Risk | High |
Patch available | YES |
Number of vulnerabilities | 21 |
CVE-ID | CVE-2021-3489 CVE-2021-3490 CVE-2021-3491 CVE-2020-25670 CVE-2020-25671 CVE-2020-25672 CVE-2021-28688 CVE-2021-28951 CVE-2021-28952 CVE-2021-28964 CVE-2021-28971 CVE-2021-28972 CVE-2021-29264 CVE-2021-29266 CVE-2021-29646 CVE-2021-29647 CVE-2021-29649 CVE-2021-29650 CVE-2021-29657 CVE-2021-31916 CVE-2021-3483 |
CWE-ID | CWE-125 CWE-787 CWE-416 CWE-401 CWE-665 CWE-667 CWE-119 CWE-362 CWE-400 CWE-20 CWE-200 |
Exploitation vector | Network |
Public exploit | Vulnerability #2 is being exploited in the wild. |
Vulnerable software |
Ubuntu Operating systems & Components / Operating system linux-image-oem-20.04b (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-5.10.0-1026-oem (Ubuntu package) Operating systems & Components / Operating system package or component |
Vendor | Canonical Ltd. |
Security Bulletin
This security bulletin contains information about 21 vulnerabilities.
EUVDB-ID: #VU90367
Risk: Low
CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2021-3489
CWE-ID:
CWE-125 - Out-of-bounds read
Exploit availability: No
DescriptionThe vulnerability allows a local user to execute arbitrary code.
The vulnerability exists due to an out-of-bounds read error within the __bpf_ringbuf_reserve() function in kernel/bpf/ringbuf.c. A local user can execute arbitrary code.
MitigationUpdate the affected package linux-oem-5.10 to the latest version.
Vulnerable software versionsUbuntu: 20.04
linux-image-oem-20.04b (Ubuntu package): before 5.10.0.1026.27
linux-image-5.10.0-1026-oem (Ubuntu package): before 5.10.0-1026.27
CPE2.3https://ubuntu.com/security/notices/USN-4948-1
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
EUVDB-ID: #VU55975
Risk: Low
CVSSv4.0: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Clear]
CVE-ID: CVE-2021-3490
CWE-ID:
CWE-787 - Out-of-bounds write
Exploit availability: Yes
Description The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error when processing untrusted input in bpf. The eBPF ALU32 bounds tracking for bitwise ops (AND, OR and XOR) in the
Linux kernel did not properly update 32-bit bounds, which could be
turned into out of bounds reads and writes in the Linux kernel and
therefore, arbitrary code execution. A local user can run a specially crafted program to trigger an out-of-bounds write and execute arbitrary code with elevated privileges.
Update the affected package linux-oem-5.10 to the latest version.
Vulnerable software versionsUbuntu: 20.04
linux-image-oem-20.04b (Ubuntu package): before 5.10.0.1026.27
linux-image-5.10.0-1026-oem (Ubuntu package): before 5.10.0-1026.27
CPE2.3https://ubuntu.com/security/notices/USN-4948-1
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
Yes. This vulnerability is being exploited in the wild.
EUVDB-ID: #VU68301
Risk: Low
CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2021-3491
CWE-ID:
CWE-787 - Out-of-bounds write
Exploit availability: No
Description The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to the io_uring subsystem in the Linux kernel allowed the MAX_RW_COUNT limit to be bypassed in the PROVIDE_BUFFERS
operation, which led to negative values being used in mem_rw when reading
/proc/<PID>/mem. A local user can trigger a heap overflow and execute arbitrary code with elevated privileges.
Update the affected package linux-oem-5.10 to the latest version.
Vulnerable software versionsUbuntu: 20.04
linux-image-oem-20.04b (Ubuntu package): before 5.10.0.1026.27
linux-image-5.10.0-1026-oem (Ubuntu package): before 5.10.0-1026.27
CPE2.3https://ubuntu.com/security/notices/USN-4948-1
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
EUVDB-ID: #VU63652
Risk: Low
CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2020-25670
CWE-ID:
CWE-416 - Use After Free
Exploit availability: No
DescriptionThe vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error in the NFC LLCP protocol implementation. A local user can perform manipulation with an unknown input for the llcp_sock_bind() function to crash or escalate their privileges on the system.
MitigationUpdate the affected package linux-oem-5.10 to the latest version.
