Filtered by vendor Linux
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Filtered by product Linux Kernel
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Total
6949 CVE
| CVE | Vendors | Products | Updated | CVSS v3.1 |
|---|---|---|---|---|
| CVE-2021-46921 | 1 Linux | 1 Linux Kernel | 2024-08-04 | 5.5 Medium |
| In the Linux kernel, the following vulnerability has been resolved: locking/qrwlock: Fix ordering in queued_write_lock_slowpath() While this code is executed with the wait_lock held, a reader can acquire the lock without holding wait_lock. The writer side loops checking the value with the atomic_cond_read_acquire(), but only truly acquires the lock when the compare-and-exchange is completed successfully which isn’t ordered. This exposes the window between the acquire and the cmpxchg to an A-B-A problem which allows reads following the lock acquisition to observe values speculatively before the write lock is truly acquired. We've seen a problem in epoll where the reader does a xchg while holding the read lock, but the writer can see a value change out from under it. Writer | Reader -------------------------------------------------------------------------------- ep_scan_ready_list() | |- write_lock_irq() | |- queued_write_lock_slowpath() | |- atomic_cond_read_acquire() | | read_lock_irqsave(&ep->lock, flags); --> (observes value before unlock) | chain_epi_lockless() | | epi->next = xchg(&ep->ovflist, epi); | | read_unlock_irqrestore(&ep->lock, flags); | | | atomic_cmpxchg_relaxed() | |-- READ_ONCE(ep->ovflist); | A core can order the read of the ovflist ahead of the atomic_cmpxchg_relaxed(). Switching the cmpxchg to use acquire semantics addresses this issue at which point the atomic_cond_read can be switched to use relaxed semantics. [peterz: use try_cmpxchg()] | ||||
| CVE-2021-46904 | 1 Linux | 1 Linux Kernel | 2024-08-04 | 5.5 Medium |
| In the Linux kernel, the following vulnerability has been resolved: net: hso: fix null-ptr-deref during tty device unregistration Multiple ttys try to claim the same the minor number causing a double unregistration of the same device. The first unregistration succeeds but the next one results in a null-ptr-deref. The get_free_serial_index() function returns an available minor number but doesn't assign it immediately. The assignment is done by the caller later. But before this assignment, calls to get_free_serial_index() would return the same minor number. Fix this by modifying get_free_serial_index to assign the minor number immediately after one is found to be and rename it to obtain_minor() to better reflect what it does. Similary, rename set_serial_by_index() to release_minor() and modify it to free up the minor number of the given hso_serial. Every obtain_minor() should have corresponding release_minor() call. | ||||
| CVE-2021-46283 | 1 Linux | 1 Linux Kernel | 2024-08-04 | 5.5 Medium |
| nf_tables_newset in net/netfilter/nf_tables_api.c in the Linux kernel before 5.12.13 allows local users to cause a denial of service (NULL pointer dereference and general protection fault) because of the missing initialization for nft_set_elem_expr_alloc. A local user can set a netfilter table expression in their own namespace. | ||||
| CVE-2021-45884 | 4 Apple, Brave, Linux and 1 more | 4 Macos, Brave, Linux Kernel and 1 more | 2024-08-04 | 7.5 High |
| In Brave Desktop 1.17 through 1.33 before 1.33.106, when CNAME-based adblocking and a proxying extension with a SOCKS fallback are enabled, additional DNS requests are issued outside of the proxying extension using the system's DNS settings, resulting in information disclosure. NOTE: this issue exists because of an incomplete fix for CVE-2021-21323 and CVE-2021-22916. | ||||
| CVE-2021-45868 | 2 Linux, Netapp | 17 Linux Kernel, H300e, H300e Firmware and 14 more | 2024-08-04 | 5.5 Medium |
| In the Linux kernel before 5.15.3, fs/quota/quota_tree.c does not validate the block number in the quota tree (on disk). This can, for example, lead to a kernel/locking/rwsem.c use-after-free if there is a corrupted quota file. | ||||
| CVE-2021-45486 | 3 Linux, Oracle, Redhat | 6 Linux Kernel, Communications Cloud Native Core Binding Support Function, Communications Cloud Native Core Network Exposure Function and 3 more | 2024-08-04 | 3.5 Low |
| In the IPv4 implementation in the Linux kernel before 5.12.4, net/ipv4/route.c has an information leak because the hash table is very small. | ||||
| CVE-2021-45469 | 4 Debian, Fedoraproject, Linux and 1 more | 19 Debian Linux, Fedora, Linux Kernel and 16 more | 2024-08-04 | 7.8 High |
| In __f2fs_setxattr in fs/f2fs/xattr.c in the Linux kernel through 5.15.11, there is an out-of-bounds memory access when an inode has an invalid last xattr entry. | ||||
