CVE Vulnerability Catalog

In the Linux kernel, a vulnerability in BPF leaves the offload->prog pointer stale after JIT compilation with constant blinding, pointing to a freed program. This causes a page fault when the network namespace is destroyed.

In the Linux kernel, the brcmfmac driver for Broadcom Wi-Fi cards has a bug where the return value of brcmf_chip_add_core() is not checked for error pointers. This can lead to dereferencing an error pointer and potentially cause system instability.

In the Linux kernel's BPF subsystem, adjust_reg_min_max_vals() incorrectly tracks register delta when src_reg == dst_reg (e.g., rX += rX). Modifying dst_reg before reading src_reg sets an incorrect delta, causing a verifier-vs-runtime mismatch.

In the Linux kernel, a vulnerability was found in the qdisc_pkt_len_segs_init() function, which did not ensure that GSO packet headers are in the skb->head buffer. This can cause errors in network drivers that expect headers in this buffer. Added proper checking and early rejection of malicious packets.

In the Linux kernel, a vulnerability was found in the BPF verifier regarding ld_{abs,ind} instructions in subprograms. The verifier did not simulate the failure path of packet data load, which could lead to incorrect analysis. Added simulation of both success and failure paths, similar to tail calls.

In the Linux kernel, in the BPF subsystem, a use-after-free (UAF) occurs when filling info for offloaded maps or programs. bpf_map_offload_info_fill_ns() and bpf_prog_offload_info_fill_ns() use get_net() on a netdev's netns that may already be destroyed.

Vulnerability in the Linux kernel in the bcmgenet driver (Broadcom GENET Ethernet) due to an off-by-one error in bcmgenet_put_txcb. Incorrect pointer rewind may lead to improper cleanup of the transmit buffer.

In the Linux kernel, the bcmgenet driver has a bug leaking free buffer descriptors (free_bds) when reclaiming the TX queue. Dropped frames are not returned to the pool, potentially leading to resource exhaustion.

In the Linux kernel, the bcmgenet driver has a flawed timeout handler: it stops all transmit queues when a single queue times out, causing race conditions with queues that are still functioning. The fix restarts only the timed-out queue.

In the Linux kernel, the open-coded task_vma BPF iterator has a use-after-free (UAF) vulnerability. The iterator reads task->mm locklessly and does not call mmget(), allowing the mm_struct to be freed during concurrent process exit.

In the Linux kernel task_vma iterator, there is a lock ordering issue. Holding the VMA lock during BPF program execution can lead to deadlocks. The fix takes a VMA snapshot and releases the lock before returning.

In the Linux kernel, the bpf_fd_array_map_clear() function is missing a cond_resched() call in its loop, which can cause RCU stalls and system crashes when clearing PROG_ARRAY maps with many entries.

In the 6pack (hamradio) driver in the Linux kernel, the sixpack_receive_buf() function does not skip bytes with TTY error flags, leading to processing of uninitialized data and KMSAN reporting an uninit-value read.

In the Linux kernel's BPF subsystem, a vulnerability was found due to inconsistent ID mapping for scalar registers with the BPF_ADD_CONST flag. The regsafe() function fails to verify that underlying base IDs are consistent with existing mappings, potentially leading to incorrect verifier state pruning.

In the Linux kernel, a vulnerability in the cls_fw classifier allows a filter to be published to the datapath before the change() function is called, leading to a NULL pointer dereference when an invalid filter is processed.

A memory leak was found in the Linux kernel in the deferred packet drop mechanism of qdiscs. When the root qdisc does not implement the TCQ_F_DEQUEUE_DROPS flag, packets to be freed are not released and remain on a local list.

In the Linux kernel, in BPF sock_ops programs, when the destination register is the same as the source, the SOCK_OPS_GET_SK() and SOCK_OPS_GET_FIELD() macros fail to zero the destination register in the !fullsock / !locked_tcp_sock path. This leads to stack out-of-bounds read and kernel pointer leak.

In the Linux kernel, the use of RDS/IB is now restricted to the initial network namespace. The RDS/IB code does not work correctly in other namespaces, which could lead to errors or unexpected behavior.

In the Linux kernel, an out-of-bounds read occurs in pcpu_init_value when copying data from a CGROUP_STORAGE map to a pcpu map with the same value size not rounded up to 8 bytes. The issue arises when the source has less than 8 bytes and the copy is rounded up.

In the Linux kernel, the ppp driver lacks a requirement for CAP_NET_ADMIN in the target network namespace for unattached ioctls. A local unprivileged user can create a new user namespace, gain CAP_NET_ADMIN only in that namespace, and then issue PPPIOCNEWUNIT, PPPIOCATTACH, or PPPIOCATTCHAN against an inherited network namespace.