CVSS: 6.1EPSS: 0%CPEs: 3EXPL: 0CVE-2024-41014 – xfs: add bounds checking to xlog_recover_process_data
https://notcve.org/view.php?id=CVE-2024-41014
In the Linux kernel, the following vulnerability has been resolved: xfs: add bounds checking to xlog_recover_process_data There is a lack of verification of the space occupied by fixed members of xlog_op_header in the xlog_recover_process_data. We can create a crafted image to trigger an out of bounds read by following these steps: 1) Mount an image of xfs, and do some file operations to leave records 2) Before umounting, copy the image for subsequent steps to simulate abnormal exit. Because umount will ensure that tail_blk and head_blk are the same, which will result in the inability to enter xlog_recover_process_data 3) Write a tool to parse and modify the copied image in step 2 4) Make the end of the xlog_op_header entries only 1 byte away from xlog_rec_header->h_size 5) xlog_rec_header->h_num_logops++ 6) Modify xlog_rec_header->h_crc Fix: Add a check to make sure there is sufficient space to access fixed members of xlog_op_header. • https://git.kernel.org/stable/c/d1e3efe783365db59da88f08a2e0bfe1cc95b143 https://git.kernel.org/stable/c/7cd9f0a33e738cd58876f1bc8d6c1aa5bc4fc8c1 https://git.kernel.org/stable/c/fb63435b7c7dc112b1ae1baea5486e0a6e27b196 https://access.redhat.com/security/cve/CVE-2024-41014 https://bugzilla.redhat.com/show_bug.cgi?id=2300297 • CWE-125: Out-of-bounds Read •
CVSS: 7.1EPSS: 0%CPEs: 1EXPL: 0CVE-2024-41013 – xfs: don't walk off the end of a directory data block
https://notcve.org/view.php?id=CVE-2024-41013
In the Linux kernel, the following vulnerability has been resolved: xfs: don't walk off the end of a directory data block This adds sanity checks for xfs_dir2_data_unused and xfs_dir2_data_entry to make sure don't stray beyond valid memory region. Before patching, the loop simply checks that the start offset of the dup and dep is within the range. So in a crafted image, if last entry is xfs_dir2_data_unused, we can change dup->length to dup->length-1 and leave 1 byte of space. In the next traversal, this space will be considered as dup or dep. We may encounter an out of bound read when accessing the fixed members. In the patch, we make sure that the remaining bytes large enough to hold an unused entry before accessing xfs_dir2_data_unused and xfs_dir2_data_unused is XFS_DIR2_DATA_ALIGN byte aligned. • https://git.kernel.org/stable/c/0c7fcdb6d06cdf8b19b57c17605215b06afa864a https://access.redhat.com/security/cve/CVE-2024-41013 https://bugzilla.redhat.com/show_bug.cgi?id=2300296 • CWE-125: Out-of-bounds Read •
CVSS: 7.1EPSS: 0%CPEs: 8EXPL: 0CVE-2024-41091 – tun: add missing verification for short frame
https://notcve.org/view.php?id=CVE-2024-41091
In the Linux kernel, the following vulnerability has been resolved: tun: add missing verification for short frame The cited commit missed to check against the validity of the frame length in the tun_xdp_one() path, which could cause a corrupted skb to be sent downstack. Even before the skb is transmitted, the tun_xdp_one-->eth_type_trans() may access the Ethernet header although it can be less than ETH_HLEN. Once transmitted, this could either cause out-of-bound access beyond the actual length, or confuse the underlayer with incorrect or inconsistent header length in the skb metadata. In the alternative path, tun_get_user() already prohibits short frame which has the length less than Ethernet header size from being transmitted for IFF_TAP. This is to drop any frame shorter than the Ethernet header size just like how tun_get_user() does. CVE: CVE-2024-41091 A denial of service (DoS) attack was found in the mlx5 driver in the Linux kernel. A KVM guest VM using virtio-net can crash the host by sending a short packet, for example, size < ETH_HLEN. The packet may traverse through vhost-net, macvtap, and vlan without any validation or drop. • https://git.kernel.org/stable/c/043d222f93ab8c76b56a3b315cd8692e35affb6c https://git.kernel.org/stable/c/32b0aaba5dbc85816898167d9b5d45a22eae82e9 https://git.kernel.org/stable/c/6100e0237204890269e3f934acfc50d35fd6f319 https://git.kernel.org/stable/c/589382f50b4a5d90d16d8bc9dcbc0e927a3e39b2 https://git.kernel.org/stable/c/ad6b3f622ccfb4bfedfa53b6ebd91c3d1d04f146 https://git.kernel.org/stable/c/d5ad89b7d01ed4e66fd04734fc63d6e78536692a https://git.kernel.org/stable/c/a9d1c27e2ee3b0ea5d40c105d6e728fc114470bb https://git.kernel.org/stable/c/8418f55302fa1d2eeb73e16e345167e54 • CWE-20: Improper Input Validation •
