Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: scsi: ibmvfc: Fix OOB access in ibmvfc_discover_targets_done() A malicious or compromised VIO server can return a num_written value in the discover targets MAD response that exceeds max_targets. This value is stored directly in vhost->num_targets without validation, and is then used as the loop bound in ibmvfc_alloc_targets() to index into disc_buf[], which is only allocated for max_targets entries. Indices at or beyond max_targets access kernel memory outside the DMA-coherent allocation. The out-of-bounds data is subsequently embedded in Implicit Logout and PLOGI MADs that are sent back to the VIO server, leaking kernel memory. Fix by clamping num_written to max_targets before storing it.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 072b91f9c6510d0ec4a49d07dbc318760c7da7b3 before d842348f8a00d5b1d7358f207eb34ffcf5b16df3; affected 072b91f9c6510d0ec4a49d07dbc318760c7da7b3 before a007246cb6c9ebdc93dafbf63cc2d43d98f402cc; affected 072b91f9c6510d0ec4a49d07dbc318760c7da7b3 before 394a1cac3c12fdd7d77f19ccfd222ab5ff87ef89; affected 072b91f9c6510d0ec4a49d07dbc318760c7da7b3 before 4ed727e35b0ab17d3eeeb1e8023768396e2be161; affected 072b91f9c6510d0ec4a49d07dbc318760c7da7b3 before d1466bf991b2343cf2ba8336e440c8faf3cbb780; affected 072b91f9c6510d0ec4a49d07dbc318760c7da7b3 before 786f10b1966e485046839f992e89f2c18cbd1983; affected 072b91f9c6510d0ec4a49d07dbc318760c7da7b3 before bae4df0a643fa7f84663473aa3082a9c2ed139db; affected 072b91f9c6510d0ec4a49d07dbc318760c7da7b3 before 61d099ac4a7a8fb11ebdb6e2ec8d77f38e77362f |
| Linux / Linux | affected 2.6.27; unaffected 0 before 2.6.27; unaffected 5.10.253 through 5.10.*; unaffected 5.15.203 through 5.15.*; unaffected 6.1.168 through 6.1.*; unaffected 6.6.131 through 6.6.*; unaffected 6.12.80 through 6.12.*; unaffected 6.18.21 through 6.18.*; unaffected 6.19.11 through 6.19.*; unaffected 7.0 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/d842348f8a00d5b1d7358f207eb34ffcf5b16df3
- https://git.kernel.org/stable/c/a007246cb6c9ebdc93dafbf63cc2d43d98f402cc
- https://git.kernel.org/stable/c/394a1cac3c12fdd7d77f19ccfd222ab5ff87ef89
- https://git.kernel.org/stable/c/4ed727e35b0ab17d3eeeb1e8023768396e2be161
- https://git.kernel.org/stable/c/d1466bf991b2343cf2ba8336e440c8faf3cbb780
- https://git.kernel.org/stable/c/786f10b1966e485046839f992e89f2c18cbd1983
- https://git.kernel.org/stable/c/bae4df0a643fa7f84663473aa3082a9c2ed139db
- https://git.kernel.org/stable/c/61d099ac4a7a8fb11ebdb6e2ec8d77f38e77362f
ADP enrichment
No English description supplied.
No references supplied.