RHSA-2026:25121: Critical: kernel security update

Published Jun 10, 2026
·
Updated

Critical: kernel security update

Other sources

The kernel packages contain the Linux kernel, the core of any Linux operating system.Security Fix(es): kernel: geneve: Fix use-after-free in genevefinddev(). (CVE-2025-21858) kernel: smc: Fix use-after-free in tcpwritetimerhandler() (CVE-2023-53781) kernel: nbd: defer config unlock in nbdgenlconnect (CVE-2025-68366) kernel: libceph: prevent potential out-of-bounds reads in handleauthdone() (CVE-2026-22984) kernel: libceph: replace overzealous BUGON in osdmapapplyincremental() (CVE-2026-22990) kernel: netfilter: nftables: release flowtable after rcu grace period on error (CVE-2026-23392) kernel: ALSA: 6fire: fix use-after-free on disconnect (CVE-2026-31581) kernel: smb: client: fix OOB reads parsing symlink error response (CVE-2026-31613) kernel: ip6tunnel: clear skb2->cb[] in ip4ip6err() (CVE-2026-43037) kernel: ipv6: icmp: clear skb2->cb[] in ip6errgenicmpv6unreach() (CVE-2026-43038) kernel: dlm: validate length in dlmsearchrsbtree (CVE-2026-43125) kernel: RDMA/rxe: Fix double free in rxesrqfrominit (CVE-2026-45852) kernel: RDMA/mlx4: Fix mis-use of RCU in mlx4srqevent() (CVE-2026-46181) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

