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OpenAdvisories
High RHSA-2023:6799 3 CVEs

Red Hat Security Advisory: kpatch-patch security update

Published Sep 13, 2024 · Updated Aug 7, 2026

Ecosystem: Red Hat

Fixed packages 12

ReleasePackageFixed in
Red Hat · RHEL 8.1 E4S rhel_e4s:8.1::baseos kpatch-patch-4_18_0-147_83_1 0:1-5.el8_1
Red Hat · RHEL 8.1 E4S rhel_e4s:8.1::baseos kpatch-patch-4_18_0-147_83_1-debuginfo 0:1-5.el8_1
Red Hat · RHEL 8.1 E4S rhel_e4s:8.1::baseos kpatch-patch-4_18_0-147_83_1-debugsource 0:1-5.el8_1
Red Hat · RHEL 8.1 E4S rhel_e4s:8.1::baseos kpatch-patch-4_18_0-147_85_1 0:1-3.el8_1
Red Hat · RHEL 8.1 E4S rhel_e4s:8.1::baseos kpatch-patch-4_18_0-147_85_1-debuginfo 0:1-3.el8_1
Red Hat · RHEL 8.1 E4S rhel_e4s:8.1::baseos kpatch-patch-4_18_0-147_85_1-debugsource 0:1-3.el8_1
Red Hat · RHEL 8.1 E4S rhel_e4s:8.1::baseos kpatch-patch-4_18_0-147_87_1 0:1-2.el8_1
Red Hat · RHEL 8.1 E4S rhel_e4s:8.1::baseos kpatch-patch-4_18_0-147_87_1-debuginfo 0:1-2.el8_1
Red Hat · RHEL 8.1 E4S rhel_e4s:8.1::baseos kpatch-patch-4_18_0-147_87_1-debugsource 0:1-2.el8_1
Red Hat · RHEL 8.1 E4S rhel_e4s:8.1::baseos kpatch-patch-4_18_0-147_90_1 0:1-1.el8_1
Red Hat · RHEL 8.1 E4S rhel_e4s:8.1::baseos kpatch-patch-4_18_0-147_90_1-debuginfo 0:1-1.el8_1
Red Hat · RHEL 8.1 E4S rhel_e4s:8.1::baseos kpatch-patch-4_18_0-147_90_1-debugsource 0:1-1.el8_1

Vulnerabilities 3

  • 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
  • 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
  • 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

References

  • article
    https://access.redhat.com/security/updates/classification/#important
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2224048
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2225097
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2225201
  • advisory
    https://security.access.redhat.com/data/csaf/v2/advisories/2023/rhsa-2023_6799.json
  • 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-2023-3776
  • 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-2023-3812
  • 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