kernel: Linux kernel SLIP: Out-of-bounds write due to race condition during MTU change

A flaw was found in the Linux kernel's SLIP Serial Line Internet Protocol network component. A race condition exists during an MTU Maximum Transmission Unit change when the system reallocates receive buffers. This can allow a remote attacker to trigger an out-of-bounds write or write to a freed...

Astra Linux – vulnerability in linux-6.1, linux-6.12, linux-6.18

In the Linux kernel, the following vulnerability has been resolved: ipv4: reject undersized MTUs in ipdofragment ipdofragment subtracts the IPv4 header length from the effective MTU and passes the resulting payload MTU to ipfragnext. If the effective MTU is smaller than hlen + 8, ipfragnext round...

CVE-2026-114408

In Eclipse ThreadX NetX Duo versions 6.4.5.202504 through 6.5.2.202603a, built with IPv6 path MTU discovery, the ICMPv6 Packet Too Big handler uses the destination-table entry it adds without checking that the add succeeded. A sender on the network can fill the destination table with Packet Too B...

CVE-2026-114408 NULL pointer dereference in ICMPv6 Packet Too Big processing when the destination table is full

In Eclipse ThreadX NetX Duo versions 6.4.5.202504 through 6.5.2.202603a, built with IPv6 path MTU discovery, the ICMPv6 Packet Too Big handler uses the destination-table entry it adds without checking that the add succeeded. A sender on the network can fill the destination table with Packet Too B...

CVE-2026-114408 NULL pointer dereference in ICMPv6 Packet Too Big processing when the destination table is full

In Eclipse ThreadX NetX Duo versions 6.4.5.202504 through 6.5.2.202603a, built with IPv6 path MTU discovery, the ICMPv6 Packet Too Big handler uses the destination-table entry it adds without checking that the add succeeded. A sender on the network can fill the destination table with Packet Too B...

EUVD-2026-115231

In Eclipse ThreadX NetX Duo versions 6.4.5.202504 through 6.5.2.202603a, built with IPv6 path MTU discovery, the ICMPv6 Packet Too Big handler uses the destination-table entry it adds without checking that the add succeeded. A sender on the network can fill the destination table with Packet Too B...

CVE-2026-114408

Eclipse ThreadX NetX Duo versions 6.4.5.202504 through 6.5.2.202603a built with IPv6 path MTU discovery are vulnerable to a NULL pointer dereference . The vulnerability exists because the ICMPv6 Packet Too Big handler fails to verify if an entry was successfully added to the destination table. A ...

CVE-2026-114408: Eclipse Foundation Eclipse ThreadX: In Eclipse ThreadX NetX Duo versions 6.4.5.202504 through 6.5.2.202603a, built with IPv6 path MTU discovery, the ICMPv6…

In Eclipse ThreadX NetX Duo versions 6.4.5.202504 through 6.5.2.202603a, built with IPv6 path MTU discovery, the ICMPv6 Packet Too Big handler uses the destination-table entry it adds without checking that the add succeeded. A sender on the network can fill the destination table with Packet Too B...

PT-2026-135487

In Eclipse ThreadX NetX Duo versions 6.4.5.202504 through 6.5.2.202603a, built with IPv6 path MTU discovery, the ICMPv6 Packet Too Big handler uses the destination-table entry it adds without checking that the add succeeded. A sender on the network can fill the destination table with Packet Too B...

Fedora 45 : nebula (2026-1aa327b369)

The remote Fedora 45 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-1aa327b369 advisory. Windows tracks NLMTU per address family and Nebula only ever set it for AFINET, so the IPv6 MTU on every Windows adapter sat at the adapter default ...

DEBIAN-CVE-2026-98906

In the Linux kernel, the following vulnerability has been resolved: net: lan966x: restore RX state on reload failure lan966xfdmareload backs up rx-pagepool and rx-fdma before reallocating the RX resources for the new MTU. If the allocation fails, the restore path puts these fields back before...

CVE-2026-98906

In the Linux kernel, the following vulnerability has been resolved: net: lan966x: restore RX state on reload failure lan966xfdmareload backs up rx-pagepool and rx-fdma before reallocating the RX resources for the new MTU. If the allocation fails, the restore path puts these fields back before...

Unity Linux 20.1020e / 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-142521)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-142521 advisory. In the Linux kernel, the following vulnerability has been resolved: tipc: fix u16 MTU truncation in media and bearer MTU validation Both TIPCNLMEDIASET and...

Fedora 44 : nebula (2026-3dbdc5d71d)

The remote Fedora 44 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-3dbdc5d71d advisory. Windows tracks NLMTU per address family and Nebula only ever set it for AFINET, so the IPv6 MTU on every Windows adapter sat at the adapter default ...

Astra Linux – vulnerability in linux-5.10, linux-6.1, linux, linux-5.15

In the Linux kernel, the following vulnerability has been resolved: icmp: fix NULL pointer dereference in icmptagvalidation icmptagvalidation unconditionally dereferences the result of rcudereferenceinetprotosproto without checking for NULL. The inetprotos array is sparse — only about 15 of 256...

EUVD-2026-103767

In the Linux kernel, the following vulnerability has been resolved: wifi: ath9khtc: bound TX aggregation to MAXTXBUFSIZE hifusbtx dequeues up to MAXTXAGGRNUM 20 frames into a single txbuf of MAXTXBUFSIZE 32768 bytes, limiting the batch by record count but never by cumulative byte length. With lar...

CVE-2026-98827: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: wifi: ath9khtc: bound TX aggregation to MAXTXBUFSIZE hifusbtx dequeues up to MAXTXAGGRNUM 20 frames into a single txbuf of MAXTXBUFSIZE 32768 bytes, limiting the batch by record count but never by cumulative byte length. With lar...

CVE-2026-80793

A flaw was found in the Linux kernel's IPv4 fragmentation handling. When processing IPv4 packets, if the Maximum Transmission Unit MTU is set to an unusually small value, the kernel's fragmentation logic can enter an infinite loop. This loop causes the system to continuously allocate and transmit...

Astra Linux – vulnerability in linux-5.10, linux-5.15, linux

In the Linux kernel, the following vulnerability has been resolved: tcp: Fix data-races around sysctltcpmtuprobing. While reading sysctltcpmtuprobing, it can be changed concurrently. Thus, we need to add READONCE to its readers...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: TCP: Fixed a data race around sysctltcpmtuprobefloor. When reading sysctltcpmtuprobefloor, it can be changed concurrently. Therefore, we need to add READONCE to its reader...