{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2023-52522", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-02-20T12:30:33.317Z", "datePublished": "2024-03-02T21:52:29.710Z", "dateUpdated": "2026-08-05T09:10:22.569Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T09:10:22.569Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: fix possible store tearing in neigh_periodic_work()\n\nWhile looking at a related syzbot report involving neigh_periodic_work(),\nI found that I forgot to add an annotation when deleting an\nRCU protected item from a list.\n\nReaders use rcu_deference(*np), we need to use either\nrcu_assign_pointer() or WRITE_ONCE() on writer side\nto prevent store tearing.\n\nI use rcu_assign_pointer() to have lockdep support,\nthis was the choice made in neigh_flush_dev()." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 8.8, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:A - The vulnerable unmarked store runs in neigh_periodic_work() while lockless RCU readers in ___neigh_lookup_noref() walk the same hash chains during ARP/NDISC and L2 resolution. An adjacent LAN/WiFi attacker can populate stale neighbour entries via ARP/ND and concurrently drive lookups, which is the highest reasonable reachability for this subsystem.\nAC:L - The attacker controls the reader side with continuous adjacent traffic and can force GC-eligible entries by filling the neighbour table past gc_thresh1 and letting entries go stale, so both sides of the race are attacker-driven rather than a blind wait for an uncontrolled condition.\nPR:N - ARP/NDISC packet processing and subsequent neighbour lookups require no authentication or local account on the victim; an unauthenticated adjacent peer can create entries and trigger concurrent RCU readers.\nUI:N - Exploitation requires only attacker-sent frames and the kernel's periodic GC workqueue; no victim user action such as mounting a filesystem or opening a file is needed.\nS:U - Impact is confined to kernel memory and availability within the same host security authority; this is ordinary in-kernel corruption/DoS, not a VM escape, IOMMU bypass, or sandbox boundary cross.\nC:H - Store tearing on an RCU-protected neighbour next pointer can expose readers to a corrupted pointer while walking the hash chain, and under the highest-severity reading that memory corruption enables use of unintended kernel objects and arbitrary disclosure primitives.\nI:H - The same corrupted-pointer walk is memory corruption on a core networking structure; following a torn next pointer can be leveraged for unintended writes or control-flow hijack rather than being limited to a benign crash.\nA:H - A torn or otherwise invalid neighbour pointer dereferenced on the packet/lookup fast path causes kernel oops/panic or hangs in networking, which is a high availability impact." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "net/core/neighbour.c" ], "versions": [ { "version": "767e97e1e0db0d0f3152cd2f3bd3403596aedbad", "lessThan": "95eabb075a5902f4c0834ab1fb12dc35730c05af", "status": "affected", "versionType": "git" }, { "version": "767e97e1e0db0d0f3152cd2f3bd3403596aedbad", "lessThan": "2ea52a2fb8e87067e26bbab4efb8872639240eb0", "status": "affected", "versionType": "git" }, { "version": "767e97e1e0db0d0f3152cd2f3bd3403596aedbad", "lessThan": "147d89ee41434b97043c2dcb17a97dc151859baa", "status": "affected", "versionType": "git" }, { "version": "767e97e1e0db0d0f3152cd2f3bd3403596aedbad", "lessThan": "f82aac8162871e87027692b36af335a2375d4580", "status": "affected", "versionType": "git" }, { "version": "767e97e1e0db0d0f3152cd2f3bd3403596aedbad", "lessThan": "a75152d233370362eebedb2643592e7c883cc9fc", "status": "affected", "versionType": "git" }, { "version": "767e97e1e0db0d0f3152cd2f3bd3403596aedbad", "lessThan": "25563b581ba3a1f263a00e8c9a97f5e7363be6fd", "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/core/neighbour.c" ], "versions": [ { "version": "2.6.37", "status": "affected" }, { "version": "0", "lessThan": "2.6.37", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.258", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.198", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.135", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.57", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.5.7", "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": "2.6.37", "versionEndExcluding": "5.4.258" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.37", "versionEndExcluding": "5.10.198" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.37", "versionEndExcluding": "5.15.135" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.37", "versionEndExcluding": "6.1.57" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.37", "versionEndExcluding": "6.5.7" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.37", "versionEndExcluding": "6.6" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/95eabb075a5902f4c0834ab1fb12dc35730c05af" }, { "url": "https://git.kernel.org/stable/c/2ea52a2fb8e87067e26bbab4efb8872639240eb0" }, { "url": "https://git.kernel.org/stable/c/147d89ee41434b97043c2dcb17a97dc151859baa" }, { "url": "https://git.kernel.org/stable/c/f82aac8162871e87027692b36af335a2375d4580" }, { "url": "https://git.kernel.org/stable/c/a75152d233370362eebedb2643592e7c883cc9fc" }, { "url": "https://git.kernel.org/stable/c/25563b581ba3a1f263a00e8c9a97f5e7363be6fd" } ], "title": "net: fix possible store tearing in neigh_periodic_work()", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "problemTypes": [ { "descriptions": [ { "type": "CWE", "lang": "en", "description": "CWE-noinfo Not enough information" } ] } ], "metrics": [ { "cvssV3_1": { "scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE" } }, { "other": { "type": "ssvc", "content": { "timestamp": "2024-03-05T20:28:00.493037Z", "id": "CVE-2023-52522", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-11-06T19:54:03.263Z" } }, { "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T23:03:20.631Z" }, "title": "CVE Program Container", "references": [ { "url": "https://git.kernel.org/stable/c/95eabb075a5902f4c0834ab1fb12dc35730c05af", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/2ea52a2fb8e87067e26bbab4efb8872639240eb0", "tags": [ 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