CVE-2026-90094

CVE CVE-2026-90094EUVD EUVD-2026-81955Published 2026-09-17T16:06:07.000Z

What the advisory describes

In the Linux kernel, the following vulnerability has been resolved: arm64: process: Fix context switching MTE store-only tag check SCTLR_EL1.TCSO0 is set when user opt-in for MTE store-only tag check mode. However, it is not part of SCTLR_USER_MASK which imply that on context switch we never clear SCTLR_EL1.TCSO0, so we are leaking that setting into another task. Fix that by including SCTLR_EL1_TCSO0_MASK into SCTLR_USER_MASK

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

Linux — Linux patch: 0; 4d51ff5bba00a13ca9b0b24883fa7adb07a167fc <2f10bc3ff24c91657887901c3235b803e5055f2b; 4d51ff5bba00a13ca9b0b24883fa7adb07a167fc <b8f070ac3167595069feb1f794c127b805115645; 4d51ff5bba00a13ca9b0b24883fa7adb07a167fc <00a73ce437e27fdc636a5ede445a4a491e01788d; patch: 6.18.52; 6.17; patch: 7.3-rc1; patch: 7.2.6

The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.

Carried in the product catalogue

An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.

Linux — Linux

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