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 ...

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: ipv6: ensure sane device mtu in tunnels Another syzbot report 1 with no reproducer hints at a bug in ip6gre tunnel dev:ip6gretap0 Since ipv6 mcast code makes sure to read dev-mtu once and applies a sanity check on it see commit...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: ipv4: Reject undersized MTUs in ipdofragment The ipdofragment function 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,...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, Linux, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: batman-adv: Avoid infinite loops when trying to resize the local TT. If the MTU of one of the attached interfaces becomes too small to transmit the local translation table, then it must be resized to fit within all fragments when...

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...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: net: Handling of integer overflows in kmallocreserve The committed change was as follows: c ptr = kmallocsize; if ptr size = ksizeptr; size = kmallocsizeroundupsize; ptr = kmallocsize; This caused various crashes, as reported ...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: bpf: Check skb-transportheader is set in bpfskbcheckmtu. The bpfskbcheckmtu helper needs to use skb-transportheader when the BPFMTUCHKSEGS flag is used: bpfskbcheckmtuskb, ifindex, &mtulen, 0, BPFMTUCHKSEGS. The transportheader i...

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

In the Linux kernel, the following vulnerability has been resolved: macvlan: enforce a consistent minimal mtu macvlan should enforce a minimal mtu of 68, even at link creation. This patch avoids the current behavior which could lead to crashes in the IPv6 stack if the link is brought up $ ip link...

CVE-2026-98393 net: ipv4: Fix UDP length overflow with PMTU discover and big MTU

In the Linux kernel, the following vulnerability has been resolved: net: ipv4: Fix UDP length overflow with PMTU discover and big MTU This commit bounds cork-base.fragsize to IPMAXMTU to avoid a possible overflow of UDP length that triggers a WARN in udpsetlenshort when setsockopt IPMTUDISCOVER i...

CVE-2026-98393

In the Linux kernel, the following vulnerability has been resolved: net: ipv4: Fix UDP length overflow with PMTU discover and big MTU This commit bounds cork-base.fragsize to IPMAXMTU to avoid a possible overflow of UDP length that triggers a WARN in udpsetlenshort when setsockopt IPMTUDISCOVER i...

PT-2026-114372

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the IPv4 implementation where a UDP length overflow can occur when Path MTU PMTU discovery is used with an unusually large Maximum Transmission Unit MTU. When the...

CVE-2026-98272

A flaw was found in the Linux kernel's Marvell mvpp2 network driver. This vulnerability can lead to a Denial of Service DoS due to an out-of-bounds memory access. A local user with network configuration privileges can trigger this issue by altering the Maximum Transmission Unit MTU, which causes...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, and Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: The sun4iCan driver does not populate the ndochangemtu function, allowing for a buffer overflow. Sending a PFPACKET message allows bypassing the CAN driver’s logic and directly reaching the xmit function of the CAN driver. The on...

Astra Linux – Vulnerability found in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: tipc: Do not update the MTU if msgmax is too small during MTU negotiation. During link MTU negotiation, a malicious peer may send an “Activate msg” with a very small MTU, e.g., 4, as tested by Shuang. Without checking for the...