CVE-2024-26618: arm64/sme: Always exit sme_alloc() early with existing storage
First published: Thu Feb 29 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: arm64/sme: Always exit sme_alloc() early with existing storage When sme_alloc() is called with existing storage and we are not flushing we will always allocate new storage, both leaking the existing storage and corrupting the state. Fix this by separating the checks for flushing and for existing storage as we do for SVE. Callers that reallocate (eg, due to changing the vector length) should call sme_free() themselves.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/linux | <=6.1.94-1<=6.1.99-1 | 5.10.218-1 5.10.221-1 6.9.10-1 6.9.12-1 |
| ubuntu/linux | <6.5.0-41.41 | 6.5.0-41.41 |
| ubuntu/linux | <6.8~ | 6.8~ |
| ubuntu/linux-aws | <6.5.0-1021.21 | 6.5.0-1021.21 |
| ubuntu/linux-aws | <6.8~ | 6.8~ |
| ubuntu/linux-aws-5.15 | <6.8~ | 6.8~ |
| ubuntu/linux-aws-5.4 | <6.8~ | 6.8~ |
| ubuntu/linux-aws-6.5 | <6.8~ | 6.8~ |
| ubuntu/linux-aws-fips | <6.8~ | 6.8~ |
| ubuntu/linux-aws-hwe | <6.8~ | 6.8~ |
| ubuntu/linux-azure | <6.5.0-1022.23 | 6.5.0-1022.23 |
| ubuntu/linux-azure | <6.8~ | 6.8~ |
| ubuntu/linux-azure-4.15 | <6.8~ | 6.8~ |
| ubuntu/linux-azure-5.15 | <6.8~ | 6.8~ |
| ubuntu/linux-azure-5.4 | <6.8~ | 6.8~ |
| ubuntu/linux-azure-6.5 | <6.5.0-1022.23~22.04.1 | 6.5.0-1022.23~22.04.1 |
| ubuntu/linux-azure-6.5 | <6.8~ | 6.8~ |
| ubuntu/linux-azure-fde | <6.8~ | 6.8~ |
| ubuntu/linux-azure-fde-5.15 | <6.8~ | 6.8~ |
| ubuntu/linux-azure-fips | <6.8~ | 6.8~ |
| ubuntu/linux-bluefield | <6.8~ | 6.8~ |
| ubuntu/linux-fips | <6.8~ | 6.8~ |
| ubuntu/linux-gcp | <6.5.0-1022.24 | 6.5.0-1022.24 |
| ubuntu/linux-gcp | <6.8~ | 6.8~ |
| ubuntu/linux-gcp-4.15 | <6.8~ | 6.8~ |
| ubuntu/linux-gcp-5.15 | <6.8~ | 6.8~ |
| ubuntu/linux-gcp-5.4 | <6.8~ | 6.8~ |
| ubuntu/linux-gcp-6.5 | <6.5.0-1022.24~22.04.1 | 6.5.0-1022.24~22.04.1 |
| ubuntu/linux-gcp-6.5 | <6.8~ | 6.8~ |
| ubuntu/linux-gcp-fips | <6.8~ | 6.8~ |
| ubuntu/linux-gke | <6.8~ | 6.8~ |
| ubuntu/linux-gkeop | <6.8~ | 6.8~ |
| ubuntu/linux-gkeop-5.15 | <6.8~ | 6.8~ |
| ubuntu/linux-hwe | <6.8~ | 6.8~ |
| ubuntu/linux-hwe-5.15 | <6.8~ | 6.8~ |
| ubuntu/linux-hwe-5.4 | <6.8~ | 6.8~ |
| ubuntu/linux-hwe-6.5 | <6.5.0-41.41~22.04.2 | 6.5.0-41.41~22.04.2 |
| ubuntu/linux-hwe-6.5 | <6.8~ | 6.8~ |
| ubuntu/linux-ibm | <6.8~ | 6.8~ |
| ubuntu/linux-ibm-5.15 | <6.8~ | 6.8~ |
| ubuntu/linux-ibm-5.4 | <6.8~ | 6.8~ |
| ubuntu/linux-intel | <6.8~ | 6.8~ |
| ubuntu/linux-intel-iotg | <6.8~ | 6.8~ |
| ubuntu/linux-intel-iotg-5.15 | <6.8~ | 6.8~ |
| ubuntu/linux-iot | <6.8~ | 6.8~ |
| ubuntu/linux-kvm | <6.8~ | 6.8~ |
| ubuntu/linux-laptop | <6.5.0-1017.20 | 6.5.0-1017.20 |
| ubuntu/linux-laptop | <6.8~ | 6.8~ |
| ubuntu/linux-lowlatency | <6.5.0-41.41.1 | 6.5.0-41.41.1 |
| ubuntu/linux-lowlatency | <6.8~ | 6.8~ |
| ubuntu/linux-lowlatency-hwe-5.15 | <6.8~ | 6.8~ |
| ubuntu/linux-lowlatency-hwe-6.5 | <6.5.0-41.41.1~22.04.1 | 6.5.0-41.41.1~22.04.1 |
| ubuntu/linux-lowlatency-hwe-6.5 | <6.8~ | 6.8~ |
| ubuntu/linux-lts-xenial | <6.8~ | 6.8~ |
| ubuntu/linux-nvidia | <6.8~ | 6.8~ |
