Vulnerabilities (CVE)

Filtered by vendor Linux Subscribe
Filtered by product Linux Kernel
Total 7714 CVE
CVE Vendors Products Updated CVSS v2 CVSS v3
CVE-2021-29266 1 Linux 1 Linux Kernel 2024-11-21 7.2 HIGH 7.8 HIGH
An issue was discovered in the Linux kernel before 5.11.9. drivers/vhost/vdpa.c has a use-after-free because v->config_ctx has an invalid value upon re-opening a character device, aka CID-f6bbf0010ba0.
CVE-2021-29265 2 Debian, Linux 2 Debian Linux, Linux Kernel 2024-11-21 4.7 MEDIUM 4.7 MEDIUM
An issue was discovered in the Linux kernel before 5.11.7. usbip_sockfd_store in drivers/usb/usbip/stub_dev.c allows attackers to cause a denial of service (GPF) because the stub-up sequence has race conditions during an update of the local and shared status, aka CID-9380afd6df70.
CVE-2021-29264 2 Debian, Linux 2 Debian Linux, Linux Kernel 2024-11-21 4.7 MEDIUM 5.5 MEDIUM
An issue was discovered in the Linux kernel through 5.11.10. drivers/net/ethernet/freescale/gianfar.c in the Freescale Gianfar Ethernet driver allows attackers to cause a system crash because a negative fragment size is calculated in situations involving an rx queue overrun when jumbo packets are used and NAPI is enabled, aka CID-d8861bab48b6.
CVE-2021-29155 3 Debian, Fedoraproject, Linux 3 Debian Linux, Fedora, Linux Kernel 2024-11-21 2.1 LOW 5.5 MEDIUM
An issue was discovered in the Linux kernel through 5.11.x. kernel/bpf/verifier.c performs undesirable out-of-bounds speculation on pointer arithmetic, leading to side-channel attacks that defeat Spectre mitigations and obtain sensitive information from kernel memory. Specifically, for sequences of pointer arithmetic operations, the pointer modification performed by the first operation is not correctly accounted for when restricting subsequent operations.
CVE-2021-29154 4 Debian, Fedoraproject, Linux and 1 more 20 Debian Linux, Fedora, Linux Kernel and 17 more 2024-11-21 7.2 HIGH 7.8 HIGH
BPF JIT compilers in the Linux kernel through 5.11.12 have incorrect computation of branch displacements, allowing them to execute arbitrary code within the kernel context. This affects arch/x86/net/bpf_jit_comp.c and arch/x86/net/bpf_jit_comp32.c.
CVE-2021-28972 3 Fedoraproject, Linux, Netapp 5 Fedora, Linux Kernel, Cloud Backup and 2 more 2024-11-21 7.2 HIGH 6.7 MEDIUM
In drivers/pci/hotplug/rpadlpar_sysfs.c in the Linux kernel through 5.11.8, the RPA PCI Hotplug driver has a user-tolerable buffer overflow when writing a new device name to the driver from userspace, allowing userspace to write data to the kernel stack frame directly. This occurs because add_slot_store and remove_slot_store mishandle drc_name '\0' termination, aka CID-cc7a0bb058b8.
CVE-2021-28971 4 Debian, Fedoraproject, Linux and 1 more 9 Debian Linux, Fedora, Linux Kernel and 6 more 2024-11-21 4.9 MEDIUM 5.5 MEDIUM
In intel_pmu_drain_pebs_nhm in arch/x86/events/intel/ds.c in the Linux kernel through 5.11.8 on some Haswell CPUs, userspace applications (such as perf-fuzzer) can cause a system crash because the PEBS status in a PEBS record is mishandled, aka CID-d88d05a9e0b6.
CVE-2021-28964 4 Debian, Fedoraproject, Linux and 1 more 9 Debian Linux, Fedora, Linux Kernel and 6 more 2024-11-21 1.9 LOW 4.7 MEDIUM
A race condition was discovered in get_old_root in fs/btrfs/ctree.c in the Linux kernel through 5.11.8. It allows attackers to cause a denial of service (BUG) because of a lack of locking on an extent buffer before a cloning operation, aka CID-dbcc7d57bffc.
CVE-2021-28952 3 Fedoraproject, Linux, Netapp 11 Fedora, Linux Kernel, A250 and 8 more 2024-11-21 4.6 MEDIUM 7.8 HIGH
An issue was discovered in the Linux kernel through 5.11.8. The sound/soc/qcom/sdm845.c soundwire device driver has a buffer overflow when an unexpected port ID number is encountered, aka CID-1c668e1c0a0f. (This has been fixed in 5.12-rc4.)
CVE-2021-28951 3 Fedoraproject, Linux, Netapp 11 Fedora, Linux Kernel, A250 and 8 more 2024-11-21 4.9 MEDIUM 5.5 MEDIUM
An issue was discovered in fs/io_uring.c in the Linux kernel through 5.11.8. It allows attackers to cause a denial of service (deadlock) because exit may be waiting to park a SQPOLL thread, but concurrently that SQPOLL thread is waiting for a signal to start, aka CID-3ebba796fa25.
CVE-2021-28950 3 Debian, Fedoraproject, Linux 3 Debian Linux, Fedora, Linux Kernel 2024-11-21 2.1 LOW 5.5 MEDIUM
An issue was discovered in fs/fuse/fuse_i.h in the Linux kernel before 5.11.8. A "stall on CPU" can occur because a retry loop continually finds the same bad inode, aka CID-775c5033a0d1.
