memory leak in __vsock

ID	Workflow	Result	Correct	Bug	Created	Started	Finished	Revision	Error
cd978d21	patching		❓	memory leak in __vsock_create (2)	2026/05/04 18:11	2026/05/04 18:11	2026/05/04 21:19	fb79c764
a8b9ef84	assessment-security	DenialOfService: ✅ Exploitable: ❌ FilesystemTrigger: ❌ NetworkTrigger: ❌ PeripheralTrigger: ❌ RemoteTrigger: ❌ Unprivileged: ✅ UserNamespace: ✅ VMGuestTrigger: ✅ VMHostTrigger: ✅	✅	memory leak in __vsock_create (2)	2026/05/04 11:37	2026/05/04 11:37	2026/05/04 11:39	a0d91488

patching

❓

2026/05/04 18:11

2026/05/04 21:19

assessment-security

DenialOfService: ✅ Exploitable: ❌ FilesystemTrigger: ❌ NetworkTrigger: ❌ PeripheralTrigger: ❌ RemoteTrigger: ❌ Unprivileged: ✅ UserNamespace: ✅ VMGuestTrigger: ✅ VMHostTrigger: ✅

✅

memory leak in __vsock_create (2)

2026/05/04 11:37

2026/05/04 11:39

a0d91488

Title	Replies (including bot)	Last reply
[PATCH] vsock: use sock_error() to consume sk_err after connect timeout	10 (10)	2026/07/24 07:34
[syzbot] [virt?] [net?] memory leak in __vsock_create (2)	1 (6)	2026/07/19 08:58
[syzbot] Monthly virt report (Jun 2026)	4 (5)	2026/07/06 11:54
[PATCH] vsock/virtio: fix memory leak in virtio_transport_recv_listen	3 (3)	2026/06/06 19:19
[syzbot] Monthly net report (May 2026)	0 (1)	2026/05/23 12:32
[PATCH] vsock/virtio: fix memory leak in virtio_transport_recv_listen()	4 (4)	2026/04/28 08:57

Title

Replies (including bot)

Last reply

[PATCH] vsock: use sock_error() to consume sk_err after connect timeout

10 (10)

2026/07/24 07:34

[syzbot] [virt?] [net?] memory leak in __vsock_create (2)

1 (6)

2026/07/19 08:58

[syzbot] Monthly virt report (Jun 2026)

4 (5)

2026/07/06 11:54

[PATCH] vsock/virtio: fix memory leak in virtio_transport_recv_listen

3 (3)

2026/06/06 19:19

[syzbot] Monthly net report (May 2026)

0 (1)

2026/05/23 12:32

[PATCH] vsock/virtio: fix memory leak in virtio_transport_recv_listen()

4 (4)

2026/04/28 08:57

Kernel	Title	Rank 🛈	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
upstream	memory leak in __vsock_create net virt io-uring	3	C			1	1570d	1566d	22/29	fixed on 2023/02/24 13:50

Rank 🛈

upstream

memory leak in __vsock_create net virt io-uring

1570d

1566d

22/29

fixed on 2023/02/24 13:50


Created	Duration	User	Patch	Repo	Result
2026/07/21 08:18	38m	retest repro		upstream	report log
2026/07/19 08:58	28m	phind.uet@gmail.com	patch	linux-next	OK log
2026/07/19 04:53	29m	phind.uet@gmail.com		linux-next	report log
2026/07/08 03:14	33m	retest repro		upstream	report log
2026/06/02 10:08	27m	retest repro		upstream	report log
2026/05/11 00:21	49m	retest repro		upstream	report log
2026/04/27 16:19	35m	sgarzare@redhat.com		https://github.com/stefano-garzarella/linux.git fix-syzbot-memleak-vsock-create	report log
2026/04/24 05:18	29m	kartikey406@gmail.com	patch	upstream	OK log
2026/03/24 04:08	12m	retest repro		upstream	report log
2026/03/24 03:59	12m	retest repro		upstream	report log
2026/03/01 16:13	29m	retest repro		upstream	report log
2026/03/01 16:08	16m	retest repro		upstream	report log

