CVE-2026-68480 (GCVE-0-2026-68480)
Vulnerability from cvelistv5
Published
2026-08-06 17:36
Modified
2026-08-18 06:56
Severity ?
VLAI Severity ?
EPSS score ?
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 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.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Version: 3f9b7101bea1dcb63410c016ceb266f6e9f733c9 Version: b35087763a44d1eb45857f799579a351332be505 Version: ac41e90d8daa8815d8bee774a1975435fbfe1ae7 Version: fb3bd914b3ec28f5fb697ac55c4846ac2d542855 Version: fb3bd914b3ec28f5fb697ac55c4846ac2d542855 Version: fb3bd914b3ec28f5fb697ac55c4846ac2d542855 Version: fb3bd914b3ec28f5fb697ac55c4846ac2d542855 Version: fb3bd914b3ec28f5fb697ac55c4846ac2d542855 Version: acdc883eb61efbe01b954e782e1124790bd391a8 Version: 5.10.189 ≤ Version: 5.15.125 ≤ Version: 6.1.44 ≤ Version: 6.4.9 ≤ |
||
{
"containers": {
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"arch/x86/entry/entry_64.S",
"arch/x86/include/asm/nospec-branch.h",
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"arch/x86/lib/retpoline.S"
],
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},
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"status": "affected",
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{
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}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"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"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "6.5"
},
{
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"status": "unaffected",
"version": "0",
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},
{
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"status": "unaffected",
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},
{
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"version": "5.15.215",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.182",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.150",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.102",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
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"version": "6.18.43",
"versionType": "semver"
},
{
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"status": "unaffected",
"version": "7.1.7",
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},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
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"nodes": [
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{
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],
"negate": false,
"operator": "OR"
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],
"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."
}
],
"providerMetadata": {
"dateUpdated": "2026-08-18T06:56:07.999Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"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"
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{
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{
"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"
}
],
"title": "x86/bugs: Make Safe-RET robust against interrupt injection",
"x_generator": {
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}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2026-68480",
"datePublished": "2026-08-06T17:36:43.654Z",
"dateReserved": "2026-07-30T09:28:09.397Z",
"dateUpdated": "2026-08-18T06:56:07.999Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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