{"advisories":[{"id":"USN-8575-1","source":"usn","title":"Linux kernel vulnerabilities","url":"https://ubuntu.com/security/notices/USN-8575-1"},{"id":"USN-8576-1","source":"usn","title":"Linux kernel (NVIDIA Tegra) vulnerabilities","url":"https://ubuntu.com/security/notices/USN-8576-1"},{"id":"USN-8593-1","source":"usn","title":"Linux kernel vulnerabilities","url":"https://ubuntu.com/security/notices/USN-8593-1"},{"id":"USN-8575-2","source":"usn","title":"Linux kernel vulnerabilities","url":"https://ubuntu.com/security/notices/USN-8575-2"},{"id":"USN-8576-2","source":"usn","title":"Linux kernel (NVIDIA Tegra) vulnerabilities","url":"https://ubuntu.com/security/notices/USN-8576-2"},{"id":"USN-8575-3","source":"usn","title":"Linux kernel vulnerabilities","url":"https://ubuntu.com/security/notices/USN-8575-3"},{"id":"USN-8603-1","source":"usn","title":"Linux kernel (Azure) 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the Linux kernel, the following vulnerability has been resolved:\n\nvsock/vmci: fix UAF when peer resets connection during handshake\n\nvmci_transport_recv_connecting_server() returned err = 0 for a peer\nRST in its default switch arm:\n\n\terr = pkt->type == VMCI_TRANSPORT_PACKET_TYPE_RST ? 0 : -EINVAL;\n\nThat made vmci_transport_recv_listen() skip vsock_remove_pending(),\nleaving the pending socket on the listener's pending_links with\nsk_state = TCP_CLOSE while destroy: still dropped the explicit\nreference taken before schedule_delayed_work().\n\nOne second later vsock_pending_work() observed is_pending=true and\nperformed full cleanup: vsock_remove_pending() then the two trailing\nsock_put(sk) calls -- the first reached refcount 0 and __sk_freed\nthe socket, and the second wrote into the freed object:\n\n  BUG: KASAN: slab-use-after-free in refcount_warn_saturate\n  Write of size 4 at addr ffff88800b1cac80 by task kworker\n  Workqueue: events vsock_pending_work\n\nTreat peer RST like any other unexpected packet type (err = -EINVAL).\nAll destroy: arms now return err < 0, so vmci_transport_recv_listen()\nremoves pending from pending_links synchronously and\nvsock_pending_work() takes the is_pending=false / !rejected branch,\ndropping only its own work reference.  This also closes the\nmulti-packet race Sashiko reported on v2: pending is removed from\nthe list before any subsequent packet can find it.\n\nThe pre-existing sk_acceptq_removed() gap on the err < 0 path of\nvmci_transport_recv_listen() that Sashiko also noted is not\nintroduced or changed by this patch.\n\nTested on lts-6.12.79 with KASAN: 52/100 unpatched -> 0/100 patched.","metrics":{"cvssV2_0":{},"cvssV3_0":{},"cvssV3_1":{"score":8.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H"},"cvssV4_0":{}},"mitre_repo_path":"cves/2026/64xxx/CVE-2026-64115.json","references":["https://git.kernel.org/stable/c/1dd531e28f61edd286edc486ab068f135b5ae1eb","https://git.kernel.org/stable/c/1e19f08552b90070ed18bafb1763c78297823af6","https://git.kernel.org/stable/c/440447699c681e26ed58e9c309cad718270a18b4","https://git.kernel.org/stable/c/47e63077605c6c2aa45b3df9847a8cdc1f1f6ef9","https://git.kernel.org/stable/c/99e22ddf4edb63dc8382bc028af928056d3450cf","https://git.kernel.org/stable/c/9fe74e42914c851d68069713b7b917a9c33faf26","https://git.kernel.org/stable/c/cc27e989a5dfdfcfc1cca7c3be27a0c7532b46cb","https://git.kernel.org/stable/c/ecda37f8faab3220da199335e42564cb7a9ad145"],"title":"vsock/vmci: fix UAF when peer resets connection during handshake","updated":"2026-08-05T12:39:24.360000+00:00","vendors":["linux","linux$PRODUCT$linux_kernel"],"weaknesses":[]},"nvd":{"cpes":["cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:*","cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:*","cpe:2.3:o:linux:linux_kernel:7.1:rc3:*:*:*:*:*:*","cpe:2.3:o:linux:linux_kernel:7.1:rc4:*:*:*:*:*:*"],"created":"2026-07-19T16:17:52.967000+00:00","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nvsock/vmci: fix UAF when peer resets connection during handshake\n\nvmci_transport_recv_connecting_server() returned err = 0 for a peer\nRST in its default switch arm:\n\n\terr = pkt->type == VMCI_TRANSPORT_PACKET_TYPE_RST ? 