CVSS: -EPSS: 0%CPEs: 7EXPL: 0CVE-2024-43894 – drm/client: fix null pointer dereference in drm_client_modeset_probe
https://notcve.org/view.php?id=CVE-2024-43894
In the Linux kernel, the following vulnerability has been resolved: drm/client: fix null pointer dereference in drm_client_modeset_probe In drm_client_modeset_probe(), the return value of drm_mode_duplicate() is assigned to modeset->mode, which will lead to a possible NULL pointer dereference on failure of drm_mode_duplicate(). Add a check to avoid npd. • https://git.kernel.org/stable/c/cf13909aee054f5aa667d4b9da0ac7df4f6c1327 https://git.kernel.org/stable/c/24ddda932c43ffe156c7f3c568bed85131c63ae6 https://git.kernel.org/stable/c/5291d4f73452c91e8a11f71207617e3e234d418e https://git.kernel.org/stable/c/c763dfe09425152b6bb0e348900a637c62c2ce52 https://git.kernel.org/stable/c/d64847c383100423aecb6ac5f18be5f4316d9d62 https://git.kernel.org/stable/c/d64fc94f7bb24fc2be0d6bd5df8df926da461a6d https://git.kernel.org/stable/c/612cae53e99ce32a58cb821b3b67199eb6e92dff https://git.kernel.org/stable/c/113fd6372a5bb3689aba8ef5b8a265ed1 •
CVSS: -EPSS: 0%CPEs: 8EXPL: 0CVE-2024-43893 – serial: core: check uartclk for zero to avoid divide by zero
https://notcve.org/view.php?id=CVE-2024-43893
In the Linux kernel, the following vulnerability has been resolved: serial: core: check uartclk for zero to avoid divide by zero Calling ioctl TIOCSSERIAL with an invalid baud_base can result in uartclk being zero, which will result in a divide by zero error in uart_get_divisor(). The check for uartclk being zero in uart_set_info() needs to be done before other settings are made as subsequent calls to ioctl TIOCSSERIAL for the same port would be impacted if the uartclk check was done where uartclk gets set. Oops: divide error: 0000 PREEMPT SMP KASAN PTI RIP: 0010:uart_get_divisor (drivers/tty/serial/serial_core.c:580) Call Trace: <TASK> serial8250_get_divisor (drivers/tty/serial/8250/8250_port.c:2576 drivers/tty/serial/8250/8250_port.c:2589) serial8250_do_set_termios (drivers/tty/serial/8250/8250_port.c:502 drivers/tty/serial/8250/8250_port.c:2741) serial8250_set_termios (drivers/tty/serial/8250/8250_port.c:2862) uart_change_line_settings (./include/linux/spinlock.h:376 ./include/linux/serial_core.h:608 drivers/tty/serial/serial_core.c:222) uart_port_startup (drivers/tty/serial/serial_core.c:342) uart_startup (drivers/tty/serial/serial_core.c:368) uart_set_info (drivers/tty/serial/serial_core.c:1034) uart_set_info_user (drivers/tty/serial/serial_core.c:1059) tty_set_serial (drivers/tty/tty_io.c:2637) tty_ioctl (drivers/tty/tty_io.c:2647 drivers/tty/tty_io.c:2791) __x64_sys_ioctl (fs/ioctl.c:52 fs/ioctl.c:907 fs/ioctl.c:893 fs/ioctl.c:893) do_syscall_64 (arch/x86/entry/common.c:52 (discriminator 1) arch/x86/entry/common.c:83 (discriminator 1)) entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) Rule: add • https://git.kernel.org/stable/c/3bbd90fca824e6fd61fb20f6dd2b0fa5f8b14bba https://git.kernel.org/stable/c/55b2a5d331a6ceb1c4372945fdb77181265ba24f https://git.kernel.org/stable/c/52b138f1021113e593ee6ad258ce08fe90693a9e https://git.kernel.org/stable/c/9196e42a3b8eeff1707e6ef769112b4b6096be49 https://git.kernel.org/stable/c/e13ba3fe5ee070f8a9dab60029d52b1f61da5051 https://git.kernel.org/stable/c/e3ad503876283ac3fcca922a1bf243ef9eb0b0e2 https://git.kernel.org/stable/c/68dc02f319b9ee54dc23caba742a5c754d1cccc8 https://git.kernel.org/stable/c/6eabce6608d6f3440f4c03aa3d3ef50a4 •
CVSS: 4.7EPSS: 0%CPEs: 8EXPL: 0CVE-2024-43892 – memcg: protect concurrent access to mem_cgroup_idr
https://notcve.org/view.php?id=CVE-2024-43892
