Red Hat Security Advisory: kernel security, bug fix, and enhancement update

Fixed packages 158

Vulnerabilities 3

• High 7.1
  CVE-2026-45856

  RDMA/uverbs: Validate wqe_size before using it in ib_uverbs_post_send

  In the Linux kernel, the following vulnerability has been resolved: RDMA/uverbs: Validate wqe_size before using it in ib_uverbs_post_send ib_uverbs_post_send() uses cmd.wqe_size from userspace without any validation before passing it to kmalloc() and using th…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  May 27, 2026
• Unscored —
  CVE-2026-63794

  KVM: SVM: Fix page overflow in sev_dbg_crypt() for ENCRYPT path

  In the Linux kernel, the following vulnerability has been resolved: KVM: SVM: Fix page overflow in sev_dbg_crypt() for ENCRYPT path In sev_dbg_crypt(), the per-iteration transfer length is bounded by the source page offset (PAGE_SIZE - s_off) but not by the d…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  Jul 19, 2026
• Unscored —
  CVE-2026-80775 Public exploit

  futex: Fix race on the initial mm->futex.phash.ref allocation

  In the Linux kernel, the following vulnerability has been resolved: futex: Fix race on the initial mm->futex.phash.ref allocation futex_hash_allocate() allocates mm->futex.phash.ref without any locking. Commit d9b05321e21e ("futex: Move futex_hash_free() back…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  Sep 4, 2026

References

• article
  https://access.redhat.com/security/updates/classification/#moderate
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2482129
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2502241
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2528550
• advisory
  https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_74438.json
• report
  https://access.redhat.com/security/cve/CVE-2026-45856
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-45856
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-45856
• article
  https://kernelcve.org/list/?q=CVE-2026-45856
• article
  https://lore.kernel.org/linux-cve-announce/2026052709-CVE-2026-45856-92b9@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2026-63794
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-63794
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-63794
• article
  https://lore.kernel.org/linux-cve-announce/2026071959-CVE-2026-63794-b463@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2026-80775
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-80775
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-80775
• article
  https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-80775.mbox