--- id: CVE-2026-68480 title: |- In the Linux kernel, the following vulnerability has been resolved: x86/bugs: Make Safe-RET robust against interrupt injection An attacker injecting interrupts while the Safe-RET mitigation executes on machines affected by SRSO can neu… summary: |- In the Linux kernel, the following vulnerability has been resolved: x86/bugs: Make Safe-RET robust against interrupt injection An attacker injecting interrupts while the Safe-RET mitigation executes on machines affected by SRSO can neu… severity: high published: '2026-08-06' updated: '2026-08-09' source: NVD sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-68480' references: - url: 'https://git.kernel.org/stable/c/52db77a13be224e09eb4ba6b4252ae8ab9085c2c' label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 - url: 'https://git.kernel.org/stable/c/61649a2d61cb0dbc673f0f232f0f0c298bf50442' label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 - url: 'https://git.kernel.org/stable/c/6703dba1d14cbd6647cd1ccfa3a3fa94b64dd096' label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 - url: 'https://git.kernel.org/stable/c/bfe7f9993467ba431b2731437949ac1e2634e771' label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 - url: 'https://git.kernel.org/stable/c/d0208e08d64d99383e09852a76cc3038c5a4c3ab' label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 - url: 'https://git.kernel.org/stable/c/dfefa3c51370f84acb643cddf98bb42c885d0483' label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 - url: 'https://git.kernel.org/stable/c/e262f28a69ae9e0791248f93b0173c1d1f3e1d5d' label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 - url: 'https://people.csail.mit.edu/mengjia/data/2026.USENIX.TONTOU.pdf' label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 - url: >- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-68480.json - url: 'https://access.redhat.com/security/cve/CVE-2026-68480' - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2508363' - url: 'https://www.cve.org/CVERecord?id=CVE-2026-68480' - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-68480' - url: >- https://lore.kernel.org/linux-cve-announce/2026080631-CVE-2026-68480-ad40@gregkh/ - url: 'https://access.redhat.com/errata/RHSA-2026:61887' - url: 'https://access.redhat.com/errata/RHSA-2026:73645' - url: 'https://access.redhat.com/errata/RHSA-2026:63129' - url: 'https://access.redhat.com/errata/RHSA-2026:63014' - url: 'https://access.redhat.com/errata/RHSA-2026:63013' - url: 'https://access.redhat.com/errata/RHSA-2026:74174' - url: 'https://access.redhat.com/errata/RHSA-2026:77216' - url: 'https://access.redhat.com/errata/RHSA-2026:83707' - url: 'https://access.redhat.com/errata/RHSA-2026:77301' tags: - nvd - csaf - vex - red-hat epss: 0.00234 epssPercentile: 0.14296 ingestedAt: '2026-08-09T04:32:44.395Z' vendor: Red Hat product: Red Hat Enterprise Linux BaseOS E4S (v.9.4) affected: - enterprise_linux 7 - enterprise_linux 9 - enterprise_linux_appstream_v_10 - enterprise_linux_appstream_e4s_v_9_4 - enterprise_linux_appstream_v_9 - enterprise_linux_baseos_v_10 - enterprise_linux_baseos_v_8 - enterprise_linux_baseos_e4s_v_9_4 - enterprise_linux_baseos_v_9 - enterprise_linux_codeready_linux_builder_v_10 - enterprise_linux_crb_v_8 - enterprise_linux_codeready_linux_builder_v_9 - enterprise_linux_real_time_for_nfv_v_10 - enterprise_linux_nfv_v_8 - enterprise_linux_real_time_for_nfv_e4s_v_9_4 - enterprise_linux_real_time_for_nfv_v_9 - enterprise_linux_real_time_v_10 - enterprise_linux_rt_v_8 - enterprise_linux_real_time_e4s_v_9_4 - enterprise_linux_real_time_v_9 patched: - enterprise_linux_appstream_v_10 - enterprise_linux_appstream_e4s_v_9_4 - enterprise_linux_appstream_v_9 - enterprise_linux_baseos_v_10 - enterprise_linux_baseos_v_8 - enterprise_linux_baseos_e4s_v_9_4 - enterprise_linux_baseos_v_9 - enterprise_linux_codeready_linux_builder_v_10 - enterprise_linux_crb_v_8 - enterprise_linux_codeready_linux_builder_v_9 - enterprise_linux_real_time_for_nfv_v_10 - enterprise_linux_nfv_v_8 - enterprise_linux_real_time_for_nfv_e4s_v_9_4 - enterprise_linux_real_time_for_nfv_v_9 - enterprise_linux_real_time_v_10 - enterprise_linux_rt_v_8 - enterprise_linux_real_time_e4s_v_9_4 - enterprise_linux_real_time_v_9 cvss: 8.8 cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H' cvssSource: vendor cwe: - CWE-201 --- ## Overview In the Linux kernel, the following vulnerability has been resolved: x86/bugs: Make Safe-RET robust against interrupt injection An attacker injecting interrupts while the Safe-RET mitigation executes on machines affected by SRSO can neutralize the safe return sequence, potentially leading to data leakage through speculative execution. Fixup register state as if the Safe-RET sequence executed successfully by "emulating" it, in a manner of speaking, and avoid executing a RET instruction after returning from the interrupt. ## Remediation Refer to the linked advisories for vendor-supplied fixes and affected version ranges. ## Vendor advisories - **RHSA-2026:61887** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 10), Red Hat Enterprise Linux BaseOS (v. 10), Red Hat Enterprise Linux CodeReady Linux Builder (v. 10), Red Hat Enterprise Linux Real Time for NFV (v. 10), Red Hat Enterprise Linux Real Time (v. 10) · released 2026-09-01 · [advisory](https://access.redhat.com/errata/RHSA-2026:61887) - **RHSA-2026:73645** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream E4S (v.9.4), Red Hat Enterprise Linux BaseOS E4S (v.9.4), Red Hat Enterprise Linux Real Time for NFV E4S (v.9.4), Red Hat Enterprise Linux Real Time E4S (v.9.4) · released 2026-09-30 · [advisory](https://access.redhat.com/errata/RHSA-2026:73645) - **RHSA-2026:63129** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 9), Red Hat Enterprise Linux BaseOS (v. 9), Red Hat Enterprise Linux CodeReady Linux Builder (v. 9), Red Hat Enterprise Linux Real Time for NFV (v. 9), Red Hat Enterprise Linux Real Time (v. 9) · released 2026-09-04 · [advisory](https://access.redhat.com/errata/RHSA-2026:63129) - **RHSA-2026:63014** · Red Hat · fixed in: Red Hat Enterprise Linux BaseOS (v. 8), Red Hat Enterprise Linux CRB (v. 8) · released 2026-09-03 · [advisory](https://access.redhat.com/errata/RHSA-2026:63014) - **RHSA-2026:63013** · Red Hat · fixed in: Red Hat Enterprise Linux NFV (v. 8), Red Hat Enterprise Linux RT (v. 8) · released 2026-09-03 · [advisory](https://access.redhat.com/errata/RHSA-2026:63013) - **Red Hat VEX** · Important · affected: Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 9 · no fix planned: Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 9 · updated 2026-10-16 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-68480.json) - **RHSA-2026:74174** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream EUS (v.9.6), Red Hat Enterprise Linux BaseOS EUS (v.9.6), Red Hat CodeReady Linux Builder EUS (v.9.6), Red Hat Enterprise Linux Real Time for NFV EUS (v.9.6), Red Hat Enterprise Linux Real Time EUS (v.9.6) · released 2026-10-01 · [advisory](https://access.redhat.com/errata/RHSA-2026:74174) - **RHSA-2026:77216** · Red Hat · fixed in: Red Hat Enterprise Linux BaseOS AUS (v.8.6), Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.6) · released 2026-10-07 · [advisory](https://access.redhat.com/errata/RHSA-2026:77216) - **RHSA-2026:83707** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream EUS (v. 10.0), Red Hat Enterprise Linux BaseOS EUS (v. 10.0), Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0), Red Hat Enterprise Linux Real Time for NFV EUS (v. 10.0), Red Hat Enterprise Linux Real Time EUS (v. 10.0) · released 2026-10-16 · [advisory](https://access.redhat.com/errata/RHSA-2026:83707) - **RHSA-2026:77301** · Red Hat · fixed in: Red Hat Enterprise Linux BaseOS E4S (v.8.8), Red Hat Enterprise Linux BaseOS TUS (v.8.8) · released 2026-10-07 · [advisory](https://access.redhat.com/errata/RHSA-2026:77301)