K000163837: Multiple Linux kernel vulnerabilities

Security Advisory Description CVE-2026-46129 In the Linux kernel, the following vulnerability has been resolved: btrfs: fix double free in createspaceinfo error path When kobjectinitandadd fails, the call chain is: createspaceinfo - btrfssysfsaddspaceinfotype - kobjectinitandadd - failure -...

kernel: ipv4: validate checksum_start before completing checksum

A flaw was found in the Linux kernel. A local attacker or untrusted guest virtual machine can exploit this vulnerability by transmitting network packets containing malformed checksum metadata into the IPv4 networking subsystem. This failure to validate checksum metadata can corrupt memory during...

kernel: ipv4: validate checksum_start before completing checksum

A flaw was found in the Linux kernel. A local attacker or untrusted guest virtual machine can exploit this vulnerability by transmitting network packets containing malformed checksum metadata into the IPv4 networking subsystem. This failure to validate checksum metadata can corrupt memory during...

CVE-2026-98700

A flaw was found in the Linux kernel's mac80211 wireless subsystem. The transmission function for encapsulated Ethernet frames fails to set the operating frequency band from the channel context on non-Multi-Link Device MLD interfaces. A local user generating network traffic on an affected interfa...

CVE-2026-98697

A flaw was found in the Linux kernel's USB serial subsystem. A race condition during USB serial driver deregistration can result in a kernel memory leak. A local user with permissions to modify driver attributes can trigger this issue by writing to the dynamic identifier interface while the drive...

CVE-2026-98699

A flaw was found in the Linux kernel's mac80211 wireless subsystem. A race condition occurs during mesh network path deletion when an active lookup reinserts an entry into the fast transmission cache after the cache has been cleared, resulting in a use-after-free condition where memory is accesse...

CVE-2026-98698

A flaw was found in the Linux kernel's mac80211 wireless subsystem. When handling a Fast Initial Link Setup FILS association request frame with an empty payload, the system fails to validate zero-length plaintext before cryptographic processing. This issue causes an invalid memory reference to be...

CVE-2026-98695

A flaw was found in the Linux kernel's USB serial subsystem. A local user could cause a Denial of Service DoS due to a race condition between input/output control ioctl operations and device disconnection. If a USB serial device is disconnected during an active operation, the driver may attempt t...

kernel: ipv4: validate checksum_start before completing checksum

A flaw was found in the Linux kernel. A local attacker or untrusted guest virtual machine can exploit this vulnerability by transmitting network packets containing malformed checksum metadata into the IPv4 networking subsystem. This failure to validate checksum metadata can corrupt memory during...

CVE-2026-98694

A flaw was found in the Linux kernel's Thunderbolt driver. When a control channel request is canceled, a race condition can cause the request to be rescheduled after its memory has already been freed, resulting in a use-after-free vulnerability. A local attacker could exploit this flaw to cause a...

kernel: ipv4: validate checksum_start before completing checksum

A flaw was found in the Linux kernel. A local attacker or untrusted guest virtual machine can exploit this vulnerability by transmitting network packets containing malformed checksum metadata into the IPv4 networking subsystem. This failure to validate checksum metadata can corrupt memory during...

CVE-2026-98693

A flaw was found in the Linux kernel's Thunderbolt driver. A physically proximate user or local attacker could trigger a Denial of Service DoS and crash the system by disconnecting a device or unbinding the driver while DisplayPort tunnel operations are still active. This issue occurs because the...

CVE-2026-98692

A flaw was found in the Linux kernel's Thunderbolt subsystem. DisplayPort DP tunnels activated without a required completion callback fail to release object references during tunnel setup, such as when restoring from system hibernation. A local user or repeated hibernation cycles can cause kernel...

CVE-2026-98691

A flaw was found in the Linux kernel's Thunderbolt subsystem. This vulnerability can lead to a Denial of Service DoS or system instability when a Thunderbolt device is disconnected or unbound. When a Thunderbolt domain is stopped, inactive DisplayPort DP tunnels are not properly torn down, allowi...

CVE-2026-98690

A flaw was found in the Linux kernel's Thunderbolt subsystem. This flaw allows a local user to cause a Denial of Service DoS by causing kernel cleanup operations to hang indefinitely. When a DisplayPort DP tunnel is disconnected before an internal read operation completes, the driver leaks an...

CVE-2026-98689

A flaw was found in the Linux kernel's Thunderbolt subsystem. A race condition occurs when DisplayPort DP read operations are canceled during system suspend or device disconnection, allowing work handlers to access tunnel structures that have already been torn down. A local attacker could trigger...

CVE-2026-98688

A flaw was found in the Linux kernel's Thunderbolt subsystem. A race condition during device removal operations can lead to a NULL pointer dereference. A local user could exploit this timing issue during device disconnection to trigger a kernel crash, resulting in a Denial of Service DoS...

CVE-2026-98687

A flaw was found in the Linux kernel's Thunderbolt driver. When processing property requests from peer devices, the driver fails to verify that the response data length does not exceed the allocated buffer size. A malicious peer can exploit this flaw by sending an oversized response packet,...

CVE-2026-98685

A flaw was found in the Linux kernel's SMB client. This vulnerability can lead to information disclosure when extending a file via a clone range operation. Because the client fails to discard cached memory pages that straddle the original end-of-file boundary, data previously written past the...

CVE-2026-98686

A flaw was found in the Linux kernel's SMB Server Message Block client. When extending a file using a zero-range operation, cached memory pages past the previous end-of-file boundary are not properly discarded. A local user can exploit this vulnerability to view stale or previously buffered data...