{"id":"CVE-2025-37894","url":"https://www.cyber-defence.io/tools/cve/CVE-2025-37894","generatedAt":"2026-10-28T10:35:43.443Z","title":"In the Linux kernel, the following vulnerability has been resolved: net: use sock_gen_put() when sk_state is TCP_TIME_WAIT It is possible for a pointer of type struct inet_timewait_sock to be returned from the functions __inet_lookup_established() and…","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: use sock_gen_put() when sk_state is TCP_TIME_WAIT\n\nIt is possible for a pointer of type struct inet_timewait_sock to be\nreturned from the functions __inet_lookup_established() and\n__inet6_lookup_established(). This can cause a crash when the\nreturned pointer is of type struct inet_timewait_sock and\nsock_put() is called on it. The following is a crash call stack that\nshows sk->sk_wmem_alloc being accessed in sk_free() during the call to\nsock_put() on a struct inet_timewait_sock pointer. To avoid this issue,\nuse sock_gen_put() instead of sock_put() when sk->sk_state\nis TCP_TIME_WAIT.\n\nmrdump.ko        ipanic() + 120\nvmlinux          notifier_call_chain(nr_to_call=-1, nr_calls=0) + 132\nvmlinux          atomic_notifier_call_chain(val=0) + 56\nvmlinux          panic() + 344\nvmlinux          add_taint() + 164\nvmlinux          end_report() + 136\nvmlinux          kasan_report(size=0) + 236\nvmlinux          report_tag_fault() + 16\nvmlinux          do_tag_recovery() + 16\nvmlinux          __do_kernel_fault() + 88\nvmlinux          do_bad_area() + 28\nvmlinux          do_tag_check_fault() + 60\nvmlinux          do_mem_abort() + 80\nvmlinux          el1_abort() + 56\nvmlinux          el1h_64_sync_handler() + 124\nvmlinux        > 0xFFFFFFC080011294()\nvmlinux          __lse_atomic_fetch_add_release(v=0xF2FFFF82A896087C)\nvmlinux          __lse_atomic_fetch_sub_release(v=0xF2FFFF82A896087C)\nvmlinux          arch_atomic_fetch_sub_release(i=1, v=0xF2FFFF82A896087C)\n+ 8\nvmlinux          raw_atomic_fetch_sub_release(i=1, v=0xF2FFFF82A896087C)\n+ 8\nvmlinux          atomic_fetch_sub_release(i=1, v=0xF2FFFF82A896087C) + 8\nvmlinux          __refcount_sub_and_test(i=1, r=0xF2FFFF82A896087C,\noldp=0) + 8\nvmlinux          __refcount_dec_and_test(r=0xF2FFFF82A896087C, oldp=0) + 8\nvmlinux          refcount_dec_and_test(r=0xF2FFFF82A896087C) + 8\nvmlinux          sk_free(sk=0xF2FFFF82A8960700) + 28\nvmlinux          sock_put() + 48\nvmlinux          tcp6_check_fraglist_gro() + 236\nvmlinux          tcp6_gro_receive() + 624\nvmlinux          ipv6_gro_receive() + 912\nvmlinux          dev_gro_receive() + 1116\nvmlinux          napi_gro_receive() + 196\nccmni.ko         ccmni_rx_callback() + 208\nccmni.ko         ccmni_queue_recv_skb() + 388\nccci_dpmaif.ko   dpmaif_rxq_push_thread() + 1088\nvmlinux          kthread() + 268\nvmlinux          0xFFFFFFC08001F30C()","published":"2025-05-20T16:15:26.000Z","lastModified":"2026-07-30T06:22:30.000Z","status":"Modified","sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","cvss":{"version":"3.1","score":5.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"},"cwe":["CWE-476"],"affected":["linux/linux kernel"],"epss":{"score":0.00486,"percentile":0.41664,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.49%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://git.kernel.org/stable/c/786650e644c5b1c063921799ca203c0b8670d79a","tags":["Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/c0dba059b118b5206e755042b15b49368a388898","tags":["Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/f920436a44295ca791ebb6dae3f4190142eec703","tags":["Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2025-37894","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}