| CVE-2021-45485 | 4 Linux, Netapp, Oracle and 1 more | 46 Linux Kernel, Aff A400, Aff A400 Firmware and 43 more | 2024-08-04 | 7.5 High |
| In the IPv6 implementation in the Linux kernel before 5.13.3, net/ipv6/output_core.c has an information leak because of certain use of a hash table which, although big, doesn't properly consider that IPv6-based attackers can typically choose among many IPv6 source addresses. | ||||
| CVE-2021-45480 | 2 Debian, Linux | 2 Debian Linux, Linux Kernel | 2024-08-04 | 5.5 Medium |
| An issue was discovered in the Linux kernel before 5.15.11. There is a memory leak in the __rds_conn_create() function in net/rds/connection.c in a certain combination of circumstances. | ||||
| CVE-2021-45402 | 1 Linux | 1 Linux Kernel | 2024-08-04 | 5.5 Medium |
| The check_alu_op() function in kernel/bpf/verifier.c in the Linux kernel through v5.16-rc5 did not properly update bounds while handling the mov32 instruction, which allows local users to obtain potentially sensitive address information, aka a "pointer leak." | ||||
| CVE-2021-45095 | 2 Debian, Linux | 2 Debian Linux, Linux Kernel | 2024-08-04 | 5.5 Medium |
| pep_sock_accept in net/phonet/pep.c in the Linux kernel through 5.15.8 has a refcount leak. | ||||
| CVE-2021-45100 | 3 Ksmbd Project, Linux, Netapp | 18 Ksmbd, Linux Kernel, H300e and 15 more | 2024-08-04 | 7.5 High |
| The ksmbd server through 3.4.2, as used in the Linux kernel through 5.15.8, sometimes communicates in cleartext even though encryption has been enabled. This occurs because it sets the SMB2_GLOBAL_CAP_ENCRYPTION flag when using the SMB 3.1.1 protocol, which is a violation of the SMB protocol specification. When Windows 10 detects this protocol violation, it disables encryption. | ||||
| CVE-2021-44879 | 1 Linux | 1 Linux Kernel | 2024-08-04 | 5.5 Medium |
| In gc_data_segment in fs/f2fs/gc.c in the Linux kernel before 5.16.3, special files are not considered, leading to a move_data_page NULL pointer dereference. | ||||
| CVE-2021-44733 | 5 Debian, Fedoraproject, Linux and 2 more | 20 Debian Linux, Fedora, Linux Kernel and 17 more | 2024-08-04 | 7.0 High |
| A use-after-free exists in drivers/tee/tee_shm.c in the TEE subsystem in the Linux kernel through 5.15.11. This occurs because of a race condition in tee_shm_get_from_id during an attempt to free a shared memory object. | ||||
| CVE-2021-44458 | 2 Linux, Mirantis | 2 Linux Kernel, Lens | 2024-08-04 | 8.3 High |
| Linux users running Lens 5.2.6 and earlier could be compromised by visiting a malicious website. The malicious website could make websocket connections from the victim's browser to Lens and so operate the local terminal feature. This would allow the attacker to execute arbitrary commands as the Lens user. | ||||
| CVE-2021-43976 | 6 Debian, Fedoraproject, Linux and 3 more | 24 Debian Linux, Fedora, Linux Kernel and 21 more | 2024-08-04 | 4.6 Medium |
| In the Linux kernel through 5.15.2, mwifiex_usb_recv in drivers/net/wireless/marvell/mwifiex/usb.c allows an attacker (who can connect a crafted USB device) to cause a denial of service (skb_over_panic). | ||||
| CVE-2021-43975 | 5 Debian, Fedoraproject, Linux and 2 more | 21 Debian Linux, Fedora, Linux Kernel and 18 more | 2024-08-04 | 6.7 Medium |
| In the Linux kernel through 5.15.2, hw_atl_utils_fw_rpc_wait in drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_utils.c allows an attacker (who can introduce a crafted device) to trigger an out-of-bounds write via a crafted length value. | ||||
| CVE-2021-43389 | 4 Debian, Linux, Oracle and 1 more | 6 Debian Linux, Linux Kernel, Communications Cloud Native Core Binding Support Function and 3 more | 2024-08-04 | 5.5 Medium |
| An issue was discovered in the Linux kernel before 5.14.15. There is an array-index-out-of-bounds flaw in the detach_capi_ctr function in drivers/isdn/capi/kcapi.c. | ||||
| CVE-2021-43267 | 4 Fedoraproject, Linux, Netapp and 1 more | 19 Fedora, Linux Kernel, H300e and 16 more | 2024-08-04 | 9.8 Critical |
| An issue was discovered in net/tipc/crypto.c in the Linux kernel before 5.14.16. The Transparent Inter-Process Communication (TIPC) functionality allows remote attackers to exploit insufficient validation of user-supplied sizes for the MSG_CRYPTO message type. | ||||
| CVE-2021-43056 | 3 Fedoraproject, Linux, Redhat | 3 Fedora, Linux Kernel, Enterprise Linux | 2024-08-04 | 5.5 Medium |
| An issue was discovered in the Linux kernel for powerpc before 5.14.15. It allows a malicious KVM guest to crash the host, when the host is running on Power8, due to an arch/powerpc/kvm/book3s_hv_rmhandlers.S implementation bug in the handling of the SRR1 register values. | ||||