net/rds: fix possible cp null dereference
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
CVE-2024-35902
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2024-35902
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "786854141057751bc08eb26f1b02e97c1631c8f4",
"lessThan": "d275de8ea7be3a453629fddae41d4156762e814c",
"versionType": "git"
},
{
"status": "affected",
"version": "997efea2bf3a4adb96c306b9ad6a91442237bf5b",
"lessThan": "bcd46782e2ec3825d10c1552fcb674d491cc09f9",
"versionType": "git"
},
{
"status": "affected",
"version": "9dfc15a10dfd44f8ff7f27488651cb5be6af83c2",
"lessThan": "cfb786b03b03c5ff38882bee38525eb9987e4d14",
"versionType": "git"
},
{
"status": "affected",
"version": "b562ebe21ed9adcf42242797dd6cb75beef12bf0",
"lessThan": "d49fac38479bfdaec52b3ea274d290c47a294029",
"versionType": "git"
},
{
"status": "affected",
"version": "998fd719e6d6468b930ac0c44552ea9ff8b07b80",
"lessThan": "cbaac2e5488ed54833897264a5ffb2a341a9f196",
"versionType": "git"
},
{
"status": "affected",
"version": "2b505d05280739ce31d5708da840f42df827cb85",
"lessThan": "92309bed3c5fbe2ccd4c45056efd42edbd06162d",
"versionType": "git"
},
{
"status": "affected",
"version": "c055fc00c07be1f0df7375ab0036cebd1106ed38",
"lessThan": "6794090c742008c53b344b35b021d4a3093dc50a",
"versionType": "git"
},
{
"status": "affected",
"version": "c055fc00c07be1f0df7375ab0036cebd1106ed38",
"lessThan": "62fc3357e079a07a22465b9b6ef71bb6ea75ee4b",
"versionType": "git"
},
{
"status": "affected",
"version": "907761307469adecb02461a14120e9a1812a5fb1",
"versionType": "git"
},
{
"status": "affected",
"version": "4.19.310",
"lessThan": "4.19.312",
"versionType": "semver"
},
{
"status": "affected",
"version": "5.4.272",
"lessThan": "5.4.274",
"versionType": "semver"
},
{
"status": "affected",
"version": "5.10.213",
"lessThan": "5.10.215",
"versionType": "semver"
},
{
"status": "affected",
"version": "5.15.152",
"lessThan": "5.15.154",
"versionType": "semver"
},
{
"status": "affected",
"version": "6.1.82",
"lessThan": "6.1.85",
"versionType": "semver"
},
{
"status": "affected",
"version": "6.6.22",
"lessThan": "6.6.26",
"versionType": "semver"
},
{
"status": "affected",
"version": "6.7.10",
"lessThan": "6.8",
"versionType": "semver"
}
],
"programFiles": [
"net/rds/rdma.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.8"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.8",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "4.19.312",
"versionType": "semver",
"lessThanOrEqual": "4.19.*"
},
{
"status": "unaffected",
"version": "5.4.274",
"versionType": "semver",
"lessThanOrEqual": "5.4.*"
},
{
"status": "unaffected",
"version": "5.10.215",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.154",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.85",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.26",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.8.5",
"versionType": "semver",
"lessThanOrEqual": "6.8.*"
},
{
"status": "unaffected",
"version": "6.9",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"net/rds/rdma.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2024-35902
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #26538 · Revision 1
- Added to Heist Feed
- Publisher date