{"id":"CVE-2026-68480","state":"PUBLISHED","title":"x86/bugs: Make Safe-RET robust against interrupt injection","description":"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 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.","publishedAt":"2026-08-06T17:36:43.654Z","updatedAt":"2026-08-18T06:56:07.999Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"3f9b7101bea1dcb63410c016ceb266f6e9f733c9","status":"affected","lessThan":"dfefa3c51370f84acb643cddf98bb42c885d0483","versionType":"git"},{"version":"b35087763a44d1eb45857f799579a351332be505","status":"affected","lessThan":"52db77a13be224e09eb4ba6b4252ae8ab9085c2c","versionType":"git"},{"version":"ac41e90d8daa8815d8bee774a1975435fbfe1ae7","status":"affected","lessThan":"d0208e08d64d99383e09852a76cc3038c5a4c3ab","versionType":"git"},{"version":"fb3bd914b3ec28f5fb697ac55c4846ac2d542855","status":"affected","lessThan":"6703dba1d14cbd6647cd1ccfa3a3fa94b64dd096","versionType":"git"},{"version":"fb3bd914b3ec28f5fb697ac55c4846ac2d542855","status":"affected","lessThan":"e262f28a69ae9e0791248f93b0173c1d1f3e1d5d","versionType":"git"},{"version":"fb3bd914b3ec28f5fb697ac55c4846ac2d542855","status":"affected","lessThan":"bfe7f9993467ba431b2731437949ac1e2634e771","versionType":"git"},{"version":"fb3bd914b3ec28f5fb697ac55c4846ac2d542855","status":"affected","lessThan":"61649a2d61cb0dbc673f0f232f0f0c298bf50442","versionType":"git"},{"version":"fb3bd914b3ec28f5fb697ac55c4846ac2d542855","status":"affected","lessThan":"7e7f81cf6f5ca3311e526308f55d7c54d3ba71f9","versionType":"git"},{"version":"acdc883eb61efbe01b954e782e1124790bd391a8","status":"affected","versionType":"git"},{"version":"5.10.189","status":"affected","lessThan":"5.10.264","versionType":"semver"},{"version":"5.15.125","status":"affected","lessThan":"5.15.215","versionType":"semver"},{"version":"6.1.44","status":"affected","lessThan":"6.1.182","versionType":"semver"},{"version":"6.4.9","status":"affected","lessThan":"6.5","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/x86/entry/entry_64.S","arch/x86/include/asm/nospec-branch.h","arch/x86/kernel/cpu/bugs.c","arch/x86/lib/retpoline.S"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.5","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.5","versionType":"semver"},{"version":"5.10.264","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.215","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.182","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.150","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.102","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.43","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.7","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/x86/entry/entry_64.S","arch/x86/include/asm/nospec-branch.h","arch/x86/kernel/cpu/bugs.c","arch/x86/lib/retpoline.S"]}],"references":["https://git.kernel.org/stable/c/dfefa3c51370f84acb643cddf98bb42c885d0483","https://git.kernel.org/stable/c/52db77a13be224e09eb4ba6b4252ae8ab9085c2c","https://git.kernel.org/stable/c/d0208e08d64d99383e09852a76cc3038c5a4c3ab","https://git.kernel.org/stable/c/6703dba1d14cbd6647cd1ccfa3a3fa94b64dd096","https://git.kernel.org/stable/c/e262f28a69ae9e0791248f93b0173c1d1f3e1d5d","https://git.kernel.org/stable/c/bfe7f9993467ba431b2731437949ac1e2634e771","https://git.kernel.org/stable/c/61649a2d61cb0dbc673f0f232f0f0c298bf50442","https://git.kernel.org/stable/c/7e7f81cf6f5ca3311e526308f55d7c54d3ba71f9","https://people.csail.mit.edu/mengjia/data/2026.USENIX.TONTOU.pdf"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:49.727Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/68xxx/CVE-2026-68480.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-68480","state":"PUBLISHED","datePublished":"2026-08-06T17:36:43.654Z","dateUpdated":"2026-08-18T06:56:07.999Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-07-30T09:28:09.397Z"},"containers":{"cna":{"title":"x86/bugs: Make Safe-RET robust against interrupt injection","descriptions":[{"lang":"en","value":"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 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."