249 lines
12 KiB
JSON
249 lines
12 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-2026-45988",
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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": "2026-05-13T15:03:33.090Z",
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"datePublished": "2026-05-27T12:55:39.740Z",
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"dateUpdated": "2026-10-19T19:26:41.147Z"
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},
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"containers": {
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"cna": {
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"shortName": "Linux",
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"dateUpdated": "2026-08-05T12:29:02.856Z"
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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\nrxrpc: Fix re-decryption of RESPONSE packets\n\nIf a RESPONSE packet gets a temporary failure during processing, it may end\nup in a partially decrypted state - and then get requeued for a retry.\n\nFix this by just discarding the packet; we will send another CHALLENGE\npacket and thereby elicit a further response. Similarly, discard an\nincoming CHALLENGE packet if we get an error whilst generating a RESPONSE;\nthe server will send another CHALLENGE."
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}
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],
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"metrics": [
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{
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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:H/A:H",
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"baseScore": 9.8,
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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 - rxrpc is a UDP/IP network protocol; the vulnerable CHALLENGE/RESPONSE handling processes packets received from a remote peer (a connecting client, or a malicious/spoofed AFS server) over the network.\nAC:L - The bug is gated on a transient `-ENOMEM`/`-EAGAIN` during handshake processing, but an attacker can induce the required memory pressure by flooding the target with concurrent rxrpc handshakes, making the failing `GFP_NOFS` allocation reachable repeatably.\nPR:N - The CHALLENGE/RESPONSE packets are processed during the security handshake before the connection is secured (`RXRPC_CONN_SERVICE_CHALLENGING`), so no authentication or credentials are needed to reach the code.\nUI:N - A server processing an incoming RESPONSE, and automated AFS clients/daemons processing a CHALLENGE, require no human interaction to trigger the fault.\nS:U - The corruption and its impact are confined to the kernel's own memory/security authority; no crossing of a VM, IOMMU, or sandbox boundary is involved.\nC:H - The CHALLENGE-path refcount underflow frees the `rxrpc_connection` while still referenced; a UAF lets an attacker reallocate and read controlled freed-object contents, enabling kernel memory disclosure.\nI:H - The same use-after-free / refcount-underflow on the connection object enables heap grooming and write primitives over the freed structure, allowing kernel memory/control-flow corruption.\nA:H - The double-put UAF and the re-decryption of partially-decrypted RESPONSE packets reliably oops/panic the kernel and abort connections, causing a 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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"include/trace/events/rxrpc.h",
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"net/rxrpc/conn_event.c"
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],
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"status": "affected",
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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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"include/trace/events/rxrpc.h",
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"net/rxrpc/conn_event.c"
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],
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"versions": [
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{
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"version": "2.6.22",
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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": "2.6.22",
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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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},
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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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"references": [
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{
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"url": "https://git.kernel.org/stable/c/d61482be4aae1835b78875761206241835a7510e"
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},
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{
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"url": "https://git.kernel.org/stable/c/7b89868305052b94a91b708c462bc2281fa42a4a"
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},
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{
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"url": "https://git.kernel.org/stable/c/76cb9a2d252274adfae6e293a292434631a7d472"
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},
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{
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"url": "https://git.kernel.org/stable/c/f55b383070170e988e4dec28be2af1714d258521"
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{
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"url": "https://git.kernel.org/stable/c/0422e7a4883f25101903f3e8105c0808aa5f4ce9"
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}
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],
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"title": "rxrpc: Fix re-decryption of RESPONSE packets",
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"content": {
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"id": "CVE-2026-45988",
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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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"Technical Impact": "total"
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"version": "2.0.3",
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"timestamp": "2026-10-16T15:18:47.821756Z"
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}
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"descriptions": [
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"lang": "en",
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"type": "CWE",
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"cweId": "CWE-682",
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"description": "CWE-682 Incorrect Calculation"
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}
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]
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}
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"title": "CISA ADP Vulnrichment",
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