— Red Hat

Affected Software

116 affected componentsFixes available
Red Hat Red Hat Enterprise Linux for Power, little endian
Red Hat Red Hat CodeReady Linux Builder for x86_64
Red Hat Red Hat Enterprise Linux for ARM 64
Red Hat Red Hat Enterprise Linux for IBM z Systems - Extended Life Cycle
Red Hat Red Hat Enterprise Linux for Power, little endian - Extended Life Cycle
Red Hat Red Hat Enterprise Linux for IBM z Systems
Red Hat Red Hat CodeReady Linux Builder for ARM 64
Red Hat Red Hat Enterprise Linux for x86_64
Red Hat Red Hat Enterprise Linux for ARM 64 - Extended Life Cycle
Red Hat Red Hat CodeReady Linux Builder for Power, little endian
Red Hat Red Hat Enterprise Linux for x86_64 - Extended Life Cycle
redhat/kernel<4.18.0-553.132.1.el8_10
4.18.0-553.132.1.el8_10
redhat/bpftool<4.18.0-553.132.1.el8_10
4.18.0-553.132.1.el8_10
redhat/bpftool-debuginfo<4.18.0-553.132.1.el8_10
4.18.0-553.132.1.el8_10
redhat/kernel<4.18.0-553.132.1.el8_10
4.18.0-553.132.1.el8_10
redhat/kernel-abi-stablelists<4.18.0-553.132.1.el8_10
4.18.0-553.132.1.el8_10
redhat/kernel-core<4.18.0-553.132.1.el8_10
4.18.0-553.132.1.el8_10
redhat/kernel-cross-headers<4.18.0-553.132.1.el8_10
4.18.0-553.132.1.el8_10
redhat/kernel-debug<4.18.0-553.132.1.el8_10
4.18.0-553.132.1.el8_10
redhat/kernel-debug-core<4.18.0-553.132.1.el8_10
4.18.0-553.132.1.el8_10
redhat/kernel-debug-debuginfo<4.18.0-553.132.1.el8_10
4.18.0-553.132.1.el8_10
redhat/kernel-debug-devel<4.18.0-553.132.1.el8_10
4.18.0-553.132.1.el8_10
redhat/kernel-debug-modules<4.18.0-553.132.1.el8_10
4.18.0-553.132.1.el8_10
redhat/kernel-debug-modules-extra<4.18.0-553.132.1.el8_10
4.18.0-553.132.1.el8_10
redhat/kernel-debuginfo<4.18.0-553.132.1.el8_10
4.18.0-553.132.1.el8_10
redhat/kernel-devel<4.18.0-553.132.1.el8_10
4.18.0-553.132.1.el8_10
redhat/kernel-doc<4.18.0-553.132.1.el8_10
4.18.0-553.132.1.el8_10
redhat/kernel-headers<4.18.0-553.132.1.el8_10
4.18.0-553.132.1.el8_10
redhat/kernel-modules<4.18.0-553.132.1.el8_10
4.18.0-553.132.1.el8_10
redhat/kernel-modules-extra<4.18.0-553.132.1.el8_10
4.18.0-553.132.1.el8_10
redhat/kernel-tools<4.18.0-553.132.1.el8_10
4.18.0-553.132.1.el8_10
redhat/kernel-tools-debuginfo<4.18.0-553.132.1.el8_10
4.18.0-553.132.1.el8_10
redhat/kernel-tools-libs<4.18.0-553.132.1.el8_10
4.18.0-553.132.1.el8_10
redhat/perf<4.18.0-553.132.1.el8_10
4.18.0-553.132.1.el8_10
redhat/perf-debuginfo<4.18.0-553.132.1.el8_10
4.18.0-553.132.1.el8_10
redhat/python3-perf<4.18.0-553.132.1.el8_10
4.18.0-553.132.1.el8_10
redhat/python3-perf-debuginfo<4.18.0-553.132.1.el8_10
4.18.0-553.132.1.el8_10
redhat/bpftool<4.18.0-553.132.1.el8_10
4.18.0-553.132.1.el8_10
redhat/bpftool-debuginfo<4.18.0-553.132.1.el8_10
4.18.0-553.132.1.el8_10
redhat/kernel-core<4.18.0-553.132.1.el8_10
4.18.0-553.132.1.el8_10
redhat/kernel-cross-headers<4.18.0-553.132.1.el8_10
4.18.0-553.132.1.el8_10
redhat/kernel-debug<4.18.0-553.132.1.el8_10
4.18.0-553.132.1.el8_10
redhat/kernel-debug-core<4.18.0-553.132.1.el8_10
4.18.0-553.132.1.el8_10
redhat/kernel-debug-debuginfo<4.18.0-553.132.1.el8_10
4.18.0-553.132.1.el8_10
redhat/kernel-debug-devel<4.18.0-553.132.1.el8_10
4.18.0-553.132.1.el8_10
redhat/kernel-debug-modules<4.18.0-553.132.1.el8_10
4.18.0-553.132.1.el8_10
redhat/kernel-debug-modules-extra<4.18.0-553.132.1.el8_10
4.18.0-553.132.1.el8_10
redhat/kernel-debuginfo<4.18.0-553.132.1.el8_10
4.18.0-553.132.1.el8_10
redhat/kernel-debuginfo-common-s390x<4.18.0-553.132.1.el8_10
4.18.0-553.132.1.el8_10
redhat/kernel-devel<4.18.0-553.132.1.el8_10
4.18.0-553.132.1.el8_10
redhat/kernel-headers<4.18.0-553.132.1.el8_10
4.18.0-553.132.1.el8_10
redhat/kernel-modules<4.18.0-553.132.1.el8_10
4.18.0-553.132.1.el8_10
redhat/kernel-modules-extra<4.18.0-553.132.1.el8_10
4.18.0-553.132.1.el8_10
redhat/kernel-tools<4.18.0-553.132.1.el8_10
4.18.0-553.132.1.el8_10
redhat/kernel-tools-debuginfo<4.18.0-553.132.1.el8_10
4.18.0-553.132.1.el8_10
redhat/kernel-zfcpdump<4.18.0-553.132.1.el8_10
4.18.0-553.132.1.el8_10
redhat/kernel-zfcpdump-core<4.18.0-553.132.1.el8_10
4.18.0-553.132.1.el8_10
redhat/kernel-zfcpdump-debuginfo<4.18.0-553.132.1.el8_10
4.18.0-553.132.1.el8_10
redhat/kernel-zfcpdump-devel<4.18.0-553.132.1.el8_10
4.18.0-553.132.1.el8_10
redhat/kernel-zfcpdump-modules<4.18.0-553.132.1.el8_10
