🔐 CVE Alert

CVE-2026-89673

UNKNOWN 0.0

nfsd: fix XDR padding calculation in ff_encode_getdeviceinfo

CVSS Score
0.0
EPSS Score
0.2%
EPSS Percentile
9th

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 Oct 24, 2026
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Affected Versions

Linux / Linux
3f1a2b0b2d575f39ff0bedb5411822fe7446a805 < 356decf074b82bac5564568203c12426dcea3470 19a648a07572c70fbe16faf0fafaf3dce9fd998a < 15460c8e6c9bc92cda8f68bc419ac082300ab3d6 6d08bd22fa2941a4d5ef45ed115dd00e484a93d7 < 9be67a6be48ddf2ebaa98c0df671690b8f9666e7 6372e2ee629894433fe6107d7048536a3280a284 < 88bce7e326c368d7df15126ccac537e54bebd467 6372e2ee629894433fe6107d7048536a3280a284 < 74015b7be806ad9e21d46f7bd2831df280c6c783 6372e2ee629894433fe6107d7048536a3280a284 < 41ebca28e17f84293650598f86bd69532ec1a8e0 6372e2ee629894433fe6107d7048536a3280a284 < 62e5949f0dd5ec837af144860ff908369df4c7c9 6372e2ee629894433fe6107d7048536a3280a284 < 8b989aaec85e1293a871d602590c951fe44b8647 82e36f0c287769a0430268739a71dbd56df0e679 6370e66a71c4869247f8f406c2a8b2c43df8998f 16282aeca44bfac0d1ac3be6cd1a719d6ff3d749 efcae97fa425ca6db9d126e37daccf2d7225cb09 64c959d59c24c661bd5338e4e6f1f703d7c309a1 5.10.195 < 5.10.270 5.15.132 < 5.15.221 6.1.53 < 6.1.188 4.14.326 < 4.15 4.19.295 < 4.20 5.4.257 < 5.5 6.4.16 < 6.5 6.5.3 < 6.6
Linux / Linux
6.6

References

NVD ↗ CVE.org ↗ EPSS Data ↗
git.kernel.org: https://git.kernel.org/stable/c/356decf074b82bac5564568203c12426dcea3470 git.kernel.org: https://git.kernel.org/stable/c/15460c8e6c9bc92cda8f68bc419ac082300ab3d6 git.kernel.org: https://git.kernel.org/stable/c/9be67a6be48ddf2ebaa98c0df671690b8f9666e7 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