Red Hat Security Advisory: kernel security and bug fix update

Fixed packages 81

Vulnerabilities 4

• High 8.8
  CVE-2023-5178 Public exploit

  Kernel: use after free in nvmet_tcp_free_crypto in nvme

  A use-after-free vulnerability was found in drivers/nvme/target/tcp.c` in `nvmet_tcp_free_crypto` due to a logical bug in the NVMe/TCP subsystem in the Linux kernel. This issue may allow a malicious user to cause a use-after-free and double-free problem, whic…

  Red Hat Red Hat Enterprise Linux 9 Red Hat Enterprise Linux 8 Red Hat Enterprise Linux 7 Linux Debian Ubuntu Azure Linux
  Nov 1, 2023
• Unscored —
  CVE-2022-50679

  i40e: Fix DMA mappings leak

  In the Linux kernel, the following vulnerability has been resolved: i40e: Fix DMA mappings leak During reallocation of RX buffers, new DMA mappings are created for those buffers. steps for reproduction: while : do for ((i=0; i<=8160; i=i+32)) do ethtool -G en…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  Dec 9, 2025
• Unscored —
  CVE-2023-20593 Public exploit

  An issue in “Zen 2” CPUs, under specific microarchitectural circumstances, may allow an attacker to potentially access …

  AMD 2nd Gen AMD EPYC™ Processors Ryzen™ 5000 Series Mobile Processors with Radeon™ Graphics “Lucienne” 3rd Gen AMD Ryzen™ Threadripper™ Processors “Castle Peak” HEDT Debian Ubuntu Alpine
  Jul 24, 2023
• Unscored —
  CVE-2023-53657

  ice: Don't tx before switchdev is fully configured

  In the Linux kernel, the following vulnerability has been resolved: ice: Don't tx before switchdev is fully configured There is possibility that ice_eswitch_port_start_xmit might be called while some resources are still not allocated which might cause NULL po…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  Oct 7, 2025

References

• article
  https://access.redhat.com/security/updates/classification/#important
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2217845
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2241924
• advisory
  https://security.access.redhat.com/data/csaf/v2/advisories/2023/rhsa-2023_7557.json
• report
  https://access.redhat.com/security/cve/CVE-2022-50679
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2420330
• advisory
  https://www.cve.org/CVERecord?id=CVE-2022-50679
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2022-50679
• article
  https://lore.kernel.org/linux-cve-announce/2025120949-CVE-2022-50679-b2b8@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2023-5178
• advisory
  https://www.cve.org/CVERecord?id=CVE-2023-5178
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2023-5178
• article
  https://lore.kernel.org/linux-nvme/20231002105428.226515-1-sagi@grimberg.me/
• report
  https://access.redhat.com/security/cve/CVE-2023-20593
• advisory
  https://www.cve.org/CVERecord?id=CVE-2023-20593
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2023-20593
• article
  https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=522b1d69219d8f083173819fde04f994aa051a98
• article
  https://www.amd.com/en/resources/product-security/bulletin/amd-sb-7008.html
• report
  https://access.redhat.com/security/cve/CVE-2023-53657
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2402281
• advisory
  https://www.cve.org/CVERecord?id=CVE-2023-53657
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2023-53657
• article
  https://lore.kernel.org/linux-cve-announce/2025100701-CVE-2023-53657-d0c7@gregkh/T