353 lines
18 KiB
JSON
353 lines
18 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-2024-53206",
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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": "2024-11-19T17:17:25.019Z",
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"datePublished": "2024-12-27T13:49:52.131Z",
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"dateUpdated": "2026-08-05T11:44:35.910Z"
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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": "2026-08-05T11:44:35.910Z"
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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\ntcp: Fix use-after-free of nreq in reqsk_timer_handler().\n\nThe cited commit replaced inet_csk_reqsk_queue_drop_and_put() with\n__inet_csk_reqsk_queue_drop() and reqsk_put() in reqsk_timer_handler().\n\nThen, oreq should be passed to reqsk_put() instead of req; otherwise\nuse-after-free of nreq could happen when reqsk is migrated but the\nretry attempt failed (e.g. due to timeout).\n\nLet's pass oreq to reqsk_put()."
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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: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 - The vulnerable request sock and its timer are created purely by inbound TCP SYN packets to a listening port, and the failure branch is driven by the remote peer withholding or racing the final ACK. This is core TCP/IP receive-path code reachable by any remote client, including internet-facing servers.\nAC:L - The attacker controls both the object supply (SYN flood populates the SYN queue and the request_sock slab) and the branch selection (never ACK to force `expire`, or send the final ACK concurrently to lose the `own_req` race), giving repeatable success. Listener migration is a routine, recurring event on exactly the SO_REUSEPORT rolling-restart/worker-recycle deployments that enable `tcp_migrate_req`, so a persistent attacker hits it without special effort.\nPR:N - No authentication or credentials of any kind are needed — the attacker only sends SYNs to an open TCP port and declines to complete the handshake. The entire path executes in the pre-connection SYN-queue/timer context.\nUI:N - The whole sequence runs in softirq timer context off attacker-supplied packets, with no action required from any local user or administrator.\nS:U - The corruption is confined to kernel slab memory and kernel socket structures within the same security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - The use-after-free lets the attacker reoccupy the freed `request_sock` slot with objects whose contents they control via crafted SYNs, and the resulting premature free of a live reqsk yields reads of `rsk_ops`, `rsk_listener`, and `saved_syn` from attacker-groomed memory, enabling kernel memory disclosure.\nI:H - `reqsk_put()` on freed memory performs a write (refcount decrement) into the slab, which can corrupt the SLUB free pointer or underflow a live request sock's refcount, cascading to an indirect call through `req->rsk_ops->destructor` read from freed memory and a `sock_put()` listener refcount underflow — a control-flow-hijack-capable primitive.\nA:H - Even without full exploitation, the use-after-free and the resulting premature frees/refcount underflows on hashed request socks and listener sockets reliably produce slab corruption and kernel oops/panic, remotely and repeatably."
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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/ipv4/inet_connection_sock.c"
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],
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"versions": [
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{
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"version": "8459d61fbf24967839a70235165673148c7c7f17",
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"lessThan": "2dcc86fefe09ac853158afd96b60d544af115dc5",
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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": "5071beb59ee416e8ab456ac8647a4dabcda823b1",
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"lessThan": "9a3c1ad93e6fba67b3a637cfa95a57a6685e4908",
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"status": "affected",
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"status": "affected",
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},
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{
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"version": "e8c526f2bdf1845bedaf6a478816a3d06fa78b8f",
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"lessThan": "6d845028609a4af0ad66f499ee0bd5789122b067",
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"status": "affected",
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{
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"version": "e8c526f2bdf1845bedaf6a478816a3d06fa78b8f",
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"lessThan": "c31e72d021db2714df03df6c42855a1db592716c",
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"status": "affected",
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{
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"version": "106e457953315e476b3642ef24be25ed862aaba3",
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"status": "affected",
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},
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{
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"version": "c964bf65f80a14288d767023a1b300b30f5b9cd0",
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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": "5.15.170",
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"lessThan": "5.15.174",
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"status": "affected",
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"versionType": "semver"
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},
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{
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"version": "6.1.115",
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"lessThan": "6.1.120",
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"status": "affected",
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"versionType": "semver"
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},
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{
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"version": "6.6.59",
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"lessThan": "6.6.64",
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"status": "affected",
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"versionType": "semver"
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},
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{
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"version": "6.11.6",
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"lessThan": "6.11.11",
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"status": "affected",
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"versionType": "semver"
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},
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{
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"version": "5.4.293",
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"lessThan": "5.5",
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"status": "affected",
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"versionType": "semver"
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},
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{
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"version": "5.10.237",
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"lessThan": "5.11",
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"status": "affected",
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"versionType": "semver"
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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/ipv4/inet_connection_sock.c"
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],
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"versions": [
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{
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"version": "6.12",
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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": "6.12",
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"status": "unaffected",
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},
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{
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"version": "5.15.174",
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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": "6.1.120",
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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": "6.6.64",
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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": "6.11.11",
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"lessThanOrEqual": "6.11.*",
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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": "6.12.2",
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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": "6.13",
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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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"references": [
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"url": "https://git.kernel.org/stable/c/2dcc86fefe09ac853158afd96b60d544af115dc5"
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},
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{
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"url": "https://git.kernel.org/stable/c/9a3c1ad93e6fba67b3a637cfa95a57a6685e4908"
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},
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{
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"url": "https://git.kernel.org/stable/c/65ed89cad1f57034c256b016e89e8c0a4ec7c65b"
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},
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{
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"url": "https://git.kernel.org/stable/c/d0eb14cb8c08b00c36a3d5dc57a6f428b301f721"
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},
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{
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"url": "https://git.kernel.org/stable/c/6d845028609a4af0ad66f499ee0bd5789122b067"
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},
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{
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"url": "https://git.kernel.org/stable/c/c31e72d021db2714df03df6c42855a1db592716c"
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}
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],
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"title": "tcp: Fix use-after-free of nreq in reqsk_timer_handler().",
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"x_generator": {
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"engine": "bippy-1.2.0"
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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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"cvssV3_1": {
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"scope": "UNCHANGED",
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"version": "3.1",
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"baseScore": 7.8,
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"attackVector": "LOCAL",
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"baseSeverity": "HIGH",
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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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"integrityImpact": "HIGH",
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"userInteraction": "NONE",
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"attackComplexity": "LOW",
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"availabilityImpact": "HIGH",
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"privilegesRequired": "LOW",
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"confidentialityImpact": "HIGH"
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}
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},
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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-2024-53206",
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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": "no"
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},
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{
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"Technical Impact": "total"
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}
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],
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"version": "2.0.3",
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"timestamp": "2025-02-11T15:43:21.588054Z"
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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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"descriptions": [
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{
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"lang": "en",
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"type": "CWE",
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"cweId": "CWE-416",
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"description": "CWE-416 Use After Free"
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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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"dateUpdated": "2025-02-11T15:45:26.365Z"
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}
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},
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{
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"title": "CVE Program Container",
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"references": [
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{
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"url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"
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}
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],
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"dateUpdated": "2025-11-03T20:47:34.185Z"
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}
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}
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} |