CVE-2026-89528
HIGH
MEDIUM
Priority: 0.05
BB Relevance:
75/100
Published: 2026-09-11
Modified: 2026-10-30
First seen: 2026-10-30
Status: active
Attack Surface
Network
Low Complexity
No Auth
No Interaction
CVSS Vector Breakdown
AV:
Network
AC:
Low
PR:
None
UI:
None
S:
Unchanged
C:
None
I:
None
A:
High
Description
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.
Affected Software (7)
| Vendor | Product | Version |
|---|---|---|
| Linux | Linux | 026d958b38c628a1b4ced534808945365e2747a5 < 08aa4162df91880a79be744aaa9570b04d4875c4 |
| Linux | Linux | 026d958b38c628a1b4ced534808945365e2747a5 < beb4e9801f6362436102acc4cc5304b7324f9365 |
| Linux | Linux | 026d958b38c628a1b4ced534808945365e2747a5 < e70fdb121171c3eb0ac34eb545721828cd737717 |
| Linux | Linux | 026d958b38c628a1b4ced534808945365e2747a5 < 1a3af2262cb384112ef38632de4690682be528b4 |
| Linux | Linux | 026d958b38c628a1b4ced534808945365e2747a5 < 465f511f59a0fa7a80d5d1073c4b24f28ea38f58 |
| Linux | Linux | 026d958b38c628a1b4ced534808945365e2747a5 < 0ca487abb3bdf581851664b5db21f364caf57682 |
| Linux | Linux | 4.13 |