Red Hat Security Advisory: kernel security update

Fixed packages 71

Vulnerabilities 5

• Critical 9.8
  CVE-2026-43198

  tcp: fix potential race in tcp_v6_syn_recv_sock()

  In the Linux kernel, the following vulnerability has been resolved: tcp: fix potential race in tcp_v6_syn_recv_sock() Code in tcp_v6_syn_recv_sock() after the call to tcp_v4_syn_recv_sock() is done too late. After tcp_v4_syn_recv_sock(), the child socket is a…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  May 6, 2026
• Critical 9.8
  CVE-2026-46135

  nvmet-tcp: fix race between ICReq handling and queue teardown

  In the Linux kernel, the following vulnerability has been resolved: nvmet-tcp: fix race between ICReq handling and queue teardown nvmet_tcp_handle_icreq() updates queue->state after sending an Initialization Connection Response (ICResp), but it does so withou…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  May 28, 2026
• High 8.8
  CVE-2026-31408

  Bluetooth: SCO: Fix use-after-free in sco_recv_frame() due to missing sock_hold

  In the Linux kernel, the following vulnerability has been resolved: Bluetooth: SCO: Fix use-after-free in sco_recv_frame() due to missing sock_hold sco_recv_frame() reads conn->sk under sco_conn_lock() but immediately releases the lock without holding a refer…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Apr 6, 2026
• High 7.8
  CVE-2025-68183

  ima: don't clear IMA_DIGSIG flag when setting or removing non-IMA xattr

  In the Linux kernel, the following vulnerability has been resolved: ima: don't clear IMA_DIGSIG flag when setting or removing non-IMA xattr Currently when both IMA and EVM are in fix mode, the IMA signature will be reset to IMA hash if a program first stores …

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  Dec 16, 2025
• High 7.0
  CVE-2026-46189

  RDMA/vmw_pvrdma: Fix double free on pvrdma_alloc_ucontext() error path

  In the Linux kernel, the following vulnerability has been resolved: RDMA/vmw_pvrdma: Fix double free on pvrdma_alloc_ucontext() error path Sashiko points out that pvrdma_uar_free() is already called within pvrdma_dealloc_ucontext(), so calling it before trigg…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  May 28, 2026

References

• article
  https://access.redhat.com/security/updates/classification/#important
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2422699
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2455334
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2467228
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2482588
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2482654
• advisory
  https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_36073.json
• report
  https://access.redhat.com/security/cve/CVE-2025-68183
• advisory
  https://www.cve.org/CVERecord?id=CVE-2025-68183
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2025-68183
• article
  https://lore.kernel.org/linux-cve-announce/2025121632-CVE-2025-68183-f588@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2026-31408
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-31408
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-31408
• article
  https://lore.kernel.org/linux-cve-announce/2026040629-CVE-2026-31408-9f0f@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2026-43198
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-43198
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-43198
• article
  https://lore.kernel.org/linux-cve-announce/2026050645-CVE-2026-43198-0870@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2026-46135
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-46135
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-46135
• article
  https://lore.kernel.org/linux-cve-announce/2026052818-CVE-2026-46135-6f53@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2026-46189
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-46189
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-46189
• article
  https://lore.kernel.org/linux-cve-announce/2026052831-CVE-2026-46189-c188@gregkh/T