware":0},"changes":[]}