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CVE-2026-68480— x86/bugs: Make Safe-RET robust against interrupt injection

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会开源的一款操作系统内核。 Linux kernel 5.10.263之前版本、5.15.214之前版本、6.1.181之前版本、6.6.149之前版本、6.18.43之前版本和7.1.7之前版本存在安全漏洞，该漏洞源于Safe-RET缓解措施对中断注入处理不当，攻击者可在Safe-RET缓解措施执行时注入中断以中和安全返回序列，可能导致通过推测执行泄露数据。

AI Predicted 5.3 Difficulty: Moderate EPSS 0.23% · P13

Possible ATT&CK Techniques 1 AI

T1206

Affected Version Matrix 23

VendorProduct Version RangeStatus
Linux Linux 3f9b7101bea1dcb63410c016ceb266f6e9f733c9< dfefa3c51370f84acb643cddf98bb42c885d0483 affected
b35087763a44d1eb45857f799579a351332be505< 52db77a13be224e09eb4ba6b4252ae8ab9085c2c affected
ac41e90d8daa8815d8bee774a1975435fbfe1ae7< d0208e08d64d99383e09852a76cc3038c5a4c3ab affected
fb3bd914b3ec28f5fb697ac55c4846ac2d542855< 6703dba1d14cbd6647cd1ccfa3a3fa94b64dd096 affected
fb3bd914b3ec28f5fb697ac55c4846ac2d542855< e262f28a69ae9e0791248f93b0173c1d1f3e1d5d affected
fb3bd914b3ec28f5fb697ac55c4846ac2d542855< bfe7f9993467ba431b2731437949ac1e2634e771 affected
fb3bd914b3ec28f5fb697ac55c4846ac2d542855< 61649a2d61cb0dbc673f0f232f0f0c298bf50442 affected
fb3bd914b3ec28f5fb697ac55c4846ac2d542855< 7e7f81cf6f5ca3311e526308f55d7c54d3ba71f9 affected
… +15 more rows
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I. Basic Information for CVE-2026-68480

Vulnerability Information
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Vulnerability Title
x86/bugs: Make Safe-RET robust against interrupt injection
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会开源的一款操作系统内核。 Linux kernel 5.10.263之前版本、5.15.214之前版本、6.1.181之前版本、6.6.149之前版本、6.18.43之前版本和7.1.7之前版本存在安全漏洞，该漏洞源于Safe-RET缓解措施对中断注入处理不当，攻击者可在Safe-RET缓解措施执行时注入中断以中和安全返回序列，可能导致通过推测执行泄露数据。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux 3f9b7101bea1dcb63410c016ceb266f6e9f733c9 ~ dfefa3c51370f84acb643cddf98bb42c885d0483 -
Linux Linux 6.5 -

II. Public POCs for CVE-2026-68480

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III. Intelligence Information for CVE-2026-68480

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Patches & Fixes for CVE-2026-68480 (12)

Other References for CVE-2026-68480 (1)

Same Patch Batch · Linux · 2026-08-06 · 22 CVEs total

CVE-2026-64597 9.8 CRITICAL smb: client: fix double-free in SMB2_close() replay
CVE-2026-64598 8.8 HIGH smb/client: Fix error code in smb2_aead_req_alloc()
CVE-2026-64586 8.8 HIGH wifi: brcmfmac: drain bus_reset work on device removal
CVE-2026-64583 7.8 HIGH usb: gadget: udc: bdc: free IRQ and drain func_wake_notify before teardown
CVE-2026-64584 7.8 HIGH usb: gadget: f_midi: cancel pending IN work before freeing the midi object
CVE-2026-64601 7.8 HIGH ALSA: us144mkii: capture_urb_complete: redundant usb_anchor_urb corrupts anchor list on ea
CVE-2026-64599 7.8 HIGH crypto: amlogic - avoid double cleanup in meson_crypto_probe()
CVE-2026-64585 7.8 HIGH can: esd_usb: kill anchored URBs before freeing netdevs
CVE-2026-64588 7.8 HIGH fuse-uring: fix data races on ring->ready
CVE-2026-64587 7.0 HIGH net: ethernet: arc: emac: quiesce interrupts before requesting IRQ
CVE-2026-64593 btrfs: do not trim a device which is not writeable
CVE-2026-64589 i2c: core: fix NULL-deref on adapter registration failure
CVE-2026-64591 iommu/vt-d: Avoid WARNING in sva unbind path
CVE-2026-64590 dma-buf/udmabuf: skip redundant cpu sync to fix cacheline EEXIST warning
CVE-2026-64592 riscv: mm: Unconditionally sfence.vma for spurious fault
CVE-2026-64604 KVM: VMX: Grab vmcs12 on CR8 interception update iff vCPU is in guest mode
CVE-2026-64594 usb: gadget: f_fs: initialize reset_work at allocation time
CVE-2026-64595 HID: hid-lenovo-go: cancel cfg_setup work in hid_go_cfg_remove()
CVE-2026-64596 libfs: set SB_I_NOEXEC and SB_I_NODEV by default in init_pseudo()
CVE-2026-64603 platform/x86: intel-hid: Protect ACPI notify handler against recursion

Showing top 20 of 22 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-68480

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