{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2022-49450", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-02-26T02:08:31.572Z", "datePublished": "2025-02-26T02:13:00.379Z", "dateUpdated": "2026-05-11T19:00:06.588Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T19:00:06.588Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nrxrpc: Fix listen() setting the bar too high for the prealloc rings\n\nAF_RXRPC's listen() handler lets you set the backlog up to 32 (if you bump\nup the sysctl), but whilst the preallocation circular buffers have 32 slots\nin them, one of them has to be a dead slot because we're using CIRC_CNT().\n\nThis means that listen(rxrpc_sock, 32) will cause an oops when the socket\nis closed because rxrpc_service_prealloc_one() allocated one too many calls\nand rxrpc_discard_prealloc() won't then be able to get rid of them because\nit'll think the ring is empty. rxrpc_release_calls_on_socket() then tries\nto abort them, but oopses because call->peer isn't yet set.\n\nFix this by setting the maximum backlog to RXRPC_BACKLOG_MAX - 1 to match\nthe ring capacity.\n\n BUG: kernel NULL pointer dereference, address: 0000000000000086\n ...\n RIP: 0010:rxrpc_send_abort_packet+0x73/0x240 [rxrpc]\n Call Trace:\n \n ? __wake_up_common_lock+0x7a/0x90\n ? rxrpc_notify_socket+0x8e/0x140 [rxrpc]\n ? rxrpc_abort_call+0x4c/0x60 [rxrpc]\n rxrpc_release_calls_on_socket+0x107/0x1a0 [rxrpc]\n rxrpc_release+0xc9/0x1c0 [rxrpc]\n __sock_release+0x37/0xa0\n sock_close+0x11/0x20\n __fput+0x89/0x240\n task_work_run+0x59/0x90\n do_exit+0x319/0xaa0" } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "net/rxrpc/sysctl.c" ], "versions": [ { "version": "00e907127e6f86d0f9b122d9b4347a8aa09a8b61", "lessThan": "61fb38cfbb1d54d3dafd0c25752f684b3cd00b32", "status": "affected", "versionType": "git" }, { "version": "00e907127e6f86d0f9b122d9b4347a8aa09a8b61", "lessThan": "616f76498d5ddf26b997caf64a95cda3c8a55533", "status": "affected", "versionType": "git" }, { "version": "00e907127e6f86d0f9b122d9b4347a8aa09a8b61", "lessThan": "4a3a78b7918bdd723d8c7c9786522ca969bffcc4", "status": "affected", "versionType": "git" }, { "version": "00e907127e6f86d0f9b122d9b4347a8aa09a8b61", "lessThan": "91b34bf0409f43bb60453bab23c5beadd726d022", "status": "affected", "versionType": "git" }, { "version": "00e907127e6f86d0f9b122d9b4347a8aa09a8b61", "lessThan": "5b4826657d36c218e9f08e8d3223b0edce3de88f", "status": "affected", "versionType": "git" }, { "version": "00e907127e6f86d0f9b122d9b4347a8aa09a8b61", "lessThan": "b3a9b227d5e7467b8518160ff034ea22bb9de573", "status": "affected", "versionType": "git" }, { "version": "00e907127e6f86d0f9b122d9b4347a8aa09a8b61", "lessThan": "369de57492c4f1a42563c5a3bd365822ca3bfc79", "status": "affected", "versionType": "git" }, { "version": "00e907127e6f86d0f9b122d9b4347a8aa09a8b61", "lessThan": "e198f1930050e3115c80b67d9249f80f98a27c67", "status": "affected", "versionType": "git" }, { "version": "00e907127e6f86d0f9b122d9b4347a8aa09a8b61", "lessThan": "88e22159750b0d55793302eeed8ee603f5c1a95c", "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/rxrpc/sysctl.c" ], "versions": [ { "version": "4.9", "status": "affected" }, { "version": "0", "lessThan": "4.9", "status": "unaffected", "versionType": "semver" }, { "version": "4.9.318", "lessThanOrEqual": "4.9.*", "status": "unaffected", "versionType": "semver" }, { "version": "4.14.283", "lessThanOrEqual": "4.14.*", "status": "unaffected", "versionType": "semver" }, { "version": "4.19.247", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.198", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.121", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.46", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.17.14", "lessThanOrEqual": "5.17.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.18.3", "lessThanOrEqual": "5.18.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.19", "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": "4.9", "versionEndExcluding": "4.9.318" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.9", "versionEndExcluding": "4.14.283" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.9", "versionEndExcluding": "4.19.247" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.9", "versionEndExcluding": "5.4.198" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.9", "versionEndExcluding": "5.10.121" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.9", "versionEndExcluding": "5.15.46" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.9", "versionEndExcluding": "5.17.14" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.9", "versionEndExcluding": "5.18.3" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.9", "versionEndExcluding": "5.19" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/61fb38cfbb1d54d3dafd0c25752f684b3cd00b32" }, { "url": "https://git.kernel.org/stable/c/616f76498d5ddf26b997caf64a95cda3c8a55533" }, { "url": "https://git.kernel.org/stable/c/4a3a78b7918bdd723d8c7c9786522ca969bffcc4" }, { "url": "https://git.kernel.org/stable/c/91b34bf0409f43bb60453bab23c5beadd726d022" }, { "url": "https://git.kernel.org/stable/c/5b4826657d36c218e9f08e8d3223b0edce3de88f" }, { "url": "https://git.kernel.org/stable/c/b3a9b227d5e7467b8518160ff034ea22bb9de573" }, { "url": "https://git.kernel.org/stable/c/369de57492c4f1a42563c5a3bd365822ca3bfc79" }, { "url": "https://git.kernel.org/stable/c/e198f1930050e3115c80b67d9249f80f98a27c67" }, { "url": "https://git.kernel.org/stable/c/88e22159750b0d55793302eeed8ee603f5c1a95c" } ], "title": "rxrpc: Fix listen() setting the bar too high for the prealloc rings", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "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": { "id": "CVE-2022-49450", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "version": "2.0.3", "timestamp": "2025-10-01T19:40:32.763863Z" } } } ], "problemTypes": [ { "descriptions": [ { "lang": "en", "type": "CWE", "cweId": "CWE-476", "description": "CWE-476 NULL Pointer Dereference" } ] } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-10-01T19:46:48.225Z" } } ] } }