0 : -EINVAL;\n\nThat made vmci_transport_recv_listen() skip vsock_remove_pending(),\nleaving the pending socket on the listener's pending_links with\nsk_state = TCP_CLOSE while destroy: still dropped the explicit\nreference taken before schedule_delayed_work().\n\nOne second later vsock_pending_work() observed is_pending=true and\nperformed full cleanup: vsock_remove_pending() then the two trailing\nsock_put(sk) calls -- the first reached refcount 0 and __sk_freed\nthe socket, and the second wrote into the freed object:\n\n  BUG: KASAN: slab-use-after-free in refcount_warn_saturate\n  Write of size 4 at addr ffff88800b1cac80 by task kworker\n  Workqueue: events vsock_pending_work\n\nTreat peer RST like any other unexpected packet type (err = -EINVAL).\nAll destroy: arms now return err < 0, so vmci_transport_recv_listen()\nremoves pending from pending_links synchronously and\nvsock_pending_work() takes the is_pending=false / !rejected branch,\ndropping only its own work reference.  This also closes the\nmulti-packet race Sashiko reported on v2: pending is removed from\nthe list before any subsequent packet can find it.\n\nThe pre-existing sk_acceptq_removed() gap on the err < 0 path of\nvmci_transport_recv_listen() that Sashiko also noted is not\nintroduced or changed by this patch.\n\nTested on lts-6.12.79 with KASAN: 52/100 unpatched -> 0/100 patched.","metrics":{"cvssV2_0":{},"cvssV3_0":{},"cvssV3_1":{"score":8.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H"},"cvssV4_0":{}},"nvd_repo_path":"2026/CVE-2026-64115.json","references":["https://git.kernel.org/stable/c/1dd531e28f61edd286edc486ab068f135b5ae1eb","https://git.kernel.org/stable/c/1e19f08552b90070ed18bafb1763c78297823af6","https://git.kernel.org/stable/c/440447699c681e26ed58e9c309cad718270a18b4","https://git.kernel.org/stable/c/47e63077605c6c2aa45b3df9847a8cdc1f1f6ef9","https://git.kernel.org/stable/c/99e22ddf4edb63dc8382bc028af928056d3450cf","https://git.kernel.org/stable/c/9fe74e42914c851d68069713b7b917a9c33faf26","https://git.kernel.org/stable/c/cc27e989a5dfdfcfc1cca7c3be27a0c7532b46cb","https://git.kernel.org/stable/c/ecda37f8faab3220da199335e42564cb7a9ad145"],"title":null,"updated":"2026-08-12T15:50:13.127000+00:00","vendors":["linux","linux$PRODUCT$linux_kernel"],"weaknesses":["CWE-416"]},"opencve":{"changes":[{"created":"2026-07-19T16:15:00+00:00","data":[{"details":{"new":"In the Linux kernel, the following vulnerability has been resolved:\n\nvsock/vmci: fix UAF when peer resets connection during handshake\n\nvmci_transport_recv_connecting_server() returned err = 0 for a peer\nRST in its default switch arm:\n\n\terr = pkt->type == VMCI_TRANSPORT_PACKET_TYPE_RST ? 0 : -EINVAL;\n\nThat made vmci_transport_recv_listen() skip vsock_remove_pending(),\nleaving the pending socket on the listener's pending_links with\nsk_state = TCP_CLOSE while destroy: still dropped the explicit\nreference taken before schedule_delayed_work().\n\nOne second later vsock_pending_work() observed is_pending=true and\nperformed full cleanup: vsock_remove_pending() then the two trailing\nsock_put(sk) calls -- the first reached refcount 0 and __sk_freed\nthe socket, and the second wrote into the freed object:\n\n  BUG: KASAN: slab-use-after-free in refcount_warn_saturate\n  Write of size 4 at addr ffff88800b1cac80 by task kworker\n  Workqueue: events vsock_pending_work\n\nTreat peer RST like any other unexpected packet type (err = -EINVAL).