Title | Replies (including bot) | Last reply |
---|---|---|
[PATCH net] af_unix: fix use-after-free in unix_stream_read_actor() | 3 (3) | 2023/11/14 10:10 |
syzbot |
sign-in | mailing list | source | docs |
Title | Replies (including bot) | Last reply |
---|---|---|
[PATCH net] af_unix: fix use-after-free in unix_stream_read_actor() | 3 (3) | 2023/11/14 10:10 |
Kernel | Title | Repro | Cause bisect | Fix bisect | Count | Last | Reported | Patched | Status |
---|---|---|---|---|---|---|---|---|---|
upstream | KASAN: slab-use-after-free Read in unix_stream_read_actor (2) net | C | inconclusive | 4 | 99d | 94d | 28/28 | fixed on 2024/10/22 11:56 | |
android-6-1 | KASAN: use-after-free Read in unix_stream_read_actor missing-backport origin:upstream | C | done | done | 2 | 319d | 393d | 0/2 | auto-obsoleted due to no activity on 2024/05/03 09:45 |
linux-5.15 | KASAN: use-after-free Read in unix_stream_read_actor origin:lts-only | C | done | 1 | 391d | 393d | 3/3 | fixed on 2023/12/13 18:20 | |
linux-6.1 | KASAN: use-after-free Read in unix_stream_read_actor origin:lts-only | C | done | 1 | 389d | 393d | 3/3 | fixed on 2023/12/18 16:47 | |
android-5-15 | KASAN: use-after-free Read in unix_stream_read_actor origin:upstream | C | 1 | 393d | 393d | 0/2 | auto-obsoleted due to no activity on 2024/02/19 03:43 |
Created | Duration | User | Patch | Repo | Result |
---|---|---|---|---|---|
2023/11/13 09:28 | 1h22m | edumazet@google.com | patch | https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master | OK log |
================================================================== BUG: KASAN: slab-use-after-free in unix_stream_read_actor+0xa7/0xc0 net/unix/af_unix.c:2866 Read of size 4 at addr ffff88807f041904 by task syz-executor222/5856 CPU: 0 PID: 5856 Comm: syz-executor222 Not tainted 6.6.0-syzkaller-16176-g1b907d050735 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023 Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:364 [inline] print_report+0xc4/0x620 mm/kasan/report.c:475 kasan_report+0xda/0x110 mm/kasan/report.c:588 unix_stream_read_actor+0xa7/0xc0 net/unix/af_unix.c:2866 unix_stream_recv_urg net/unix/af_unix.c:2587 [inline] unix_stream_read_generic+0x19a5/0x2480 net/unix/af_unix.c:2666 unix_stream_recvmsg+0x189/0x1b0 net/unix/af_unix.c:2903 sock_recvmsg_nosec net/socket.c:1044 [inline] sock_recvmsg+0xe2/0x170 net/socket.c:1066 ____sys_recvmsg+0x21f/0x5c0 net/socket.c:2803 ___sys_recvmsg+0x115/0x1a0 net/socket.c:2845 __sys_recvmsg+0x114/0x1e0 net/socket.c:2875 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3f/0x110 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x63/0x6b RIP: 0033:0x7fc5ada23559 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 51 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fc5ad9a2228 EFLAGS: 00000246 ORIG_RAX: 000000000000002f RAX: ffffffffffffffda RBX: 0000000000000035 RCX: 00007fc5ada23559 RDX: 0000000040010083 RSI: 0000000020000140 RDI: 0000000000000004 RBP: 00007fc5adaad348 R08: 00007fc5ad9a26c0 R09: 00007fc5ad9a26c0 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fc5adaad340 R13: 00007fc5adaad34c R14: 00007ffe7c8d85a0 R15: 00007ffe7c8d8688 </TASK> Allocated by task 5854: