CVE-2026-53077

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-53077", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-06-09T07:44:35.383Z", "datePublished": "2026-06-24T16:30:17.972Z", "dateUpdated": "2026-08-05T12:33:10.122Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:33:10.122Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/rds: Restrict use of RDS/IB to the initial network namespace\n\nPrevent using RDS/IB in network namespaces other than the initial one.\nThe existing RDS/IB code will not work properly in non-initial network\nnamespaces."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:L - Reachability is through local syscalls: unshare a user/network namespace, create an AF_RDS socket, select RDS/IB with setsockopt, then bind/send and tear down the namespace. A remote peer alone cannot create the stale non-init namespace RDS/IB connection.\nAC:L - The attacker controls the namespace lifetime and socket operations needed to leave an RDS/IB connection with a stale net pointer, and syzbot reproduced the UAF. No hard-to-win race or victim state outside attacker control is required.\nPR:L - AF_RDS socket creation and SO_RDS_TRANSPORT do not require real init-namespace root, and the issue is reachable by an unprivileged local user via user namespaces. This is not an unauthenticated remote path, so low local privileges are required.\nUI:N - No victim action is needed after the attacker runs the local namespace and socket sequence. The later RDMA/RDS workqueue access occurs asynchronously in kernel context.\nS:U - The vulnerability corrupts/accesses kernel resources within the same kernel security authority. It is not a VM escape, IOMMU bypass, or other cross-authority boundary break.\nC:H - The bug is a slab use-after-free read of a freed net_namespace from RDS/IB asynchronous connection handling. Under the required kernel scoring guidance, UAFs are scored as high confidentiality impact because freed object reuse can expose kernel memory.\nI:H - Although the observed report is a UAF read, use-after-free bugs can generally be shaped through heap reuse into stronger memory corruption primitives. Per the required guidance and uncertainty rule, this warrants high integrity impact.\nA:H - Syzbot reports a KASAN slab-use-after-free in rds_conn_path_drop, and the same stale pointer access can trigger kernel oops/panic or destabilize RDS/RDMA workqueues. Kernel crash availability impact is high."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/rds/af_rds.c", "net/rds/ib.c"], "versions": [{"version": "d5a8ac28a7ff2f250d1bedbb6008dd2f6f6f1638", "lessThan": "3e7f14cd5a51533404e1ae4809caab46073fb5c7", "status": "affected", "versionType": "git"}, {"version": "d5a8ac28a7ff2f250d1bedbb6008dd2f6f6f1638", "lessThan": "3174fc703d081d2ca538b22fba734e3ad5b52322", "status": "affected", "versionType": "git"}, {"version": "d5a8ac28a7ff2f250d1bedbb6008dd2f6f6f1638", "lessThan": "c244b79adffad89a5173cf8bfaa06a6b40bbd09b", "status": "affected", "versionType": "git"}, {"version": "d5a8ac28a7ff2f250d1bedbb6008dd2f6f6f1638", "lessThan": "07035306bf722f4676a1aee35cbeb3732c76194e", "status": "affected", "versionType": "git"}, {"version": "d5a8ac28a7ff2f250d1bedbb6008dd2f6f6f1638", "lessThan": "fb407343c0c16e94584707b2dfdd350a5f81b000", "status": "affected", "versionType": "git"}, {"version": "d5a8ac28a7ff2f250d1bedbb6008dd2f6f6f1638", "lessThan": "a7494479757d60d2413bfaa087f8431a26eea032", "status": "affected", "versionType": "git"}, {"version": "d5a8ac28a7ff2f250d1bedbb6008dd2f6f6f1638", "lessThan": "b6a54f5e9ce9b97ae641855378d71c5154a085c0", "status": "affected", "versionType": "git"}, {"version": "d5a8ac28a7ff2f250d1bedbb6008dd2f6f6f1638", "lessThan": "ebf71dd4aff46e8e421d455db3e231ba43d2fa8a", "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/af_rds.c", "net/rds/ib.c"], "versions": [{"version": "4.3", "status": "affected"}, {"version": "0", "lessThan": "4.3", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.258", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.209", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.175", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.141", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.91", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.33", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0.10", "lessThanOrEqual": "7.0.