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()
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:
Vendor | Product | Version | CPE |
---|---|---|---|
linux | linux_kernel | * | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
[
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "unaffected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"net/rds/rdma.c"
],
"versions": [
{
"version": "786854141057",
"lessThan": "d275de8ea7be",
"status": "affected",
"versionType": "git"
},
{
"version": "997efea2bf3a",
"lessThan": "bcd46782e2ec",
"status": "affected",
"versionType": "git"
},
{
"version": "9dfc15a10dfd",
"lessThan": "cfb786b03b03",
"status": "affected",
"versionType": "git"
},
{
"version": "b562ebe21ed9",
"lessThan": "d49fac38479b",
"status": "affected",
"versionType": "git"
},
{
"version": "998fd719e6d6",
"lessThan": "cbaac2e5488e",
"status": "affected",
"versionType": "git"
},
{
"version": "2b505d052807",
"lessThan": "92309bed3c5f",
"status": "affected",
"versionType": "git"
},
{
"version": "c055fc00c07b",
"lessThan": "6794090c7420",
"status": "affected",
"versionType": "git"
},
{
"version": "c055fc00c07b",
"lessThan": "62fc3357e079",
"status": "affected",
"versionType": "git"
}
]
},
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "affected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"net/rds/rdma.c"
],
"versions": [
{
"version": "6.8",
"status": "affected"
},
{
"version": "0",
"lessThan": "6.8",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "4.19.312",
"lessThanOrEqual": "4.19.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "5.4.274",
"lessThanOrEqual": "5.4.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "5.10.215",
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "5.15.154",
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "6.1.85",
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "6.6.26",
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "6.8.5",
"lessThanOrEqual": "6.8.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "6.9",
"lessThanOrEqual": "*",
"status": "unaffected",
"versionType": "original_commit_for_fix"
}
]
}
]
git.kernel.org/stable/c/62fc3357e079a07a22465b9b6ef71bb6ea75ee4b
git.kernel.org/stable/c/6794090c742008c53b344b35b021d4a3093dc50a
git.kernel.org/stable/c/92309bed3c5fbe2ccd4c45056efd42edbd06162d
git.kernel.org/stable/c/bcd46782e2ec3825d10c1552fcb674d491cc09f9
git.kernel.org/stable/c/cbaac2e5488ed54833897264a5ffb2a341a9f196
git.kernel.org/stable/c/cfb786b03b03c5ff38882bee38525eb9987e4d14
git.kernel.org/stable/c/d275de8ea7be3a453629fddae41d4156762e814c
git.kernel.org/stable/c/d49fac38479bfdaec52b3ea274d290c47a294029
lists.debian.org/debian-lts-announce/2024/06/msg00017.html
lists.debian.org/debian-lts-announce/2024/06/msg00020.html