Red Hat Security Advisory: kernel-rt security update

Fixed packages 32

Vulnerabilities 10

• 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
• High 7.8
  CVE-2023-3609 Public exploit

  Use-after-free in Linux kernel's net/sched: cls_u32 component

  A use-after-free vulnerability in the Linux kernel's net/sched: cls_u32 component can be exploited to achieve local privilege escalation. If tcf_change_indev() fails, u32_set_parms() will immediately return an error after incrementing or decrementing the refe…

  Linux kernel linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Jul 21, 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-2023-4206

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

  A use-after-free vulnerability in the Linux kernel's net/sched: cls_route component can be exploited to achieve local privilege escalation. When route4_change() is called on an existing filter, the whole tcf_result struct is always copied into the new instanc…

  Linux kernel linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Sep 6, 2023
• High 7.8
  CVE-2023-4207

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

  A use-after-free vulnerability in the Linux kernel's net/sched: cls_fw component can be exploited to achieve local privilege escalation. When fw_change() is called on an existing filter, the whole tcf_result struct is always copied into the new instance of th…

  Linux kernel linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Sep 6, 2023
• High 7.8
  CVE-2023-4208

  Use-after-free in Linux kernel's net/sched: cls_u32 component

  A use-after-free vulnerability in the Linux kernel's net/sched: cls_u32 component can be exploited to achieve local privilege escalation. When u32_change() is called on an existing filter, the whole tcf_result struct is always copied into the new instance of …

  Linux kernel linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Sep 6, 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
• Unscored —
  CVE-2022-27672

  When SMT is enabled, certain AMD processors may speculatively execute instructions using a target from the sibling thre…

  AMD 2nd Gen AMD EPYC™ Processors 1st Gen AMD EPYC™ Processors Ryzen™ Threadripper™ PRO Processor Debian Ubuntu Alpine
  Feb 14, 2023
• Unscored —
  CVE-2023-4128 Public exploit Rejected

  ** REJECT ** DO NOT USE THIS CVE RECORD. ConsultIDs: CVE-2023-4206, CVE-2023-4207, CVE-2023-4208. Reason: This record i…

  linux-raspi2 linux-hwe linux-azure linux-riscv Ubuntu
  Aug 10, 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=2174765
• 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=2225201
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2225511
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2239843
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2241924
• advisory
  https://security.access.redhat.com/data/csaf/v2/advisories/2023/rhsa-2023_7379.json
• report
  https://access.redhat.com/security/cve/CVE-2022-27672
• advisory
  https://www.cve.org/CVERecord?id=CVE-2022-27672
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2022-27672
• article
  https://kernel.org/doc/html//next/admin-guide/hw-vuln/cross-thread-rsb.html
• article
  https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1045
• article
  https://www.openwall.com/lists/oss-security/2023/02/14/4
• article
  https://xenbits.xen.org/xsa/advisory-426.html
• 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-2023-3609
• advisory
  https://www.cve.org/CVERecord?id=CVE-2023-3609
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2023-3609
• article
  https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=04c55383fa5689357bcdd2c8036725a55ed632bc
• 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-2023-4128
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2261965
• advisory
  https://www.cve.org/CVERecord?id=CVE-2023-4128
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2023-4128
• report
  https://access.redhat.com/security/cve/CVE-2023-4206
• report
  https://access.redhat.com/security/cve/CVE-2023-4207
• report
  https://access.redhat.com/security/cve/CVE-2023-4208
• advisory
  https://www.cve.org/CVERecord?id=CVE-2023-4206
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2023-4206
• article
  https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3044b16e7c6fe5d24b1cdbcf1bd0a9d92d1ebd81