| ubuntu/linux-nvidia-6.5 | <6.5.0-1021.22 | 6.5.0-1021.22 |
| ubuntu/linux-nvidia-6.5 | <6.8~ | 6.8~ |
| ubuntu/linux-nvidia-6.8 | <6.8~ | 6.8~ |
| ubuntu/linux-nvidia-lowlatency | <6.8~ | 6.8~ |
| ubuntu/linux-oem-6.1 | <6.8~ | 6.8~ |
| ubuntu/linux-oem-6.5 | <6.5.0-1024.25 | 6.5.0-1024.25 |
| ubuntu/linux-oem-6.5 | <6.8~ | 6.8~ |
| ubuntu/linux-oem-6.8 | <6.8~ | 6.8~ |
| ubuntu/linux-oracle | <6.5.0-1024.24 | 6.5.0-1024.24 |
| ubuntu/linux-oracle | <6.8~ | 6.8~ |
| ubuntu/linux-oracle-5.15 | <6.8~ | 6.8~ |
| ubuntu/linux-oracle-5.4 | <6.8~ | 6.8~ |
| ubuntu/linux-oracle-6.5 | <6.5.0-1024.24~22.04.1 | 6.5.0-1024.24~22.04.1 |
| ubuntu/linux-oracle-6.5 | <6.8~ | 6.8~ |
| ubuntu/linux-raspi | <6.5.0-1018.21 | 6.5.0-1018.21 |
| ubuntu/linux-raspi | <6.8~ | 6.8~ |
| ubuntu/linux-raspi-5.4 | <6.8~ | 6.8~ |
| ubuntu/linux-riscv | <6.5.0-40.40.1 | 6.5.0-40.40.1 |
| ubuntu/linux-riscv | <6.8~ | 6.8~ |
| ubuntu/linux-riscv-5.15 | <6.8~ | 6.8~ |
| ubuntu/linux-riscv-6.5 | <6.5.0-40.40.1~22.04.1 | 6.5.0-40.40.1~22.04.1 |
| ubuntu/linux-riscv-6.5 | <6.8~ | 6.8~ |
| ubuntu/linux-starfive | <6.5.0-1015.16 | 6.5.0-1015.16 |
| ubuntu/linux-starfive | <6.8~ | 6.8~ |
| ubuntu/linux-starfive-6.5 | <6.5.0-1015.16~22.04.1 | 6.5.0-1015.16~22.04.1 |
| ubuntu/linux-starfive-6.5 | <6.8~ | 6.8~ |
| ubuntu/linux-xilinx-zynqmp | <6.8~ | 6.8~ |
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Reference Links
- https://git.kernel.org/stable/c/569156e4fa347237f8fa2a7e935d860109c55ac4
- https://git.kernel.org/stable/c/814af6b4e6000e574e74d92197190edf07cc3680
- https://git.kernel.org/stable/c/dc7eb8755797ed41a0d1b5c0c39df3c8f401b3d9
- https://launchpad.net/bugs/cve/CVE-2024-26618
- https://git.kernel.org/linus/dc7eb8755797ed41a0d1b5c0c39df3c8f401b3d9
- https://security-tracker.debian.org/tracker/CVE-2024-26618
- https://git.kernel.org/linus/dc7eb8755797ed41a0d1b5c0c39df3c8f401b3d9 (6.8-rc1)
- https://www.cve.org/CVERecord?id=CVE-2024-26618
- https://ubuntu.com/security/notices/USN-6818-1
- https://ubuntu.com/security/notices/USN-6819-1
- https://ubuntu.com/security/notices/USN-6818-2
- https://ubuntu.com/security/notices/USN-6819-2
- https://ubuntu.com/security/notices/USN-6819-3
- https://ubuntu.com/security/notices/USN-6818-3
- https://ubuntu.com/security/notices/USN-6818-4
- https://ubuntu.com/security/notices/USN-6819-4
- https://nvd.nist.gov/vuln/detail/CVE-2024-26618
- https://git.kernel.org/linus/5d0a8d2fba50e9c07cde4aad7fba28c008b07a5b
- https://ubuntu.com/security/CVE-2024-26618
Parent vulnerabilities
(Appears in the following advisories)
- agent/title
- agent/severity
- agent/first-publish-date
- agent/type
- collector/nvd-api
- source/NVD
- collector/epss-latest
- source/FIRST
- agent/epss
- collector/nvd-cve
- collector/launchpad-cve
- source/Launchpad
- agent/remedy
- agent/author
- agent/description
- agent/last-modified-date
- agent/event
- agent/references
- agent/tags
- collector/mitre-cve
- source/MITRE
- collector/security-tracker-debian
- source/Debian
- agent/software-canonical-lookup
- agent/softwarecombine
- collector/usn-cve
- source/Ubuntu
- package-manager/debian
- package-manager/ubuntu