CVE-2021-46913— netfilter: nftables: clone set element expression template
Get alerts for future matching vulnerabilitiesLog in to subscribe
I. Basic Information for CVE-2021-46913
Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗ Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.
Vulnerability Title
netfilter: nftables: clone set element expression template
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: netfilter: nftables: clone set element expression template memcpy() breaks when using connlimit in set elements. Use nft_expr_clone() to initialize the connlimit expression list, otherwise connlimit garbage collector crashes when walking on the list head copy. [ 493.064656] Workqueue: events_power_efficient nft_rhash_gc [nf_tables] [ 493.064685] RIP: 0010:find_or_evict+0x5a/0x90 [nf_conncount] [ 493.064694] Code: 2b 43 40 83 f8 01 77 0d 48 c7 c0 f5 ff ff ff 44 39 63 3c 75 df 83 6d 18 01 48 8b 43 08 48 89 de 48 8b 13 48 8b 3d ee 2f 00 00 <48> 89 42 08 48 89 10 48 b8 00 01 00 00 00 00 ad de 48 89 03 48 83 [ 493.064699] RSP: 0018:ffffc90000417dc0 EFLAGS: 00010297 [ 493.064704] RAX: 0000000000000000 RBX: ffff888134f38410 RCX: 0000000000000000 [ 493.064708] RDX: 0000000000000000 RSI: ffff888134f38410 RDI: ffff888100060cc0 [ 493.064711] RBP: ffff88812ce594a8 R08: ffff888134f38438 R09: 00000000ebb9025c [ 493.064714] R10: ffffffff8219f838 R11: 0000000000000017 R12: 0000000000000001 [ 493.064718] R13: ffffffff82146740 R14: ffff888134f38410 R15: 0000000000000000 [ 493.064721] FS: 0000000000000000(0000) GS:ffff88840e440000(0000) knlGS:0000000000000000 [ 493.064725] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 493.064729] CR2: 0000000000000008 CR3: 00000001330aa002 CR4: 00000000001706e0 [ 493.064733] Call Trace: [ 493.064737] nf_conncount_gc_list+0x8f/0x150 [nf_conncount] [ 493.064746] nft_rhash_gc+0x106/0x390 [nf_tables]
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel 存在安全漏洞，该漏洞源于在集合元素中使用 connlimit 时 memcpy() 会中断。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2021-46913
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POCPremium
No public POC found.
Login to generate AI POCIII. Intelligence Information for CVE-2021-46913
请登录查看更多情报信息。
Same Patch Batch · Linux · 2024-02-27 · 67 CVEs total
| CVE-2021-46951 | tpm: efi: Use local variable for calculating final log size | |
| CVE-2021-46971 | perf/core: Fix unconditional security_locked_down() call | |
| CVE-2021-46970 | bus: mhi: pci_generic: Remove WQ_MEM_RECLAIM flag from state workqueue | |
| CVE-2021-46969 | bus: mhi: core: Fix invalid error returning in mhi_queue | |
| CVE-2021-46957 | riscv/kprobe: fix kernel panic when invoking sys_read traced by kprobe | |
| CVE-2021-46956 | virtiofs: fix memory leak in virtio_fs_probe() | |
| CVE-2021-46955 | openvswitch: fix stack OOB read while fragmenting IPv4 packets | |
| CVE-2021-46954 | net/sched: sch_frag: fix stack OOB read while fragmenting IPv4 packets | |
| CVE-2021-46953 | ACPI: GTDT: Don't corrupt interrupt mappings on watchdow probe failure | |
| CVE-2021-46952 | NFS: fs_context: validate UDP retrans to prevent shift out-of-bounds | |
| CVE-2021-46958 | btrfs: fix race between transaction aborts and fsyncs leading to use-after-free | |
| CVE-2021-46950 | md/raid1: properly indicate failure when ending a failed write request | |
| CVE-2021-46949 | sfc: farch: fix TX queue lookup in TX flush done handling | |
| CVE-2021-46948 | sfc: farch: fix TX queue lookup in TX event handling | |
| CVE-2021-46947 | sfc: adjust efx->xdp_tx_queue_count with the real number of initialized queues | |
| CVE-2021-46945 | ext4: always panic when errors=panic is specified | |
| CVE-2021-46944 | media: staging/intel-ipu3: Fix memory leak in imu_fmt | |
| CVE-2021-46943 | media: staging/intel-ipu3: Fix set_fmt error handling | |
| CVE-2021-46942 | io_uring: fix shared sqpoll cancellation hangs | |
| CVE-2021-46941 | usb: dwc3: core: Do core softreset when switch mode |
Showing top 20 of 67 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-43500
rxrpc: Also unshare DATA/RESPONSE packets when paged frags a - CVE-2026-43475
scsi: storvsc: Fix scheduling while atomic on PREEMPT_RT - CVE-2026-43474
fs: init flags_valid before calling vfs_fileattr_get - CVE-2026-43473
scsi: mpi3mr: Add NULL checks when resetting request and rep - CVE-2026-43472
unshare: fix unshare_fs() handling
Same vendor: Linux
- CVE-2026-43500
rxrpc: Also unshare DATA/RESPONSE packets when paged frags a - CVE-2026-43475
scsi: storvsc: Fix scheduling while atomic on PREEMPT_RT - CVE-2026-43474
fs: init flags_valid before calling vfs_fileattr_get - CVE-2026-43473
scsi: mpi3mr: Add NULL checks when resetting request and rep - CVE-2026-43472
unshare: fix unshare_fs() handling
V. Comments for CVE-2021-46913
No comments yet