UBUNTU-CVE-2023-53489

In the Linux kernel, the following vulnerability has been resolved: tcp/udp: Fix memleaks of sk and zerocopy skbs with TX timestamp. syzkaller reported 0 memory leaks of an UDP socket and ZEROCOPY skbs. We can reproduce the problem with these sequences: sk = socketAFINET, SOCKDGRAM, 0...

UBUNTU-CVE-2023-53496

In the Linux kernel, the following vulnerability has been resolved: x86/platform/uv: Use alternate source for socket to node data The UV code attempts to build a set of tables to allow it to do bidirectional socketnode lookups. But when nrcpus is set to a smaller number than actually present, the...

CVE-2023-53496 x86/platform/uv: Use alternate source for socket to node data

In the Linux kernel, the following vulnerability has been resolved: x86/platform/uv: Use alternate source for socket to node data The UV code attempts to build a set of tables to allow it to do bidirectional socketnode lookups. But when nrcpus is set to a smaller number than actually present, the...

CVE-2023-53496

CVE-2023-53496 – In the Linux kernel, the UV (socketnode lookup) code loops over CPUs to build socket tables; when nr_cpus is less than actual CPUs, cpu_to_node() data for unused CPUs is missing, leading to -1 entries and potential oops. The fix replaces the CPU-loop with a loop over APICIDs mapp...

CVE-2023-53496 x86/platform/uv: Use alternate source for socket to node data

In the Linux kernel, the following vulnerability has been resolved: x86/platform/uv: Use alternate source for socket to node data The UV code attempts to build a set of tables to allow it to do bidirectional socketnode lookups. But when nrcpus is set to a smaller number than actually present, the...

CVE-2023-53489 tcp/udp: Fix memleaks of sk and zerocopy skbs with TX timestamp.

In the Linux kernel, the following vulnerability has been resolved: tcp/udp: Fix memleaks of sk and zerocopy skbs with TX timestamp. syzkaller reported 0 memory leaks of an UDP socket and ZEROCOPY skbs. We can reproduce the problem with these sequences: sk = socketAFINET, SOCKDGRAM, 0...

CVE-2023-53489 tcp/udp: Fix memleaks of sk and zerocopy skbs with TX timestamp.

In the Linux kernel, the following vulnerability has been resolved: tcp/udp: Fix memleaks of sk and zerocopy skbs with TX timestamp. syzkaller reported 0 memory leaks of an UDP socket and ZEROCOPY skbs. We can reproduce the problem with these sequences: sk = socketAFINET, SOCKDGRAM, 0...

CVE-2022-50459 scsi: iscsi: iscsi_tcp: Fix null-ptr-deref while calling getpeername()

In the Linux kernel, the following vulnerability has been resolved: scsi: iscsi: iscsitcp: Fix null-ptr-deref while calling getpeername Fix a NULL pointer crash that occurs when we are freeing the socket at the same time we access it via sysfs. The problem is that: 1. iscsiswtcpconngetparam and...

CVE-2022-50459

CVE-2022-50459 affects the Linux kernel’s iSCSI TCP path (scsi: iscsi: iscsi_tcp) where a NULL pointer dereference can occur if a socket is freed while accessed via sysfs. Details describe the sequence: sock_hold() on struct sock, then sockfd_put() frees the socket, __sock_release() clears sock-&...

CVE-2022-50459 scsi: iscsi: iscsi_tcp: Fix null-ptr-deref while calling getpeername()

In the Linux kernel, the following vulnerability has been resolved: scsi: iscsi: iscsitcp: Fix null-ptr-deref while calling getpeername Fix a NULL pointer crash that occurs when we are freeing the socket at the same time we access it via sysfs. The problem is that: 1. iscsiswtcpconngetparam and...

CVE-2023-53466 wifi: mt76: mt7915: fix memory leak in mt7915_mcu_exit

In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7915: fix memory leak in mt7915mcuexit Always purge mcu skb queues in mt7915mcuexit routine even if mt7915firmwarestate fails...

CVE-2023-53464 scsi: iscsi_tcp: Check that sock is valid before iscsi_set_param()

In the Linux kernel, the following vulnerability has been resolved: scsi: iscsitcp: Check that sock is valid before iscsisetparam The validity of sock should be checked before assignment to avoid incorrect values. Commit 57569c37f0ad "scsi: iscsi: iscsitcp: Fix null-ptr-deref while calling...

CVE-2023-53464

CVE-2023-53464 affects the Linux kernel: the iscsi_tcp path in SCSI may assign values to tcp_sw_conn->sendpage and conn->datadgst_en before validating sock, risking inconsistency due to a null/invalid sock. The fix relocates the assignment so the sock is validated prior to use, as described...

CVE-2025-39897

In the Linux kernel, the following vulnerability has been resolved: net: xilinx: axienet: Add error handling for RX metadata pointer retrieval Add proper error checking for dmaenginedescgetmetadataptr which can return an error pointer and lead to potential crashes or undefined behaviour if the...

UBUNTU-CVE-2025-39897

In the Linux kernel, the following vulnerability has been resolved: net: xilinx: axienet: Add error handling for RX metadata pointer retrieval Add proper error checking for dmaenginedescgetmetadataptr which can return an error pointer and lead to potential crashes or undefined behaviour if the...

CVE-2025-39925 can: j1939: implement NETDEV_UNREGISTER notification handler

In the Linux kernel, the following vulnerability has been resolved: can: j1939: implement NETDEVUNREGISTER notification handler syzbot is reporting unregisternetdevice: waiting for vcan0 to become free. Usage count = 2 problem, for j1939 protocol did not have NETDEVUNREGISTER notification handler...

CVE-2025-39913 tcp_bpf: Call sk_msg_free() when tcp_bpf_send_verdict() fails to allocate psock->cork.

In the Linux kernel, the following vulnerability has been resolved: tcpbpf: Call skmsgfree when tcpbpfsendverdict fails to allocate psock-cork. syzbot reported the splat below. 0 The repro does the following: 1. Load a skmsg prog that calls bpfmsgcorkbytesmsg, corkbytes 2. Attach the prog to a...

CVE-2025-39913

In the Linux kernel, the following vulnerability has been resolved: tcpbpf: Call skmsgfree when tcpbpfsendverdict fails to allocate psock-cork. syzbot reported the splat below. 0 The repro does the following: 1. Load a skmsg prog that calls bpfmsgcorkbytesmsg, corkbytes 2. Attach the prog to a...

CVE-2025-39897 net: xilinx: axienet: Add error handling for RX metadata pointer retrieval

In the Linux kernel, the following vulnerability has been resolved: net: xilinx: axienet: Add error handling for RX metadata pointer retrieval Add proper error checking for dmaenginedescgetmetadataptr which can return an error pointer and lead to potential crashes or undefined behaviour if the...

kernel: udp: Fix memory accounting leak.

A memory overflow vulnerability exists within the Linux kernel's networking subsystem. Specifically, an application can set the SORCVBUF socket option to its maximum value INTMAX, which triggers an integer overflow within the udprmemrelease function during socket closure. The udpdestructcommon...