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.3", "versionEndExcluding": "5.10.258"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.3", "versionEndExcluding": "5.15.209"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.3", "versionEndExcluding": "6.1.175"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.3", "versionEndExcluding": "6.6.141"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.3", "versionEndExcluding": "6.12.91"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.3", "versionEndExcluding": "6.18.33"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.3", "versionEndExcluding": "7.0.10"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.3", "versionEndExcluding": "7.1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/3e7f14cd5a51533404e1ae4809caab46073fb5c7"}, {"url": "https://git.kernel.org/stable/c/3174fc703d081d2ca538b22fba734e3ad5b52322"}, {"url": "https://git.kernel.org/stable/c/c244b79adffad89a5173cf8bfaa06a6b40bbd09b"}, {"url": "https://git.kernel.org/stable/c/07035306bf722f4676a1aee35cbeb3732c76194e"}, {"url": "https://git.kernel.org/stable/c/fb407343c0c16e94584707b2dfdd350a5f81b000"}, {"url": "https://git.kernel.org/stable/c/a7494479757d60d2413bfaa087f8431a26eea032"}, {"url": "https://git.kernel.org/stable/c/b6a54f5e9ce9b97ae641855378d71c5154a085c0"}, {"url": "https://git.kernel.org/stable/c/ebf71dd4aff46e8e421d455db3e231ba43d2fa8a"}], "title": "net/rds: Restrict use of RDS/IB to the initial network namespace", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["net/rds/af_rds.c", "net/rds/ib.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "3e7f14cd5a51533404e1ae4809caab46073fb5c7", "status": "affected", "version": "d5a8ac28a7ff2f250d1bedbb6008dd2f6f6f1638", "versionType": "git"}, {"lessThan": "3174fc703d081d2ca538b22fba734e3ad5b52322", "status": "affected", "version": "d5a8ac28a7ff2f250d1bedbb6008dd2f6f6f1638", "versionType": "git"}, {"lessThan": "c244b79adffad89a5173cf8bfaa06a6b40bbd09b", "status": "affected", "version": "d5a8ac28a7ff2f250d1bedbb6008dd2f6f6f1638", "versionType": "git"}, {"lessThan": "07035306bf722f4676a1aee35cbeb3732c76194e", "status": "affected", "version": "d5a8ac28a7ff2f250d1bedbb6008dd2f6f6f1638", "versionType": "git"}, {"lessThan": "fb407343c0c16e94584707b2dfdd350a5f81b000", "status": "affected", "version": "d5a8ac28a7ff2f250d1bedbb6008dd2f6f6f1638", "versionType": "git"}, {"lessThan": "a7494479757d60d2413bfaa087f8431a26eea032", "status": "affected", "version": "d5a8ac28a7ff2f250d1bedbb6008dd2f6f6f1638", "versionType": "git"}, {"lessThan": "b6a54f5e9ce9b97ae641855378d71c5154a085c0", "status": "affected", "version": "d5a8ac28a7ff2f250d1bedbb6008dd2f6f6f1638", "versionType": "git"}, {"lessThan": "ebf71dd4aff46e8e421d455db3e231ba43d2fa8a", "status": "affected", "version": "d5a8ac28a7ff2f250d1bedbb6008dd2f6f6f1638", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["net/rds/af_rds.c", "net/rds/ib.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "4.3"}, {"lessThan": "4.3", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.258", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.209", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.175", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.141", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.91", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.33", "versionType": "semver"}, {"lessThanOrEqual": "7.0.*", "status": "unaffected", "version": "7.0.10", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.1", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "5C1DDE7C-0105-4B52-A404-45D1D248A18D", "versionEndExcluding": "5.10.258", "versionStartIncluding": "4.3", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "919C10A9-7951-4A74-BADD-C135A0A8D8B4", "versionEndExcluding": "5.15.209", "versionStartIncluding": "5.11", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "92385813-D91D-480D-83A1-F423D2CBB2BA", "versionEndExcluding": "6.1.175", "versionStartIncluding": "5.16", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "97A9FFFA-22BB-4D5C-9790-5A2286E392F7", "versionEndExcluding": "6.6.141", "versionStartIncluding": "6.2", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "C918746B-DE6F-448F-A93E-A04C5481688D", "versionEndExcluding": "6.12.91", "versionStartIncluding": "6.7", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "96D99E49-380D-43AB-BDBA-25C3AD018A9C", "versionEndExcluding": "6.18.33", "versionStartIncluding": "6.13", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "A13475D2-59BF-4716-94B5-7C1D239A2CF4", "versionEndExcluding": "7.0.10", "versionStartIncluding": "6.19", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/rds: Restrict use of RDS/IB to the initial network namespace\n\nPrevent using RDS/IB in network namespaces other than the initial one.