🔐 CVE Alert

CVE-2026-89673

UNKNOWN 0.0

nfsd: fix XDR padding calculation in ff_encode_getdeviceinfo

CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th

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.

Vendor linux
Product linux
Ecosystems
Industries
Technology
Published Sep 11, 2026
Last Updated Sep 14, 2026
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Affected Versions

Linux / Linux
efcae97fa425ca6db9d126e37daccf2d7225cb09 < 88bce7e326c368d7df15126ccac537e54bebd467 efcae97fa425ca6db9d126e37daccf2d7225cb09 < 74015b7be806ad9e21d46f7bd2831df280c6c783 efcae97fa425ca6db9d126e37daccf2d7225cb09 < 41ebca28e17f84293650598f86bd69532ec1a8e0 efcae97fa425ca6db9d126e37daccf2d7225cb09 < 62e5949f0dd5ec837af144860ff908369df4c7c9 efcae97fa425ca6db9d126e37daccf2d7225cb09 < 8b989aaec85e1293a871d602590c951fe44b8647
Linux / Linux
6.4.16 < 6.6.157 6.4.16 < 6.12.109 6.4.16 < 6.18.50 6.4.16 < 7.2.4 6.4.16 < 7.3-rc1

References

NVD ↗ CVE.org ↗ EPSS Data ↗
git.kernel.org: https://git.kernel.org/stable/c/88bce7e326c368d7df15126ccac537e54bebd467 git.kernel.org: https://git.kernel.org/stable/c/74015b7be806ad9e21d46f7bd2831df280c6c783 git.kernel.org: https://git.kernel.org/stable/c/41ebca28e17f84293650598f86bd69532ec1a8e0 git.kernel.org: https://git.kernel.org/stable/c/62e5949f0dd5ec837af144860ff908369df4c7c9 git.kernel.org: https://git.kernel.org/stable/c/8b989aaec85e1293a871d602590c951fe44b8647