Linux · Security advisory · September 13, 2026
RHSA-2026:63013: Security update for 12 packages
RHSA-2026:63013, released September 13, 2026, fixes 14 CVEs across 12 products. None of them is reported as exploited. Patch Radar priority: Urgent.
Urgent
CVEs closed
14
1 rated Critical
Exploited
0
None reported
Exploitation more likely
0
Vendor assessment
Highest EPSS
0.0071
53rd percentile
Priority of the 14 CVEs
Patch now 0
Urgent 1
High 13
Routine 0
Fixed package versions
| Product | Release | Fixed in |
|---|---|---|
| kernel-rt | RHEL 8 | 0:4.18.0-553.159.1.rt7.500.el8_10 |
| kernel-rt-core | RHEL 8 | 0:4.18.0-553.159.1.rt7.500.el8_10 |
| kernel-rt-debug | RHEL 8 | 0:4.18.0-553.159.1.rt7.500.el8_10 |
| kernel-rt-debug-core | RHEL 8 | 0:4.18.0-553.159.1.rt7.500.el8_10 |
| kernel-rt-debug-devel | RHEL 8 | 0:4.18.0-553.159.1.rt7.500.el8_10 |
| kernel-rt-debug-kvm | RHEL 8 | 0:4.18.0-553.159.1.rt7.500.el8_10 |
| kernel-rt-debug-modules | RHEL 8 | 0:4.18.0-553.159.1.rt7.500.el8_10 |
| kernel-rt-debug-modules-extra | RHEL 8 | 0:4.18.0-553.159.1.rt7.500.el8_10 |
| kernel-rt-devel | RHEL 8 | 0:4.18.0-553.159.1.rt7.500.el8_10 |
| kernel-rt-kvm | RHEL 8 | 0:4.18.0-553.159.1.rt7.500.el8_10 |
| kernel-rt-modules | RHEL 8 | 0:4.18.0-553.159.1.rt7.500.el8_10 |
| kernel-rt-modules-extra | RHEL 8 | 0:4.18.0-553.159.1.rt7.500.el8_10 |
CVEs this fix closes
| Priority | CVE | Title | Impact | CVSS | EPSS | Exploitation |
|---|---|---|---|---|---|---|
| Urgent | CVE-2026-63800 | pNFS: Fix use-after-free in pnfs_update_layout() | 9.8 | 0.0064 | None reported | |
| High | CVE-2026-64268 | RDMA/siw: bound Read Response placement to the RREAD length | 9.8 | 0.0071 | None reported | |
| High | CVE-2026-53399 | nfsd: release layout stid on setlease failure | 9.8 | 0.0066 | None reported | |
| High | CVE-2026-53392 | NFSv4/flexfiles: reject zero filehandle version count | 8.8 | 0.0053 | None reported | |
| High | CVE-2026-53397 | nfsd: fix posix_acl leak on SETACL decode failure | 8.8 | 0.0053 | None reported | |
| High | CVE-2026-53391 | NFSv4/pNFS: reject zero-length r_addr in nfs4_decode_mp_ds_addr | 8.8 | 0.0052 | None reported | |
| High | CVE-2026-74581 | net: ipv6: clear suppressed fib6 rule result | 9.8 | 0.0042 | None reported | |
| High | CVE-2026-68480 | x86/bugs: Make Safe-RET robust against interrupt injection | 8.8 | 0.0023 | None reported | |
| High | CVE-2025-71132 | smc91x: fix broken irq-context in PREEMPT_RT | 8.8 | 0.0022 | None reported | |
| High | CVE-2024-57849 | linux: In the Linux kernel, the following vulnerability has been resolved: s390/cpum_sf: Handle CPU hotplug remove during s... | 8.8 | 0.0021 | None reported | |
| High | CVE-2026-64298 | NFSv4: include MAY_WRITE in open permission mask for O_TRUNC | 8.8 | 0.0015 | None reported | |
| High | CVE-2026-64018 | kernel: In the Linux kernel, the following vulnerability has been resolved: net: mana: validate rx_req_idx to prevent out-of-... | 9.3 | 0.0014 | None reported | |
| High | CVE-2026-45970 | kernel-rt-devel: The kernel packages contain the Linux kernel, the core of any Linux operating system | 8.8 | 0.0013 | None reported | |
| High | CVE-2026-53185 | kernel: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: k... | 8.8 | 0.0011 | None reported |
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