CVE-2025-38464 (GCVE-0-2025-38464)

Vulnerability from cvelistv5 – Published: 2025-07-25 15:27 – Updated: 2026-06-11 18:44
VLAI
Title
tipc: Fix use-after-free in tipc_conn_close().
Summary
In the Linux kernel, the following vulnerability has been resolved: tipc: Fix use-after-free in tipc_conn_close(). syzbot reported a null-ptr-deref in tipc_conn_close() during netns dismantle. [0] tipc_topsrv_stop() iterates tipc_net(net)->topsrv->conn_idr and calls tipc_conn_close() for each tipc_conn. The problem is that tipc_conn_close() is called after releasing the IDR lock. At the same time, there might be tipc_conn_recv_work() running and it could call tipc_conn_close() for the same tipc_conn and release its last ->kref. Once we release the IDR lock in tipc_topsrv_stop(), there is no guarantee that the tipc_conn is alive. Let's hold the ref before releasing the lock and put the ref after tipc_conn_close() in tipc_topsrv_stop(). [0]: BUG: KASAN: use-after-free in tipc_conn_close+0x122/0x140 net/tipc/topsrv.c:165 Read of size 8 at addr ffff888099305a08 by task kworker/u4:3/435 CPU: 0 PID: 435 Comm: kworker/u4:3 Not tainted 4.19.204-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: netns cleanup_net Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef lib/dump_stack.c:118 print_address_description.cold+0x54/0x219 mm/kasan/report.c:256 kasan_report_error.cold+0x8a/0x1b9 mm/kasan/report.c:354 kasan_report mm/kasan/report.c:412 [inline] __asan_report_load8_noabort+0x88/0x90 mm/kasan/report.c:433 tipc_conn_close+0x122/0x140 net/tipc/topsrv.c:165 tipc_topsrv_stop net/tipc/topsrv.c:701 [inline] tipc_topsrv_exit_net+0x27b/0x5c0 net/tipc/topsrv.c:722 ops_exit_list+0xa5/0x150 net/core/net_namespace.c:153 cleanup_net+0x3b4/0x8b0 net/core/net_namespace.c:553 process_one_work+0x864/0x1570 kernel/workqueue.c:2153 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 Allocated by task 23: kmem_cache_alloc_trace+0x12f/0x380 mm/slab.c:3625 kmalloc include/linux/slab.h:515 [inline] kzalloc include/linux/slab.h:709 [inline] tipc_conn_alloc+0x43/0x4f0 net/tipc/topsrv.c:192 tipc_topsrv_accept+0x1b5/0x280 net/tipc/topsrv.c:470 process_one_work+0x864/0x1570 kernel/workqueue.c:2153 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 Freed by task 23: __cache_free mm/slab.c:3503 [inline] kfree+0xcc/0x210 mm/slab.c:3822 tipc_conn_kref_release net/tipc/topsrv.c:150 [inline] kref_put include/linux/kref.h:70 [inline] conn_put+0x2cd/0x3a0 net/tipc/topsrv.c:155 process_one_work+0x864/0x1570 kernel/workqueue.c:2153 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 The buggy address belongs to the object at ffff888099305a00 which belongs to the cache kmalloc-512 of size 512 The buggy address is located 8 bytes inside of 512-byte region [ffff888099305a00, ffff888099305c00) The buggy address belongs to the page: page:ffffea000264c140 count:1 mapcount:0 mapping:ffff88813bff0940 index:0x0 flags: 0xfff00000000100(slab) raw: 00fff00000000100 ffffea00028b6b88 ffffea0002cd2b08 ffff88813bff0940 raw: 0000000000000000 ffff888099305000 0000000100000006 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff888099305900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff888099305980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff888099305a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff888099305a80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff888099305b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: c5fa7b3cf3cb22e4ac60485fc2dc187fe012910f , < 03dcdd2558e1e55bf843822fe4363dcb48743f2b (git)
Affected: c5fa7b3cf3cb22e4ac60485fc2dc187fe012910f , < 15a6f4971e2f157d57e09ea748d1fbc714277aa4 (git)
Affected: c5fa7b3cf3cb22e4ac60485fc2dc187fe012910f , < dab8ded2e5ff41012a6ff400b44dbe76ccf3592a (git)
Affected: c5fa7b3cf3cb22e4ac60485fc2dc187fe012910f , < 1dbf7cd2454a28b1da700085b99346b5445aeabb (git)
Affected: c5fa7b3cf3cb22e4ac60485fc2dc187fe012910f , < be4b8392da7978294f2f368799d29dd509fb6c4d (git)
Affected: c5fa7b3cf3cb22e4ac60485fc2dc187fe012910f , < 50aa2d121bc2cfe2d825f8a331ea75dfaaab6a50 (git)
Affected: c5fa7b3cf3cb22e4ac60485fc2dc187fe012910f , < 3b89e17b2fd64012682bed158d9eb3d2e96dec42 (git)
Affected: c5fa7b3cf3cb22e4ac60485fc2dc187fe012910f , < 667eeab4999e981c96b447a4df5f20bdf5c26f13 (git)
Create a notification for this product.
