Description (CNA)
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 (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 026d958b38c628a1b4ced534808945365e2747a5 before beb4e9801f6362436102acc4cc5304b7324f9365; affected 026d958b38c628a1b4ced534808945365e2747a5 before e70fdb121171c3eb0ac34eb545721828cd737717; affected 026d958b38c628a1b4ced534808945365e2747a5 before 1a3af2262cb384112ef38632de4690682be528b4; affected 026d958b38c628a1b4ced534808945365e2747a5 before 465f511f59a0fa7a80d5d1073c4b24f28ea38f58; affected 026d958b38c628a1b4ced534808945365e2747a5 before 0ca487abb3bdf581851664b5db21f364caf57682 |
| Linux / Linux | affected 4.13; unaffected 0 before 4.13; unaffected 6.6.160 through 6.6.*; unaffected 6.12.114 through 6.12.*; unaffected 6.18.51 through 6.18.*; unaffected 7.2.4 through 7.2.*; unaffected 7.3 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/beb4e9801f6362436102acc4cc5304b7324f9365
- https://git.kernel.org/stable/c/e70fdb121171c3eb0ac34eb545721828cd737717
- https://git.kernel.org/stable/c/1a3af2262cb384112ef38632de4690682be528b4
- https://git.kernel.org/stable/c/465f511f59a0fa7a80d5d1073c4b24f28ea38f58
- https://git.kernel.org/stable/c/0ca487abb3bdf581851664b5db21f364caf57682
ADP enrichment
No English description supplied.
No references supplied.