GHSA-fpgc-gpfg-74f9unknown
In the Linux kernel, the following vulnerability has been resolved: nfsd: fix XDR padding...
🔗 CVE IDs covered (1)
📋 Description
In the Linux kernel, the following vulnerability has been resolved:
nfsd: fix XDR padding calculation in ff_encode_getdeviceinfo
nfsd4_ff_encode_getdeviceinfo() computes the da_addr_body reservation as 16 + netid_len + addr_len, but the subsequent xdr_encode_opaque() calls emit 8 + round_up(netid_len, 4) + round_up(addr_len, 4) bytes. The mismatch means the declared da_addr_body length exceeds the actual encoded data by 2-8 bytes on every flexfile GETDEVICEINFO reply, leaking stale reply-page content to the client and mis-aligning the subsequent version list decode.
Use xdr_align_size() for each string length to match what xdr_encode_opaque() actually writes.
🔗 References (7)
- https://nvd.nist.gov/vuln/detail/CVE-2026-89673
- https://git.kernel.org/stable/c/41ebca28e17f84293650598f86bd69532ec1a8e0
- https://git.kernel.org/stable/c/62e5949f0dd5ec837af144860ff908369df4c7c9
- https://git.kernel.org/stable/c/74015b7be806ad9e21d46f7bd2831df280c6c783
- https://git.kernel.org/stable/c/8b989aaec85e1293a871d602590c951fe44b8647
- https://git.kernel.org/stable/c/88bce7e326c368d7df15126ccac537e54bebd467
- https://github.com/advisories/GHSA-fpgc-gpfg-74f9