CVSS: -EPSS: 0%CPEs: 3EXPL: 0CVE-2022-48628 – ceph: drop messages from MDS when unmounting
https://notcve.org/view.php?id=CVE-2022-48628
In the Linux kernel, the following vulnerability has been resolved: ceph: drop messages from MDS when unmounting When unmounting all the dirty buffers will be flushed and after the last osd request is finished the last reference of the i_count will be released. Then it will flush the dirty cap/snap to MDSs, and the unmounting won't wait the possible acks, which will ihold the inodes when updating the metadata locally but makes no sense any more, of this. This will make the evict_inodes() to skip these inodes. If encrypt is enabled the kernel generate a warning when removing the encrypt keys when the skipped inodes still hold the keyring: WARNING: CPU: 4 PID: 168846 at fs/crypto/keyring.c:242 fscrypt_destroy_keyring+0x7e/0xd0 CPU: 4 PID: 168846 Comm: umount Tainted: G S 6.1.0-rc5-ceph-g72ead199864c #1 Hardware name: Supermicro SYS-5018R-WR/X10SRW-F, BIOS 2.0 12/17/2015 RIP: 0010:fscrypt_destroy_keyring+0x7e/0xd0 RSP: 0018:ffffc9000b277e28 EFLAGS: 00010202 RAX: 0000000000000002 RBX: ffff88810d52ac00 RCX: ffff88810b56aa00 RDX: 0000000080000000 RSI: ffffffff822f3a09 RDI: ffff888108f59000 RBP: ffff8881d394fb88 R08: 0000000000000028 R09: 0000000000000000 R10: 0000000000000001 R11: 11ff4fe6834fcd91 R12: ffff8881d394fc40 R13: ffff888108f59000 R14: ffff8881d394f800 R15: 0000000000000000 FS: 00007fd83f6f1080(0000) GS:ffff88885fd00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f918d417000 CR3: 000000017f89a005 CR4: 00000000003706e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> generic_shutdown_super+0x47/0x120 kill_anon_super+0x14/0x30 ceph_kill_sb+0x36/0x90 [ceph] deactivate_locked_super+0x29/0x60 cleanup_mnt+0xb8/0x140 task_work_run+0x67/0xb0 exit_to_user_mode_prepare+0x23d/0x240 syscall_exit_to_user_mode+0x25/0x60 do_syscall_64+0x40/0x80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fd83dc39e9b Later the kernel will crash when iput() the inodes and dereferencing the "sb->s_master_keys", which has been released by the generic_shutdown_super(). • https://git.kernel.org/stable/c/89744b64914426cbabceb3d8a149176b5dafdfb5 https://git.kernel.org/stable/c/47f82395f04a976d4fa97de7f2acffa1c1096571 https://git.kernel.org/stable/c/e3dfcab2080dc1f9a4b09cc1327361bc2845bfcd •
CVSS: 5.5EPSS: 0%CPEs: 6EXPL: 0CVE-2022-48627 – vt: fix memory overlapping when deleting chars in the buffer
https://notcve.org/view.php?id=CVE-2022-48627
In the Linux kernel, the following vulnerability has been resolved: vt: fix memory overlapping when deleting chars in the buffer A memory overlapping copy occurs when deleting a long line. This memory overlapping copy can cause data corruption when scr_memcpyw is optimized to memcpy because memcpy does not ensure its behavior if the destination buffer overlaps with the source buffer. The line buffer is not always broken, because the memcpy utilizes the hardware acceleration, whose result is not deterministic. Fix this problem by using replacing the scr_memcpyw with scr_memmovew. En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: vt: corrige la superposición de memoria al eliminar caracteres en el búfer. Se produce una copia de memoria superpuesta al eliminar una línea larga. • https://git.kernel.org/stable/c/81732c3b2fede049a692e58a7ceabb6d18ffb18c