Linux Linux Affected: 3.11
Unaffected: 0 , < 3.11 (semver)
Unaffected: 5.4.296 , ≤ 5.4.* (semver)
Unaffected: 5.10.240 , ≤ 5.10.* (semver)
Unaffected: 5.15.189 , ≤ 5.15.* (semver)
Unaffected: 6.1.146 , ≤ 6.1.* (semver)
Unaffected: 6.6.99 , ≤ 6.6.* (semver)
Unaffected: 6.12.39 , ≤ 6.12.* (semver)
Unaffected: 6.15.7 , ≤ 6.15.* (semver)
Unaffected: 6.16 , ≤ * (original_commit_for_fix)
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntipc: Fix use-after-free in tipc_conn_close().\n\nsyzbot reported a null-ptr-deref in tipc_conn_close() during netns\ndismantle. [0]\n\ntipc_topsrv_stop() iterates tipc_net(net)-\u003etopsrv-\u003econn_idr and calls\ntipc_conn_close() for each tipc_conn.\n\nThe problem is that tipc_conn_close() is called after releasing the\nIDR lock.\n\nAt the same time, there might be tipc_conn_recv_work() running and it\ncould call tipc_conn_close() for the same tipc_conn and release its\nlast -\u003ekref.\n\nOnce we release the IDR lock in tipc_topsrv_stop(), there is no\nguarantee that the tipc_conn is alive.\n\nLet\u0027s hold the ref before releasing the lock and put the ref after\ntipc_conn_close() in tipc_topsrv_stop().\n\n[0]:\nBUG: KASAN: use-after-free in tipc_conn_close+0x122/0x140 net/tipc/topsrv.c:165\nRead of size 8 at addr ffff888099305a08 by task kworker/u4:3/435\n\nCPU: 0 PID: 435 Comm: kworker/u4:3 Not tainted 4.19.204-syzkaller #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011\nWorkqueue: netns cleanup_net\nCall Trace:\n __dump_stack lib/dump_stack.c:77 [inline]\n dump_stack+0x1fc/0x2ef lib/dump_stack.c:118\n print_address_description.cold+0x54/0x219 mm/kasan/report.c:256\n kasan_report_error.cold+0x8a/0x1b9 mm/kasan/report.c:354\n kasan_report mm/kasan/report.c:412 [inline]\n __asan_report_load8_noabort+0x88/0x90 mm/kasan/report.c:433\n tipc_conn_close+0x122/0x140 net/tipc/topsrv.c:165\n tipc_topsrv_stop net/tipc/topsrv.c:701 [inline]\n tipc_topsrv_exit_net+0x27b/0x5c0 net/tipc/topsrv.c:722\n ops_exit_list+0xa5/0x150 net/core/net_namespace.c:153\n cleanup_net+0x3b4/0x8b0 net/core/net_namespace.c:553\n process_one_work+0x864/0x1570 kernel/workqueue.c:2153\n worker_thread+0x64c/0x1130 kernel/workqueue.c:2296\n kthread+0x33f/0x460 kernel/kthread.c:259\n ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415\n\nAllocated by task 23:\n kmem_cache_alloc_trace+0x12f/0x380 mm/slab.c:3625\n kmalloc include/linux/slab.h:515 [inline]\n kzalloc include/linux/slab.h:709 [inline]\n tipc_conn_alloc+0x43/0x4f0 net/tipc/topsrv.c:192\n tipc_topsrv_accept+0x1b5/0x280 net/tipc/topsrv.c:470\n process_one_work+0x864/0x1570 kernel/workqueue.c:2153\n worker_thread+0x64c/0x1130 kernel/workqueue.c:2296\n kthread+0x33f/0x460 kernel/kthread.c:259\n ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415\n\nFreed by task 23:\n __cache_free mm/slab.c:3503 [inline]\n kfree+0xcc/0x210 mm/slab.c:3822\n tipc_conn_kref_release net/tipc/topsrv.c:150 [inline]\n kref_put include/linux/kref.h:70 [inline]\n conn_put+0x2cd/0x3a0 net/tipc/topsrv.c:155\n process_one_work+0x864/0x1570 kernel/workqueue.c:2153\n worker_thread+0x64c/0x1130 kernel/workqueue.c:2296\n kthread+0x33f/0x460 kernel/kthread.c:259\n ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415\n\nThe buggy address belongs to the object at ffff888099305a00\n which belongs to the cache kmalloc-512 of size 512\nThe buggy address is located 8 bytes inside of\n 512-byte region [ffff888099305a00, ffff888099305c00)\nThe buggy address belongs to the page:\npage:ffffea000264c140 count:1 mapcount:0 mapping:ffff88813bff0940 index:0x0\nflags: 