Export limit exceeded: 425863 CVEs match your query. Please refine your search to export 10,000 CVEs or fewer.

Search vulnerabilities

Use the Query Builder to create your own search query, or check out the documentation to learn the search syntax.

Results 3,250

Export CSV
CVE-2021-3750

QEMU: hcd-ehci: DMA reentrancy issue leads to use-after-free

A DMA reentrancy issue was found in the USB EHCI controller emulation of QEMU. EHCI does not verify if the Buffer Pointer overlaps with its MMIO region when it transfers the USB packets. Crafted content may be written to the controller's registers and trigger undesirable actions (such as reset) while the device is still transferring packets. This can ultimately lead to a use-after-free issue. A malicious guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service condition, or potentially execute arbitrary code within the context of the QEMU process on the host. This flaw affects QEMU versions before 7.0.0.

CVSS 3.1 · 8.2 High EPSS < 1% KEV · Not listed
Vendors
Qemu Redhat
Products
Qemu Enterprise Linux Rhel Eus
CVE-2021-3715

kernel: use-after-free in route4_change() in net/sched/cls_route.c

A flaw was found in the "Routing decision" classifier in the Linux kernel's Traffic Control networking subsystem in the way it handled changing of classification filters, leading to a use-after-free condition. This flaw allows unprivileged local users to escalate their privileges on the system. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
Vendors
Linux Redhat
Products
Linux Kernel Enterprise Linux Rhel E4s and 2 more
CVE-2021-3697

grub2: Crafted JPEG image can lead to buffer underflow write in the heap

A crafted JPEG image may lead the JPEG reader to underflow its data pointer, allowing user-controlled data to be written in heap. To a successful to be performed the attacker needs to perform some triage over the heap layout and craft an image with a malicious format and payload. This vulnerability can lead to data corruption and eventual code execution or secure boot circumvention. This flaw affects grub2 versions prior grub-2.12.

CVSS 3.1 · 7.0 High EPSS < 1% KEV · Not listed
Vendors
Gnu Redhat
Products
Grub2 Codeready Linux Builder Developer Tools and 11 more
CVE-2021-3696

grub2: Crafted PNG image may lead to out-of-bound write during huffman table handling

A heap out-of-bounds write may heppen during the handling of Huffman tables in the PNG reader. This may lead to data corruption in the heap space. Confidentiality, Integrity and Availablity impact may be considered Low as it's very complex to an attacker control the encoding and positioning of corrupted Huffman entries to achieve results such as arbitrary code execution and/or secure boot circumvention. This flaw affects grub2 versions prior grub-2.12.

CVSS 3.1 · 4.5 Medium EPSS < 1% KEV · Not listed
Vendors
Gnu Netapp Redhat
Products
Grub2 Ontap Select Deploy Administration Utility Codeready Linux Builder and 12 more
CVE-2021-3695

grub2: Crafted PNG grayscale images may lead to out-of-bounds write in heap

A crafted 16-bit grayscale PNG image may lead to a out-of-bounds write in the heap area. An attacker may take advantage of that to cause heap data corruption or eventually arbitrary code execution and circumvent secure boot protections. This issue has a high complexity to be exploited as an attacker needs to perform some triage over the heap layout to achieve signifcant results, also the values written into the memory are repeated three times in a row making difficult to produce valid payloads. This flaw affects grub2 versions prior grub-2.12.

CVSS 3.1 · 4.5 Medium EPSS < 1% KEV · Not listed
Vendors
Fedoraproject Gnu Netapp and 1 more
Products
Fedora Grub2 Ontap Select Deploy Administration Utility and 13 more
CVE-2021-3672

c-ares: Missing input validation of host names may lead to domain hijacking

A flaw was found in c-ares library, where a missing input validation check of host names returned by DNS (Domain Name Servers) can lead to output of wrong hostnames which might potentially lead to Domain Hijacking. The highest threat from this vulnerability is to confidentiality and integrity as well as system availability.

CVSS 3.1 · 5.6 Medium EPSS 2.8% KEV · Not listed
Vendors
C-ares Project Fedoraproject Nodejs and 3 more
Products
C-ares Fedora Node.js and 16 more
CVE-2021-3656

kernel: SVM nested virtualization issue in KVM (VMLOAD/VMSAVE)

A flaw was found in the KVM's AMD code for supporting SVM nested virtualization. The flaw occurs when processing the VMCB (virtual machine control block) provided by the L1 guest to spawn/handle a nested guest (L2). Due to improper validation of the "virt_ext" field, this issue could allow a malicious L1 to disable both VMLOAD/VMSAVE intercepts and VLS (Virtual VMLOAD/VMSAVE) for the L2 guest. As a result, the L2 guest would be allowed to read/write physical pages of the host, resulting in a crash of the entire system, leak of sensitive data or potential guest-to-host escape.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Vendors
Fedoraproject Linux Redhat
Products
Fedora Linux Kernel 3scale Api Management and 28 more
CVE-2021-3653

kernel: SVM nested virtualization issue in KVM (AVIC support)

A flaw was found in the KVM's AMD code for supporting SVM nested virtualization. The flaw occurs when processing the VMCB (virtual machine control block) provided by the L1 guest to spawn/handle a nested guest (L2). Due to improper validation of the "int_ctl" field, this issue could allow a malicious L1 to enable AVIC support (Advanced Virtual Interrupt Controller) for the L2 guest. As a result, the L2 guest would be allowed to read/write physical pages of the host, resulting in a crash of the entire system, leak of sensitive data or potential guest-to-host escape. This flaw affects Linux kernel versions prior to 5.14-rc7.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Vendors
Debian Linux Redhat
Products
Debian Linux Linux Kernel Enterprise Linux and 5 more
CVE-2021-3640

kernel: use-after-free vulnerability in function sco_sock_sendmsg()

A flaw use-after-free in function sco_sock_sendmsg() of the Linux kernel HCI subsystem was found in the way user calls ioct UFFDIO_REGISTER or other way triggers race condition of the call sco_conn_del() together with the call sco_sock_sendmsg() with the expected controllable faulting memory page. A privileged local user could use this flaw to crash the system or escalate their privileges on the system.

