CVE Vulnerability Catalog

A vulnerability was found in the Linux kernel's Bluetooth stack where hci_adv_bcast_annoucement() can cause a temporary buffer overflow when preparing Broadcast Announcement data. The issue occurs when existing advertising instances already hold the maximum extended advertising payload, and prepending service data exceeds the buffer capacity.

In the Linux kernel, the accel/ivpu driver now validates firmware log buffer read/write indices against buffer size. Missing bounds checks could allow out-of-bounds memory access when firmware supplies invalid indices.

In the Linux kernel, a buffer overflow check was added in the accel/ivpu driver's get_info_ioctl function. Missing validation of the size returned by firmware could lead to copying data beyond the allocated buffer.

In the Linux kernel, the accel/ivpu driver has a vulnerability in IPC receive due to signed integer truncation. Large unsigned values (>= 0x80000000) from firmware are cast to signed int, causing negative values and stack buffer overflow during memcpy.

In the Linux kernel, an optimization that skipped exec queue schedule toggle during suspend was reverted because it bypassed GuC suspend, preventing context switch TLB flush for invalidated userptr VMAs. This caused page faults in userptr invalidation tests in LR/preempt-fence VM mode.

A vulnerability was found in the Linux kernel's KVM for ARM64, affecting the handling of the XN[0] bit when FEAT_XNX is not supported. The bug incorrectly uses FIELD_PREP() on the mask that clears XN[0], unconditionally granting execute permissions.

In the Linux kernel, the hv_netvsc driver used phys_to_virt() for mapping memory pages, which on 32-bit x86 with CONFIG_HIGHMEM=y causes memory access faults and system crashes. The fix replaces phys_to_virt() with kmap_local_page() to correctly handle pages outside the kernel direct map.

In the Linux kernel, a use-after-free vulnerability was found in ksmbd related to a deferred file_lock during double SMB2_CANCEL. A second cancel for the same AsyncId triggers the cancel callback on already freed memory, leading to a security breach.

In the Linux kernel, a vulnerability in the USB serial io_ti driver was found where build_i2c_fw_hdr() allocates a fixed-size buffer but copies user-controlled length data (up to 65535 bytes) without validation, causing a heap overflow.

A buffer overflow vulnerability was found in the kl5kusb105 USB serial driver in the Linux kernel. The klsi_105_prepare_write_buffer() function copies data from the fifo into a 64-byte buffer without accounting for the two-byte header, causing an out-of-bounds write. The issue was observed by KASAN during device emulation.

In the Linux kernel, a use-after-free vulnerability was found in the ALSA timer subsystem. When a timer object is freed via snd_timer_free, slave timer instances still point to the freed object, leading to potential memory corruption. The bug is easily triggered with the new userspace-driven timers (CONFIG_SND_UTIMER).

A use-after-free (UAF) vulnerability was found in the snd_timer_user_params() function of the ALSA driver in the Linux kernel. The issue occurs when a user timer (CONFIG_SND_UTIMER) is being closed while another thread concurrently executes the SNDRV_TIMER_IOCTL_PARAMS ioctl, which was not protected by the register_mutex. The patch adds the missing synchronization to prevent the race condition.

In the Linux kernel's io_uring/net subsystem, a vulnerability was found due to improper inheritance of the IORING_CQE_F_BUF_MORE flag during bundle recv retries. The flag was missing from the CQE_F_MASK, causing it to be dropped and leading to incorrect buffer management by userspace.

In the Linux kernel, a vulnerability was found in __split_huge_pmd_locked() where the file/shmem RSS counter was updated after dropping the folio reference. If folio_put() released the last reference, subsequent reads of folio state by mm_counter_file() could access freed memory.

In the Linux kernel RDMA/core component, a vulnerability was found due to missing validation of the file operations structure (fops) in the ib_get_ucaps() function. An attacker can use a block device with the same device number (dev_t) to impersonate a legitimate ucap cdev device.

In the Linux kernel RDMA/core subsystem, the cpu_id attribute from user space is passed to cpumask_test_cpu() without validation, potentially causing an out-of-bounds read of the CPU bitmap. With CONFIG_DEBUG_PER_CPU_MAPS and panic_on_warn enabled, this can lead to a system reboot.

A use-after-free vulnerability was found in the zram_bvec_write_partial() function of the Linux kernel's zram driver. During partial write, the read from the backing device is performed asynchronously, and the buffer page is freed before the read completes, causing a write to freed memory.

In the Linux kernel, a vulnerability exists in the UDP receive path where skb->dev is repurposed as dev_scratch (state cache). When a UDP socket is in a sockmap, the SK_SKB verdict program may call a socket lookup helper (bpf_sk_lookup) that reads skb->dev as a net_device pointer, leading to a non-canonical address dereference and a general protection fault (GPF) in softirq context.

In the Linux kernel's MPTCP implementation, a vulnerability was found where the TCP receive window is artificially inflated. When data is acknowledged at the TCP level but is out-of-order in the MPTCP sequence space, the receive window cannot shrink, causing the receive buffer to be exceeded. The patch allows the TCP subflow to shrink the receive window regardless of network settings.

In the Linux kernel, a vulnerability was found in nl80211_parse_rnr_elems() where the element count is stored in an 8-bit field of the cfg80211_rnr_elems structure. Lack of proper validation before incrementing the counter may lead to buffer overflow when processing oversized EMA RNR lists.