NFSD: Avoid calling OPDESC() with ops->opnum == OP_ILLEGAL
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.5epss 0.3%
exploitation probability
0.3%top 77% of all CVEs
observed exploitation
nono source reports it
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[].
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products
Linux · LinuxReferences
https://git.kernel.org/stable/c/50827896c365e0f6c8b55ed56d444dafd87c92c5https://git.kernel.org/stable/c/804d8e0a6e54427268790472781e03bc243f4ee3https://git.kernel.org/stable/c/a64160124d5a078be0c380b1e8a0bad2d040d3a1https://git.kernel.org/stable/c/f352c41fa718482979e7e6b71b4da2b718e381cchttps://git.kernel.org/stable/c/ffcbcf087581ae68ddc0a21460f7ecd4315bdd0e