- 8.8HighCVSS base score
- 0.13%Exploitation in 30 daysEPSS · top 97% 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: powerpc/iommu: Fix the overflow validation in iommu_tce_check_ioba The commit b1af23d836f8 ("KVM: PPC: iommu: Unify TCE checking") unified IOBA parameter checking across KVM and VFIO into iommu_tce_check_ioba(). While doing so, the passed in argument npages is ignored and constant value '1' is used leaving out a possible overflow as the callers can legitimately be using npages > 1 for H_STUFF_TCE or H_PUT_TCE_INDIRECT cases. Fix this by accounting for 'npages', checking for arithmetic overflow, and verifying that the entire requested range (ioba - offset + npages) does not exceed the table capacity 'size'.
Timeline
ID reserved
By Linux
- 11 days later
· 11 days later
Published
- 13 days later
· 13 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 | High8.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H |
| NVDNVD · Received | 3.1 | High8.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.13% · top 97% of all CVEs (11 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.8.
Affected products
- affected b1af23d836f811137d504d14d4cbdd01929dec34 – < 98d8dcc4ebd10523507d4478e148809a7771a213
- affected b1af23d836f811137d504d14d4cbdd01929dec34 – < 9fd9c9bbb05417f468a11fb6d145d7ff61f4a868
- affected b1af23d836f811137d504d14d4cbdd01929dec34 – < 3776bf56e06980e8a12c8c0565d9e6ac44965f03
- affected b1af23d836f811137d504d14d4cbdd01929dec34 – < d6a1779129d936bc1fbab80181165da544eab736
- affected b1af23d836f811137d504d14d4cbdd01929dec34 – < d48ceb6e1a6915c7bac4f902554a1047365cdff2
- affected b1af23d836f811137d504d14d4cbdd01929dec34 – < 0543813753ef5cfbd6fa96694f7acf783fa01af7
- affected b1af23d836f811137d504d14d4cbdd01929dec34 – < 314091243159f8e3749bc719bb129f423f72fd86
- affected b1af23d836f811137d504d14d4cbdd01929dec34 – < 0b271f7d7f5ed45bc498a03ce0aa9cfd8402fc71
- affected 4.12
- unaffected < 4.12
- unaffected 5.10.271 – ≤ 5.10.*
- unaffected 5.15.222 – ≤ 5.15.*
- unaffected 6.1.189 – ≤ 6.1.*
- unaffected 6.6.158 – ≤ 6.6.*
- unaffected 6.12.112 – ≤ 6.12.*
- unaffected 6.18.54 – ≤ 6.18.*
- unaffected 7.2.8 – ≤ 7.2.*
- unaffected 7.3 – ≤ *
References
References8
- https://git.kernel.org/stable/c/98d8dcc4ebd10523507d4478e148809a7771a213 (opens in a new tab)
- https://git.kernel.org/stable/c/9fd9c9bbb05417f468a11fb6d145d7ff61f4a868 (opens in a new tab)
- https://git.kernel.org/stable/c/3776bf56e06980e8a12c8c0565d9e6ac44965f03 (opens in a new tab)
- https://git.kernel.org/stable/c/d6a1779129d936bc1fbab80181165da544eab736 (opens in a new tab)
- https://git.kernel.org/stable/c/d48ceb6e1a6915c7bac4f902554a1047365cdff2 (opens in a new tab)
- https://git.kernel.org/stable/c/0543813753ef5cfbd6fa96694f7acf783fa01af7 (opens in a new tab)
- https://git.kernel.org/stable/c/314091243159f8e3749bc719bb129f423f72fd86 (opens in a new tab)
- https://git.kernel.org/stable/c/0b271f7d7f5ed45bc498a03ce0aa9cfd8402fc71 (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-2026-93210 (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-2026-98282)Record last updated .