CVE-2026-89904LoongArch: Fix acpi_package_ids[] array overflow
- 8.4HighCVSS base score
- 0.20%Exploitation in 30 daysEPSS · top 91% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
In the Linux kernel, the following vulnerability has been resolved: LoongArch: Fix acpi_package_ids[] array overflow With LoongArch virt machine, a typical setting is one core per socket, there will max 256 sockets (packages) on one VM. With PPTT acpi table, array acpi_package_ids[] will be overflowed. Here change the array size of acpi_package_ids[] with the max value of MAX_PACKAGES and KVM_MAX_VCPUS.
Timeline
ID reserved
By Linux
- 5 days later
· 5 days later
Published
- 33 days later
· 33 days later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High8.4 | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Received | 3.1 | High8.4 | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.20% · top 91% of all CVEs (12 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.4.
Affected products
- affected f18992be262d6515c94bf4bf6ce7598135076771 – < 0195e04b1eec8fb00e2db9c5e55655a3f5e76f60
- affected 4427a33faabb4b81511b99dfee18ce0a38b5b5df – < d3fd094c13c6d0b74f246461ca4cf427d539c8e8
- affected 4e8f58620f6717f72f3d88a2c8f25c0c656d0ba7 – < 6311b8c471afa33c18adbe4eb16f862936b71ca3
- affected 4e8f58620f6717f72f3d88a2c8f25c0c656d0ba7 – < 2a2367d46d7a4ee4122b7a86e57125542dbbe963
- affected 496bc868d9066e034787aa14b8ad6c23e77b51ef
- affected 6.12.101 – < 6.12.110
- affected 6.18.42 – < 6.18.51
- affected 7.1.6 – < 7.2
- affected 7.2
- unaffected < 7.2
- unaffected 6.12.110 – ≤ 6.12.*
- unaffected 6.18.51 – ≤ 6.18.*
- unaffected 7.2.5 – ≤ 7.2.*
- unaffected 7.3 – ≤ *
References
References4
- https://git.kernel.org/stable/c/0195e04b1eec8fb00e2db9c5e55655a3f5e76f60 (opens in a new tab)
- https://git.kernel.org/stable/c/d3fd094c13c6d0b74f246461ca4cf427d539c8e8 (opens in a new tab)
- https://git.kernel.org/stable/c/6311b8c471afa33c18adbe4eb16f862936b71ca3 (opens in a new tab)
- https://git.kernel.org/stable/c/2a2367d46d7a4ee4122b7a86e57125542dbbe963 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-80504 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-89904)Record last updated .