Red Hat Security Advisory: kernel-rt security update

Fixed packages 28

Vulnerabilities 11

• Critical 10.0
  CVE-2023-2163 Public exploit

  Incorrect Verifier Branch Pruning Logic Leads To Arbitrary Read/Write In Linux Kernel and Lateral Privilege Escalation

  Incorrect verifier pruning in BPF in Linux Kernel >=5.4 leads to unsafe code paths being incorrectly marked as safe, resulting in arbitrary read/write in kernel memory, lateral privilege escalation, and container escape.

  Linux linux_kernel linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Sep 20, 2023
• High 7.8
  CVE-2023-3812

  Kernel: tun: bugs for oversize packet when napi frags enabled in tun_napi_alloc_frags

  An out-of-bounds memory access flaw was found in the Linux kernel’s TUN/TAP device driver functionality in how a user generates a malicious (too big) networking packet when napi frags is enabled. This flaw allows a local user to crash or potentially escalate …

  Red Hat Red Hat Enterprise Linux 9 Red Hat Enterprise Linux 8 Red Hat Enterprise Linux 7 Linux Debian Ubuntu Azure Linux
  Jul 24, 2023
• High 7.8
  CVE-2023-4622 Public exploit

  Use-after-free in Linux kernel's af_unix component

  A use-after-free vulnerability in the Linux kernel's af_unix component can be exploited to achieve local privilege escalation. The unix_stream_sendpage() function tries to add data to the last skb in the peer's recv queue without locking the queue. Thus there…

  Linux kernel linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Sep 6, 2023
• High 7.8
  CVE-2023-4623

  Use-after-free in Linux kernel's net/sched: sch_hfsc (HFSC qdisc traffic control) component

  A use-after-free vulnerability in the Linux kernel's net/sched: sch_hfsc (HFSC qdisc traffic control) component can be exploited to achieve local privilege escalation. If a class with a link-sharing curve (i.e. with the HFSC_FSC flag set) has a parent without…

  Linux kernel linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Sep 6, 2023
• High 7.8
  CVE-2023-4921

  Use-after-free in Linux kernel's net/sched: sch_qfq component

  A use-after-free vulnerability in the Linux kernel's net/sched: sch_qfq component can be exploited to achieve local privilege escalation. When the plug qdisc is used as a class of the qfq qdisc, sending network packets triggers use-after-free in qfq_dequeue()…

  Linux kernel linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Sep 12, 2023
• High 7.0
  CVE-2023-42753

  Kernel: netfilter: potential slab-out-of-bound access due to integer underflow

  An array indexing vulnerability was found in the netfilter subsystem of the Linux kernel. A missing macro could lead to a miscalculation of the `h->nets` array offset, providing attackers with the primitive to arbitrarily increment/decrement a memory buffer o…

  Red Hat Red Hat Enterprise Linux 9 Red Hat Enterprise Linux 8 Red Hat Enterprise Linux 7 Linux Debian Ubuntu Azure Linux
  Sep 25, 2023
• Medium 6.5
  CVE-2022-40982

  Information exposure through microarchitectural state after transient execution in certain vector execution units for s…

  linux-raspi2 linux-hwe linux-azure linux-riscv Debian Ubuntu Alpine
  Aug 11, 2023
• Medium 6.5
  CVE-2023-1192

  Use-after-free in smb2_is_status_io_timeout()

  A use-after-free flaw was found in smb2_is_status_io_timeout() in CIFS in the Linux Kernel. After CIFS transfers response data to a system call, there are still local variable points to the memory region, and if the system call frees it faster than CIFS uses …

  Red Hat Fedora Red Hat Enterprise Linux 9 Red Hat Enterprise Linux 8 Linux Debian Ubuntu Azure Linux
  Nov 1, 2023
• Medium 5.5
  CVE-2023-2162

  A use-after-free vulnerability was found in iscsi_sw_tcp_session_create in drivers/scsi/iscsi_tcp.c in SCSI sub-compone…

  linux-raspi2 linux-hwe linux-azure linux-riscv Debian Ubuntu Azure Linux
  Apr 19, 2023
• Unscored —
  CVE-2023-38409

  An issue was discovered in set_con2fb_map in drivers/video/fbdev/core/fbcon.c in the Linux kernel before 6.2.12. Becaus…

  linux-raspi2 linux-hwe linux-azure linux-riscv Debian Ubuntu Azure Linux
  Jul 17, 2023
• Unscored —
  CVE-2023-45871

  An issue was discovered in drivers/net/ethernet/intel/igb/igb_main.c in the IGB driver in the Linux kernel before 6.5.3…

  linux-raspi2 linux-hwe linux-azure linux-riscv Debian Ubuntu Azure Linux
  Oct 15, 2023

References

• article
  https://access.redhat.com/security/updates/classification/#important
• article
  https://access.redhat.com/solutions/7027704
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2154178
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2187773
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2223949
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2224048
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2230042
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2237757
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2237760
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2239843
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2240249
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2244723
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2245514
• advisory
  https://security.access.redhat.com/data/csaf/v2/advisories/2024/rhsa-2024_0563.json
• report
  https://access.redhat.com/security/cve/CVE-2022-40982
• advisory
  https://www.cve.org/CVERecord?id=CVE-2022-40982
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2022-40982
• article
  https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00828.html
• report
  https://access.redhat.com/security/cve/CVE-2023-1192
• advisory
  https://www.cve.org/CVERecord?id=CVE-2023-1192
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2023-1192
• article
  https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d527f51331cace562393a8038d870b3e9916686fCVE-2023-52
• report
  https://access.redhat.com/security/cve/CVE-2023-2162
• advisory
  https://www.cve.org/CVERecord?id=CVE-2023-2162
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2023-2162
• article
  https://www.spinics.net/lists/linux-scsi/msg181542.html
• report
  https://access.redhat.com/security/cve/CVE-2023-2163
• advisory
  https://www.cve.org/CVERecord?id=CVE-2023-2163
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2023-2163
• article
  https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=71b547f561247897a0a14f3082730156c0533fed
• report
  https://access.redhat.com/security/cve/CVE-2023-3812
• advisory
  https://www.cve.org/CVERecord?id=CVE-2023-3812
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2023-3812
• article
  https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=363a5328f4b0
• report
  https://access.redhat.com/security/cve/CVE-2023-4622
• advisory
  https://www.cve.org/CVERecord?id=CVE-2023-4622
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2023-4622
• article
  https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-6.1.y&id=790c2f9d15b594350ae9bca7b236f2b1859de02c
• report
  https://access.redhat.com/security/cve/CVE-2023-4623