7.8

CVE-2023-53680

NFSD: Avoid calling OPDESC() with ops->opnum == OP_ILLEGAL

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

NFSD: Avoid calling OPDESC() with ops->opnum == OP_ILLEGAL

OPDESC() simply indexes into nfsd4_ops[] by the op's operation
number, without range checking that value. It assumes callers are
careful to avoid calling it with an out-of-bounds opnum value.

nfsd4_decode_compound() is not so careful, and can invoke OPDESC()
with opnum set to OP_ILLEGAL, which is 10044 -- well beyond the end
of nfsd4_ops[].
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 4.14 < 5.10.220
Linux ≫ Linux Kernel Version >= 5.11 < 5.15.107
Linux ≫ Linux Kernel Version >= 5.16 < 6.1.24
Linux ≫ Linux Kernel Version >= 6.2 < 6.2.11
Linux ≫ Linux Kernel Version6.3 Updaterc1
Linux ≫ Linux Kernel Version6.3 Updaterc2
Linux ≫ Linux Kernel Version6.3 Updaterc3
Linux ≫ Linux Kernel Version6.3 Updaterc4
Linux ≫ Linux Kernel Version6.3 Updaterc5
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EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.02% 0.043
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 7.8 1.8 5.9
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-787 Out-of-bounds Write

The product writes data past the end, or before the beginning, of the intended buffer.