SB2022051182 - openEuler update for kernel
Published: May 11, 2022
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 15 secuirty vulnerabilities.
1) NULL pointer dereference (CVE-ID: CVE-2022-1205)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to a null pointer dereference and use after free errors in the net/ax25/ax25_timer.c. A local user can simulate Amateur Radio and perform a denial of service (DoS) attack.
2) NULL pointer dereference (CVE-ID: CVE-2022-1199)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to a Null pointer dereference and use after free errors in the ax25_release() function. A local user can simulate Amateur Radio and perform a denial of service (DoS) attack.
3) Information disclosure (CVE-ID: CVE-2022-1353)
The vulnerability allows a local user to gain access to potentially sensitive information.
The vulnerability exists due to excessive data output by the application in the pfkey_register function in net/key/af_key.c in the Linux kernel. A local user can gain unauthorized access to kernel memory, leading to a system crash or a leak of internal kernel information.
4) Processor optimization removal or modification of security-critical code (CVE-ID: CVE-2022-23960)
The vulnerability allows a local user to obtain potentially sensitive information.
The vulnerability exists due to improper restrictions of cache speculation. A local user can leverage the shared branch history in the Branch History Buffer (BHB) to influence mispredicted branches and gain access to sensitive information.
The vulnerability was dubbed Spectre-BHB.
5) Double Free (CVE-ID: CVE-2022-29156)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error in drivers/infiniband/ulp/rtrs/rtrs-clt.c in the Linux kernel. A remote attacker can pass specially crafted data to the application, trigger double free error and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
6) Out-of-bounds write (CVE-ID: CVE-2022-0500)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error in unrestricted eBPF usage by the BPF_BTF_LOAD in Linux kernel. A local user can trigger an out-of-bounds write error in BPF subsystem and execute arbitrary code with elevated privileges.
7) Race condition (CVE-ID: CVE-2022-23036)
The vulnerability allows a local user to bypass implemented security restrictions.
The vulnerability exists due to a race condition in the blkfront ring buffer. A malicious backend can exploit the race condition and read or write data or perform a denial of service attack.
8) Race condition (CVE-ID: CVE-2021-39686)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a race condition in the binder implementation in Linux kernel. A local user can exploit the race and gain unauthorized access to sensitive information and escalate privileges on the system.
9) Information disclosure (CVE-ID: CVE-2022-0001)
The vulnerability allows a local user to gain access to potentially sensitive information.
The vulnerability exists due to non-transparent sharing of branch predictor selectors between contexts. A local user can gain unauthorized access to sensitive information on the system.
10) Race condition (CVE-ID: CVE-2022-23038)
The vulnerability allows a local user to bypass implemented security restrictions.
The vulnerability exists due to a race condition in the scsifront ring buffer. A malicious backend can exploit the race condition and read or write data or perform a denial of service attack.
11) Race condition (CVE-ID: CVE-2022-23037)
The vulnerability allows a local user to bypass implemented security restrictions.
The vulnerability exists due to a race condition in the netfront ring buffer. A malicious backend can exploit the race condition and read or write data or perform a denial of service attack.
12) Race condition (CVE-ID: CVE-2022-23039)
The vulnerability allows a local user to bypass implemented security restrictions.
The vulnerability exists due to a race condition in the gntalloc ring buffer. A malicious backend can exploit the race condition and read or write data or perform a denial of service attack.
13) Race condition (CVE-ID: CVE-2022-23040)
The vulnerability allows a local user to bypass implemented security restrictions.
The vulnerability exists due to a race condition in the xenbus ring buffer. A malicious backend can exploit the race condition and read or write data or perform a denial of service attack.
14) Race condition (CVE-ID: CVE-2022-23041)
The vulnerability allows a local user to bypass implemented security restrictions.
The vulnerability exists due to a race condition in blkfront, netfront, scsifront, usbfront, dmabuf, xenbus, 9p, kbdfront, and pvcalls ring buffers. A malicious backend can exploit the race condition and read or write data or perform a denial of service attack.
15) Reachable Assertion (CVE-ID: CVE-2022-23042)
The vulnerability allows a local user to bypass implemented security restrictions.
The vulnerability exists due to reachable assertion in the netfront ring buffer. A malicious backend can exploit the race condition and read or write data or perform a denial of service attack.
Remediation
Install update from vendor's website.