net/rds: fix possible cp null dereference

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2024-35902
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2024-05-19 09:15:11 UTC
Updated2026-05-12 12:16:40 UTC
DescriptionIn 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

Risk And Classification

Primary CVSS: v3.1 5.5 MEDIUM from [email protected]

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Problem Types: CWE-476

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 786854141057751bc08eb26f1b02e97c1631c8f4 d275de8ea7be3a453629fddae41d4156762e814c git Not specified
CNA Linux Linux affected 997efea2bf3a4adb96c306b9ad6a91442237bf5b bcd46782e2ec3825d10c1552fcb674d491cc09f9 git Not specified
CNA Linux Linux affected 9dfc15a10dfd44f8ff7f27488651cb5be6af83c2 cfb786b03b03c5ff38882bee38525eb9987e4d14 git Not specified
CNA Linux Linux affected b562ebe21ed9adcf42242797dd6cb75beef12bf0 d49fac38479bfdaec52b3ea274d290c47a294029 git Not specified
CNA Linux Linux affected 998fd719e6d6468b930ac0c44552ea9ff8b07b80 cbaac2e5488ed54833897264a5ffb2a341a9f196 git Not specified
CNA Linux Linux affected 2b505d05280739ce31d5708da840f42df827cb85 92309bed3c5fbe2ccd4c45056efd42edbd06162d git Not specified
CNA Linux Linux affected c055fc00c07be1f0df7375ab0036cebd1106ed38 6794090c742008c53b344b35b021d4a3093dc50a git Not specified
CNA Linux Linux affected c055fc00c07be1f0df7375ab0036cebd1106ed38 62fc3357e079a07a22465b9b6ef71bb6ea75ee4b git Not specified
CNA Linux Linux affected 907761307469adecb02461a14120e9a1812a5fb1 git Not specified
CNA Linux Linux affected 6.8 Not specified
CNA Linux Linux unaffected 6.8 semver Not specified
CNA Linux Linux unaffected 4.19.312 4.19.* semver Not specified
CNA Linux Linux unaffected 5.4.274 5.4.* semver Not specified
CNA Linux Linux unaffected 5.10.215 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.154 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.85 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.26 6.6.* semver Not specified
CNA Linux Linux unaffected 6.8.5 6.8.* semver Not specified
CNA Linux Linux unaffected 6.9 * original_commit_for_fix Not specified
ADP Siemens SIMATIC S7-1500 TM MFP - GNU/Linux Subsystem affected * custom Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/cbaac2e5488ed54833897264a5ffb2a341a9f196 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
lists.debian.org/debian-lts-announce/2024/06/msg00017.html af854a3a-2127-422b-91ae-364da2661108 lists.debian.org Mailing List
git.kernel.org/stable/c/bcd46782e2ec3825d10c1552fcb674d491cc09f9 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
cert-portal.siemens.com/productcert/html/ssa-265688.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
git.kernel.org/stable/c/6794090c742008c53b344b35b021d4a3093dc50a af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
git.kernel.org/stable/c/62fc3357e079a07a22465b9b6ef71bb6ea75ee4b af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
git.kernel.org/stable/c/d275de8ea7be3a453629fddae41d4156762e814c af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
git.kernel.org/stable/c/d49fac38479bfdaec52b3ea274d290c47a294029 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
git.kernel.org/stable/c/cfb786b03b03c5ff38882bee38525eb9987e4d14 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
git.kernel.org/stable/c/92309bed3c5fbe2ccd4c45056efd42edbd06162d af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
lists.debian.org/debian-lts-announce/2024/06/msg00020.html af854a3a-2127-422b-91ae-364da2661108 lists.debian.org Mailing List
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