https://git.kernel.org/stable/c/c8686c014b5e872ba7e334f33ca553f14446fc29 https://git.kernel.org/stable/c/815be99d934e3292906536275f2b8d5131cdf52c https://git.kernel.org/stable/c/bfee93c9a6c395f9aa62268f1cedf64999844926 https://git.kernel.org/stable/c/57964a5710252bc82fe22d9fa98c180c58c20244 https://git.kernel.org/stable/c/14d2cc21ca622310babf373e3a8f0b40acfe8265 https://git.kernel.org/stable/c/39cdb68c64d84e71a4a717000b6e5de208ee60cc https://lists.debian.org/debian-lts-announce/2024/06/ • CWE-1260: Improper Handling of Overlap Between Protected Memory Ranges •
CVSS: -EPSS: 0%CPEs: 9EXPL: 0CVE-2021-47068 – net/nfc: fix use-after-free llcp_sock_bind/connect
https://notcve.org/view.php?id=CVE-2021-47068
In the Linux kernel, the following vulnerability has been resolved: net/nfc: fix use-after-free llcp_sock_bind/connect Commits 8a4cd82d ("nfc: fix refcount leak in llcp_sock_connect()") and c33b1cc62 ("nfc: fix refcount leak in llcp_sock_bind()") fixed a refcount leak bug in bind/connect but introduced a use-after-free if the same local is assigned to 2 different sockets. This can be triggered by the following simple program: int sock1 = socket( AF_NFC, SOCK_STREAM, NFC_SOCKPROTO_LLCP ); int sock2 = socket( AF_NFC, SOCK_STREAM, NFC_SOCKPROTO_LLCP ); memset( &addr, 0, sizeof(struct sockaddr_nfc_llcp) ); addr.sa_family = AF_NFC; addr.nfc_protocol = NFC_PROTO_NFC_DEP; bind( sock1, (struct sockaddr*) &addr, sizeof(struct sockaddr_nfc_llcp) ) bind( sock2, (struct sockaddr*) &addr, sizeof(struct sockaddr_nfc_llcp) ) close(sock1); close(sock2); Fix this by assigning NULL to llcp_sock->local after calling nfc_llcp_local_put. This addresses CVE-2021-23134. En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net/nfc: corrige use-after-free llcp_sock_bind/connect Commits 8a4cd82d ("nfc: corrige la fuga de refcount en llcp_sock_connect()") y c33b1cc62 ("nfc: corrige la fuga de refcount en llcp_sock_bind()") corrigió un error de fuga de recuento en bind/connect pero introdujo un Use-After-Free si el mismo local está asignado a 2 sockets diferentes. Esto puede activarse mediante el siguiente programa simple: int sock1 = socket( AF_NFC, SOCK_STREAM, NFC_SOCKPROTO_LLCP ); int sock2 = conector (AF_NFC, SOCK_STREAM, NFC_SOCKPROTO_LLCP); memset( &addr, 0, sizeof(struct sockaddr_nfc_llcp) ); addr.sa_family = AF_NFC; addr.nfc_protocol = NFC_PROTO_NFC_DEP; bind( sock1, (struct sockaddr*) & addr, sizeof(struct sockaddr_nfc_llcp) ) bind( sock2, (struct sockaddr*) & addr, sizeof(struct sockaddr_nfc_llcp) ) close(sock1); cerrar(calcetín2); Solucione este problema asignando NULL a llcp_sock->local después de llamar a nfc_llcp_local_put. Esto aborda CVE-2021-23134. • https://git.kernel.org/stable/c/a1cdd18c49d23ec38097ac2c5b0d761146fc0109 https://git.kernel.org/stable/c/18013007b596771bf5f5e7feee9586fb0386ad14 https://git.kernel.org/stable/c/538a6ff11516d38a61e237d2d2dc04c30c845fbe https://git.kernel.org/stable/c/adbb1d218c5f56dbae052765da83c0f57fce2a31 https://git.kernel.org/stable/c/c89903c9eff219a4695e63715cf922748d743f65 https://git.kernel.org/stable/c/6fb003e5ae18d8cda4c8a1175d9dd8db12bec049 https://git.kernel.org/stable/c/8c9e4971e142e2899606a2490b77a1208c1f4638 https://git.kernel.org/stable/c/c33b1cc62ac05c1dbb1cdafe2eb66da01 •
CVSS: -EPSS: 0%CPEs: 10EXPL: 0CVE-2021-47061 – KVM: Destroy I/O bus devices on unregister failure _after_ sync'ing SRCU