4.18.0-553.132.1.el8_10
redhat/kernel-zfcpdump-modules-extra<4.18.0-553.132.1.el8_10
4.18.0-553.132.1.el8_10
redhat/perf<4.18.0-553.132.1.el8_10
4.18.0-553.132.1.el8_10
redhat/perf-debuginfo<4.18.0-553.132.1.el8_10
4.18.0-553.132.1.el8_10
redhat/python3-perf<4.18.0-553.132.1.el8_10
4.18.0-553.132.1.el8_10
redhat/python3-perf-debuginfo<4.18.0-553.132.1.el8_10
4.18.0-553.132.1.el8_10
redhat/bpftool<4.18.0-553.132.1.el8_10
4.18.0-553.132.1.el8_10
redhat/bpftool-debuginfo<4.18.0-553.132.1.el8_10
4.18.0-553.132.1.el8_10
redhat/kernel<4.18.0-553.132.1.el8_10
4.18.0-553.132.1.el8_10
redhat/kernel-core<4.18.0-553.132.1.el8_10
4.18.0-553.132.1.el8_10
redhat/kernel-cross-headers<4.18.0-553.132.1.el8_10
4.18.0-553.132.1.el8_10
redhat/kernel-debug<4.18.0-553.132.1.el8_10
4.18.0-553.132.1.el8_10
redhat/kernel-debug-core<4.18.0-553.132.1.el8_10
4.18.0-553.132.1.el8_10
redhat/kernel-debug-debuginfo<4.18.0-553.132.1.el8_10
4.18.0-553.132.1.el8_10
redhat/kernel-debug-devel<4.18.0-553.132.1.el8_10
4.18.0-553.132.1.el8_10
redhat/kernel-debug-modules<4.18.0-553.132.1.el8_10
4.18.0-553.132.1.el8_10
redhat/kernel-debug-modules-extra<4.18.0-553.132.1.el8_10
4.18.0-553.132.1.el8_10
redhat/kernel-debuginfo<4.18.0-553.132.1.el8_10
4.18.0-553.132.1.el8_10
redhat/kernel-debuginfo-common-ppc64le<4.18.0-553.132.1.el8_10
4.18.0-553.132.1.el8_10
redhat/kernel-devel<4.18.0-553.132.1.el8_10
4.18.0-553.132.1.el8_10
redhat/kernel-headers<4.18.0-553.132.1.el8_10
4.18.0-553.132.1.el8_10
redhat/kernel-modules<4.18.0-553.132.1.el8_10
4.18.0-553.132.1.el8_10
redhat/kernel-modules-extra<4.18.0-553.132.1.el8_10
4.18.0-553.132.1.el8_10
redhat/kernel-tools<4.18.0-553.132.1.el8_10
4.18.0-553.132.1.el8_10
redhat/kernel-tools-debuginfo<4.18.0-553.132.1.el8_10
4.18.0-553.132.1.el8_10
redhat/kernel-tools-libs<4.18.0-553.132.1.el8_10
4.18.0-553.132.1.el8_10
redhat/perf<4.18.0-553.132.1.el8_10
4.18.0-553.132.1.el8_10
redhat/perf-debuginfo<4.18.0-553.132.1.el8_10
4.18.0-553.132.1.el8_10
redhat/python3-perf<4.18.0-553.132.1.el8_10
4.18.0-553.132.1.el8_10
redhat/python3-perf-debuginfo<4.18.0-553.132.1.el8_10
4.18.0-553.132.1.el8_10
redhat/bpftool<4.18.0-553.132.1.el8_10.aa
4.18.0-553.132.1.el8_10.aa
redhat/bpftool-debuginfo<4.18.0-553.132.1.el8_10.aa
4.18.0-553.132.1.el8_10.aa
redhat/kernel<4.18.0-553.132.1.el8_10.aa
4.18.0-553.132.1.el8_10.aa
redhat/kernel-core<4.18.0-553.132.1.el8_10.aa
4.18.0-553.132.1.el8_10.aa
redhat/kernel-cross-headers<4.18.0-553.132.1.el8_10.aa
4.18.0-553.132.1.el8_10.aa
redhat/kernel-debug<4.18.0-553.132.1.el8_10.aa
4.18.0-553.132.1.el8_10.aa
redhat/kernel-debug-core<4.18.0-553.132.1.el8_10.aa
4.18.0-553.132.1.el8_10.aa
redhat/kernel-debug-debuginfo<4.18.0-553.132.1.el8_10.aa
4.18.0-553.132.1.el8_10.aa
redhat/kernel-debug-devel<4.18.0-553.132.1.el8_10.aa
4.18.0-553.132.1.el8_10.aa
redhat/kernel-debug-modules<4.18.0-553.132.1.el8_10.aa
4.18.0-553.132.1.el8_10.aa
redhat/kernel-debug-modules-extra<4.18.0-553.132.1.el8_10.aa
4.18.0-553.132.1.el8_10.aa
redhat/kernel-debuginfo<4.18.0-553.132.1.el8_10.aa
4.18.0-553.132.1.el8_10.aa
redhat/kernel-debuginfo-common-aarch64<4.18.0-553.132.1.el8_10.aa
4.18.0-553.132.1.el8_10.aa
redhat/kernel-devel<4.18.0-553.132.1.el8_10.aa
4.18.0-553.132.1.el8_10.aa
redhat/kernel-headers<4.18.0-553.132.1.el8_10.aa
4.18.0-553.132.1.el8_10.aa
redhat/kernel-modules<4.18.0-553.132.1.el8_10.aa
4.18.0-553.132.1.el8_10.aa
redhat/kernel-modules-extra<4.18.0-553.132.1.el8_10.aa
4.18.0-553.132.1.el8_10.aa
redhat/kernel-tools<4.18.0-553.132.1.el8_10.aa
4.18.0-553.132.1.el8_10.aa
redhat/kernel-tools-debuginfo<4.18.0-553.132.1.el8_10.aa
4.18.0-553.132.1.el8_10.aa
redhat/kernel-tools-libs<4.18.0-553.132.1.el8_10.aa
4.18.0-553.132.1.el8_10.aa
redhat/perf<4.18.0-553.132.1.el8_10.aa
4.18.0-553.132.1.el8_10.aa
redhat/perf-debuginfo<4.18.0-553.132.1.el8_10.aa
4.18.0-553.132.1.el8_10.aa
redhat/python3-perf<4.18.0-553.132.1.el8_10.aa
4.18.0-553.132.1.el8_10.aa
redhat/python3-perf-debuginfo<4.18.0-553.132.1.el8_10.aa
4.18.0-553.132.1.el8_10.aa
redhat/kernel-tools-libs-devel<4.18.0-553.132.1.el8_10
4.18.0-553.132.1.el8_10
redhat/kernel-tools-libs-devel<4.18.0-553.132.1.el8_10
4.18.0-553.132.1.el8_10
redhat/kernel-tools-libs-devel<4.18.0-553.132.1.el8_10.aa
4.18.0-553.132.1.el8_10.aa

