{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2022-49085", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-02-26T01:49:39.248Z", "datePublished": "2025-02-26T01:54:43.579Z", "dateUpdated": "2026-08-05T08:53:48.711Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T08:53:48.711Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrbd: Fix five use after free bugs in get_initial_state\n\nIn get_initial_state, it calls notify_initial_state_done(skb,..) if\ncb->args[5]==1. If genlmsg_put() failed in notify_initial_state_done(),\nthe skb will be freed by nlmsg_free(skb).\nThen get_initial_state will goto out and the freed skb will be used by\nreturn value skb->len, which is a uaf bug.\n\nWhat's worse, the same problem goes even further: skb can also be\nfreed in the notify_*_state_change -> notify_*_state calls below.\nThus 4 additional uaf bugs happened.\n\nMy patch lets the problem callee functions: notify_initial_state_done\nand notify_*_state_change return an error code if errors happen.\nSo that the error codes could be propagated and the uaf bugs can be avoid.\n\nv2 reports a compilation warning. This v3 fixed this warning and built\nsuccessfully in my local environment with no additional warnings.\nv2: https://lore.kernel.org/patchwork/patch/1435218/" } ], "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 vulnerable path is reached via the DRBD generic netlink dump command DRBD_ADM_GET_INITIAL_STATE (local netlink syscall), not via DRBD’s replication network protocol or packet processing.\nAC:L - An attacker can invoke the dumpit path at will; the bug is a use-after-free on the dump skb after nlmsg_free(), and UAF exploitation does not depend on a race or other conditions outside attacker influence.\nPR:L - DRBD_ADM_GET_INITIAL_STATE is registered without GENL_ADMIN_PERM and does not go through drbd_adm_prepare’s CAP_NET_ADMIN check, so an unprivileged local user can trigger it.\nUI:N - Exploitation requires only sending a netlink dump request; no victim action such as mounting a device or opening a file is needed.\nS:U - Impact is confined to the local kernel’s security authority (standard local privilege-escalation/DoS via heap UAF), with no VM/IOMMU/sandbox boundary crossing.\nC:H - Freeing the dump skb and then continuing to use it (skb->len read, then netlink_dump send/free paths) is a heap use-after-free that can expose or be leveraged for arbitrary kernel memory disclosure.\nI:H - The same UAF/double-free of the netlink dump skb enables heap corruption and write primitives suitable for control-flow hijacking or arbitrary kernel writes.\nA:H - Use-after-free and double-free of the dump skb can cause kernel oops/panic or otherwise crash the system when the freed object is reused." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/block/drbd/drbd_int.h", "drivers/block/drbd/drbd_nl.c", "drivers/block/drbd/drbd_state.c", "drivers/block/drbd/drbd_state_change.h" ], "versions": [ { "version": "a29728463b254ce81ecefdf20c1a02e01d9361da", "lessThan": "0489700bfeb1e53eb2039c2291c67e71b0b40103", "status": "affected", "versionType": "git" }, { "version": "a29728463b254ce81ecefdf20c1a02e01d9361da", "lessThan": "dcf6be17b5c53b741898d2223b23e66d682de300", "status": "affected", "versionType": "git" }, { "version": "a29728463b254ce81ecefdf20c1a02e01d9361da", "lessThan": "188fe6b26765edbad4055611c0f788b6870f4024", "status": "affected", "versionType": "git" }, { "version": "a29728463b254ce81ecefdf20c1a02e01d9361da", "lessThan": "b6a4055036eed1f5e239ce3d8b0db1ce38bba447", "status": "affected", "versionType": "git" }, { "version": "a29728463b254ce81ecefdf20c1a02e01d9361da", "lessThan": "594205b4936771a250f9d141e7e0fff21c3dd2d9", "status": "affected", "versionType": "git" }, { "version": "a29728463b254ce81ecefdf20c1a02e01d9361da", "lessThan": "a972c768723359ec995579902473028fe3cd64b1", "status": "affected", "versionType": "git" }, { "version": "a29728463b254ce81ecefdf20c1a02e01d9361da", "lessThan": "de63e74da2333b4068bb79983e632db730fea97e", "status": "affected", "versionType": "git" }, { "version": "a29728463b254ce81ecefdf20c1a02e01d9361da", "lessThan": "226e993c39405292781bfcf4b039a8db56aab362", "status": "affected", "versionType": "git" }, { "version": "a29728463b254ce81ecefdf20c1a02e01d9361da", "lessThan": "aadb22ba2f656581b2f733deb3a467c48cc618f6", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/block/drbd/drbd_int.h", "drivers/block/drbd/drbd_nl.c", "drivers/block/drbd/drbd_state.c", "drivers/block/drbd/drbd_state_change.h" ], "versions": [ { "version": "4.5", "status": "affected" }, { "version": "0", "lessThan": "4.5", "status": "unaffected", "versionType": "semver" }, { "version": "4.9.311", "lessThanOrEqual": "4.9.*", "status": "unaffected", "versionType": "semver" }, { "version": "4.14.276", "lessThanOrEqual": "4.14.*", "status": "unaffected", "versionType": "semver" }, { "version": "4.19.238", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.189", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.111", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.34", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.16.20", "lessThanOrEqual": "5.16.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.17.3", "lessThanOrEqual": "5.17.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.18", "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": "4.5", "versionEndExcluding": "4.9.311" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.5", "versionEndExcluding": "4.14.276" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.5", "versionEndExcluding": "4.19.238" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.5", "versionEndExcluding": "5.4.189" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.5", "versionEndExcluding": "5.10.111" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.5", "versionEndExcluding": "5.15.34" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.5", "versionEndExcluding": "5.16.20" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.5", "versionEndExcluding": "5.17.3" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.5", "versionEndExcluding": "5.18" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/0489700bfeb1e53eb2039c2291c67e71b0b40103" }, { "url": "https://git.kernel.org/stable/c/dcf6be17b5c53b741898d2223b23e66d682de300" }, { "url": "https://git.kernel.org/stable/c/188fe6b26765edbad4055611c0f788b6870f4024" }, { "url": "https://git.kernel.org/stable/c/b6a4055036eed1f5e239ce3d8b0db1ce38bba447" }, { "url": "https://git.kernel.org/stable/c/594205b4936771a250f9d141e7e0fff21c3dd2d9" }, { "url": "https://git.kernel.org/stable/c/a972c768723359ec995579902473028fe3cd64b1" }, { "url": "https://git.kernel.org/stable/c/de63e74da2333b4068bb79983e632db730fea97e" }, { "url": "https://git.kernel.org/stable/c/226e993c39405292781bfcf4b039a8db56aab362" }, { "url": "https://git.kernel.org/stable/c/aadb22ba2f656581b2f733deb3a467c48cc618f6" } ], "title": "drbd: Fix five use after free bugs in get_initial_state", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "metrics": [ { "cvssV3_1": { "scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH" } }, { "other": { "type": "ssvc", "content": { "id": "CVE-2022-49085", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "total" } ], "version": "2.0.3", "timestamp": "2025-02-27T17:59:12.644580Z" } } } ], "problemTypes": [ { "descriptions": [ { "lang": "en", "type": "CWE", "cweId": "CWE-416", "description": "CWE-416 Use After Free" } ] } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-02-27T18:02:29.848Z" } } ] } }