{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-46085", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-05-13T15:03:33.096Z", "datePublished": "2026-05-27T12:58:27.125Z", "dateUpdated": "2026-08-05T12:29:33.154Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:29:33.154Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nrxrpc: Fix rxkad crypto unalignment handling\n\nFix handling of a packet with a misaligned crypto length. Also handle\nnon-ENOMEM errors from decryption by aborting. Further, remove the\nWARN_ON_ONCE() so that it can't be remotely triggered (a trace line can\nstill be emitted)." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "baseScore": 7.5, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:N - rxrpc is the UDP-based AFS RPC protocol; the vulnerable code processes DATA packets received from a remote network peer, and AFS cells routinely traverse the internet.\nAC:L - The attacker fully controls the DATA payload length (UDP datagram size minus headers) and can reliably set it to a non-multiple of 8; the rxkad checksum does not cover the data length, so the misaligned packet reliably reaches the crypto path.\nPR:N - An on-path attacker modifying an in-flight packet, or a malicious server the victim client connects to, needs no credentials or privileges on the target system since the 16-bit checksum gate is independent of the data length.\nUI:N - Received DATA packets are decrypted/verified automatically during normal call processing; tampering with packets of an existing connection requires no victim action.\nS:U - The triggered WARN/panic is contained within the kernel's own security authority and crosses no privilege or virtualization boundary.\nC:N - The bug only causes a crypto error path to WARN; no kernel memory is read or disclosed to the remote attacker.\nI:N - No memory is corrupted or modified—the misaligned length is rejected by the cipher, so there is no write primitive or data tampering.\nA:H - The remotely-triggerable WARN_ON_ONCE causes a kernel panic on the common panic_on_warn configuration, yielding a full denial of service." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "include/trace/events/rxrpc.h", "net/rxrpc/rxkad.c" ], "versions": [ { "version": "9853917f9edf08efb0b55c26d9eb8340f126d9e9", "lessThan": "f1c6bd0cc786a8fa74829ce3c4b3673944a308f4", "status": "affected", "versionType": "git" }, { "version": "e9c369d58785044427450350ad32d6a2497fb379", "lessThan": "440d20d95e844b657a93a0b2dcc2aae155efdce6", "status": "affected", "versionType": "git" }, { "version": "bf4d6e4a6856eedeb7f66eb91224115bfff4e2cb", "lessThan": "f0d3efd03b2a9e0f1ffa6df8fcb264af3d494286", "status": "affected", "versionType": "git" }, { "version": "f93af41b9f5f798823d0d0fb8765c2a936d76270", "lessThan": "af9271eb666d07b6f65612dc160a47f7cb5220ed", "status": "affected", "versionType": "git" }, { "version": "f93af41b9f5f798823d0d0fb8765c2a936d76270", "lessThan": "def304aae2edf321d2671fd6ca766a93c21f877e", "status": "affected", "versionType": "git" }, { "version": "5cdf57eda01a1ffaeb61ac39ec4dcc94a690431e", "status": "affected", "versionType": "git" }, { "version": "6.6.135", "lessThan": "6.6.140", "status": "affected", "versionType": "semver" }, { "version": "6.12.82", "lessThan": "6.12.86", "status": "affected", "versionType": "semver" }, { "version": "6.18.23", "lessThan": "6.18.27", "status": "affected", "versionType": "semver" }, { "version": "6.19.13", "lessThan": "6.20", "status": "affected", "versionType": "semver" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "include/trace/events/rxrpc.h", "net/rxrpc/rxkad.c" ], "versions": [ { "version": "7.0", "status": "affected" }, { "version": "0", "lessThan": "7.0", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.140", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.86", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.18.27", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.0.4", "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": "6.6.135", "versionEndExcluding": "6.6.140" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.12.82", "versionEndExcluding": "6.12.86" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.18.23", "versionEndExcluding": "6.18.27" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "7.0", "versionEndExcluding": "7.0.4" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "7.0", "versionEndExcluding": "7.1" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.19.13" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/f1c6bd0cc786a8fa74829ce3c4b3673944a308f4" }, { "url": "https://git.kernel.org/stable/c/440d20d95e844b657a93a0b2dcc2aae155efdce6" }, { "url": "https://git.kernel.org/stable/c/f0d3efd03b2a9e0f1ffa6df8fcb264af3d494286" }, { "url": "https://git.kernel.org/stable/c/af9271eb666d07b6f65612dc160a47f7cb5220ed" }, { "url": "https://git.kernel.org/stable/c/def304aae2edf321d2671fd6ca766a93c21f877e" } ], "title": "rxrpc: Fix rxkad crypto unalignment handling", "x_generator": { "engine": "bippy-1.2.0" } } } }