CVSS 3.1 · 7.0 High EPSS < 1% KEV · Not listed
Vendors
Canonical Debian Fedoraproject and 3 more
Products
Ubuntu Linux Debian Linux Fedora and 20 more
CVE-2021-3609

kernel: race condition in net/can/bcm.c leads to local privilege escalation

.A flaw was found in the CAN BCM networking protocol in the Linux kernel, where a local attacker can abuse a flaw in the CAN subsystem to corrupt memory, crash the system or escalate privileges. This race condition in net/can/bcm.c in the Linux kernel allows for local privilege escalation to root.

CVSS 3.1 · 7.0 High EPSS < 1% KEV · Not listed
Vendors
Linux Netapp Redhat
Products
Linux Kernel H300e H300e Firmware and 43 more
CVE-2021-3570

linuxptp: missing length check of forwarded messages

A flaw was found in the ptp4l program of the linuxptp package. A missing length check when forwarding a PTP message between ports allows a remote attacker to cause an information leak, crash, or potentially remote code execution. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability. This flaw affects linuxptp versions before 3.1.1, before 2.0.1, before 1.9.3, before 1.8.1, before 1.7.1, before 1.6.1 and before 1.5.1.

CVSS 3.1 · 8.8 High EPSS 3.0% KEV · Not listed
Vendors
Debian Fedoraproject Linuxptp Project and 1 more
Products
Debian Linux Fedora Linuxptp and 5 more
CVE-2021-3521

rpm: RPM does not require subkeys to have a valid binding signature

There is a flaw in RPM's signature functionality. OpenPGP subkeys are associated with a primary key via a "binding signature." RPM does not check the binding signature of subkeys prior to importing them. If an attacker is able to add or socially engineer another party to add a malicious subkey to a legitimate public key, RPM could wrongly trust a malicious signature. The greatest impact of this flaw is to data integrity. To exploit this flaw, an attacker must either compromise an RPM repository or convince an administrator to install an untrusted RPM or public key. It is strongly recommended to only use RPMs and public keys from trusted sources.

CVSS 3.1 · 4.7 Medium EPSS < 1% KEV · Not listed
Vendors
Redhat Rpm
Products
Enterprise Linux Rhel Eus Rpm
CVE-2021-3514

389-ds-base: sync_repl NULL pointer dereference in sync_create_state_control()

When using a sync_repl client in 389-ds-base, an authenticated attacker can cause a NULL pointer dereference using a specially crafted query, causing a crash.

CVSS 3.1 · 6.5 Medium EPSS 1.2% KEV · Not listed
Vendors
Redhat
Products
389 Directory Server Directory Server Enterprise Linux and 1 more
CVE-2021-3480

slapi-nis: NULL dereference (DoS) with specially crafted Binding DN

A flaw was found in slapi-nis in versions before 0.56.7. A NULL pointer dereference during the parsing of the Binding DN could allow an unauthenticated attacker to crash the 389-ds-base directory server. The highest threat from this vulnerability is to system availability.

CVSS 3.1 · 7.5 High EPSS 1.7% KEV · Not listed
Vendors
Fedoraproject Redhat Slapi-nis Project
Products
Fedora Enterprise Linux Rhel Eus and 1 more
CVE-2021-3421

rpm: unsigned signature header leads to string injection into an rpm database

A flaw was found in the RPM package in the read functionality. This flaw allows an attacker who can convince a victim to install a seemingly verifiable package or compromise an RPM repository, to cause RPM database corruption. The highest threat from this vulnerability is to data integrity. This flaw affects RPM versions before 4.17.0-alpha.

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
Vendors
Fedoraproject Redhat Rpm
Products
Fedora Enterprise Linux Rhel Eus and 1 more
CVE-2021-3393

postgresql: Partition constraint violation errors leak values of denied columns

An information leak was discovered in postgresql in versions before 13.2, before 12.6 and before 11.11. A user having UPDATE permission but not SELECT permission to a particular column could craft queries which, under some circumstances, might disclose values from that column in error messages. An attacker could use this flaw to obtain information stored in a column they are allowed to write but not read.

CVSS 3.1 · 4.3 Medium EPSS 1.2% KEV · Not listed
Vendors
Postgresql Redhat
Products
Postgresql Enterprise Linux Rhel Eus and 2 more
CVE-2021-38509

Mozilla: Javascript alert box could have been spoofed onto an arbitrary domain

Due to an unusual sequence of attacker-controlled events, a Javascript alert() dialog with arbitrary (although unstyled) contents could be displayed over top an uncontrolled webpage of the attacker's choosing. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3.

CVSS 3.1 · 4.3 Medium EPSS 1.8% KEV · Not listed
Vendors
Debian Mozilla Redhat
Products
Debian Linux Firefox Firefox Esr and 3 more
CVE-2021-38508

Mozilla: Permission Prompt could be overlaid, resulting in user confusion and potential spoofing

By displaying a form validity message in the correct location at the same time as a permission prompt (such as for geolocation), the validity message could have obscured the prompt, resulting in the user potentially being tricked into granting the permission. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3.

CVSS 3.1 · 4.3 Medium EPSS 1.6% KEV · Not listed
Vendors
Debian Mozilla Redhat
Products
Debian Linux Firefox Firefox Esr and 3 more