arm64: process: Fix context switching MTE store-only tag check
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 6.18.52, 7.2.6
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
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
Timeline
- CVE published
- Record last updated
Affected versions
- Linux Linux
From 4d51ff5bba00a13ca9b0b24883fa7adb07a167fc · fixed in 00a73ce437e27fdc636a5ede445a4a491e01788d; From 4d51ff5bba00a13ca9b0b24883fa7adb07a167fc · fixed in 2f10bc3ff24c91657887901c3235b803e5055f2b; From 4d51ff5bba00a13ca9b0b24883fa7adb07a167fc · fixed in b8f070ac3167595069feb1f794c127b805115645
- Linux Linux
6.17
- KernelLinux
From 6.17.0 · fixed in 6.18.52; From 6.19.0 · fixed in 7.2.6