\nAll destroy: arms now return err < 0, so vmci_transport_recv_listen()\nremoves pending from pending_links synchronously and\nvsock_pending_work() takes the is_pending=false / !rejected branch,\ndropping only its own work reference.  This also closes the\nmulti-packet race Sashiko reported on v2: pending is removed from\nthe list before any subsequent packet can find it.\n\nThe pre-existing sk_acceptq_removed() gap on the err < 0 path of\nvmci_transport_recv_listen() that Sashiko also noted is not\nintroduced or changed by this patch.\n\nTested on lts-6.12.79 with KASAN: 52/100 unpatched -> 0/100 patched.","old":null},"type":"description"},{"details":{"new":"vsock/vmci: fix UAF when peer resets connection during handshake","old":null},"type":"title"},{"details":["linux","linux$PRODUCT$linux_kernel"],"type":"first_time"},{"details":{"added":["cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*"],"removed":[]},"type":"cpes"},{"details":{"added":["linux","linux$PRODUCT$linux_kernel"],"removed":[]},"type":"vendors"},{"details":{"added":["https://git.kernel.org/stable/c/1dd531e28f61edd286edc486ab068f135b5ae1eb","https://git.kernel.org/stable/c/1e19f08552b90070ed18bafb1763c78297823af6","https://git.kernel.org/stable/c/440447699c681e26ed58e9c309cad718270a18b4","https://git.kernel.org/stable/c/47e63077605c6c2aa45b3df9847a8cdc1f1f6ef9","https://git.kernel.org/stable/c/99e22ddf4edb63dc8382bc028af928056d3450cf","https://git.kernel.org/stable/c/9fe74e42914c851d68069713b7b917a9c33faf26","https://git.kernel.org/stable/c/cc27e989a5dfdfcfc1cca7c3be27a0c7532b46cb","https://git.kernel.org/stable/c/ecda37f8faab3220da199335e42564cb7a9ad145"],"removed":[]},"type":"references"}],"id":"dfb0f5ae-a461-46c5-8a57-3f525cb7b2b1"},{"created":"2026-07-20T12:15:00+00:00","data":[{"details":{"added":["CWE-787"],"removed":[]},"type":"weaknesses"},{"details":{"added":["https://lore.kernel.org/linux-cve-announce/2026071923-CVE-2026-64115-de9e@gregkh/T","https://nvd.nist.gov/vuln/detail/CVE-2026-64115","https://www.cve.org/CVERecord?id=CVE-2026-64115"],"removed":[]},"type":"references"},{"details":{"added":{"cvssV3_1":{"score":7.0,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H"}},"removed":{},"updated":{"threat_severity":{"new":"Moderate","old":null}}},"type":"metrics"}],"id":"987fae16-efcc-44fe-ab39-c8d4ddc716c7"},{"created":"2026-07-20T14:45:00+00:00","data":[{"details":{"added":{},"removed":{},"updated":{"cvssV3_1":{"new":{"score":8.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H"},"old":{"score":7.0,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H"}}}},"type":"metrics"}],"id":"e5a16e53-efa4-4cb2-b6cd-3c72aff96ce7"},{"created":"2026-08-12T16:00:00+00:00","data":[{"details":{"added":["CWE-416"],"removed":[]},"type":"weaknesses"},{"details":{"added":["cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:*","cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:*","cpe:2.3:o:linux:linux_kernel:7.1:rc3:*:*:*:*:*:*","cpe:2.3:o:linux:linux_kernel:7.1:rc4:*:*:*:*:*:*"],"removed":[]},"type":"cpes"}],"id":"0b7bd27b-d7a8-4208-a65a-ce9825526848"}],"cpes":{"data":["cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:*","cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:*","cpe:2.3:o:linux:linux_kernel:7.1:rc3:*:*:*:*:*:*","cpe:2.3:o:linux:linux_kernel:7.1:rc4:*:*:*:*:*:*"],"providers":["mitre","nvd"]},"created":{"data":"2026-07-19T00:00:00+00:00","provider":"redhat"},"description":{"data":"In the Linux kernel, the following vulnerability has been resolved:\n\nvsock/vmci: fix UAF when peer resets connection during handshake\n\nvmci_transport_recv_connecting_server() returned err = 0 for a peer\nRST in its default switch arm:\n\n\terr = pkt->type == VMCI_TRANSPORT_PACKET_TYPE_RST ? 0 : -EINVAL;\n\nThat made vmci_transport_recv_listen() skip vsock_remove_pending(),\nleaving the pending socket on the listener's pending_links with\nsk_state = TCP_CLOSE while destroy: still dropped the explicit\nreference taken before schedule_delayed_work().