In the Linux kernel, the following vulnerability has been resolved:
netfilter: x_tables: avoid leaking percpu counter pointers
The native and compat get-entries paths copy the fixed rule entry header
from the kernelized rule blob to userspace before overwriting the entry's
counter fields with a sanitized counter snapshot.
On SMP kernels, entry->counters.pcnt contains the percpu allocation
address used by x_tables rule counters. A caller can provide a userspace
buffer that faults during the initial fixed-header copy after pcnt has
been copied but before the later sanitized counter copy runs. The syscall
then returns -EFAULT while leaving the raw percpu pointer in userspace.
Copy only the fixed entry prefix before counters from the kernelized rule
blob, then copy the sanitized counter snapshot into the counter field.
Apply this ordering to the IPv4, IPv6, and ARP native and compat
get-entries implementations so a fault cannot expose the internal percpu
counter pointer.
References
Configurations
Configuration 1 (hide)
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History
02 Jul 2026, 20:52
| Type | Values Removed | Values Added |
|---|---|---|
| CPE | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.1:rc5:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.1:rc3:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.1:rc7:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.1:rc4:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.1:rc6:*:*:*:*:*:* |
|
| CWE | NVD-CWE-noinfo | |
| First Time |
Linux linux Kernel
Linux |
|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 5.5 |
| References | () https://git.kernel.org/stable/c/08a3e218064db11f154ad9ad5541751ea7f34ebe - Patch | |
| References | () https://git.kernel.org/stable/c/0b35dc8527ccc16b7dc34e8a3164313e68cd4e45 - Patch | |
| References | () https://git.kernel.org/stable/c/8d67e42ad3b1a95a152541015a07110e06992d6c - Patch | |
| References | () https://git.kernel.org/stable/c/a0d16941adf3a501956d74aefd8d6e217906e79c - Patch | |
| References | () https://git.kernel.org/stable/c/b28e2fcad3db7e8687b15bc20bced26b5b7c920e - Patch | |
| References | () https://git.kernel.org/stable/c/b74ba3343eb44b2cbf7e9665918c287df1d52ebb - Patch | |
| References | () https://git.kernel.org/stable/c/f7f2fbb0e893a0238dc464f8d8c0f5609bec584f - Patch | |
| References | () https://git.kernel.org/stable/c/fb0521aff1e10e300d89725cc439d3ea74c828c5 - Patch |
25 Jun 2026, 09:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-06-25 09:16
Updated : 2026-07-02 20:52
NVD link : CVE-2026-53219
Mitre link : CVE-2026-53219
CVE.ORG link : CVE-2026-53219
JSON object : View
Products Affected
linux
- linux_kernel
CWE