\nThe existing RDS/IB code will not work properly in non-initial network\nnamespaces."}], "id": "CVE-2026-53077", "lastModified": "2026-07-21T18:14:17.387", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}]}, "published": "2026-06-24T17:17:21.730", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/07035306bf722f4676a1aee35cbeb3732c76194e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/3174fc703d081d2ca538b22fba734e3ad5b52322"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/3e7f14cd5a51533404e1ae4809caab46073fb5c7"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a7494479757d60d2413bfaa087f8431a26eea032"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/b6a54f5e9ce9b97ae641855378d71c5154a085c0"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/c244b79adffad89a5173cf8bfaa06a6b40bbd09b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/ebf71dd4aff46e8e421d455db3e231ba43d2fa8a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/fb407343c0c16e94584707b2dfdd350a5f81b000"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: net/rds: Restrict use of RDS/IB to the initial network namespace", "id": "2492410", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2492410"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-280", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nnet/rds: Restrict use of RDS/IB to the initial network namespace\nPrevent using RDS/IB in network namespaces other than the initial one.\nThe existing RDS/IB code will not work properly in non-initial network\nnamespaces.", "A flaw was found in the Linux kernel's Reliable Datagram Sockets over InfiniBand (RDS/IB) component. This vulnerability allowed the use of RDS/IB in network namespaces other than the initial one, where the existing code would not function correctly. This improper operation could lead to unexpected system behavior or a denial of service."], "name": "CVE-2026-53077", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-06-24T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-53077\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-53077\nhttps://lore.kernel.org/linux-cve-announce/2026062406-CVE-2026-53077-a66c@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[d5a8ac28a7ff2f250d1bedbb6008dd2f6f6f1638,3e7f14cd5a51533404e1ae4809caab46073fb5c7)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[d5a8ac28a7ff2f250d1bedbb6008dd2f6f6f1638,3174fc703d081d2ca538b22fba734e3ad5b52322)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[d5a8ac28a7ff2f250d1bedbb6008dd2f6f6f1638,c244b79adffad89a5173cf8bfaa06a6b40bbd09b)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[d5a8ac28a7ff2f250d1bedbb6008dd2f6f6f1638,07035306bf722f4676a1aee35cbeb3732c76194e)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[d5a8ac28a7ff2f250d1bedbb6008dd2f6f6f1638,fb407343c0c16e94584707b2dfdd350a5f81b000)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[d5a8ac28a7ff2f250d1bedbb6008dd2f6f6f1638,a7494479757d60d2413bfaa087f8431a26eea032)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[d5a8ac28a7ff2f250d1bedbb6008dd2f6f6f1638,b6a54f5e9ce9b97ae641855378d71c5154a085c0)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[d5a8ac28a7ff2f250d1bedbb6008dd2f6f6f1638,ebf71dd4aff46e8e421d455db3e231ba43d2fa8a)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "4.3"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,4.3)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.10.258,5.11.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.15.209,5.16.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.1.175,6.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.141,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.91,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.0.10,7.1.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.1,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-06-24T22:00:04.721507+00:00", "updated": "2026-08-12T07:00:12.553578+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}