Debian Security Advisory

DSA-5161-1 linux -- security update

Date Reported:
11 Jun 2022
Affected Packages:
linux
Vulnerable:
Yes
Security database references:
In Mitre's CVE dictionary: CVE-2022-0494, CVE-2022-0854, CVE-2022-1012, CVE-2022-1729, CVE-2022-1786, CVE-2022-1789, CVE-2022-1852, CVE-2022-32250, CVE-2022-1972, CVE-2022-1974, CVE-2022-1975, CVE-2022-21499, CVE-2022-28893.
More information:

Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service or information leaks.

  • CVE-2022-0494

    The scsi_ioctl() was susceptible to an information leak only exploitable by users with CAP_SYS_ADMIN or CAP_SYS_RAWIO capabilities.

  • CVE-2022-0854

    Ali Haider discovered a potential information leak in the DMA subsystem. On systems where the swiotlb feature is needed, this might allow a local user to read sensitive information.

  • CVE-2022-1012

    The randomisation when calculating port offsets in the IP implementation was enhanced.

  • CVE-2022-1729

    Norbert Slusarek discovered a race condition in the perf subsystem which could result in local privilege escalation to root. The default settings in Debian prevent exploitation unless more permissive settings have been applied in the kernel.perf_event_paranoid sysctl.

  • CVE-2022-1786

    Kyle Zeng discovered a use-after-free in the io_uring subsystem which way result in local privilege escalation to root.

  • CVE-2022-1789 / CVE-2022-1852

    Yongkang Jia, Gaoning Pan and Qiuhao Li discovered two NULL pointer dereferences in KVM's CPU instruction handling, resulting in denial of service.

  • CVE-2022-32250

    Aaron Adams discovered a use-after-free in Netfilter which may result in local privilege escalation to root.

  • CVE-2022-1972

    Ziming Zhang discovered an out-of-bound write in Netfilter which may result in local privilege escalation to root.

  • CVE-2022-1974 / CVE-2022-1975

    Duoming Zhou discovered that the NFC netlink interface was suspectible to denial of service.

  • CVE-2022-21499

    It was discovered that the kernel debugger could be used to bypass UEFI Secure Boot restrictions.

  • CVE-2022-28893

    Felix Fu discovered a use-after-free in the implementation of the Remote Procedure Call (SunRPC) protocol, which could result in denial of service or an information leak.

For the stable distribution (bullseye), these problems have been fixed in version 5.10.120-1.

We recommend that you upgrade your linux packages.

For the detailed security status of linux please refer to its security tracker page at: https://security-tracker.debian.org/tracker/linux