https://notcve.org/view.php?id=CVE-2021-47061
In the Linux kernel, the following vulnerability has been resolved: KVM: Destroy I/O bus devices on unregister failure _after_ sync'ing SRCU If allocating a new instance of an I/O bus fails when unregistering a device, wait to destroy the device until after all readers are guaranteed to see the new null bus. Destroying devices before the bus is nullified could lead to use-after-free since readers expect the devices on their reference of the bus to remain valid. En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: KVM: Destruye los dispositivos del bus de E/S al cancelar el registro _después_ de sincronizar SRCU Si falla la asignación de una nueva instancia de un bus de E/S al cancelar el registro de un dispositivo, espere para destruir el dispositivo hasta que todos los lectores tengan la garantía de ver el nuevo bus nulo. Destruir dispositivos antes de que se anule el bus podría dar lugar a un uso posterior a la liberación, ya que los lectores esperan que los dispositivos en su referencia del bus sigan siendo válidos. • https://git.kernel.org/stable/c/f65886606c2d3b562716de030706dfe1bea4ed5e https://git.kernel.org/stable/c/f0dfffce3f4ffd5f822568a4a6fb34c010e939d1 https://git.kernel.org/stable/c/840e124f89a5127e7eb97ebf377f4b8ca745c070 https://git.kernel.org/stable/c/40a023f681befd9b2862a3c16fb306a38b359ae5 https://git.kernel.org/stable/c/19184bd06f488af62924ff1747614a8cb284ad63 https://git.kernel.org/stable/c/41b2ea7a6a11e2b1a7f2c29e1675a709a6b2b98d https://git.kernel.org/stable/c/68c125324b5e1d1d22805653735442923d896a1d https://git.kernel.org/stable/c/03c6cccedd3913006744faa252a4da514 •
CVSS: 6.0EPSS: 0%CPEs: 10EXPL: 0CVE-2021-47060 – KVM: Stop looking for coalesced MMIO zones if the bus is destroyed
https://notcve.org/view.php?id=CVE-2021-47060
In the Linux kernel, the following vulnerability has been resolved: KVM: Stop looking for coalesced MMIO zones if the bus is destroyed Abort the walk of coalesced MMIO zones if kvm_io_bus_unregister_dev() fails to allocate memory for the new instance of the bus. If it can't instantiate a new bus, unregister_dev() destroys all devices _except_ the target device. But, it doesn't tell the caller that it obliterated the bus and invoked the destructor for all devices that were on the bus. In the coalesced MMIO case, this can result in a deleted list entry dereference due to attempting to continue iterating on coalesced_zones after future entries (in the walk) have been deleted. Opportunistically add curly braces to the for-loop, which encompasses many lines but sneaks by without braces due to the guts being a single if statement. En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: KVM: deja de buscar zonas MMIO fusionadas si el bus se destruye. • https://git.kernel.org/stable/c/41b2ea7a6a11e2b1a7f2c29e1675a709a6b2b98d https://git.kernel.org/stable/c/f65886606c2d3b562716de030706dfe1bea4ed5e https://git.kernel.org/stable/c/f0dfffce3f4ffd5f822568a4a6fb34c010e939d1 https://git.kernel.org/stable/c/840e124f89a5127e7eb97ebf377f4b8ca745c070 https://git.kernel.org/stable/c/40a023f681befd9b2862a3c16fb306a38b359ae5 https://git.kernel.org/stable/c/19184bd06f488af62924ff1747614a8cb284ad63 https://git.kernel.org/stable/c/68c125324b5e1d1d22805653735442923d896a1d https://git.kernel.org/stable/c/7d1bc32d6477ff96a32695ea4be8144e4 •