0xfff00000000100(slab)\nraw: 00fff00000000100 ffffea00028b6b88 ffffea0002cd2b08 ffff88813bff0940\nraw: 0000000000000000 ffff888099305000 0000000100000006 0000000000000000\npage dumped because: kasan: bad access detected\n\nMemory state around the buggy address:\n ffff888099305900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb\n ffff888099305980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc\n\u003effff888099305a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb\n                      ^\n ffff888099305a80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb\n ffff888099305b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb"
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        "dateUpdated": "2026-05-11T21:28:31.028Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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        {
          "url": "https://git.kernel.org/stable/c/03dcdd2558e1e55bf843822fe4363dcb48743f2b"
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        {
          "url": "https://git.kernel.org/stable/c/15a6f4971e2f157d57e09ea748d1fbc714277aa4"
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        {
          "url": "https://git.kernel.org/stable/c/dab8ded2e5ff41012a6ff400b44dbe76ccf3592a"
        },
        {
          "url": "https://git.kernel.org/stable/c/1dbf7cd2454a28b1da700085b99346b5445aeabb"
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        {
          "url": "https://git.kernel.org/stable/c/be4b8392da7978294f2f368799d29dd509fb6c4d"
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        {
          "url": "https://git.kernel.org/stable/c/50aa2d121bc2cfe2d825f8a331ea75dfaaab6a50"
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        {
          "url": "https://git.kernel.org/stable/c/3b89e17b2fd64012682bed158d9eb3d2e96dec42"
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        {
          "url": "https://git.kernel.org/stable/c/667eeab4999e981c96b447a4df5f20bdf5c26f13"
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      "title": "tipc: Fix use-after-free in tipc_conn_close().",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2025-38464",
    "datePublished": "2025-07-25T15:27:46.708Z",
    "dateReserved": "2025-04-16T04:51:24.020Z",
    "dateUpdated": "2026-06-11T18:44:21.666Z",
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    "nvd": "{\"cve\":{\"id\":\"CVE-2025-38464\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-07-25T16:15:32.383\",\"lastModified\":\"2025-12-22T19:35:28.490\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\ntipc: Fix use-after-free in tipc_conn_close().\\n\\nsyzbot reported a null-ptr-deref in tipc_conn_close() during netns\\ndismantle. [0]\\n\\ntipc_topsrv_stop() iterates tipc_net(net)-\u003etopsrv-\u003econn_idr and calls\\ntipc_conn_close() for each tipc_conn.\\n\\nThe problem is that tipc_conn_close() is called after releasing the\\nIDR lock.\\n\\nAt the same time, there might be tipc_conn_recv_work() running and it\\ncould call tipc_conn_close() for the same tipc_conn and release its\\nlast -\u003ekref.\\n\\nOnce we release the IDR lock in tipc_topsrv_stop(), there is no\\nguarantee that the tipc_conn is alive.\\n\\nLet\u0027s hold the ref before releasing the lock and put the ref after\\ntipc_conn_close() in tipc_topsrv_stop().