CVE-2026-89528 (GCVE-0-2026-89528)
Vulnerability from cvelistv5
Published
2026-09-11 19:44
Modified
2026-10-30 12:32
Severity ?
VLAI Severity ?
EPSS score ?
Summary
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.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Version: 026d958b38c628a1b4ced534808945365e2747a5 Version: 026d958b38c628a1b4ced534808945365e2747a5 Version: 026d958b38c628a1b4ced534808945365e2747a5 Version: 026d958b38c628a1b4ced534808945365e2747a5 Version: 026d958b38c628a1b4ced534808945365e2747a5 Version: 026d958b38c628a1b4ced534808945365e2747a5 |
||
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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