{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2023-53179", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-09-15T13:59:19.065Z", "datePublished": "2025-09-15T14:04:26.782Z", "dateUpdated": "2026-08-05T09:12:57.491Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T09:12:57.491Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: ipset: add the missing IP_SET_HASH_WITH_NET0 macro for ip_set_hash_netportnet.c\n\nThe missing IP_SET_HASH_WITH_NET0 macro in ip_set_hash_netportnet can\nlead to the use of wrong `CIDR_POS(c)` for calculating array offsets,\nwhich can lead to integer underflow. As a result, it leads to slab\nout-of-bound access.\nThis patch adds back the IP_SET_HASH_WITH_NET0 macro to\nip_set_hash_netportnet to address the issue." } ], "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 - The bug is triggered via nfnetlink netlink messages (ipset create/add on hash:net,port,net), which require a local syscall path (sendto/netlink_sendmsg), not remote packet processing.\nAC:L - An attacker can reliably trigger the OOB by creating a hash:net,port,net set and adding an entry with CIDR 0; no race or victim-controlled state is required, and on amd64 the underflow consistently indexes at -1.\nPR:L - nfnetlink only requires CAP_NET_ADMIN via netlink_net_capable over the network namespace's user_ns, which an unprivileged local user can obtain with user+network namespaces (unshare -Urn).\nUI:N - Exploitation is fully attacker-driven through netlink ipset commands and does not require any victim action.\nS:U - This is a standard in-kernel privilege escalation within the same OS security authority; it does not cross VM, IOMMU, or other security boundaries.\nC:H - The OOB increment/decrement of adjacent slab objects can corrupt length/pointer fields to obtain out-of-bounds read primitives, enabling arbitrary kernel memory disclosure.\nI:H - Controlled OOB ++/-- on slab memory adjacent to h->nets provides a write primitive that the discoverer assessed as likely exploitable for privilege escalation and arbitrary modification.\nA:H - The out-of-bounds access can crash the kernel (UBSAN/panic demonstrated in the public PoC), so 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/netfilter/ipset/ip_set_hash_netportnet.c" ], "versions": [ { "version": "0d5d0b5c41f766355f2b42c47d13ea001f754c7d", "lessThan": "7935b636dd693dfe4483cfef4a1e91366c8103fa", "status": "affected", "versionType": "git" }, { "version": "cb3e590df429ce151d5041884a4947099b8ad6a7", "lessThan": "e632d09dffc68b9602d6893a99bfe3001d36cefc", "status": "affected", "versionType": "git" }, { "version": "886503f34d63e681662057448819edb5b1057a97", "lessThan": "109e830585e89a03d554bf8ad0e668630d0a6260", "status": "affected", "versionType": "git" }, { "version": "886503f34d63e681662057448819edb5b1057a97", "lessThan": "83091f8ac03f118086596f17c9a52d31d6ca94b3", "status": "affected", "versionType": "git" }, { "version": "886503f34d63e681662057448819edb5b1057a97", "lessThan": "a9e6142e5f8f6ac7d1bca45c1b2b13b084ea9e14", "status": "affected", "versionType": "git" }, { "version": "886503f34d63e681662057448819edb5b1057a97", "lessThan": "7ca0706c68adadf86a36b60dca090f5e9481e808", "status": "affected", "versionType": "git" }, { "version": "886503f34d63e681662057448819edb5b1057a97", "lessThan": "d59b6fc405549f7caf31f6aa5da1d6bef746b166", "status": "affected", "versionType": "git" }, { "version": "886503f34d63e681662057448819edb5b1057a97", "lessThan": "d95c8420efe684b964e3aa28108e9a354bcd7225", "status": "affected", "versionType": "git" }, { "version": "886503f34d63e681662057448819edb5b1057a97", "lessThan": "050d91c03b28ca479df13dfb02bcd2c60dd6a878", "status": "affected", "versionType": "git" }, { "version": "186642845b02e1a7944ef33c3a3ac41eba77517f", "status": "affected", "versionType": "git" }, { "version": "919560afc21f91ca352a20394d5249aba1799690", "status": "affected", "versionType": "git" }, { "version": "4.14.84", "lessThan": "4.14.326", "status": "affected", "versionType": "semver" }, { "version": "4.19.5", "lessThan": "4.19.295", "status": "affected", "versionType": "semver" }, { "version": "4.4.165", "lessThan": "4.5", "status": "affected", "versionType": "semver" }, { "version": "4.9.141", "lessThan": "4.10", "status": "affected", "versionType": "semver" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "net/netfilter/ipset/ip_set_hash_netportnet.c" ], "versions": [ { "version": "4.20", "status": "affected" }, { "version": "0", "lessThan": "4.20", "status": "unaffected", "versionType": "semver" }, { "version": "4.14.326", "lessThanOrEqual": "4.14.*", "status": "unaffected", "versionType": "semver" }, { "version": "4.19.295", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.257", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.195", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.132", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.53", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.4.16", "lessThanOrEqual": "6.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.5.3", "lessThanOrEqual": "6.5.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6", "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": "4.14.84", "versionEndExcluding": "4.14.326" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.19.5", "versionEndExcluding": "4.19.295" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.20", "versionEndExcluding": "5.4.257" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.20", "versionEndExcluding": "5.10.195" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.20", "versionEndExcluding": "5.15.132" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.20", "versionEndExcluding": "6.1.53" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.20", "versionEndExcluding": "6.4.16" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.20", "versionEndExcluding": "6.5.3" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.20", "versionEndExcluding": "6.6" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.4.165" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.9.141" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/7935b636dd693dfe4483cfef4a1e91366c8103fa" }, { "url": "https://git.kernel.org/stable/c/e632d09dffc68b9602d6893a99bfe3001d36cefc" }, { "url": "https://git.kernel.org/stable/c/109e830585e89a03d554bf8ad0e668630d0a6260" }, { "url": "https://git.kernel.org/stable/c/83091f8ac03f118086596f17c9a52d31d6ca94b3" }, { "url": "https://git.kernel.org/stable/c/a9e6142e5f8f6ac7d1bca45c1b2b13b084ea9e14" }, { "url": "https://git.kernel.org/stable/c/7ca0706c68adadf86a36b60dca090f5e9481e808" }, { "url": "https://git.kernel.org/stable/c/d59b6fc405549f7caf31f6aa5da1d6bef746b166" }, { "url": "https://git.kernel.org/stable/c/d95c8420efe684b964e3aa28108e9a354bcd7225" }, { "url": "https://git.kernel.org/stable/c/050d91c03b28ca479df13dfb02bcd2c60dd6a878" } ], "title": "netfilter: ipset: add the missing IP_SET_HASH_WITH_NET0 macro for ip_set_hash_netportnet.c", 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