CVE-2026-52927

A flaw was found in the Linux kernel's netfilter ebtables component. The compatmtwfromuser function, responsible for converting ebtables extensions, does not properly validate user-supplied sizes for match or target extensions. An attacker providing a size smaller than expected by an extension ca...

CVE-2026-53001

CVE-2026-53001 in the Linux kernel concerns the netfilter xtables extensions. The fix partially reverts a previous change to restrict several matches (xt_mac, xt_owner, xt_physdev) to the inet family (IPv4/IPv6), with xt_realm limited to IPv4. The intent is to apply these restrictions and avoid u...

CVE-2026-53001

In the Linux kernel, the following vulnerability has been resolved: netfilter: xtables: restrict several matches to inet family This is a partial revert of: commit ab4f21e6fb1c "netfilter: xtables: use NFPROTOUNSPEC in more extensions" to allow ipv4 and ipv6 only. - xtmac - xtowner - xtphysdev...

CVE-2026-53001 netfilter: xtables: restrict several matches to inet family

In the Linux kernel, the following vulnerability has been resolved: netfilter: xtables: restrict several matches to inet family This is a partial revert of: commit ab4f21e6fb1c "netfilter: xtables: use NFPROTOUNSPEC in more extensions" to allow ipv4 and ipv6 only. - xtmac - xtowner - xtphysdev...

CVE-2026-52927

In the Linux kernel, the following vulnerability has been resolved: netfilter: ebtables: fix OOB read in compatmtwfromuser Luxiao Xu says: The function compatmtwfromuser converts ebtables extensions from 32-bit user structures to kernel native structures. However, it lacks proper validation of th...

UBUNTU-CVE-2026-52927

In the Linux kernel, the following vulnerability has been resolved: netfilter: ebtables: fix OOB read in compatmtwfromuser Luxiao Xu says: The function compatmtwfromuser converts ebtables extensions from 32-bit user structures to kernel native structures. However, it lacks proper validation of th...

CVE-2026-52927 netfilter: ebtables: fix OOB read in compat_mtw_from_user

In the Linux kernel, the following vulnerability has been resolved: netfilter: ebtables: fix OOB read in compatmtwfromuser Luxiao Xu says: The function compatmtwfromuser converts ebtables extensions from 32-bit user structures to kernel native structures. However, it lacks proper validation of th...

CVE-2026-52927 netfilter: ebtables: fix OOB read in compat_mtw_from_user

In the Linux kernel, the following vulnerability has been resolved: netfilter: ebtables: fix OOB read in compatmtwfromuser Luxiao Xu says: The function compatmtwfromuser converts ebtables extensions from 32-bit user structures to kernel native structures. However, it lacks proper validation of th...

CVE-2026-52927

Summary (CVE-2026-52927) Linux kernel: netfilter/ebtables: fix OOB read in compat_mtw_from_user. The issue arises from insufficient validation of user-supplied match_size/target_size when converting 32-bit user structures to kernel-native structures in compat_from_user(). If an extension provides...

EUVD-2026-38730

In the Linux kernel, the following vulnerability has been resolved: netfilter: ebtables: fix OOB read in compatmtwfromuser Luxiao Xu says: The function compatmtwfromuser converts ebtables extensions from 32-bit user structures to kernel native structures. However, it lacks proper validation of th...

CVE-2026-52927

In the Linux kernel, the following vulnerability has been resolved: netfilter: ebtables: fix OOB read in compatmtwfromuser Luxiao Xu says: The function compatmtwfromuser converts ebtables extensions from 32-bit user structures to kernel native structures. However, it lacks proper validation of th...

CVE-2026-52927

In the Linux kernel, the following vulnerability has been resolved: netfilter: ebtables: fix OOB read in compatmtwfromuser Luxiao Xu says: The function compatmtwfromuser converts ebtables extensions from 32-bit user structures to kernel native structures. However, it lacks proper validation of th...

PT-2026-51895

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the netfilter xtables component where certain matches were not properly restricted to the inet family. This affects the xt mac, xt owner, and xt physdev extensions,...

Linux Distros Unpatched Vulnerability : CVE-2026-52927

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - netfilter: ebtables: fix OOB read in compatmtwfromuser Luxiao Xu says: The function compatmtwfromuser converts ebtables extensions from 32-bit user structures t...

PT-2026-51720

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An out-of-bounds read exists in the compat mtw from user function within the netfilter ebtables component. The issue occurs because the function fails to properly validate the...

Astra Linux – Vulnerability found in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: netfilter: ebtables: fixed the issue of using a blob after it was freed. We are not allowed to return an error at this point. Looking at the code, it seems that ret is always 0 at this point, but that’s not the case. c t =...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerability has been resolved: netfilter: ebtables: fix memory leak when blob is malformed The bug fix was incomplete; it “replaced” a crash with a memory leak. The old code contained an assignment to ret embedded within a conditional statement; this has been...

Unity Linux 20.1070a Security Update: kernel (UTSA-2026-013554)

"The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-013554 advisory. In the Linux kernel, the following vulnerability has been resolved: netfilter: ebtables: fix table blob use-after-free We are not allowed to return an error at this...

Unity Linux 20.1070a Security Update: kernel (UTSA-2026-013526)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-013526 advisory. In the Linux kernel, the following vulnerability has been resolved: net/smc: Fix possible leaked pernet namespace in smcinit In smcinit,...

Unity Linux 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-010821)

"The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-010821 advisory. In the Linux kernel, the following vulnerability has been resolved: netfilter: ebtables: fix table blob use-after-free We are not allowed to return an error at this...