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"3f9b7101bea1dcb63410c016ceb266f6e9f733c9","status":"affected","lessThan":"dfefa3c51370f84acb643cddf98bb42c885d0483","versionType":"git"},{"version":"b35087763a44d1eb45857f799579a351332be505","status":"affected","lessThan":"52db77a13be224e09eb4ba6b4252ae8ab9085c2c","versionType":"git"},{"version":"ac41e90d8daa8815d8bee774a1975435fbfe1ae7","status":"affected","lessThan":"d0208e08d64d99383e09852a76cc3038c5a4c3ab","versionType":"git"},{"version":"fb3bd914b3ec28f5fb697ac55c4846ac2d542855","status":"affected","lessThan":"6703dba1d14cbd6647cd1ccfa3a3fa94b64dd096","versionType":"git"},{"version":"fb3bd914b3ec28f5fb697ac55c4846ac2d542855","status":"affected","lessThan":"e262f28a69ae9e0791248f93b0173c1d1f3e1d5d","versionType":"git"},{"version":"fb3bd914b3ec28f5fb697ac55c4846ac2d542855","status":"affected","lessThan":"bfe7f9993467ba431b2731437949ac1e2634e771","versionType":"git"},{"version":"fb3bd914b3ec28f5fb697ac55c4846ac2d542855","status":"affected","lessThan":"61649a2d61cb0dbc673f0f232f0f0c298bf50442","versionType":"git"},{"version":"fb3bd914b3ec28f5fb697ac55c4846ac2d542855","status":"affected","lessThan":"7e7f81cf6f5ca3311e526308f55d7c54d3ba71f9","versionType":"git"},{"version":"acdc883eb61efbe01b954e782e1124790bd391a8","status":"affected","versionType":"git"},{"version":"5.10.189","status":"affected","lessThan":"5.10.264","versionType":"semver"},{"version":"5.15.125","status":"affected","lessThan":"5.15.215","versionType":"semver"},{"version":"6.1.44","status":"affected","lessThan":"6.1.182","versionType":"semver"},{"version":"6.4.9","status":"affected","lessThan":"6.5","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/x86/entry/entry_64.S","arch/x86/include/asm/nospec-branch.h","arch/x86/kernel/cpu/bugs.c","arch/x86/lib/retpoline.S"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.5","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.5","versionType":"semver"},{"version":"5.10.264","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.215","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.182","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.150","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.102","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.43","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.7","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/x86/entry/entry_64.S","arch/x86/include/asm/nospec-branch.h","arch/x86/kernel/cpu/bugs.c","arch/x86/lib/retpoline.S"]}],"references":[{"url":"https://git.kernel.org/stable/c/dfefa3c51370f84acb643cddf98bb42c885d0483"},{"url":"https://git.kernel.org/stable/c/52db77a13be224e09eb4ba6b4252ae8ab9085c2c"},{"url":"https://git.kernel.org/stable/c/d0208e08d64d99383e09852a76cc3038c5a4c3ab"},{"url":"https://git.kernel.org/stable/c/6703dba1d14cbd6647cd1ccfa3a3fa94b64dd096"},{"url":"https://git.kernel.org/stable/c/e262f28a69ae9e0791248f93b0173c1d1f3e1d5d"},{"url":"https://git.kernel.org/stable/c/bfe7f9993467ba431b2731437949ac1e2634e771"},{"url":"https://git.kernel.org/stable/c/61649a2d61cb0dbc673f0f232f0f0c298bf50442"},{"url":"https://git.kernel.org/stable/c/7e7f81cf6f5ca3311e526308f55d7c54d3ba71f9"},{"url":"https://people.csail.mit.edu/mengjia/data/2026.USENIX.TONTOU.pdf"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-08-18T06:56:07.999Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10.189","versionEndExcluding":"5.10.264"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15.125","versionEndExcluding":"5.15.215"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.1.44","versionEndExcluding":"6.1.182"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.5","versionEndExcluding":"6.6.150"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.5","versionEndExcluding":"6.12.102"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.5","versionEndExcluding":"6.18.43"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*: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