Vulnerable software versionsUbuntu: 20.04
linux-image-oem-20.04b (Ubuntu package): before 5.10.0.1026.27
linux-image-5.10.0-1026-oem (Ubuntu package): before 5.10.0-1026.27
CPE2.3https://ubuntu.com/security/notices/USN-4948-1
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
EUVDB-ID: #VU63653
Risk: Low
CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2020-25671
CWE-ID:
CWE-416 - Use After Free
Exploit availability: No
DescriptionThe vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error in the NFC LLCP protocol implementation. A local user can trigger the llcp_sock_connect() function to crash or escalate their privileges on the system.
Update the affected package linux-oem-5.10 to the latest version.
Vulnerable software versionsUbuntu: 20.04
linux-image-oem-20.04b (Ubuntu package): before 5.10.0.1026.27
linux-image-5.10.0-1026-oem (Ubuntu package): before 5.10.0-1026.27
CPE2.3https://ubuntu.com/security/notices/USN-4948-1
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
EUVDB-ID: #VU63654
Risk: High
CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]
CVE-ID: CVE-2020-25672
CWE-ID:
CWE-401 - Missing release of memory after effective lifetime
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform DoS attack on the target system.
The vulnerability exists due memory leak in the NFC LLCP protocol implementation when triggering the llcp_sock_connect() function. A remote attacker can force the application to leak memory and perform denial of service attack.
MitigationUpdate the affected package linux-oem-5.10 to the latest version.
Vulnerable software versionsUbuntu: 20.04
linux-image-oem-20.04b (Ubuntu package): before 5.10.0.1026.27
linux-image-5.10.0-1026-oem (Ubuntu package): before 5.10.0-1026.27
CPE2.3https://ubuntu.com/security/notices/USN-4948-1
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
EUVDB-ID: #VU63658
Risk: Low
CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2021-28688
CWE-ID:
CWE-665 - Improper Initialization
Exploit availability: No
DescriptionThe vulnerability allows a local user to perform a denial of service attack.
The vulnerability exists due to improper initialization of pointers such that subsequent cleanup code wouldn't use uninitialized or stale values. A local user can perform a denial of service attack.
MitigationUpdate the affected package linux-oem-5.10 to the latest version.
Vulnerable software versionsUbuntu: 20.04
linux-image-oem-20.04b (Ubuntu package): before 5.10.0.1026.27
linux-image-5.10.0-1026-oem (Ubuntu package): before 5.10.0-1026.27
CPE2.3https://ubuntu.com/security/notices/USN-4948-1
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
EUVDB-ID: #VU90811
Risk: Low
CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2021-28951
CWE-ID:
CWE-667 - Improper Locking
Exploit availability: No
DescriptionThe vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the io_sq_offload_start(), io_disable_sqo_submit() and io_register_enable_rings() functions in fs/io_uring.c. A local user can perform a denial of service (DoS) attack.
MitigationUpdate the affected package linux-oem-5.10 to the latest version.
Vulnerable software versionsUbuntu: 20.04
linux-image-oem-20.04b (Ubuntu package): before 5.10.0.1026.27
linux-image-5.10.0-1026-oem (Ubuntu package): before 5.10.0-1026.27
CPE2.3https://ubuntu.com/security/notices/USN-4948-1
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
EUVDB-ID: #VU59694
Risk: Low
CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2021-28952
CWE-ID:
CWE-119 - Memory corruption
Exploit availability: No
DescriptionThe vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error in the sound/soc/qcom/sdm845.c soundwire device driver in Linux kernel. A local user can run a specially crafted program to trigger a buffer overflow, when an unexpected port ID number is encountered, and execute arbitrary code on the system with elevated privileges.
Update the affected package linux-oem-5.10 to the latest version.
Vulnerable software versionsUbuntu: 20.04
linux-image-oem-20.04b (Ubuntu package): before 5.10.0.1026.27
linux-image-5.10.0-1026-oem (Ubuntu package): before 5.10.0-1026.27
CPE2.3https://ubuntu.com/security/notices/USN-4948-1
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
EUVDB-ID: #VU63573
Risk: Low
CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2021-28964
Exploit availability: No
DescriptionThe vulnerability allows a local user to perform a denial of service attack.
The vulnerability exists due to a race condition in the get_old_root() function in fs/btrfs/ctree.c component in the Linux kernel. A local user can exploit the race and perform a denial of service attack.