\\n\\n[0]:\\nBUG: KASAN: use-after-free in tipc_conn_close+0x122/0x140 net/tipc/topsrv.c:165\\nRead of size 8 at addr ffff888099305a08 by task kworker/u4:3/435\\n\\nCPU: 0 PID: 435 Comm: kworker/u4:3 Not tainted 4.19.204-syzkaller #0\\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011\\nWorkqueue: netns cleanup_net\\nCall Trace:\\n __dump_stack lib/dump_stack.c:77 [inline]\\n dump_stack+0x1fc/0x2ef lib/dump_stack.c:118\\n print_address_description.cold+0x54/0x219 mm/kasan/report.c:256\\n kasan_report_error.cold+0x8a/0x1b9 mm/kasan/report.c:354\\n kasan_report mm/kasan/report.c:412 [inline]\\n __asan_report_load8_noabort+0x88/0x90 mm/kasan/report.c:433\\n tipc_conn_close+0x122/0x140 net/tipc/topsrv.c:165\\n tipc_topsrv_stop net/tipc/topsrv.c:701 [inline]\\n tipc_topsrv_exit_net+0x27b/0x5c0 net/tipc/topsrv.c:722\\n ops_exit_list+0xa5/0x150 net/core/net_namespace.c:153\\n cleanup_net+0x3b4/0x8b0 net/core/net_namespace.c:553\\n process_one_work+0x864/0x1570 kernel/workqueue.c:2153\\n worker_thread+0x64c/0x1130 kernel/workqueue.c:2296\\n kthread+0x33f/0x460 kernel/kthread.c:259\\n ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415\\n\\nAllocated by task 23:\\n kmem_cache_alloc_trace+0x12f/0x380 mm/slab.c:3625\\n kmalloc include/linux/slab.h:515 [inline]\\n kzalloc include/linux/slab.h:709 [inline]\\n tipc_conn_alloc+0x43/0x4f0 net/tipc/topsrv.c:192\\n tipc_topsrv_accept+0x1b5/0x280 net/tipc/topsrv.c:470\\n process_one_work+0x864/0x1570 kernel/workqueue.c:2153\\n worker_thread+0x64c/0x1130 kernel/workqueue.c:2296\\n kthread+0x33f/0x460 kernel/kthread.c:259\\n ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415\\n\\nFreed by task 23:\\n __cache_free mm/slab.c:3503 [inline]\\n kfree+0xcc/0x210 mm/slab.c:3822\\n tipc_conn_kref_release net/tipc/topsrv.c:150 [inline]\\n kref_put include/linux/kref.h:70 [inline]\\n conn_put+0x2cd/0x3a0 net/tipc/topsrv.c:155\\n process_one_work+0x864/0x1570 kernel/workqueue.c:2153\\n worker_thread+0x64c/0x1130 kernel/workqueue.c:2296\\n kthread+0x33f/0x460 kernel/kthread.c:259\\n ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415\\n\\nThe buggy address belongs to the object at ffff888099305a00\\n which belongs to the cache kmalloc-512 of size 512\\nThe buggy address is located 8 bytes inside of\\n 512-byte region [ffff888099305a00, ffff888099305c00)\\nThe buggy address belongs to the page:\\npage:ffffea000264c140 count:1 mapcount:0 mapping:ffff88813bff0940 index:0x0\\nflags: 0xfff00000000100(slab)\\nraw: 00fff00000000100 ffffea00028b6b88 ffffea0002cd2b08 ffff88813bff0940\\nraw: 0000000000000000 ffff888099305000 0000000100000006 0000000000000000\\npage dumped because: kasan: bad access detected\\n\\nMemory state around the buggy address:\\n ffff888099305900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb\\n ffff888099305980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc\\n\u003effff888099305a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb\\n                      ^\\n ffff888099305a80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb\\n ffff888099305b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: tipc: Se ha corregido el error use-after-free en tipc_conn_close(). syzbot inform\u00f3 de un error \\\"null-ptr-deref\\\" en tipc_conn_close() durante el desmantelamiento de netns. [0] tipc_topsrv_stop() itera tipc_net(net)-\u0026gt;topsrv-\u0026gt;conn_idr e invoca tipc_conn_close() para cada tipc_conn. El problema es que tipc_conn_close() se invoca tras liberar el bloqueo IDR. Simult\u00e1neamente, tipc_conn_recv_work() podr\u00eda estar ejecut\u00e1ndose y podr\u00eda invocar tipc_conn_close() para el mismo tipc_conn y liberar su \u00faltimo -\u0026gt;kref. Una vez que liberamos el bloqueo IDR en tipc_topsrv_stop(), no hay garant\u00eda de que tipc_conn siga