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade redhat/kernel to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.132.1.el8_10
  2. Upgrade

    Upgrade redhat/bpftool to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.132.1.el8_10
  3. Upgrade

    Upgrade redhat/bpftool-debuginfo to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.132.1.el8_10
  4. Upgrade

    Upgrade redhat/kernel-abi-stablelists to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.132.1.el8_10
  5. Upgrade

    Upgrade redhat/kernel-core to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.132.1.el8_10
  6. Upgrade

    Upgrade redhat/kernel-cross-headers to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.132.1.el8_10
  7. Upgrade

    Upgrade redhat/kernel-debug to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.132.1.el8_10
  8. Upgrade

    Upgrade redhat/kernel-debug-core to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.132.1.el8_10
  9. Upgrade

    Upgrade redhat/kernel-debug-debuginfo to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.132.1.el8_10
  10. Upgrade

    Upgrade redhat/kernel-debug-devel to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.132.1.el8_10
  11. Upgrade

    Upgrade redhat/kernel-debug-modules to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.132.1.el8_10
  12. Upgrade

    Upgrade redhat/kernel-debug-modules-extra to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.132.1.el8_10
  13. Upgrade

    Upgrade redhat/kernel-debuginfo to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.132.1.el8_10
  14. Upgrade

    Upgrade redhat/kernel-devel to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.132.1.el8_10
  15. Upgrade

    Upgrade redhat/kernel-doc to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.132.1.el8_10
  16. Upgrade

    Upgrade redhat/kernel-headers to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.132.1.el8_10
  17. Upgrade

    Upgrade redhat/kernel-modules to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.132.1.el8_10
  18. Upgrade

    Upgrade redhat/kernel-modules-extra to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.132.1.el8_10
  19. Upgrade

    Upgrade redhat/kernel-tools to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.132.1.el8_10
  20. Upgrade

    Upgrade redhat/kernel-tools-debuginfo to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.132.1.el8_10
  21. Upgrade

    Upgrade redhat/kernel-tools-libs to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.132.1.el8_10
  22. Upgrade

    Upgrade redhat/perf to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.132.1.el8_10
  23. Upgrade

    Upgrade redhat/perf-debuginfo to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.132.1.el8_10
  24. Upgrade

    Upgrade redhat/python3-perf to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.132.1.el8_10
  25. Upgrade

    Upgrade redhat/python3-perf-debuginfo to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.132.1.el8_10
  26. Upgrade

    Upgrade redhat/kernel-debuginfo-common-s390x to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.132.1.el8_10
  27. Upgrade

    Upgrade redhat/kernel-zfcpdump to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.132.1.el8_10
  28. Upgrade

    Upgrade redhat/kernel-zfcpdump-core to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.132.1.el8_10
  29. Upgrade