kasan_save_stack+0x33/0x50 mm/kasan/common.c:45 kasan_set_track+0x25/0x30 mm/kasan/common.c:52 __kasan_slab_alloc+0x81/0x90 mm/kasan/common.c:328 kasan_slab_alloc include/linux/kasan.h:188 [inline] slab_post_alloc_hook mm/slab.h:763 [inline] slab_alloc_node mm/slub.c:3478 [inline] kmem_cache_alloc_node+0x180/0x3c0 mm/slub.c:3523 __alloc_skb+0x287/0x330 net/core/skbuff.c:641 alloc_skb include/linux/skbuff.h:1286 [inline] alloc_skb_with_frags+0xe4/0x710 net/core/skbuff.c:6331 sock_alloc_send_pskb+0x7e4/0x970 net/core/sock.c:2780 sock_alloc_send_skb include/net/sock.h:1884 [inline] queue_oob net/unix/af_unix.c:2147 [inline] unix_stream_sendmsg+0xb5f/0x10a0 net/unix/af_unix.c:2301 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0xd5/0x180 net/socket.c:745 ____sys_sendmsg+0x6ac/0x940 net/socket.c:2584 ___sys_sendmsg+0x135/0x1d0 net/socket.c:2638 __sys_sendmsg+0x117/0x1e0 net/socket.c:2667 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3f/0x110 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x63/0x6b Freed by task 5854: kasan_save_stack+0x33/0x50 mm/kasan/common.c:45 kasan_set_track+0x25/0x30 mm/kasan/common.c:52 kasan_save_free_info+0x2b/0x40 mm/kasan/generic.c:522 ____kasan_slab_free mm/kasan/common.c:236 [inline] ____kasan_slab_free+0x15b/0x1b0 mm/kasan/common.c:200 kasan_slab_free include/linux/kasan.h:164 [inline] slab_free_hook mm/slub.c:1800 [inline] slab_free_freelist_hook+0x114/0x1e0 mm/slub.c:1826 slab_free mm/slub.c:3809 [inline] kmem_cache_free+0xf8/0x340 mm/slub.c:3831 kfree_skbmem+0xef/0x1b0 net/core/skbuff.c:1015 __kfree_skb net/core/skbuff.c:1073 [inline] consume_skb net/core/skbuff.c:1288 [inline] consume_skb+0xdf/0x170 net/core/skbuff.c:1282 queue_oob net/unix/af_unix.c:2178 [inline] unix_stream_sendmsg+0xd49/0x10a0 net/unix/af_unix.c:2301 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0xd5/0x180 net/socket.c:745 ____sys_sendmsg+0x6ac/0x940 net/socket.c:2584 ___sys_sendmsg+0x135/0x1d0 net/socket.c:2638 __sys_sendmsg+0x117/0x1e0 net/socket.c:2667 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3f/0x110 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x63/0x6b The buggy address belongs to the object at ffff88807f0418c0 which belongs to the cache skbuff_head_cache of size 240 The buggy address is located 68 bytes inside of freed 240-byte region [ffff88807f0418c0, ffff88807f0419b0) The buggy address belongs to the physical page: page:ffffea0001fc1040 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x7f041 flags: 0xfff00000000800(slab|node=0|zone=1|lastcpupid=0x7ff) page_type: 0xffffffff() raw: 00fff00000000800 ffff88814225a640 dead000000000122 0000000000000000 raw: 0000000000000000 00000000000c000c 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x12cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY), pid 5849, tgid 5838 (syz-executor222), ts 94694135656, free_ts 94528374814 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x2cf/0x340 mm/page_alloc.c:1537 prep_new_page mm/page_alloc.c:1544 [inline] get_page_from_freelist+0xa25/0x36c0 mm/page_alloc.c:3312 __alloc_pages+0x1d0/0x4a0 mm/page_alloc.c:4568 alloc_pages_mpol+0x258/0x5f0 mm/mempolicy.c:2133 alloc_slab_page mm/slub.c:1870 [inline] allocate_slab+0x251/0x380 mm/slub.c:2017 new_slab mm/slub.c:2070 [inline] ___slab_alloc+0x8c7/0x1580 mm/slub.c:3223 __slab_alloc.constprop.0+0x56/0xa0 mm/slub.c:3322 __slab_alloc_node mm/slub.c:3375 [inline] slab_alloc_node mm/slub.c:3468 [inline] kmem_cache_alloc_node+0x132/0x3c0 mm/slub.c:3523 __alloc_skb+0x287/0x330 net/core/skbuff.c:641 alloc_skb include/linux/skbuff.h:1286 [inline] alloc_skb_with_frags+0xe4/0x710 net/core/skbuff.c:6331 sock_alloc_send_pskb+0x7e4/0x970 net/core/sock.c:2780 sock_alloc_send_skb include/net/sock.h:1884 [inline] queue_oob net/unix/af_unix.c:2147 [inline] unix_stream_sendmsg+0xb5f/0x10a0 net/unix/af_unix.c:2301 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0xd5/0x180 net/socket.c:745 ____sys_sendmsg+0x6ac/0x940 net/socket.c:2584 ___sys_sendmsg+0x135/0x1d0 net/socket.c:2638 __sys_sendmsg+0x117/0x1e0 net/socket.c:2667 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1137 [inline] free_unref_page_prepare+0x4f8/0xa90 mm/page_alloc.c:2347 free_unref_page+0x33/0x3b0 mm/page_alloc.c:2487 vfree mm/vmalloc.c:2842 [inline] vfree+0x3fb/0xe40 mm/vmalloc.c:2807 delayed_vfree_work+0x56/0x70 mm/vmalloc.c:2763 process_one_work+0x884/0x15c0 kernel/workqueue.c:2630 process_scheduled_works kernel/workqueue.c:2703 [inline] worker_thread+0x8b9/0x1290 kernel/workqueue.c:2784 kthread+0x33c/0x440 kernel/kthread.c:388 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242 Memory state around the buggy address: ffff88807f041800: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc ffff88807f041880: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb >ffff88807f041900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff88807f041980: fb fb fb fb fb fb fc fc fc fc fc fc fc fc fc fc ffff88807f041a00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2023/11/12 20:59 | upstream | 1b907d050735 | 6d6dbf8a | .config | strace log | report | syz | C | [disk image] [vmlinux] [kernel image] | ci-upstream-kasan-gce | KASAN: slab-use-after-free Read in unix_stream_read_actor | |
2023/11/11 11:30 | net | 719639853d88 | 6d6dbf8a | .config | strace log | report | syz | C | [disk image] [vmlinux] [kernel image] | ci-upstream-net-this-kasan-gce | KASAN: slab-use-after-free Read in unix_stream_read_actor | |
2023/11/11 06:24 | bpf | e2e57d637aa5 | 6d6dbf8a | .config | strace log | report | syz | C | [disk image] [vmlinux] [kernel image] | ci-upstream-bpf-kasan-gce | KASAN: slab-use-after-free Read in unix_stream_read_actor | |
2023/11/11 05:10 | net-next | 89cdf9d55601 | 6d6dbf8a | .config | strace log | report | syz | C | [disk image] [vmlinux] [kernel image] | ci-upstream-net-kasan-gce | KASAN: slab-use-after-free Read in unix_stream_read_actor | |
2023/11/11 05:05 | bpf-next | b8e3a87a627b | 6d6dbf8a | .config | strace log | report | syz | C | [disk image] [vmlinux] [kernel image] | ci-upstream-bpf-next-kasan-gce | KASAN: slab-use-after-free Read in unix_stream_read_actor | |
2023/11/27 10:36 | git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci | 8de1e7afcc1c | 5b429f39 | .config | console log | report | syz | [disk image] [vmlinux] [kernel image] | ci-upstream-gce-arm64 | KASAN: slab-use-after-free Read in unix_stream_read_actor |