337 lines
16 KiB
JSON
337 lines
16 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"cveMetadata": {
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"cveId": "CVE-2023-52656",
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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": "2024-03-06T09:52:12.099Z",
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"datePublished": "2024-05-13T13:12:35.333Z",
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"dateUpdated": "2026-08-05T09:10:53.267Z"
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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": "2026-08-05T09:10:53.267Z"
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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\nio_uring: drop any code related to SCM_RIGHTS\n\nThis is dead code after we dropped support for passing io_uring fds\nover SCM_RIGHTS, get rid of it."
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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:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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"baseScore": 7.8,
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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:L - The vulnerable SCM accounting path is reached via local io_uring syscalls (io_uring_setup and io_uring_register with IORING_REGISTER_FILES), not via network packet processing.\nAC:L - An unprivileged attacker fully controls both sides of the unix GC / unix_stream_read_generic race by creating the ring, registering unix sockets as fixed files, and driving concurrent SCM/socket operations, so success does not depend on external conditions.\nPR:L - io_uring is available to unprivileged local users by default (sysctl io_uring_disabled=0); registering files and creating AF_UNIX sockets requires only a normal user account.\nUI:N - Exploitation requires no victim action; the attacker triggers the bug entirely through their own syscalls.\nS:U - Impact remains within the local kernel's security authority (standard local privilege escalation), with no VM/IOMMU/sandbox boundary crossed.\nC:H - The bug is a use-after-free in the io_uring/AF_UNIX SCM_RIGHTS GC interaction; UAF of socket/file objects enables arbitrary kernel memory read primitives.\nI:H - The same UAF is exploitable for heap reuse and arbitrary write / control-flow hijacking, matching the severity already assigned to sibling CVE-2023-52654 for this vulnerability class.\nA:H - Triggering the UAF/race reliably causes kernel oops, panic, or hang even when not fully exploited for code execution."
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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/linux/io_uring_types.h",
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"io_uring/filetable.c",
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"io_uring/io_uring.c",
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"io_uring/rsrc.c",
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"io_uring/rsrc.h"
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],
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"versions": [
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"io_uring/filetable.c",
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"io_uring/io_uring.c",
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"io_uring/rsrc.c",
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"io_uring/rsrc.h"
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],
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"versions": [
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{
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"version": "5.1",
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"status": "affected"
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{
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"version": "0",
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"lessThan": "5.1",
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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": "5.4.273",
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"lessThanOrEqual": "5.4.*",
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"status": "unaffected",
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},
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{
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"version": "5.10.214",
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"lessThanOrEqual": "5.10.*",
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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": "5.15.153",
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"lessThanOrEqual": "5.15.*",
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"status": "unaffected",
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},
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{
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"version": "6.1.83",
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"lessThanOrEqual": "6.1.*",
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"status": "unaffected",
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"version": "6.6.23",
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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": "6.7.11",
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"lessThanOrEqual": "6.7.*",
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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": "6.8",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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