    Upgrade redhat/kernel-zfcpdump-debuginfo to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.132.1.el8_10
  30. Upgrade

    Upgrade redhat/kernel-zfcpdump-devel to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.132.1.el8_10
  31. Upgrade

    Upgrade redhat/kernel-zfcpdump-modules to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.132.1.el8_10
  32. Upgrade

    Upgrade redhat/kernel-zfcpdump-modules-extra to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.132.1.el8_10
  33. Upgrade

    Upgrade redhat/kernel-debuginfo-common-ppc64le to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.132.1.el8_10
  34. Upgrade

    Upgrade redhat/bpftool to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.132.1.el8_10.aa
  35. Upgrade

    Upgrade redhat/bpftool-debuginfo to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.132.1.el8_10.aa
  36. Upgrade

    Upgrade redhat/kernel to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.132.1.el8_10.aa
  37. Upgrade

    Upgrade redhat/kernel-core to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.132.1.el8_10.aa
  38. Upgrade

    Upgrade redhat/kernel-cross-headers to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.132.1.el8_10.aa
  39. Upgrade

    Upgrade redhat/kernel-debug to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.132.1.el8_10.aa
  40. Upgrade

    Upgrade redhat/kernel-debug-core to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.132.1.el8_10.aa
  41. Upgrade

    Upgrade redhat/kernel-debug-debuginfo to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.132.1.el8_10.aa
  42. Upgrade

    Upgrade redhat/kernel-debug-devel to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.132.1.el8_10.aa
  43. Upgrade

    Upgrade redhat/kernel-debug-modules to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.132.1.el8_10.aa
  44. Upgrade

    Upgrade redhat/kernel-debug-modules-extra to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.132.1.el8_10.aa
  45. Upgrade

    Upgrade redhat/kernel-debuginfo to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.132.1.el8_10.aa
  46. Upgrade

    Upgrade redhat/kernel-debuginfo-common-aarch64 to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.132.1.el8_10.aa
  47. Upgrade

    Upgrade redhat/kernel-devel to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.132.1.el8_10.aa
  48. Upgrade

    Upgrade redhat/kernel-headers to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.132.1.el8_10.aa
  49. Upgrade

    Upgrade redhat/kernel-modules to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.132.1.el8_10.aa
  50. Upgrade

    Upgrade redhat/kernel-modules-extra to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.132.1.el8_10.aa
  51. Upgrade

    Upgrade redhat/kernel-tools to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.132.1.el8_10.aa
  52. Upgrade

    Upgrade redhat/kernel-tools-debuginfo to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.132.1.el8_10.aa
  53. Upgrade

    Upgrade redhat/kernel-tools-libs to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.132.1.el8_10.aa
  54. Upgrade

    Upgrade redhat/perf to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.132.1.el8_10.aa
  55. Upgrade

    Upgrade redhat/perf-debuginfo to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.132.1.el8_10.aa
  56. Upgrade

    Upgrade redhat/python3-perf to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.132.1.el8_10.aa
  57. Upgrade

    Upgrade redhat/python3-perf-debuginfo to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.132.1.el8_10.aa
  58. Upgrade

    Upgrade redhat/kernel-tools-libs-devel to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.132.1.el8_10
  59. Upgrade

    Upgrade redhat/kernel-tools-libs-devel to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.132.1.el8_10.aa

Event History

Jun 10, 2026
Advisory Published
via Red Hat·07:29 PM
Data Sourced
via Red Hat·07:29 PM
DescriptionSeverityAffected Software
Jul 15, 2026
Advisory Published
via Red Hat·08:45 PM
Data Sourced
via Red Hat·08:45 PM
Remedy
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Frequently Asked Questions

1

What is the severity of RHSA-2026:25121?

The severity of RHSA-2026:25121 is critical with a score of 9.

2

How do I fix RHSA-2026:25121?

You can fix RHSA-2026:25121 by applying the kernel security update available for your specific Red Hat Enterprise Linux version.

3

What vulnerabilities are addressed in RHSA-2026:25121?

RHSA-2026:25121 addresses vulnerabilities related to use-after-free in geneve_find_dev() and tcp_write_timer_handler().

4

What systems are affected by RHSA-2026:25121?

RHSA-2026:25121 affects various versions of Red Hat Enterprise Linux for Power, x86_64, ARM 64, and IBM z Systems.

5

Do I need to reboot my system after applying RHSA-2026:25121?

Yes, you must reboot your system for the changes from RHSA-2026:25121 to take effect.

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