CVE-2021-28715 2 Debian, Linux 2 Debian Linux, Linux Kernel 2024-11-21 2.1 LOW 6.5 MEDIUM
Guest can force Linux netback driver to hog large amounts of kernel memory T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] Incoming data packets for a guest in the Linux kernel's netback driver are buffered until the guest is ready to process them. There are some measures taken for avoiding to pile up too much data, but those can be bypassed by the guest: There is a timeout how long the client side of an interface can stop consuming new packets before it is assumed to have stalled, but this timeout is rather long (60 seconds by default). Using a UDP connection on a fast interface can easily accumulate gigabytes of data in that time. (CVE-2021-28715) The timeout could even never trigger if the guest manages to have only one free slot in its RX queue ring page and the next package would require more than one free slot, which may be the case when using GSO, XDP, or software hashing. (CVE-2021-28714)
CVE-2021-28714 2 Debian, Linux 2 Debian Linux, Linux Kernel 2024-11-21 2.1 LOW 6.5 MEDIUM
Guest can force Linux netback driver to hog large amounts of kernel memory T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] Incoming data packets for a guest in the Linux kernel's netback driver are buffered until the guest is ready to process them. There are some measures taken for avoiding to pile up too much data, but those can be bypassed by the guest: There is a timeout how long the client side of an interface can stop consuming new packets before it is assumed to have stalled, but this timeout is rather long (60 seconds by default). Using a UDP connection on a fast interface can easily accumulate gigabytes of data in that time. (CVE-2021-28715) The timeout could even never trigger if the guest manages to have only one free slot in its RX queue ring page and the next package would require more than one free slot, which may be the case when using GSO, XDP, or software hashing. (CVE-2021-28714)
CVE-2021-28691 2 Linux, Netapp 18 Linux Kernel, Cloud Backup, H300e and 15 more 2024-11-21 4.6 MEDIUM 7.8 HIGH
Guest triggered use-after-free in Linux xen-netback A malicious or buggy network PV frontend can force Linux netback to disable the interface and terminate the receive kernel thread associated with queue 0 in response to the frontend sending a malformed packet. Such kernel thread termination will lead to a use-after-free in Linux netback when the backend is destroyed, as the kernel thread associated with queue 0 will have already exited and thus the call to kthread_stop will be performed against a stale pointer.
CVE-2021-28688 2 Debian, Linux 2 Debian Linux, Linux Kernel 2024-11-21 2.1 LOW 6.5 MEDIUM
The fix for XSA-365 includes initialization of pointers such that subsequent cleanup code wouldn't use uninitialized or stale values. This initialization went too far and may under certain conditions also overwrite pointers which are in need of cleaning up. The lack of cleanup would result in leaking persistent grants. The leak in turn would prevent fully cleaning up after a respective guest has died, leaving around zombie domains. All Linux versions having the fix for XSA-365 applied are vulnerable. XSA-365 was classified to affect versions back to at least 3.11.
CVE-2021-28660 4 Debian, Fedoraproject, Linux and 1 more 20 Debian Linux, Fedora, Linux Kernel and 17 more 2024-11-21 8.3 HIGH 8.8 HIGH
rtw_wx_set_scan in drivers/staging/rtl8188eu/os_dep/ioctl_linux.c in the Linux kernel through 5.11.6 allows writing beyond the end of the ->ssid[] array. NOTE: from the perspective of kernel.org releases, CVE IDs are not normally used for drivers/staging/* (unfinished work); however, system integrators may have situations in which a drivers/staging issue is relevant to their own customer base.
CVE-2021-28375 3 Fedoraproject, Linux, Netapp 4 Fedora, Linux Kernel, Cloud Backup and 1 more 2024-11-21 7.2 HIGH 7.8 HIGH
An issue was discovered in the Linux kernel through 5.11.6. fastrpc_internal_invoke in drivers/misc/fastrpc.c does not prevent user applications from sending kernel RPC messages, aka CID-20c40794eb85. This is a related issue to CVE-2019-2308.
CVE-2021-28039 3 Linux, Netapp, Xen 4 Linux Kernel, Cloud Backup, Solidfire Baseboard Management Controller Firmware and 1 more 2024-11-21 2.1 LOW 6.5 MEDIUM
An issue was discovered in the Linux kernel 5.9.x through 5.11.3, as used with Xen. In some less-common configurations, an x86 PV guest OS user can crash a Dom0 or driver domain via a large amount of I/O activity. The issue relates to misuse of guest physical addresses when a configuration has CONFIG_XEN_UNPOPULATED_ALLOC but not CONFIG_XEN_BALLOON_MEMORY_HOTPLUG.
CVE-2021-28038 3 Debian, Linux, Netapp 4 Debian Linux, Linux Kernel, Cloud Backup and 1 more 2024-11-21 4.9 MEDIUM 6.5 MEDIUM
An issue was discovered in the Linux kernel through 5.11.3, as used with Xen PV. A certain part of the netback driver lacks necessary treatment of errors such as failed memory allocations (as a result of changes to the handling of grant mapping errors). A host OS denial of service may occur during misbehavior of a networking frontend driver. NOTE: this issue exists because of an incomplete fix for CVE-2021-26931.
CVE-2021-27365 4 Debian, Linux, Netapp and 1 more 5 Debian Linux, Linux Kernel, Solidfire Baseboard Management Controller and 2 more 2024-11-21 4.6 MEDIUM 7.8 HIGH
An issue was discovered in the Linux kernel through 5.11.3. Certain iSCSI data structures do not have appropriate length constraints or checks, and can exceed the PAGE_SIZE value. An unprivileged user can send a Netlink message that is associated with iSCSI, and has a length up to the maximum length of a Netlink message.