activo. Mantengamos la referencia antes de liberar el bloqueo y coloquemos la referencia despu\u00e9s de tipc_conn_close() en tipc_topsrv_stop(). [0]: BUG: KASAN: use-after-free in tipc_conn_close+0x122/0x140 net/tipc/topsrv.c:165 Read of size 8 at addr ffff888099305a08 by task kworker/u4:3/435 CPU: 0 PID: 435 Comm: kworker/u4:3 Not tainted 4.19.204-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: netns cleanup_net Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef lib/dump_stack.c:118 print_address_description.cold+0x54/0x219 mm/kasan/report.c:256 kasan_report_error.cold+0x8a/0x1b9 mm/kasan/report.c:354 kasan_report mm/kasan/report.c:412 [inline] __asan_report_load8_noabort+0x88/0x90 mm/kasan/report.c:433 tipc_conn_close+0x122/0x140 net/tipc/topsrv.c:165 tipc_topsrv_stop net/tipc/topsrv.c:701 [inline] tipc_topsrv_exit_net+0x27b/0x5c0 net/tipc/topsrv.c:722 ops_exit_list+0xa5/0x150 net/core/net_namespace.c:153 cleanup_net+0x3b4/0x8b0 net/core/net_namespace.c:553 process_one_work+0x864/0x1570 kernel/workqueue.c:2153 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 Allocated by task 23: kmem_cache_alloc_trace+0x12f/0x380 mm/slab.c:3625 kmalloc include/linux/slab.h:515 [inline] kzalloc include/linux/slab.h:709 [inline] tipc_conn_alloc+0x43/0x4f0 net/tipc/topsrv.c:192 tipc_topsrv_accept+0x1b5/0x280 net/tipc/topsrv.c:470 process_one_work+0x864/0x1570 kernel/workqueue.c:2153 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 Freed by task 23: __cache_free mm/slab.c:3503 [inline] kfree+0xcc/0x210 mm/slab.c:3822 tipc_conn_kref_release net/tipc/topsrv.c:150 [inline] kref_put include/linux/kref.h:70 [inline] conn_put+0x2cd/0x3a0 net/tipc/topsrv.c:155 process_one_work+0x864/0x1570 kernel/workqueue.c:2153 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 The buggy address belongs to the object at ffff888099305a00 which belongs to the cache kmalloc-512 of size 512 The buggy address is located 8 bytes inside of 512-byte region [ffff888099305a00, ffff888099305c00) The buggy address belongs to the page: page:ffffea000264c140 count:1 mapcount:0 mapping:ffff88813bff0940 index:0x0 flags: 0xfff00000000100(slab) raw: 00fff00000000100 ffffea00028b6b88 ffffea0002cd2b08 ffff88813bff0940 raw: 0000000000000000 ffff888099305000 0000000100000006 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff888099305900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff888099305980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc \u0026gt;ffff888099305a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff888099305a80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff888099305b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb 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Party Advisory\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]}]}}",
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html\"}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html\"}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2025-11-03T17:38:25.539Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2025-38464\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-06-10T20:42:18.283515Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-06-11T17:39:16.061Z\"}}], \"cna\": {\"title\": \"tipc: Fix use-after-free in tipc_conn_close().