\n\nOne second later vsock_pending_work() observed is_pending=true and\nperformed full cleanup: vsock_remove_pending() then the two trailing\nsock_put(sk) calls -- the first reached refcount 0 and __sk_freed\nthe socket, and the second wrote into the freed object:\n\n  BUG: KASAN: slab-use-after-free in refcount_warn_saturate\n  Write of size 4 at addr ffff88800b1cac80 by task kworker\n  Workqueue: events vsock_pending_work\n\nTreat peer RST like any other unexpected packet type (err = -EINVAL).\nAll destroy: arms now return err < 0, so vmci_transport_recv_listen()\nremoves pending from pending_links synchronously and\nvsock_pending_work() takes the is_pending=false / !rejected branch,\ndropping only its own work reference.  This also closes the\nmulti-packet race Sashiko reported on v2: pending is removed from\nthe list before any subsequent packet can find it.\n\nThe pre-existing sk_acceptq_removed() gap on the err < 0 path of\nvmci_transport_recv_listen() that Sashiko also noted is not\nintroduced or changed by this patch.\n\nTested on lts-6.12.79 with KASAN: 52/100 unpatched -> 0/100 patched.","provider":"mitre"},"metrics":{"cvssV2_0":{"data":{},"provider":null},"cvssV3_0":{"data":{},"provider":null},"cvssV3_1":{"data":{"score":8.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H"},"provider":"mitre"},"cvssV4_0":{"data":{},"provider":null},"epss":{"data":{"score":0.00171},"provider":"first"},"kev":{"data":{},"provider":null},"ssvc":{"data":{},"provider":null},"threat_severity":{"data":"Moderate","provider":"redhat"}},"references":{"data":["https://git.kernel.org/stable/c/1dd531e28f61edd286edc486ab068f135b5ae1eb","https://git.kernel.org/stable/c/1e19f08552b90070ed18bafb1763c78297823af6","https://git.kernel.org/stable/c/440447699c681e26ed58e9c309cad718270a18b4","https://git.kernel.org/stable/c/47e63077605c6c2aa45b3df9847a8cdc1f1f6ef9","https://git.kernel.org/stable/c/99e22ddf4edb63dc8382bc028af928056d3450cf","https://git.kernel.org/stable/c/9fe74e42914c851d68069713b7b917a9c33faf26","https://git.kernel.org/stable/c/cc27e989a5dfdfcfc1cca7c3be27a0c7532b46cb","https://git.kernel.org/stable/c/ecda37f8faab3220da199335e42564cb7a9ad145","https://lore.kernel.org/linux-cve-announce/2026071923-CVE-2026-64115-de9e@gregkh/T","https://nvd.nist.gov/vuln/detail/CVE-2026-64115","https://www.cve.org/CVERecord?id=CVE-2026-64115"],"providers":["mitre","nvd","redhat"]},"title":{"data":"vsock/vmci: fix UAF when peer resets connection during handshake","provider":"mitre"},"updated":{"data":"2026-08-12T15:50:13.127000+00:00","provider":"nvd"},"vendors":{"data":["linux","linux$PRODUCT$linux_kernel"],"providers":["mitre","nvd","enrichment"]},"weaknesses":{"data":["CWE-416","CWE-787"],"providers":["nvd","redhat"]}},"redhat":{"cpes":[],"created":"2026-07-19T00:00:00+00:00","description":"A flaw was found in the `vsock/vmci` component of the Linux kernel. A remote attacker could exploit a Use-After-Free (UAF) vulnerability when a peer resets a connection during the handshake process. This occurs because the system incorrectly handles reset packets, leading to a pending socket being left in an invalid state. Exploiting this flaw could cause a system crash, resulting in a Denial of Service (DoS).","metrics":{"cvssV2_0":{},"cvssV3_0":{},"cvssV3_1":{"score":7.0,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H"},"threat_severity":"Moderate"},"redhat_repo_path":"2026/CVE-2026-64115.json","references":["https://lore.kernel.org/linux-cve-announce/2026071923-CVE-2026-64115-de9e@gregkh/T","https://nvd.nist.gov/vuln/detail/CVE-2026-64115","https://www.cve.org/CVERecord?id=CVE-2026-64115"],"title":"kernel: vsock/vmci: fix UAF when peer resets connection during handshake","updated":"2026-07-19T00:00:00+00:00","vendors":[],"weaknesses":["CWE-787"]}}