MitigationUpdate the affected package linux-oem-5.10 to the latest version.
Vulnerable software versionsUbuntu: 20.04
linux-image-oem-20.04b (Ubuntu package): before 5.10.0.1026.27
linux-image-5.10.0-1026-oem (Ubuntu package): before 5.10.0-1026.27
CPE2.3https://ubuntu.com/security/notices/USN-4948-1
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
EUVDB-ID: #VU64830
Risk: Low
CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2021-28971
CWE-ID:
CWE-400 - Resource exhaustion
Exploit availability: No
DescriptionThe vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to mishandling of PEBS status in a PEBS record In intel_pmu_drain_pebs_nhm in arch/x86/events/intel/ds.c in the Linux kernel. A local user can trigger resource exhaustion and perform a denial of service (DoS) attack.
MitigationUpdate the affected package linux-oem-5.10 to the latest version.
Vulnerable software versionsUbuntu: 20.04
linux-image-oem-20.04b (Ubuntu package): before 5.10.0.1026.27
linux-image-5.10.0-1026-oem (Ubuntu package): before 5.10.0-1026.27
CPE2.3https://ubuntu.com/security/notices/USN-4948-1
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
EUVDB-ID: #VU56819
Risk: Low
CVSSv4.0: 5.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2021-28972
CWE-ID:
CWE-119 - Memory corruption
Exploit availability: No
DescriptionThe vulnerability allows a local user to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error in the drivers/pci/hotplug/rpadlpar_sysfs.c. A local administrator can trigger memory corruption and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
MitigationUpdate the affected package linux-oem-5.10 to the latest version.
Vulnerable software versionsUbuntu: 20.04
linux-image-oem-20.04b (Ubuntu package): before 5.10.0.1026.27
linux-image-5.10.0-1026-oem (Ubuntu package): before 5.10.0-1026.27
CPE2.3https://ubuntu.com/security/notices/USN-4948-1
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
EUVDB-ID: #VU93697
Risk: Low
CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2021-29264
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper input validation within the gfar_add_rx_frag() and gfar_clean_rx_ring() functions in drivers/net/ethernet/freescale/gianfar.c. A local user can perform a denial of service (DoS) attack.
MitigationUpdate the affected package linux-oem-5.10 to the latest version.
Vulnerable software versionsUbuntu: 20.04
linux-image-oem-20.04b (Ubuntu package): before 5.10.0.1026.27
linux-image-5.10.0-1026-oem (Ubuntu package): before 5.10.0-1026.27
CPE2.3https://ubuntu.com/security/notices/USN-4948-1
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
EUVDB-ID: #VU60357
Risk: Low
CVSSv4.0: 4.4 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2021-29266
CWE-ID:
CWE-416 - Use After Free
Exploit availability: No
DescriptionThe vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error in drivers/vhost/vdpa.c, because "v->config_ctx" has an invalid value upon re-opening a character device. A local user can trigger a use-after-free error and execute arbitrary code with elevated privileges.
Update the affected package linux-oem-5.10 to the latest version.
Vulnerable software versionsUbuntu: 20.04
linux-image-oem-20.04b (Ubuntu package): before 5.10.0.1026.27
linux-image-5.10.0-1026-oem (Ubuntu package): before 5.10.0-1026.27
CPE2.3https://ubuntu.com/security/notices/USN-4948-1
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
EUVDB-ID: #VU94153
Risk: Low
CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2021-29646
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper input validation within the tipc_nl_node_dump_monitor_peer() function in net/tipc/node.c. A local user can perform a denial of service (DoS) attack.
MitigationUpdate the affected package linux-oem-5.10 to the latest version.
Vulnerable software versionsUbuntu: 20.04
linux-image-oem-20.04b (Ubuntu package): before 5.10.0.1026.27
linux-image-5.10.0-1026-oem (Ubuntu package): before 5.10.0-1026.27
CPE2.3https://ubuntu.com/security/notices/USN-4948-1
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
EUVDB-ID: #VU57040
Risk: Low
CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2021-29647
CWE-ID:
CWE-200 - Information exposure
Exploit availability: No
DescriptionThe vulnerability allows a local user to gain access to potentially sensitive information.
