CVE-2026-64538

A flaw was found in the Linux kernel's IPv6 networking component. A null pointer dereference vulnerability exists in the fib6nhmtuchange function. This can occur when the idev in6device pointer is cleared during network interface shutdown, but the fib6nhmtuchange function attempts to dereference ...

UBUNTU-CVE-2026-64538

ipv6: Fix null-ptr-deref in fib6nhmtuchange...

CVE-2026-64538

In the Linux kernel, the following vulnerability has been resolved: ipv6: Fix null-ptr-deref in fib6nhmtuchange. fib6nhmtuchange re-fetches idev via in6devgetarg-dev and dereferences idev-cnf.mtu6 without a NULL check. addrconfifdown clears dev-ip6ptr with RCUINITPOINTER after rt6disableip has...

CVE-2026-64538

CVE-2026-64538 concerns a Linux kernel vulnerability where fib6_nh_mtu_change() dereferences idev->cnf.mtu6 after re-fetching idev with __in6_dev_get(arg->dev) without a NULL check. This can occur because addrconf_ifdown() clears dev->ip6_ptr after tb6_lock is released, allowing an RA-dr...

EUVD-2026-49589

In the Linux kernel, the following vulnerability has been resolved: ipv6: Fix null-ptr-deref in fib6nhmtuchange. fib6nhmtuchange re-fetches idev via in6devgetarg-dev and dereferences idev-cnf.mtu6 without a NULL check. addrconfifdown clears dev-ip6ptr with RCUINITPOINTER after rt6disableip has...

CVE-2026-43234

CVE-2026-43234 concerns the Linux kernel team driver. The issue arises when unregistering a slave from a team interface while a NETDEV_CHANGEMTU event is pending, potentially causing a deadlock/resource exhaustion and system unresponsiveness as shown by reproduction steps involving creating a tea...

CVE-2026-43234 team: avoid NETDEV_CHANGEMTU event when unregistering slave

In the Linux kernel, the following vulnerability has been resolved: team: avoid NETDEVCHANGEMTU event when unregistering slave syzbot is reporting unregisternetdevice: waiting for netdevsim0 to become free. Usage count = 3 reftracker: netdev@ffff88807dcf8618 has 1/2 users at netdevtrackeralloc...

PT-2026-37574

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the team driver where a NETDEV CHANGEMTU event is triggered during the unregistration of a slave. This can lead to a situation where the system waits for a network...

Unity Linux 20.1060a Security Update: kernel (UTSA-2026-014336)

"The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-014336 advisory. In the Linux kernel, the following vulnerability has been resolved: can: etases58x: populate ndochangemtu to prevent buffer overflow Sending an PFPACKET allows to...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-011318)

"The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-011318 advisory. In the Linux kernel, the following vulnerability has been resolved: can: sun4ican: populate ndochangemtu to prevent buffer overflow Sending an PFPACKET allows to...

CVE-2026-23438

A flaw was found in the Linux kernel's mvpp2 driver. A local privileged user could cause a system crash, leading to a Denial of Service DoS, by triggering a null pointer dereference. This occurs when changing the Maximum Transmission Unit MTU on systems where the CM3 SRAM resource is not present,...

EUVD-2026-18679

In the Linux kernel, the following vulnerability has been resolved: net: mvpp2: guard flow control update with globaltxfc in buffer switching mvpp2bmswitchbuffers unconditionally calls mvpp2bmpoolupdateprivfc when switching between per-cpu and shared buffer pool modes. This function programs CM3...

CVE-2026-23438

In the Linux kernel, the following vulnerability has been resolved: net: mvpp2: guard flow control update with globaltxfc in buffer switching mvpp2bmswitchbuffers unconditionally calls mvpp2bmpoolupdateprivfc when switching between per-cpu and shared buffer pool modes. This function programs CM3...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: bnxten: Fix receive ring space parameters when XDP is active The MTU setting at the time an XDP multi-buffer is attached determines whether the aggregation ring will be used and the rxskbfunc handler. This is done in...

SUSE CVE-2025-39988

In the Linux kernel, the following vulnerability has been resolved: can: etases58x: populate ndochangemtu to prevent buffer overflow Sending an PFPACKET allows to bypass the CAN framework logic and to directly reach the xmit function of a CAN driver. The only check which is performed by the...

PT-2025-42261

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A flaw exists in the sun4i can driver within the Linux kernel where a missing check in the ndo change mtu function allows an attacker to configure an invalid MTU. This can be exploited b...

Linux kernel 安全漏洞

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. A security vulnerability exists in the Linux kernel that stems from the mcbausb driver's failure to implement the ndochangemtu function, which could lead to a buffer overflow...

Linux kernel 安全漏洞

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. A security vulnerability exists in the Linux kernel that stems from the etases58x driver's failure to implement the ndochangemtu function, which could lead to a buffer overflow...

DEBIAN-CVE-2022-49654

In the Linux kernel, the following vulnerability has been resolved: net: dsa: qca8k: reset cpu port on MTU change It was discovered that the Documentation lacks of a fundamental detail on how to correctly change the MAXFRAMESIZE of the switch. In fact if the MAXFRAMESIZE is changed while the cpu...

UBUNTU-CVE-2022-49654

In the Linux kernel, the following vulnerability has been resolved: net: dsa: qca8k: reset cpu port on MTU change It was discovered that the Documentation lacks of a fundamental detail on how to correctly change the MAXFRAMESIZE of the switch. In fact if the MAXFRAMESIZE is changed while the cpu...