CVE-2022-48829: critical vulnerability in Linux
NFSD: Fix NFSv3 SETATTR/CREATE's handling of large file sizes
Published · Updated
28Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 9.1epss 0.7%
exploitation probability
0.7%top 50% of all CVEs
observed exploitation
nono source reports it
In the Linux kernel, the following vulnerability has been resolved:
NFSD: Fix NFSv3 SETATTR/CREATE's handling of large file sizes
iattr::ia_size is a loff_t, so these NFSv3 procedures must be
careful to deal with incoming client size values that are larger
than s64_max without corrupting the value.
Silently capping the value results in storing a different value
than the client passed in which is unexpected behavior, so remove
the min_t() check in decode_sattr3().
Note that RFC 1813 permits only the WRITE procedure to return
NFS3ERR_FBIG. We believe that NFSv3 reference implementations
also return NFS3ERR_FBIG when ia_size is too large.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Affected products
Linux · LinuxRelated CVEs — Linux
In the same product, most dangerous first.
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References
https://cert-portal.siemens.com/productcert/html/ssa-265688.htmlhttps://cert-portal.siemens.com/productcert/html/ssa-355557.htmlhttps://git.kernel.org/stable/c/37f2d2cd8eadddbbd9c7bda327a9393399b2f89bhttps://git.kernel.org/stable/c/72c14aed6838b5d90b4dd926b6a339b34bb02e08https://git.kernel.org/stable/c/a231ae6bb50e7c0a9e9efd7b0d10687f1d71b3a3https://git.kernel.org/stable/c/a648fdeb7c0e17177a2280344d015dba3fbe3314https://git.kernel.org/stable/c/aa9051ddb4b378bd22e72a67bc77b9fc1482c5f0