kernel: net/mlx5e: macsec: fix use-after-free of metadata_dst on RX SC delete

A flaw was found in the Linux kernel's MACsec Media Access Control Security component. A race condition during the deletion of an offloaded MACsec RX Security Channel SC allows the RX datapath to access and operate on memory that has already been freed. This use-after-free vulnerability can lead ...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: net: macsec: Fixed the offload support for the NETDEVUNREGISTER event. The current macsec netdev notify handler handles the NETDEVUNREGISTER event by releasing relevant software resources only. This can lead to resource leaks in...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: macsec: Fixed the UAF bug related to realdev. A new macsec device was created, but there was no reference to realdev. This does not ensure that realdev is freed after the macsec device is removed. This will trigger the UAF bug...

The vulnerability of the macsec_post_decrypt() function in the drivers/net/macsec.c module of the network device driver for the Linux operating system allows a attacker to compromise the integrity of protected information or cause service failures.

The vulnerability of the macsecpostdecrypt function in the drivers/net/macsec.c module of the network device driver for the Linux operating system is related to the bypassing of the authentication process. Exploiting this vulnerability allows a remote attacker to compromise the integrity of...

Unity Linux 20.1050a Security Update: kernel (UTSA-2026-053404)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-053404 advisory. In the Linux kernel, the following vulnerability has been resolved: macsec: fix UAF bug for realdev Create a new macsec device but not get reference to realdev. That...

SUSE CVE-2026-72072

In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: macsec: fix use-after-free of metadatadst on RX SC delete When an offloaded MACsec RX SC is deleted, macsecdelrxscctx freed the per-SC metadatadst with metadatadstfree, which kfrees the object unconditionally and ignor...

SUSE CVE-2026-72019

In the Linux kernel, the following vulnerability has been resolved: macsec: don't read an unset MAC header in macsecencrypt macsecencrypt reads the Ethernet header via ethhdrskb skb-head + skb-macheader to memmove the 12 source/destination MAC bytes forward and make room for the SecTAG. On the...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: macsec: fixed the use-of-memory issue related to metadatadst during RX SC deletion. When an offloaded MACsec RX SC is deleted, the function macsecdelrxscctx frees the per-SC metadatadst using metadatadstfree. This...

Linux Distros Unpatched Vulnerability : CVE-2026-72072

"The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - net/mlx5e: macsec: fix use-after-free of metadatadst on RX SC delete When an offloaded MACsec RX SC is deleted, macsecdelrxscctx freed the per-SC metadatadst...

ANT-2026-F8AZ7X04 · wireshark · global-buffer-overflow

global-buffer-overflow high Severity Claude critical · Security research firm high · Maintainer - Discovered by Claude Opus 4.6 REPORT Anthropic's analysis, sealed at approval. Disclosure to the maintainer was performed by Trail of Bits. ANT-2026-F8AZ7X04: global-buffer-overflow in wireshark In...

CVE-2026-72072

A flaw was found in the Linux kernel's MACsec Media Access Control Security component. A race condition during the deletion of an offloaded MACsec RX Security Channel SC allows the RX datapath to access and operate on memory that has already been freed. This use-after-free vulnerability can lead ...

CVE-2026-72019

A flaw was found in the macsec component of the Linux kernel. When processing packets on the AFPACKET SOCKRAW + PACKETQDISCBYPASS transmit path, the macsecencrypt function attempts to read an unset Media Access Control MAC header. This leads to a 12-byte heap over-read, where sensitive data from...

Unity Linux 20.1050e Security Update: kernel (UTSA-2026-099920)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-099920 advisory. In the Linux kernel, the following vulnerability has been resolved: macsec: fix replay protection at XPN lower-PN wrap In macsecpostdecrypt, when pn is U32MAX, pn + ...

CVE-2026-72072

In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: macsec: fix use-after-free of metadatadst on RX SC delete When an offloaded MACsec RX SC is deleted, macsecdelrxscctx freed the per-SC metadatadst with metadatadstfree, which kfrees the object unconditionally and ignor...

CVE-2026-72019

In the Linux kernel, the following vulnerability has been resolved: macsec: don't read an unset MAC header in macsecencrypt macsecencrypt reads the Ethernet header via ethhdrskb skb-head + skb-macheader to memmove the 12 source/destination MAC bytes forward and make room for the SecTAG. On the...

UBUNTU-CVE-2026-72072

In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: macsec: fix use-after-free of metadatadst on RX SC delete When an offloaded MACsec RX SC is deleted, macsecdelrxscctx freed the per-SC metadatadst with metadatadstfree, which kfrees the object unconditionally and ignor...

UBUNTU-CVE-2026-72019

In the Linux kernel, the following vulnerability has been resolved: macsec: don't read an unset MAC header in macsecencrypt macsecencrypt reads the Ethernet header via ethhdrskb skb-head + skb-macheader to memmove the 12 source/destination MAC bytes forward and make room for the SecTAG. On the...

CVE-2026-72072

In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: macsec: fix use-after-free of metadatadst on RX SC delete When an offloaded MACsec RX SC is deleted, macsecdelrxscctx freed the per-SC metadatadst with metadatadstfree, which kfrees the object unconditionally and ignor...

CVE-2026-72019

In the Linux kernel, the following vulnerability has been resolved: macsec: don't read an unset MAC header in macsecencrypt macsecencrypt reads the Ethernet header via ethhdrskb skb-head + skb-macheader to memmove the 12 source/destination MAC bytes forward and make room for the SecTAG. On the...

CVE-2026-72072 net/mlx5e: macsec: fix use-after-free of metadata_dst on RX SC delete

In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: macsec: fix use-after-free of metadatadst on RX SC delete When an offloaded MACsec RX SC is deleted, macsecdelrxscctx freed the per-SC metadatadst with metadatadstfree, which kfrees the object unconditionally and ignor...