2026/07/22 14:05:07 executed programs: 5 BUG: memory leak unreferenced object 0xffff888123d8ad00 (size 1272): comm "kworker/0:1", pid 10, jiffies 4294944132 hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 28 00 0b 40 00 00 00 00 00 00 00 00 00 00 00 00 (..@............ backtrace (crc a4238736): kmemleak_alloc_recursive include/linux/kmemleak.h:44 [inline] slab_post_alloc_hook mm/slub.c:4625 [inline] slab_alloc_node mm/slub.c:4945 [inline] kmem_cache_alloc_noprof+0x34f/0x440 mm/slub.c:4959 sk_prot_alloc+0x3e/0x1b0 net/core/sock.c:2246 sk_alloc+0x36/0x3d0 net/core/sock.c:2308 __vsock_create.constprop.0+0x38/0x2f0 net/vmw_vsock/af_vsock.c:919 virtio_transport_recv_listen net/vmw_vsock/virtio_transport_common.c:1558 [inline] virtio_transport_recv_pkt+0x904/0xf80 net/vmw_vsock/virtio_transport_common.c:1684 vsock_loopback_work+0x104/0x140 net/vmw_vsock/vsock_loopback.c:142 process_one_work+0x277/0x5a0 kernel/workqueue.c:3322 process_scheduled_works kernel/workqueue.c:3405 [inline] worker_thread+0x255/0x4a0 kernel/workqueue.c:3486 kthread+0x14e/0x1a0 kernel/kthread.c:436 ret_from_fork+0x219/0x490 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 BUG: memory leak unreferenced object 0xffff88811038b060 (size 32): comm "kworker/0:1", pid 10, jiffies 4294944132 hex dump (first 32 bytes): f8 52 0a 00 81 88 ff ff 00 00 00 00 00 00 00 00 .R.............. 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace (crc 42a7bc0e): kmemleak_alloc_recursive include/linux/kmemleak.h:44 [inline] slab_post_alloc_hook mm/slub.c:4625 [inline] slab_alloc_node mm/slub.c:4945 [inline] __do_kmalloc_node mm/slub.c:5361 [inline] __kmalloc_noprof+0x3bf/0x550 mm/slub.c:5387 _kmalloc_noprof include/linux/slab.h:973 [inline] _kzalloc_noprof include/linux/slab.h:1290 [inline] lsm_blob_alloc+0x4d/0x80 security/security.c:218 lsm_sock_alloc security/security.c:4478 [inline] security_sk_alloc+0x2d/0x290 security/security.c:4494 sk_prot_alloc+0x8f/0x1b0 net/core/sock.c:2255 sk_alloc+0x36/0x3d0 net/core/sock.c:2308 __vsock_create.constprop.0+0x38/0x2f0 net/vmw_vsock/af_vsock.c:919 virtio_transport_recv_listen net/vmw_vsock/virtio_transport_common.c:1558 [inline] virtio_transport_recv_pkt+0x904/0xf80 net/vmw_vsock/virtio_transport_common.c:1684 vsock_loopback_work+0x104/0x140 net/vmw_vsock/vsock_loopback.c:142 process_one_work+0x277/0x5a0 kernel/workqueue.c:3322 process_scheduled_works kernel/workqueue.c:3405 [inline] worker_thread+0x255/0x4a0 kernel/workqueue.c:3486 kthread+0x14e/0x1a0 kernel/kthread.c:436 ret_from_fork+0x219/0x490 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 BUG: memory leak unreferenced object 0xffff88810d171c00 (size 96): comm "kworker/0:1", pid 10, jiffies 4294944132 hex dump (first 32 bytes): 00 ad d8 23 81 88 ff ff 00 00 00 00 00 00 00 00 ...#............ 00 00 00 00 00 00 00 00 00 00 04 00 00 00 00 00 ................ backtrace (crc fe10da64): kmemleak_alloc_recursive include/linux/kmemleak.h:44 [inline] slab_post_alloc_hook mm/slub.c:4625 [inline] slab_alloc_node mm/slub.c:4945 [inline] __kmalloc_cache_noprof+0x356/0x440 mm/slub.c:5511 _kmalloc_noprof include/linux/slab.h:969 [inline] _kzalloc_noprof include/linux/slab.h:1290 [inline] virtio_transport_do_socket_init+0x2b/0xf0 net/vmw_vsock/virtio_transport_common.c:910 vsock_assign_transport+0x3a3/0x460 net/vmw_vsock/af_vsock.c:670 virtio_transport_recv_listen net/vmw_vsock/virtio_transport_common.c:1574 [inline] virtio_transport_recv_pkt+0x95c/0xf80 net/vmw_vsock/virtio_transport_common.c:1684 vsock_loopback_work+0x104/0x140 net/vmw_vsock/vsock_loopback.c:142 process_one_work+0x277/0x5a0 kernel/workqueue.c:3322 process_scheduled_works kernel/workqueue.c:3405 [inline] worker_thread+0x255/0x4a0 kernel/workqueue.c:3486 kthread+0x14e/0x1a0 kernel/kthread.c:436 ret_from_fork+0x219/0x490 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 BUG: memory leak unreferenced object 0xffff8881019800c0 (size 184): comm "syz-executor", pid 5807, jiffies 4294944133 hex dump (first 32 bytes): 