CVE-2026-68418RDMA/irdma: Prevent user-triggered null deref on QP create
- —Not scoredno CVSS score yet
- 0.16%Exploitation in 30 daysEPSS · top 95% 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: RDMA/irdma: Prevent user-triggered null deref on QP create Previously, the user QP creation path would only attempt to populate iwqp->iwpbl if the user-provided req.user_wqe_bufs field was non-zero. The problem is that iwqp->iwpbl is unconditionally dereferenced later on in irdma_setup_virt_qp. While there was a check for iwqp->iwpbl != NULL, this check would only occur if req.user_wqe_bufs was non-zero. The end result is that a user could send a zero user_wqe_bufs value and trigger a null ptr deref. Fix this by unconditionally calling irdma_get_pbl and bailing if it fails, similar to the CQ and SRQ paths.
Timeline
ID reserved
By Linux
- 11 days later
· 11 days later
Published
- 3 months later
· 3 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
No CVSS score yet: neither the CNA, CISA nor NVD has scored this CVE. NVD status: Received.
- EPSS (exploitation in 30 days)
- 0.16% · top 95% of all CVEs (15 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected b48c24c2d710cf34810c555dcef883a3d35a9c08 – < 4e75028c000e9560a7ff66a23d7cd872a967ab7e
- affected b48c24c2d710cf34810c555dcef883a3d35a9c08 – < d52ff592abfcd56234f266aa245c489f70b1c554
- affected b48c24c2d710cf34810c555dcef883a3d35a9c08 – < ad68e0b759f9569f0dfea84f035c91eadb979802
- affected b48c24c2d710cf34810c555dcef883a3d35a9c08 – < ec675b4cdfd378d8c9dd8c93126c024f2469bd79
- affected b48c24c2d710cf34810c555dcef883a3d35a9c08 – < 728211c815f6eef28dd3df2a5b6297483185aa20
- affected b48c24c2d710cf34810c555dcef883a3d35a9c08 – < b9b0889071569d43623c260074e159cd8f26adb1
- affected 5.14
- unaffected < 5.14
- unaffected 6.1.191 – ≤ 6.1.*
- unaffected 6.6.160 – ≤ 6.6.*
- unaffected 6.12.114 – ≤ 6.12.*
- unaffected 6.18.42 – ≤ 6.18.*
- unaffected 7.1.6 – ≤ 7.1.*
- unaffected 7.2 – ≤ *
References
References6
- https://git.kernel.org/stable/c/4e75028c000e9560a7ff66a23d7cd872a967ab7e (opens in a new tab)
- https://git.kernel.org/stable/c/d52ff592abfcd56234f266aa245c489f70b1c554 (opens in a new tab)
- https://git.kernel.org/stable/c/ad68e0b759f9569f0dfea84f035c91eadb979802 (opens in a new tab)
- https://git.kernel.org/stable/c/ec675b4cdfd378d8c9dd8c93126c024f2469bd79 (opens in a new tab)
- https://git.kernel.org/stable/c/728211c815f6eef28dd3df2a5b6297483185aa20 (opens in a new tab)
- https://git.kernel.org/stable/c/b9b0889071569d43623c260074e159cd8f26adb1 (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-2026-55604 (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-2026-68418)Record last updated .