{"cve":"CVE-2022-49728","nvd":{"published":"2025-02-26T07:01:48.433","modified":"2026-06-17T05:18:59.157","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nipv6: Fix signed integer overflow in __ip6_append_data\n\nResurrect ubsan overflow checks and ubsan report this warning,\nfix it by change the variable [length] type to size_t.\n\nUBSAN: signed-integer-overflow in net/ipv6/ip6_output.c:1489:19\n2147479552 + 8567 cannot be represented in type 'int'\nCPU: 0 PID: 253 Comm: err Not tainted 5.16.0+ #1\nHardware name: linux,dummy-virt (DT)\nCall trace:\n  dump_backtrace+0x214/0x230\n  show_stack+0x30/0x78\n  dump_stack_lvl+0xf8/0x118\n  dump_stack+0x18/0x30\n  ubsan_epilogue+0x18/0x60\n  handle_overflow+0xd0/0xf0\n  __ubsan_handle_add_overflow+0x34/0x44\n  __ip6_append_data.isra.48+0x1598/0x1688\n  ip6_append_data+0x128/0x260\n  udpv6_sendmsg+0x680/0xdd0\n  inet6_sendmsg+0x54/0x90\n  sock_sendmsg+0x70/0x88\n  ____sys_sendmsg+0xe8/0x368\n  ___sys_sendmsg+0x98/0xe0\n  __sys_sendmmsg+0xf4/0x3b8\n  __arm64_sys_sendmmsg+0x34/0x48\n  invoke_syscall+0x64/0x160\n  el0_svc_common.constprop.4+0x124/0x300\n  do_el0_svc+0x44/0xc8\n  el0_svc+0x3c/0x1e8\n  el0t_64_sync_handler+0x88/0xb0\n  el0t_64_sync+0x16c/0x170\n\nChanges since v1:\n-Change the variable [length] type to unsigned, as Eric Dumazet suggested.\nChanges since v2:\n-Don't change exthdrlen type in ip6_make_skb, as Paolo Abeni suggested.\nChanges since v3:\n-Don't change ulen type in udpv6_sendmsg and l2tp_ip6_sendmsg, as\nJakub Kicinski suggested.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":5.5},"cwes":["CWE-190"],"references":["https://git.kernel.org/stable/c/70549c80fe80ac4e2a22068c76ebebced24f7e74","https://git.kernel.org/stable/c/84dc940890e91e42898e4443a093281702440abf","https://git.kernel.org/stable/c/f26422eabeb517629568edf8c2dd9c6cb9147584","https://git.kernel.org/stable/c/f93431c86b631bbca5614c66f966bf3ddb3c2803","https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T21:59:48.811064707+00:00"},"epss":{"cve":"CVE-2022-49728","score":0.00295,"percentile":0.22168,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}