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace (crc ee8942a7): kmemleak_alloc_recursive include/linux/kmemleak.h:44 [inline] slab_post_alloc_hook mm/slub.c:4625 [inline] slab_alloc_node mm/slub.c:4945 [inline] kmem_cache_alloc_noprof+0x34f/0x440 mm/slub.c:4959 prepare_creds+0x22/0x570 kernel/cred.c:185 copy_creds+0x44/0x290 kernel/cred.c:286 copy_process+0x988/0x2d70 kernel/fork.c:2153 kernel_clone+0x101/0x710 kernel/fork.c:2748 __do_sys_clone+0x7f/0xb0 kernel/fork.c:2889 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf8/0x610 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f BUG: memory leak unreferenced object 0xffff888123d7e800 (size 1272): comm "kworker/1:2", pid 808, jiffies 4294944133 hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 28 00 0b 40 00 00 00 00 00 00 00 00 00 00 00 00 (..@............ backtrace (crc a41654b5): kmemleak_alloc_recursive include/linux/kmemleak.h:44 [inline] slab_post_alloc_hook mm/slub.c:4625 [inline] slab_alloc_node mm/slub.c:4945 [inline] kmem_cache_alloc_noprof+0x34f/0x440 mm/slub.c:4959 sk_prot_alloc+0x3e/0x1b0 net/core/sock.c:2246 sk_alloc+0x36/0x3d0 net/core/sock.c:2308 __vsock_create.constprop.0+0x38/0x2f0 net/vmw_vsock/af_vsock.c:919 virtio_transport_recv_listen net/vmw_vsock/virtio_transport_common.c:1558 [inline] virtio_transport_recv_pkt+0x904/0xf80 net/vmw_vsock/virtio_transport_common.c:1684 vsock_loopback_work+0x104/0x140 net/vmw_vsock/vsock_loopback.c:142 process_one_work+0x277/0x5a0 kernel/workqueue.c:3322 process_scheduled_works kernel/workqueue.c:3405 [inline] worker_thread+0x255/0x4a0 kernel/workqueue.c:3486 kthread+0x14e/0x1a0 kernel/kthread.c:436 ret_from_fork+0x219/0x490 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 BUG: memory leak unreferenced object 0xffff88810e1318a0 (size 32): comm "kworker/1:2", pid 808, jiffies 4294944133 hex dump (first 32 bytes): f8 52 0a 00 81 88 ff ff 00 00 00 00 00 00 00 00 .R.............. 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace (crc 42a7bc0e): kmemleak_alloc_recursive include/linux/kmemleak.h:44 [inline] slab_post_alloc_hook mm/slub.c:4625 [inline] slab_alloc_node mm/slub.c:4945 [inline] __do_kmalloc_node mm/slub.c:5361 [inline] __kmalloc_noprof+0x3bf/0x550 mm/slub.c:5387 _kmalloc_noprof include/linux/slab.h:973 [inline] _kzalloc_noprof include/linux/slab.h:1290 [inline] lsm_blob_alloc+0x4d/0x80 security/security.c:218 lsm_sock_alloc security/security.c:4478 [inline] security_sk_alloc+0x2d/0x290 security/security.c:4494 sk_prot_alloc+0x8f/0x1b0 net/core/sock.c:2255 sk_alloc+0x36/0x3d0 net/core/sock.c:2308 __vsock_create.constprop.0+0x38/0x2f0 net/vmw_vsock/af_vsock.c:919 virtio_transport_recv_listen net/vmw_vsock/virtio_transport_common.c:1558 [inline] virtio_transport_recv_pkt+0x904/0xf80 net/vmw_vsock/virtio_transport_common.c:1684 vsock_loopback_work+0x104/0x140 net/vmw_vsock/vsock_loopback.c:142 process_one_work+0x277/0x5a0 kernel/workqueue.c:3322 process_scheduled_works kernel/workqueue.c:3405 [inline] worker_thread+0x255/0x4a0 kernel/workqueue.c:3486 kthread+0x14e/0x1a0 kernel/kthread.c:436 ret_from_fork+0x219/0x490 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 connection error: failed to recv *flatrpc.ExecutorMessageRawT: EOF

Crashes (4):
Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	Assets (help?)	Manager	Title
2026/07/22 14:05	upstream	248951ddc14d	b561ce9c	.config	console log	report	syz / log	C	[disk image] [vmlinux] [kernel image]	ci-upstream-gce-leak	memory leak in __vsock_create
2026/06/23 20:31	upstream	502d801f0ab0	4b1d8f01	.config	console log	report	syz / log	C	[disk image] [vmlinux] [kernel image]	ci-upstream-gce-leak	memory leak in __vsock_create
2026/03/09 23:37	upstream	1f318b96cc84	176bead5	.config	console log	report	syz / log	C	[disk image] [vmlinux] [kernel image]	ci-upstream-gce-leak	memory leak in __vsock_create
2026/02/15 16:00	upstream	ca4ee40bf13d	1e62d198	.config	console log	report	syz / log		[disk image] [vmlinux] [kernel image]	ci-upstream-gce-leak	memory leak in __vsock_create

Crashes (4):

Assets (help?)