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-2026-43406",
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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": "2026-05-01T14:12:56.007Z",
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"datePublished": "2026-05-08T14:21:46.246Z",
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"dateUpdated": "2026-10-19T19:16:28.625Z"
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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": "2026-08-05T12:27:49.364Z"
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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 out-of-bounds reads in process_message_header()\n\nIf the message frame is (maliciously) corrupted in a way that the\nlength of the control segment ends up being less than the size of the\nmessage header or a different frame is made to look like a message\nframe, out-of-bounds reads may ensue in process_message_header().\n\nPerform an explicit bounds check before decoding the message header."
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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:H/I:N/A:H",
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"baseScore": 9.1,
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"baseSeverity": "CRITICAL"
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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 libceph messenger v2 path is reached by TCP data received from a Ceph peer, and the reproducer triggers it over the network against a kernel Ceph client.\nAC:L - The bug is deterministic: a peer sends a FRAME_TAG_MESSAGE frame with a control segment shorter than struct ceph_msg_header2 in msgr2 crc/non-secure mode. No race or attacker-uncontrolled timing condition is required.\nPR:N - The vulnerable read can occur during CEPH_CON_S_V2_HELLO or CEPH_CON_S_V2_AUTH before credentials are verified, so the network peer does not need authenticated privileges.\nUI:N - In a reasonable deployment with an already configured or reconnecting Ceph client, a malicious or spoofed Ceph peer can send the frame without further victim action.\nS:U - The impact is within the kernel/libceph client security scope and does not cross a VM, IOMMU, or other separate security authority boundary.\nC:H - The flaw is a slab out-of-bounds read of attacker-triggered kernel memory beyond a too-small control buffer. Following the required guidance, an out-of-bounds read that is not strictly limited to only a few bytes is scored High for confidentiality.\nI:N - The defect is an out-of-bounds read, and the investigated path does not provide an out-of-bounds write, memory corruption, or authenticated message dispatch that would directly modify data.\nA:H - The malformed network frame deterministically triggers a KASAN-detected slab out-of-bounds access in the ceph-msgr workqueue and can fault/disrupt the Ceph client connection. Repeated unauthenticated triggering can deny availability of kernel Ceph storage access."
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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/messenger_v2.c"
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],
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"versions": [
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{
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"version": "cd1a677cad994021b19665ed476aea63f5d54f31",
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"lessThan": "76ccf21a12c5f6d6790bc32c7da82446d877b2f4",
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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": "cd1a677cad994021b19665ed476aea63f5d54f31",
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"lessThan": "75582aaa580c11aed4c7731cad6b068b700e7efb",
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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": "cd1a677cad994021b19665ed476aea63f5d54f31",
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"lessThan": "50156622eb0888e62541d715a98584480a1bc7cb",
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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": "cd1a677cad994021b19665ed476aea63f5d54f31",
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"lessThan": "dbd857a9e1e33ea71eaf3e211877027e533770d1",
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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": "cd1a677cad994021b19665ed476aea63f5d54f31",
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"lessThan": "69fe5af33fa3806f398d21c081d73c66e5523bc2",
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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": "cd1a677cad994021b19665ed476aea63f5d54f31",
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"lessThan": "035867ae6f18df0aeedb2a57a5b74091bd4e3fe8",
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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": "cd1a677cad994021b19665ed476aea63f5d54f31",
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"lessThan": "69fb5d91bba44ecf7eb80530b85fa4fb028921d5",
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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/messenger_v2.c"
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],
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"versions": [
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{
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"version": "5.11",
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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": "5.11",
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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": "5.15.203",
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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": "6.1.167",
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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": "6.6.130",
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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": "6.12.78",
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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": "6.18.19",
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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": "6.19.9",
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"lessThanOrEqual": "6.19.*",
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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",
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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": "5.11",
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"versionEndExcluding": "5.15.203"
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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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"versionStartIncluding": "5.11",
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"versionEndExcluding": "6.6.130"
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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/76ccf21a12c5f6d6790bc32c7da82446d877b2f4"
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},
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{
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"url": "https://git.kernel.org/stable/c/75582aaa580c11aed4c7731cad6b068b700e7efb"
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},
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{
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"url": "https://git.kernel.org/stable/c/50156622eb0888e62541d715a98584480a1bc7cb"
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},
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{
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"url": "https://git.kernel.org/stable/c/dbd857a9e1e33ea71eaf3e211877027e533770d1"
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},
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{
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"url": "https://git.kernel.org/stable/c/69fe5af33fa3806f398d21c081d73c66e5523bc2"
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},
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{
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"url": "https://git.kernel.org/stable/c/035867ae6f18df0aeedb2a57a5b74091bd4e3fe8"
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},
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{
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"url": "https://git.kernel.org/stable/c/69fb5d91bba44ecf7eb80530b85fa4fb028921d5"
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}
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],
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"title": "libceph: prevent potential out-of-bounds reads in process_message_header()",
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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-2026-43406",
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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": "2026-10-16T15:17:09.082944Z"
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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-125",
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"description": "CWE-125 Out-of-bounds Read"
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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": "2026-10-19T19:16:28.625Z"
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}
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}
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]
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}
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} |