CVE-2026-89528High· 7.5▾ TwilightIn 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 mult…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 41.3 · likelihood 0.1 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake. The CVSS score shown above comes from the assigning CNA record, not NVD.
Exploit-prediction probability, daily snapshots since Sep 12.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
0.2%
— → 5.9
— → 7.5
none → high
7.5 → 5.9
high → medium
5.9 → 7.5
medium → high
7.5 → 5.9
high → medium
5.9 → 7
medium → high
7 → 7.5
Last analysed / modified upstream
0.2% → 0.7%
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.
Linux >= 026d958b38c628a1b4ced534808945365e2747a5 < beb4e9801f6362436102acc4cc5304b7324f9365Linux >= 026d958b38c628a1b4ced534808945365e2747a5 < e70fdb121171c3eb0ac34eb545721828cd737717Linux >= 026d958b38c628a1b4ced534808945365e2747a5 < 1a3af2262cb384112ef38632de4690682be528b4Linux >= 026d958b38c628a1b4ced534808945365e2747a5 < 465f511f59a0fa7a80d5d1073c4b24f28ea38f58Linux >= 026d958b38c628a1b4ced534808945365e2747a5 < 0ca487abb3bdf581851664b5db21f364caf57682Linux 4.13Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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