\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"c5fa7b3cf3cb22e4ac60485fc2dc187fe012910f\", \"lessThan\": \"03dcdd2558e1e55bf843822fe4363dcb48743f2b\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"c5fa7b3cf3cb22e4ac60485fc2dc187fe012910f\", \"lessThan\": \"15a6f4971e2f157d57e09ea748d1fbc714277aa4\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"c5fa7b3cf3cb22e4ac60485fc2dc187fe012910f\", \"lessThan\": \"dab8ded2e5ff41012a6ff400b44dbe76ccf3592a\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"c5fa7b3cf3cb22e4ac60485fc2dc187fe012910f\", \"lessThan\": \"1dbf7cd2454a28b1da700085b99346b5445aeabb\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"c5fa7b3cf3cb22e4ac60485fc2dc187fe012910f\", \"lessThan\": \"be4b8392da7978294f2f368799d29dd509fb6c4d\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"c5fa7b3cf3cb22e4ac60485fc2dc187fe012910f\", \"lessThan\": \"50aa2d121bc2cfe2d825f8a331ea75dfaaab6a50\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"c5fa7b3cf3cb22e4ac60485fc2dc187fe012910f\", \"lessThan\": \"3b89e17b2fd64012682bed158d9eb3d2e96dec42\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"c5fa7b3cf3cb22e4ac60485fc2dc187fe012910f\", \"lessThan\": \"667eeab4999e981c96b447a4df5f20bdf5c26f13\", \"versionType\": \"git\"}], \"programFiles\": [\"net/tipc/topsrv.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"3.11\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"3.11\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.4.296\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.4.*\"}, {\"status\": \"unaffected\", \"version\": \"5.10.240\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.189\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.146\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.99\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.12.39\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.12.*\"}, {\"status\": \"unaffected\", \"version\": \"6.15.7\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.16\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"net/tipc/topsrv.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/03dcdd2558e1e55bf843822fe4363dcb48743f2b\"}, {\"url\": \"https://git.kernel.org/stable/c/15a6f4971e2f157d57e09ea748d1fbc714277aa4\"}, {\"url\": \"https://git.kernel.org/stable/c/dab8ded2e5ff41012a6ff400b44dbe76ccf3592a\"}, {\"url\": \"https://git.kernel.org/stable/c/1dbf7cd2454a28b1da700085b99346b5445aeabb\"}, {\"url\": \"https://git.kernel.org/stable/c/be4b8392da7978294f2f368799d29dd509fb6c4d\"}, {\"url\": \"https://git.kernel.org/stable/c/50aa2d121bc2cfe2d825f8a331ea75dfaaab6a50\"}, {\"url\": \"https://git.kernel.org/stable/c/3b89e17b2fd64012682bed158d9eb3d2e96dec42\"}, {\"url\": \"https://git.kernel.org/stable/c/667eeab4999e981c96b447a4df5f20bdf5c26f13\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\ntipc: Fix use-after-free in tipc_conn_close().\\n\\nsyzbot reported a null-ptr-deref in tipc_conn_close() during netns\\ndismantle. [0]\\n\\ntipc_topsrv_stop() iterates tipc_net(net)-\u003etopsrv-\u003econn_idr and calls\\ntipc_conn_close() for each tipc_conn.\\n\\nThe problem is that tipc_conn_close() is called after releasing the\\nIDR lock.\\n\\nAt the same time, there might be tipc_conn_recv_work() running and it\\ncould call tipc_conn_close() for the same tipc_conn and release its\\nlast -\u003ekref.\\n\\nOnce we release the IDR lock in tipc_topsrv_stop(), there is no\\nguarantee that the tipc_conn is alive.\\n\\nLet\u0027s hold the ref before releasing the lock and put the ref after\\ntipc_conn_close() in tipc_topsrv_stop().