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CVE-2026-64411— netfilter: ebtables: terminate table name before find_table_lock()

CVSS 7.1 · High EPSS 0.13% · P3

Affected Version Matrix 18

VendorProductVersion RangeStatus
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 4c046ca4e35a83ea32f6e748f54139f5fe2a1d01affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< ab63ccefb9c71627f957a0724c2b9ebc869c6f20affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< c6f539311e58e76aa96feef0f1572b13a564f8a2affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 2664f537ca5bcb2ef3fac2683dcca602e51fad24affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 7436da6c1bc44654b7f11a17e746f6999fd37250affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 6fe8d3cecd20bfaaaf440db3a06ba674d2f2e322affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< b6183b1b88a722b6d8ea0cecc99eba168a15e0beaffected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< a622d2e9608c9dff47fc2e5759ac7aa3a836b45daffected
… +10 more rows
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I. Basic Information for CVE-2026-64411

Vulnerability Information
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Vulnerability Title
netfilter: ebtables: terminate table name before find_table_lock()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: netfilter: ebtables: terminate table name before find_table_lock() update_counters() and compat_update_counters() forward a user-supplied 32-byte table name to find_table_lock() without NUL-terminating it. On a lookup miss, find_inlist_lock() calls try_then_request_module(..., "%s%s", "ebtable_", name), and vsnprintf() reads past the name field and the stack object until it hits a zero byte. BUG: KASAN: stack-out-of-bounds in string (lib/vsprintf.c:648 lib/vsprintf.c:730) Read of size 1 at addr ffff8880119dfb20 by task exploit/147 Call Trace: ... string (lib/vsprintf.c:648 lib/vsprintf.c:730) vsnprintf (lib/vsprintf.c:2945) __request_module (kernel/module/kmod.c:150) do_update_counters.isra.0 (net/bridge/netfilter/ebtables.c:371 net/bridge/netfilter/ebtables.c:380) update_counters (net/bridge/netfilter/ebtables.c:1440) do_ebt_set_ctl (net/bridge/netfilter/ebtables.c:2573) nf_setsockopt (net/netfilter/nf_sockopt.c:101) ip_setsockopt (net/ipv4/ip_sockglue.c:1424) raw_setsockopt (net/ipv4/raw.c:847) __sys_setsockopt (net/socket.c:2393) ... compat_do_replace() shares the same unterminated name via compat_copy_ebt_replace_from_user(); terminate it there too so all find_table_lock() callers behave alike. The other callers already terminate the name after the copy.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会开源的一款操作系统内核。 Linux kernel 2.6.12版本存在安全漏洞，该漏洞源于update_counters()和compat_update_counters()函数未对用户提供的32字节表名进行NUL终止处理，可能导致堆栈越界读取，进而导致信息泄露或系统崩溃。
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

VendorProductAffected VersionsCPESubscribe
LinuxLinux 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 ~ 4c046ca4e35a83ea32f6e748f54139f5fe2a1d01 -
LinuxLinux 2.6.12 -

II. Public POCs for CVE-2026-64411

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III. Intelligence Information for CVE-2026-64411

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Patches & Fixes for CVE-2026-64411 (8)

Same Patch Batch · Linux · 2026-07-25 · 274 CVEs total

CVE-2026-643559.8 CRITICALbpf: Reject fragmented frames in devmap
CVE-2026-644599.8 CRITICALtcp: restore RCU grace period in tcp_ao_destroy_sock
CVE-2026-643039.8 CRITICALspi: fsl-lpspi: terminate the RX channel on TX prepare failure path
CVE-2026-644399.8 CRITICALcrypto: krb5 - filter out async aead implementations at alloc
CVE-2026-644109.8 CRITICALnetfilter: flowtable: IPIP tunnel hardware offload is not yet support
CVE-2026-643999.8 CRITICALksmbd: add permission checks for FSCTL_DUPLICATE_EXTENTS_TO_FILE
CVE-2026-643979.8 CRITICALksmbd: serialize QUERY_DIRECTORY requests per file
CVE-2026-643919.8 CRITICALksmbd: use opener credentials for ADS I/O
CVE-2026-643879.8 CRITICALsmb: client: fix query directory replay double-free
CVE-2026-643869.8 CRITICALsmb: client: fix query_info() replay double-free
CVE-2026-643859.8 CRITICALsmb: client: fix double-free in SMB2_ioctl() replay
CVE-2026-643839.8 CRITICALsmb: client: fix double-free in SMB2_flush() replay
CVE-2026-643849.8 CRITICALsmb: client: fix change notify replay double-free
CVE-2026-642689.8 CRITICALRDMA/siw: bound Read Response placement to the RREAD length
CVE-2026-645239.8 CRITICALnet/handshake: Take a long-lived file reference at submit
CVE-2026-642699.1 CRITICALRDMA/rtrs-srv: Bound RDMA-Write length to chunk size in rdma_write_sg
CVE-2026-642579.1 CRITICALsmb: client: reject overlapping data areas in SMB2 responses
CVE-2026-643199.1 CRITICALnvmet-auth: validate reply message payload bounds against transfer length
CVE-2026-643209.1 CRITICALnvmet: fix pre-auth out-of-bounds heap read in Discovery Get Log Page
CVE-2026-643939.1 CRITICALksmbd: run set info with opener credentials

Showing top 20 of 274 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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