Unrated severityNVD Advisory· Published Nov 8, 2024· Updated Nov 3, 2025
x86/entry_32: Clear CPU buffers after register restore in NMI return
CVE-2024-50193
Description
In the Linux kernel, the following vulnerability has been resolved:
x86/entry_32: Clear CPU buffers after register restore in NMI return
CPU buffers are currently cleared after call to exc_nmi, but before register state is restored. This may be okay for MDS mitigation but not for RDFS. Because RDFS mitigation requires CPU buffers to be cleared when registers don't have any sensitive data.
Move CLEAR_CPU_BUFFERS after RESTORE_ALL_NMI.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
11- osv-coords10 versionspkg:deb/ubuntu/linux@6.11.0-18.18?arch=source&distro=oracularpkg:deb/ubuntu/linux-aws@6.11.0-1009.10?arch=source&distro=oracularpkg:deb/ubuntu/linux-azure@6.11.0-1009.9?arch=source&distro=oracularpkg:deb/ubuntu/linux-gcp@6.11.0-1009.9?arch=source&distro=oracularpkg:deb/ubuntu/linux-lowlatency@6.11.0-1010.11?arch=source&distro=oracularpkg:deb/ubuntu/linux-oracle@6.11.0-1011.12?arch=source&distro=oracularpkg:deb/ubuntu/linux-raspi@6.11.0-1008.8?arch=source&distro=oracularpkg:deb/ubuntu/linux-realtime@6.11.0-1005.5?arch=source&distro=oracularpkg:rpm/opensuse/kernel-source&distro=openSUSE%20Tumbleweedpkg:rpm/opensuse/kernel-source-longterm&distro=openSUSE%20Tumbleweed
< 6.11.0-18.18+ 9 more
- (no CPE)range: < 6.11.0-18.18
- (no CPE)range: < 6.11.0-1009.10
- (no CPE)range: < 6.11.0-1009.9
- (no CPE)range: < 6.11.0-1009.9
- (no CPE)range: < 6.11.0-1010.11
- (no CPE)range: < 6.11.0-1011.12
- (no CPE)range: < 6.11.0-1008.8
- (no CPE)range: < 6.11.0-1005.5
- (no CPE)range: < 6.11.8-1.1
- (no CPE)range: < 6.12.11-1.1
Patches
Vulnerability mechanics
References
6- git.kernel.org/stable/c/227358e89703c344008119be7e8ffa3fdb5b92demitre
- git.kernel.org/stable/c/43778de19d2ef129636815274644b9c16e78c66bmitre
- git.kernel.org/stable/c/48a2440d0f20c826b884e04377ccc1e4696c84e9mitre
- git.kernel.org/stable/c/64adf22c4bc73ede920baca5defefb70f190cdbcmitre
- git.kernel.org/stable/c/6f44a5fc15b5cece0785bc07453db77d99b0a6demitre
- git.kernel.org/stable/c/b6400eb0b347821efc57760221f8fb6d63b9548amitre
News mentions
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