\\n\\n[0]:\\nBUG: KASAN: use-after-free in tipc_conn_close+0x122/0x140 net/tipc/topsrv.c:165\\nRead of size 8 at addr ffff888099305a08 by task kworker/u4:3/435\\n\\nCPU: 0 PID: 435 Comm: kworker/u4:3 Not tainted 4.19.204-syzkaller #0\\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011\\nWorkqueue: netns cleanup_net\\nCall Trace:\\n __dump_stack lib/dump_stack.c:77 [inline]\\n dump_stack+0x1fc/0x2ef lib/dump_stack.c:118\\n print_address_description.cold+0x54/0x219 mm/kasan/report.c:256\\n kasan_report_error.cold+0x8a/0x1b9 mm/kasan/report.c:354\\n kasan_report mm/kasan/report.c:412 [inline]\\n __asan_report_load8_noabort+0x88/0x90 mm/kasan/report.c:433\\n tipc_conn_close+0x122/0x140 net/tipc/topsrv.c:165\\n tipc_topsrv_stop net/tipc/topsrv.c:701 [inline]\\n tipc_topsrv_exit_net+0x27b/0x5c0 net/tipc/topsrv.c:722\\n ops_exit_list+0xa5/0x150 net/core/net_namespace.c:153\\n cleanup_net+0x3b4/0x8b0 net/core/net_namespace.c:553\\n process_one_work+0x864/0x1570 kernel/workqueue.c:2153\\n worker_thread+0x64c/0x1130 kernel/workqueue.c:2296\\n kthread+0x33f/0x460 kernel/kthread.c:259\\n ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415\\n\\nAllocated by task 23:\\n kmem_cache_alloc_trace+0x12f/0x380 mm/slab.c:3625\\n kmalloc include/linux/slab.h:515 [inline]\\n kzalloc include/linux/slab.h:709 [inline]\\n tipc_conn_alloc+0x43/0x4f0 net/tipc/topsrv.c:192\\n tipc_topsrv_accept+0x1b5/0x280 net/tipc/topsrv.c:470\\n process_one_work+0x864/0x1570 kernel/workqueue.c:2153\\n worker_thread+0x64c/0x1130 kernel/workqueue.c:2296\\n kthread+0x33f/0x460 kernel/kthread.c:259\\n ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415\\n\\nFreed by task 23:\\n __cache_free mm/slab.c:3503 [inline]\\n kfree+0xcc/0x210 mm/slab.c:3822\\n tipc_conn_kref_release net/tipc/topsrv.c:150 [inline]\\n kref_put include/linux/kref.h:70 [inline]\\n conn_put+0x2cd/0x3a0 net/tipc/topsrv.c:155\\n process_one_work+0x864/0x1570 kernel/workqueue.c:2153\\n worker_thread+0x64c/0x1130 kernel/workqueue.c:2296\\n kthread+0x33f/0x460 kernel/kthread.c:259\\n ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415\\n\\nThe buggy address belongs to the object at ffff888099305a00\\n which belongs to the cache kmalloc-512 of size 512\\nThe buggy address is located 8 bytes inside of\\n 512-byte region [ffff888099305a00, ffff888099305c00)\\nThe buggy address belongs to the page:\\npage:ffffea000264c140 count:1 mapcount:0 mapping:ffff88813bff0940 index:0x0\\nflags: 0xfff00000000100(slab)\\nraw: 00fff00000000100 ffffea00028b6b88 ffffea0002cd2b08 ffff88813bff0940\\nraw: 0000000000000000 ffff888099305000 0000000100000006 0000000000000000\\npage dumped because: kasan: bad access detected\\n\\nMemory state around the buggy address:\\n ffff888099305900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb\\n ffff888099305980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc\\n\u003effff888099305a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb\\n                      ^\\n ffff888099305a80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb\\n ffff888099305b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.296\", \"versionStartIncluding\": \"3.11\"}, {\"criteria\": 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\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.16\", \"versionStartIncluding\": \"3.11\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-05-11T21:28:31.028Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2025-38464\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-06-11T18:44:21.666Z\", \"dateReserved\": \"2025-04-16T04:51:24.020Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2025-07-25T15:27:46.708Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


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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.