CVE-2026-31440dmaengine: idxd: Fix leaking event log memory
- 5.5MediumCVSS base score
- 0.12%Exploitation in 30 daysEPSS · top 98% 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: dmaengine: idxd: Fix leaking event log memory During the device remove process, the device is reset, causing the configuration registers to go back to their default state, which is zero. As the driver is checking if the event log support was enabled before deallocating, it will fail if a reset happened before. Do not check if the support was enabled, the check for 'idxd->evl' being valid (only allocated if the HW capability is available) is enough.
Timeline
ID reserved
By Linux
- 44 days later
· 44 days later
Published
- 7 months later
· 7 months 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 |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.12% · top 98% of all CVEs (15 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Affected products
- affected 244da66cda359227d80ccb41dbcb99da40eae186 – < 695b491dc3f20365fd5821f22e25dbe3c1c20cbc
- affected 244da66cda359227d80ccb41dbcb99da40eae186 – < d94f9b0ba28a205caf95902ee88b42bdb8af83d0
- affected 244da66cda359227d80ccb41dbcb99da40eae186 – < facd0012708e942fc12890708738aebde497564e
- affected 244da66cda359227d80ccb41dbcb99da40eae186 – < 9dfa00967e6ef43a9dd0887fe5c3a721a39da92e
- affected 244da66cda359227d80ccb41dbcb99da40eae186 – < ee66bc29578391c9b48523dc9119af67bd5c7c0f
- affected 6.4
- unaffected < 6.4
- unaffected 6.6.140 – ≤ 6.6.*
- unaffected 6.12.80 – ≤ 6.12.*
- unaffected 6.18.21 – ≤ 6.18.*
- unaffected 6.19.11 – ≤ 6.19.*
- unaffected 7.0 – ≤ *
References
References5
- https://git.kernel.org/stable/c/695b491dc3f20365fd5821f22e25dbe3c1c20cbc (opens in a new tab)
- https://git.kernel.org/stable/c/d94f9b0ba28a205caf95902ee88b42bdb8af83d0 (opens in a new tab)
- https://git.kernel.org/stable/c/facd0012708e942fc12890708738aebde497564e (opens in a new tab)
- https://git.kernel.org/stable/c/9dfa00967e6ef43a9dd0887fe5c3a721a39da92e (opens in a new tab)
- https://git.kernel.org/stable/c/ee66bc29578391c9b48523dc9119af67bd5c7c0f (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-2026-24768 (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-2026-31440)Record last updated .