nvmet-tcp: add bounds checks in nvmet_tcp_build_pdu_iovec
28Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 9.8epss 0.4%
exploitation probability
0.4%top 67% of all CVEs
observed exploitation
nono source reports it
In the Linux kernel, the following vulnerability has been resolved:
nvmet-tcp: add bounds checks in nvmet_tcp_build_pdu_iovec
nvmet_tcp_build_pdu_iovec() could walk past cmd->req.sg when a PDU
length or offset exceeds sg_cnt and then use bogus sg->length/offset
values, leading to _copy_to_iter() GPF/KASAN. Guard sg_idx, remaining
entries, and sg->length/offset before building the bvec.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products
Linux · LinuxReferences
https://cert-portal.siemens.com/productcert/html/ssa-253495.htmlhttps://git.kernel.org/stable/c/0b9981751be14b59b4473383c731c833738aebdbhttps://git.kernel.org/stable/c/1385be357e8acd09b36e026567f3a9d5c61139dehttps://git.kernel.org/stable/c/19672ae68d52ff75347ebe2420dde1b07adca09fhttps://git.kernel.org/stable/c/42afe8ed8ad2de9c19457156244ef3e1eca94b5dhttps://git.kernel.org/stable/c/52a0a98549344ca20ad81a4176d68d28e3c05a5chttps://git.kernel.org/stable/c/ab200d71553bdcf4de554a5985b05b2dd606bc57https://git.kernel.org/stable/c/dca1a6ba0da9f472ef040525fab10fd9956db59f