CVSS 5.5 · Medium EPSS 0,22%
Kerentanan NULL Pointer Dereference pada linux kernel, debian linux. Skor CVSS 3.1 5.5 (Medium) menurut NVD.
In the Linux kernel, the following vulnerability has been resolved: net/rds: fix possible cp null dereference cp might be null, calling cp->cp_conn would produce null dereference [Simon Horman adds:] Analysis: * cp is a parameter of __rds_rdma_map and is not reassigned. * The following call-sites pass a NULL cp argument to __rds_rdma_map() - rds_get_mr() - rds_get_mr_for_dest * Prior to the code above, the following assumes that cp may be NULL (which is indicative, but could itself be unnecessary) trans_private = rs->rs_transport->get_mr( sg, nents, rs, &mr->r_key, cp ? cp->cp_conn : NULL, args->vec.addr, args->vec.bytes, need_odp ? ODP_ZEROBASED : ODP_NOT_NEEDED); * The code modified by this patch is guarded by IS_ERR(trans_private), where trans_private is assigned as per the previous point in this analysis. The only implementation of get_mr that I could locate is rds_ib_get_mr() which can return an ERR_PTR if the conn (4th) argument is NULL. * ret is set to PTR_ERR(trans_private). rds_ib_get_mr can return ERR_PTR(-ENODEV) if the conn (4th) argument is NULL. Thus ret may be -ENODEV in which case the code in question will execute. Conclusion: * cp may be NULL at the point where this patch adds a check; this patch does seem to address a possible bug
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
· uraikan di kalkulator | Vendor | Produk | Versi terdampak |
|---|---|---|
| linux | linux kernel | Versi 4.19.310 hingga sebelum 4.19.312 |
| linux | linux kernel | Versi 5.4.272 hingga sebelum 5.7.274 |
| linux | linux kernel | Versi 5.10.213 hingga sebelum 5.10.215 |
| linux | linux kernel | Versi 5.15.152 hingga sebelum 5.15.154 |
| linux | linux kernel | Versi 6.1.82 hingga sebelum 6.1.85 |
| linux | linux kernel | Versi 6.6.22 hingga sebelum 6.6.26 |
| linux | linux kernel | Versi 6.7.10 hingga sebelum 6.8.5 |
| linux | linux kernel | Versi 6.9 rc1 |
| linux | linux kernel | Versi 6.9 rc2 |
| debian | debian linux | Versi 10.0 |