CVE-2026-89528
CVE CVE-2026-89528EUVD EUVD-2026-76434Published 2026-09-11T19:44:08.000ZLast changed 2026-09-13T06:30:25.000ZCVSS 7.5
What the advisory describes
In the Linux kernel, the following vulnerability has been resolved: svcrdma: Reject Read lists that exceed the page budget Individual Read segment lengths are validated at decode time, but nothing prevents a requester from sending multiple segments whose cumulative length exceeds the rq_pages array budget. When one segment fills the page array exactly, the runtime guard in svc_rdma_build_read_segment() is bypassed because len reaches zero. A subsequent segment then accesses the NULL sentinel slot at rq_pages[rq_maxpages], resulting in a NULL pointer dereference during DMA mapping. Accumulate pages across all Read segments and reject the message at decode time when the total would overflow the page budget.
Source: EUVD (ENISA), in the words of the advisory.
Products the advisory names
These come from the advisory itself, not from any check we performed.
- Linux — Linux patch: 0; 026d958b38c628a1b4ced534808945365e2747a5 <465f511f59a0fa7a80d5d1073c4b24f28ea38f58; patch: 6.18.51; 026d958b38c628a1b4ced534808945365e2747a5 <0ca487abb3bdf581851664b5db21f364caf57682; 026d958b38c628a1b4ced534808945365e2747a5 <1a3af2262cb384112ef38632de4690682be528b4; patch: 7.3-rc1; 4.13; patch: 7.2.4
The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.
Carried in the product catalogue
An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.
- Linux — Linux
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