CVE-2026-72045

Summary

In the Linux kernel, the following vulnerability has been resolved:

octeontx2-af: cn10k: restrict VF LMTLINE sharing to its own PF

rvu_mbox_handler_lmtst_tbl_setup() uses req->base_pcifunc as a direct index into the LMT map table to read another function's LMTLINE physical base address and copy it into the caller's own LMT map table entry. The mailbox dispatcher authenticates req->hdr.pcifunc from the IRQ source, but req->base_pcifunc is a separate payload field and is not sanitized.

Reject the request with -EPERM when a VF caller's base_pcifunc is not a valid function under its own PF. is_pf_func_valid() bounds the FUNC field to the PF's configured VF count, keeping the computed index inside the caller's own slot block.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux893ae97214c385be02f8ec097298cc48c7f0d905 < e9c5b03208507dd6d58b0c23a2c60b5c2f4c1b11affected
LinuxLinux893ae97214c385be02f8ec097298cc48c7f0d905 < 54535692bec9ef464adc714108eb19e49e38b5a2affected
LinuxLinux893ae97214c385be02f8ec097298cc48c7f0d905 < c73b8795b45f4ad5a95120d2e9b435ea4616e08eaffected
LinuxLinux893ae97214c385be02f8ec097298cc48c7f0d905 < 59da37fee81a8d76079313348ca13c5bc90dd6aeaffected
LinuxLinux893ae97214c385be02f8ec097298cc48c7f0d905 < 8cdcf3d2caacdee7ddd363705fb4d93b0c1a0915affected
LinuxLinux5.14affected
LinuxLinux0 < 5.14unaffected
LinuxLinux6.6.148 <= 6.6.*unaffected
LinuxLinux6.12.101 <= 6.12.*unaffected
LinuxLinux6.18.42 <= 6.18.*unaffected
LinuxLinux7.1.5 <= 7.1.*unaffected
LinuxLinux7.2 <= *unaffected

Weaknesses

References