CVSS: 7.1EPSS: 0%CPEs: 8EXPL: 0CVE-2024-41090 – tap: add missing verification for short frame
https://notcve.org/view.php?id=CVE-2024-41090
In the Linux kernel, the following vulnerability has been resolved: tap: add missing verification for short frame The cited commit missed to check against the validity of the frame length in the tap_get_user_xdp() path, which could cause a corrupted skb to be sent downstack. Even before the skb is transmitted, the tap_get_user_xdp()-->skb_set_network_header() may assume the size is more than ETH_HLEN. Once transmitted, this could either cause out-of-bound access beyond the actual length, or confuse the underlayer with incorrect or inconsistent header length in the skb metadata. In the alternative path, tap_get_user() already prohibits short frame which has the length less than Ethernet header size from being transmitted. This is to drop any frame shorter than the Ethernet header size just like how tap_get_user() does. CVE: CVE-2024-41090 A denial of service (DoS) attack was found in the mlx5 driver in the Linux kernel. A KVM guest VM using virtio-net can crash the host by sending a short packet, for example, size < ETH_HLEN. The packet may traverse through vhost-net, macvtap, and vlan without any validation or drop. • https://git.kernel.org/stable/c/0efac27791ee068075d80f07c55a229b1335ce12 https://git.kernel.org/stable/c/8be915fc5ff9a5e296f6538be12ea75a1a93bdea https://git.kernel.org/stable/c/7431144b406ae82807eb87d8c98e518475b0450f https://git.kernel.org/stable/c/e5e5e63c506b93b89b01f522b6a7343585f784e6 https://git.kernel.org/stable/c/ee93e6da30377cf2a75e16cd32bb9fcd86a61c46 https://git.kernel.org/stable/c/aa6a5704cab861c9b2ae9f475076e1881e87f5aa https://git.kernel.org/stable/c/73d462a38d5f782b7c872fe9ae8393d9ef5483da https://git.kernel.org/stable/c/e1a786b9bbb767fd1c922d424aaa8078c • CWE-20: Improper Input Validation •
CVSS: 5.5EPSS: 0%CPEs: 8EXPL: 0CVE-2024-41012 – filelock: Remove locks reliably when fcntl/close race is detected
https://notcve.org/view.php?id=CVE-2024-41012
In the Linux kernel, the following vulnerability has been resolved: filelock: Remove locks reliably when fcntl/close race is detected When fcntl_setlk() races with close(), it removes the created lock with do_lock_file_wait(). However, LSMs can allow the first do_lock_file_wait() that created the lock while denying the second do_lock_file_wait() that tries to remove the lock. Separately, posix_lock_file() could also fail to remove a lock due to GFP_KERNEL allocation failure (when splitting a range in the middle). After the bug has been triggered, use-after-free reads will occur in lock_get_status() when userspace reads /proc/locks. This can likely be used to read arbitrary kernel memory, but can't corrupt kernel memory. Fix it by calling locks_remove_posix() instead, which is designed to reliably get rid of POSIX locks associated with the given file and files_struct and is also used by filp_flush(). En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: filelock: Elimina bloqueos de manera confiable cuando se detecta fcntl/close race Cuando fcntl_setlk() corre con close(), elimina el bloqueo creado con do_lock_file_wait(). Sin embargo, los LSM pueden permitir el primer do_lock_file_wait() que creó el bloqueo y al mismo tiempo negar el segundo do_lock_file_wait() que intenta eliminar el bloqueo. Por separado, posix_lock_file() también podría no eliminar un bloqueo debido a un fallo en la asignación de GFP_KERNEL (al dividir un rango por la mitad). • https://git.kernel.org/stable/c/c293621bbf678a3d85e3ed721c3921c8a670610d https://git.kernel.org/stable/c/d30ff33040834c3b9eee29740acd92f9c7ba2250 https://git.kernel.org/stable/c/dc2ce1dfceaa0767211a9d963ddb029ab21c4235 https://git.kernel.org/stable/c/5661b9c7ec189406c2dde00837aaa4672efb6240 https://git.kernel.org/stable/c/52c87ab18c76c14d7209646ccb3283b3f5d87b22 https://git.kernel.org/stable/c/ef8fc41cd6f95f9a4a3470f085aecf350569a0b3 https://git.kernel.org/stable/c/5f5d0799eb0a01d550c21b7894e26b2d9db55763 https://git.kernel.org/stable/c/b6d223942c34057fdfd8f149e763fa823 •