Red Hat Security Advisory: kernel security update

Fixed packages 72

Vulnerabilities 8

• High 7.8
  CVE-2023-31436

  qfq_change_class in net/sched/sch_qfq.c in the Linux kernel before 6.2.13 allows an out-of-bounds write because lmax ca…

  linux-raspi2 linux-hwe linux-azure linux-riscv Debian Ubuntu Azure Linux
  Apr 28, 2023
• High 7.8
  CVE-2023-3611

  Out-of-bounds write in Linux kernel's net/sched: sch_qfq component

  An out-of-bounds write vulnerability in the Linux kernel's net/sched: sch_qfq component can be exploited to achieve local privilege escalation. The qfq_change_agg() function in net/sched/sch_qfq.c allows an out-of-bounds write because lmax is updated accordin…

  Linux kernel linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Jul 21, 2023
• High 7.8
  CVE-2023-3776 Public exploit

  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. If tcf_change_indev() fails, fw_set_parms() will immediately return an error after incrementing or decrementing the refere…

  Linux kernel linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Jul 21, 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
• 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-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=2223949
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2225097
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2225191
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2225511
• advisory
  https://security.access.redhat.com/data/csaf/v2/advisories/2023/rhsa-2023_7423.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-2023-3611
• advisory
  https://www.cve.org/CVERecord?id=CVE-2023-3611
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2023-3611
• article
  https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3e337087c3b5805fe0b8a46ba622a962880b5d64
• report
  https://access.redhat.com/security/cve/CVE-2023-3776
• advisory
  https://www.cve.org/CVERecord?id=CVE-2023-3776
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2023-3776
• article
  https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=0323bce598eea038714f941ce2b22541c46d488f
• 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
• article
  https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=76e42ae831991c828cffa8c37736ebfb831ad5ec
• article
  https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b80b829e9e2c1b3f7aae34855e04d8f6ecaf13c8
• article
  https://lore.kernel.org/netdev/193d6cdf-d6c9-f9be-c36a-b2a7551d5fb6@mojatatu.com/
• advisory
  https://www.cve.org/CVERecord?id=CVE-2023-4207
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2023-4207
• advisory
  https://www.cve.org/CVERecord?id=CVE-2023-4208
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2023-4208
• report
  https://access.redhat.com/security/cve/CVE-2023-31436
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2192671
• advisory
  https://www.cve.org/CVERecord?id=CVE-2023-31436