{"id":"CVE-2026-68480","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nx86/bugs: Make Safe-RET robust against interrupt injection\n\nAn attacker injecting interrupts while the Safe-RET mitigation executes\non machines affected by SRSO can neu…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nx86/bugs: Make Safe-RET robust against interrupt injection\n\nAn attacker injecting interrupts while the Safe-RET mitigation executes\non 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"],"slug":"CVE-2026-68480","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nx86/bugs: Make Safe-RET robust against interrupt injection\n\nAn attacker injecting interrupts while the Safe-RET mitigation executes\non machines affected by SRSO can neutralize the safe return sequence,\npotentially leading to data leakage through speculative execution.\n\nFixup register state as if the Safe-RET sequence executed successfully\nby \"emulating\" it, in a manner of speaking, and avoid executing a RET\ninstruction after returning from the interrupt.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **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)\n- **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)\n- **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)\n- **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)\n- **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)\n- **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)\n- **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)\n- **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)\n- **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)\n- **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)","depth":"twilight","depthScore":48,"depthScoreParts":{"impact":48.4,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":214158,"id":"CVE-2026-68480","ts":1790841284167,"field":"cvss","old":null,"new":"8.8"},{"seq":214157,"id":"CVE-2026-68480","ts":1790841284167,"field":"severity","old":"none","new":"high"}]}