289 lines
14 KiB
JSON
289 lines
14 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-46024",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2026-05-13T15:03:33.093Z",
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"datePublished": "2026-05-27T12:56:29.932Z",
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"dateUpdated": "2026-10-19T19:26:41.575Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-08-05T12:29:11.187Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nlibceph: Prevent potential null-ptr-deref in ceph_handle_auth_reply()\n\nIf a message of type CEPH_MSG_AUTH_REPLY contains a zero value for both\nprotocol and result, this is currently not treated as an error. In case\nof ac->negotiating == true and ac->protocol > 0, this leads to setting\nac->protocol = 0 and ac->ops = NULL. Thereafter, the check for\nac->protocol != protocol returns false, and init_protocol() is not\ncalled. Subsequently, ac->ops->handle_reply() is called, which leads to\na null pointer dereference, because ac->ops is still NULL.\n\nThis patch changes the check for ac->protocol != protocol to\n!ac->protocol, as this also includes the case when the protocol was set\nto zero in the message. This causes the message to be treated as\ncontaining a bad auth protocol."
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}
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],
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"metrics": [
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{
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"cvssV3_1": {
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"version": "3.1",
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
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"baseScore": 7.5,
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"baseSeverity": "HIGH"
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},
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"scenarios": [
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{
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"lang": "en",
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"value": "AV:N - The vulnerable code processes a CEPH_MSG_AUTH_REPLY received from a remote Ceph monitor over TCP; the libceph client reaches monitors across routed networks, so the attacker (rogue monitor or MITM) operates remotely.\nAC:L - The attacker fully controls the reply message contents and sends protocol=0/result=0 during the negotiation it controls; the crash is deterministic with no race or unobservable memory-layout dependency.\nPR:N - The crafted reply is processed during the authentication handshake before the monitor's identity is verified, and a remote server/MITM needs no privileges on the victim client.\nUI:N - Once a CephFS/RBD client is connected, monitor connections and reconnections (and the negotiation state) occur automatically, so no user action is required at attack time.\nS:U - The crash occurs within the kernel itself with no crossing of a security boundary into another authority such as a hypervisor or other VM.\nC:N - A NULL pointer dereference yields no information disclosure; no attacker-controlled memory is read or leaked.\nI:N - The NULL dereference does not modify any kernel data and provides no write primitive.\nA:H - Dereferencing the NULL ac->ops triggers a kernel oops/panic, crashing the system — a remote denial of service."
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}
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]
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"net/ceph/auth.c"
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],
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"versions": [
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{
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"version": "4e7a5dcd1bbab6560fbc8ada29a840e7a20ed7bc",
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"lessThan": "9ded62c302c0342efdb5eda3bf6e75720caad0df",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "4e7a5dcd1bbab6560fbc8ada29a840e7a20ed7bc",
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"lessThan": "f101271fcf55d7eacfefd610b51ec65f46ba8118",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "4e7a5dcd1bbab6560fbc8ada29a840e7a20ed7bc",
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"lessThan": "4b2738b93edad661178340239de657d876b73d3d",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "4e7a5dcd1bbab6560fbc8ada29a840e7a20ed7bc",
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"lessThan": "927e4bd5692f2a4901808822981fb2c8d4456548",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "4e7a5dcd1bbab6560fbc8ada29a840e7a20ed7bc",
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"lessThan": "016bc663657366d386993f63eb31072eb45a2b77",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "4e7a5dcd1bbab6560fbc8ada29a840e7a20ed7bc",
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"lessThan": "8f2be7285941a33a9f72579a23b96392f83c758e",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "4e7a5dcd1bbab6560fbc8ada29a840e7a20ed7bc",
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"lessThan": "5199c125d25aeae8615c4fc31652cc0fe624338e",
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"status": "affected",
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"versionType": "git"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"net/ceph/auth.c"
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],
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"versions": [
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{
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"version": "2.6.34",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "2.6.34",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.15.209",
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"lessThanOrEqual": "5.15.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.1.175",
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"lessThanOrEqual": "6.1.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.6.140",
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"lessThanOrEqual": "6.6.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.12.86",
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"lessThanOrEqual": "6.12.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.18.27",
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"lessThanOrEqual": "6.18.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.0.4",
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"lessThanOrEqual": "7.0.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.1",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "2.6.34",
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"versionEndExcluding": "5.15.209"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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]
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/9ded62c302c0342efdb5eda3bf6e75720caad0df"
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},
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{
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"url": "https://git.kernel.org/stable/c/f101271fcf55d7eacfefd610b51ec65f46ba8118"
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},
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{
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"url": "https://git.kernel.org/stable/c/4b2738b93edad661178340239de657d876b73d3d"
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},
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{
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"url": "https://git.kernel.org/stable/c/927e4bd5692f2a4901808822981fb2c8d4456548"
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},
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{
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"url": "https://git.kernel.org/stable/c/016bc663657366d386993f63eb31072eb45a2b77"
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},
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{
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"url": "https://git.kernel.org/stable/c/8f2be7285941a33a9f72579a23b96392f83c758e"
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},
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{
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"url": "https://git.kernel.org/stable/c/5199c125d25aeae8615c4fc31652cc0fe624338e"
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}
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],
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"title": "libceph: Prevent potential null-ptr-deref in ceph_handle_auth_reply()",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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},
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"adp": [
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{
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"id": "CVE-2026-46024",
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"role": "CISA Coordinator",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "yes"
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},
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{
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"Technical Impact": "partial"
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}
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],
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"version": "2.0.3",
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"timestamp": "2026-10-16T15:18:54.853796Z"
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}
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}
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}
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],
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"problemTypes": [
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{
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"descriptions": [
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{
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"lang": "en",
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"type": "CWE",
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"cweId": "CWE-476",
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"description": "CWE-476 NULL Pointer Dereference"
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}
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]
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2026-10-19T19:26:41.575Z"
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}
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}
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]
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}
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} |