The vulnerability exists due to an error in qrtr_recvmsg(0 function in net/qrtr/qrtr.c caused by a partially uninitialized data structure. A local user can read sensitive information from kernel memory.
Update the affected package linux-oem-5.10 to the latest version.
Vulnerable software versionsUbuntu: 20.04
linux-image-oem-20.04b (Ubuntu package): before 5.10.0.1026.27
linux-image-5.10.0-1026-oem (Ubuntu package): before 5.10.0-1026.27
CPE2.3https://ubuntu.com/security/notices/USN-4948-1
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
EUVDB-ID: #VU90487
Risk: Low
CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2021-29649
CWE-ID:
CWE-401 - Missing release of memory after effective lifetime
Exploit availability: No
DescriptionThe vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to memory leak within the umd_cleanup() function in kernel/usermode_driver.c, within the finish() and load_umd() functions in kernel/bpf/preload/bpf_preload_kern.c. A local user can perform a denial of service (DoS) attack.
MitigationUpdate the affected package linux-oem-5.10 to the latest version.
Vulnerable software versionsUbuntu: 20.04
linux-image-oem-20.04b (Ubuntu package): before 5.10.0.1026.27
linux-image-5.10.0-1026-oem (Ubuntu package): before 5.10.0-1026.27
CPE2.3https://ubuntu.com/security/notices/USN-4948-1
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
EUVDB-ID: #VU56240
Risk: Low
CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2021-29650
CWE-ID:
CWE-119 - Memory corruption
Exploit availability: No
DescriptionThe vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to a boundary error within the netfilter subsystem in net/netfilter/x_tables.c and include/linux/netfilter/x_tables.h. A local user can trigger memory corruption upon the assignment of a new table value and cause denial of service.
Update the affected package linux-oem-5.10 to the latest version.
Vulnerable software versionsUbuntu: 20.04
linux-image-oem-20.04b (Ubuntu package): before 5.10.0.1026.27
linux-image-5.10.0-1026-oem (Ubuntu package): before 5.10.0-1026.27
CPE2.3https://ubuntu.com/security/notices/USN-4948-1
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
EUVDB-ID: #VU65770
Risk: Medium
CVSSv4.0: 5.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2021-29657
CWE-ID:
CWE-416 - Use After Free
Exploit availability: No
DescriptionThe vulnerability allows a remote user to compromise vulnerable system.
The vulnerability exists due to a use-after-free error in arch/x86/kvm/svm/nested.c. An AMD KVM guest can bypass access control on host OS MSRs when there are nested guests and execute arbitrary code on the hypervisor.
Update the affected package linux-oem-5.10 to the latest version.
Vulnerable software versionsUbuntu: 20.04
linux-image-oem-20.04b (Ubuntu package): before 5.10.0.1026.27
linux-image-5.10.0-1026-oem (Ubuntu package): before 5.10.0-1026.27
CPE2.3https://ubuntu.com/security/notices/USN-4948-1
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
EUVDB-ID: #VU63574
Risk: Low
CVSSv4.0: 5.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2021-31916
CWE-ID:
CWE-787 - Out-of-bounds write
Exploit availability: No
DescriptionThe vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error in list_devices in drivers/md/dm-ioctl.c in the Multi-device driver module. A special user (CAP_SYS_ADMIN) can trigger a buffer overflow in the ioctl for listing devices and escalate privileges on the system.
MitigationUpdate the affected package linux-oem-5.10 to the latest version.
Vulnerable software versionsUbuntu: 20.04
linux-image-oem-20.04b (Ubuntu package): before 5.10.0.1026.27
linux-image-5.10.0-1026-oem (Ubuntu package): before 5.10.0-1026.27
CPE2.3https://ubuntu.com/security/notices/USN-4948-1
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
EUVDB-ID: #VU63659
Risk: Low
CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2021-3483
CWE-ID:
CWE-416 - Use After Free
Exploit availability: No
DescriptionThe vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error in the Nosy driver in the Linux kernel. A local user can trigger use-after-free and to escalate privileges on the system.
MitigationUpdate the affected package linux-oem-5.10 to the latest version.
Vulnerable software versionsUbuntu: 20.04
linux-image-oem-20.04b (Ubuntu package): before 5.10.0.1026.27
linux-image-5.10.0-1026-oem (Ubuntu package): before 5.10.0-1026.27
CPE2.3https://ubuntu.com/security/notices/USN-4948-1
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.