Red Hat Security Advisory: kernel security, bug fix, and enhancement update

Fixed packages 85

Vulnerabilities 5

• High 7.8
  CVE-2023-3090

  Out-of-bounds write in Linux kernel's ipvlan network driver

  A heap out-of-bounds write vulnerability in the Linux Kernel ipvlan network driver can be exploited to achieve local privilege escalation. The out-of-bounds write is caused by missing skb->cb initialization in the ipvlan network driver. The vulnerability is r…

  Linux kernel linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Jun 28, 2023
• High 7.8
  CVE-2023-35788 Public exploit

  An issue was discovered in fl_set_geneve_opt in net/sched/cls_flower.c in the Linux kernel before 6.3.7. It allows an o…

  linux-raspi2 linux-hwe linux-azure linux-riscv Debian Ubuntu Azure Linux
  Jun 16, 2023
• Medium 5.6
  CVE-2023-1998 Public exploit

  Spectre v2 SMT mitigations problem in Linux kernel

  The Linux kernel allows userspace processes to enable mitigations by calling prctl with PR_SET_SPECULATION_CTRL which disables the speculation feature as well as by using seccomp. We had noticed that on VMs of at least one major cloud provider, the kernel sti…

  Linux linux_kernel linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Apr 21, 2023
• Medium 5.5
  CVE-2022-45869

  A race condition in the x86 KVM subsystem in the Linux kernel through 6.1-rc6 allows guest OS users to cause a denial o…

  linux-raspi2 linux-hwe linux-azure linux-riscv Debian Ubuntu Azure Linux
  Nov 30, 2022
• Medium 5.3
  CVE-2023-0458

  Spectre V1 Gadget in do_prlimit in the Linux Kernel

  A speculative pointer dereference problem exists in the Linux Kernel on the do_prlimit() function. The resource argument value is controlled and is used in pointer arithmetic for the 'rlim' variable and can be used to leak the contents. We recommend upgrading…

  Linux linux_kernel linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Apr 26, 2023

References

• article
  https://access.redhat.com/security/updates/classification/#important
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2151317
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2187257
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2193219
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2215768
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2218672
• advisory
  https://security.access.redhat.com/data/csaf/v2/advisories/2023/rhsa-2023_4377.json
• report
  https://access.redhat.com/security/cve/CVE-2022-45869
• advisory
  https://www.cve.org/CVERecord?id=CVE-2022-45869
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2022-45869
• report
  https://access.redhat.com/security/cve/CVE-2023-0458
• advisory
  https://www.cve.org/CVERecord?id=CVE-2023-0458
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2023-0458
• article
  https://github.com/torvalds/linux/commit/739790605705ddcf18f21782b9c99ad7d53a8c11
• report
  https://access.redhat.com/security/cve/CVE-2023-1998
• advisory
  https://www.cve.org/CVERecord?id=CVE-2023-1998
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2023-1998
• article
  https://github.com/google/security-research/security/advisories/GHSA-mj4w-6495-6crx
• report
  https://access.redhat.com/security/cve/CVE-2023-3090
• advisory
  https://www.cve.org/CVERecord?id=CVE-2023-3090
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2023-3090
• report
  https://access.redhat.com/security/cve/CVE-2023-35788
• advisory
  https://www.cve.org/CVERecord?id=CVE-2023-35788
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2023-35788
• article
  https://www.openwall.com/lists/oss-security/2023/06/07/1