In the Linux kernel, the following vulnerability has been resolved: memcg: protect concurrent access to mem_cgroup_idr Commit 73f576c04b94 ("mm: memcontrol: fix cgroup creation failure after many small jobs") decoupled the memcg IDs from the CSS ID space to fix the cgroup creation failures. It introduced IDR to maintain the memcg ID space. The IDR depends on external synchronization mechanisms for modifications. For the mem_cgroup_idr, the idr_alloc() and idr_replace() happen within css callback and thus are protected through cgroup_mutex from concurrent modifications. However idr_remove() for mem_cgroup_idr was not protected against concurrency and can be run concurrently for different memcgs when they hit their refcnt to zero. • https://git.kernel.org/stable/c/73f576c04b9410ed19660f74f97521bee6e1c546 https://git.kernel.org/stable/c/8627c7750a66a46d56d3564e1e881aa53764497c https://git.kernel.org/stable/c/db70cd18d3da727a3a59694de428a9e41c620de7 https://git.kernel.org/stable/c/912736a0435ef40e6a4ae78197ccb5553cb80b05 https://git.kernel.org/stable/c/e6cc9ff2ac0b5df9f25eb790934c3104f6710278 https://git.kernel.org/stable/c/56fd70f4aa8b82199dbe7e99366b1fd7a04d86fb https://git.kernel.org/stable/c/37a060b64ae83b76600d187d76591ce488ab836b https://git.kernel.org/stable/c/51c0b1bb7541f8893ec1accba59eb0436 • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') •
CVSS: -EPSS: 0%CPEs: 3EXPL: 0CVE-2024-43891 – tracing: Have format file honor EVENT_FILE_FL_FREED
https://notcve.org/view.php?id=CVE-2024-43891
In the Linux kernel, the following vulnerability has been resolved: tracing: Have format file honor EVENT_FILE_FL_FREED When eventfs was introduced, special care had to be done to coordinate the freeing of the file meta data with the files that are exposed to user space. The file meta data would have a ref count that is set when the file is created and would be decremented and freed after the last user that opened the file closed it. When the file meta data was to be freed, it would set a flag (EVENT_FILE_FL_FREED) to denote that the file is freed, and any new references made (like new opens or reads) would fail as it is marked freed. This allowed other meta data to be freed after this flag was set (under the event_mutex). All the files that were dynamically created in the events directory had a pointer to the file meta data and would call event_release() when the last reference to the user space file was closed. This would be the time that it is safe to free the file meta data. A shortcut was made for the "format" file. • https://git.kernel.org/stable/c/14aa4f3efc6e784847e8c8543a7ef34ec9bdbb01 https://git.kernel.org/stable/c/b63db58e2fa5d6963db9c45df88e60060f0ff35f https://git.kernel.org/stable/c/4ed03758ddf0b19d69eed69386d65a92d0091e0c https://git.kernel.org/stable/c/531dc6780d94245af037c25c2371c8caf652f0f9 https://git.kernel.org/stable/c/b1560408692cd0ab0370cfbe9deb03ce97ab3f6d •
CVSS: -EPSS: 0%CPEs: 8EXPL: 0CVE-2024-43890 – tracing: Fix overflow in get_free_elt()
https://notcve.org/view.php?id=CVE-2024-43890
In the Linux kernel, the following vulnerability has been resolved: tracing: Fix overflow in get_free_elt() "tracing_map->next_elt" in get_free_elt() is at risk of overflowing. Once it overflows, new elements can still be inserted into the tracing_map even though the maximum number of elements (`max_elts`) has been reached. Continuing to insert elements after the overflow could result in the tracing_map containing "tracing_map->max_size" elements, leaving no empty entries. If any attempt is made to insert an element into a full tracing_map using `__tracing_map_insert()`, it will cause an infinite loop with preemption disabled, leading to a CPU hang problem. Fix this by preventing any further increments to "tracing_map->next_elt" once it reaches "tracing_map->max_elt". • https://git.kernel.org/stable/c/08d43a5fa063e03c860f2f391a30c388bcbc948e https://git.kernel.org/stable/c/302ceb625d7b990db205a15e371f9a71238de91c https://git.kernel.org/stable/c/d3e4dbc2858fe85d1dbd2e72a9fc5dea988b5c18 https://git.kernel.org/stable/c/eb223bf01e688dfe37e813c8988ee11c8c9f8d0a https://git.kernel.org/stable/c/cd10d186a5409a1fe6e976df82858e9773a698da https://git.kernel.org/stable/c/788ea62499b3c18541fd6d621964d8fafbc4aec5 https://git.kernel.org/stable/c/a172c7b22bc2feaf489cfc6d6865f7237134fdf8 https://git.kernel.org/stable/c/236bb4690773ab6869b40bedc7bc8d889 •