298 lines
17 KiB
JSON
298 lines
17 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-2026-72299",
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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": "2026-08-09T03:40:39.918Z",
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"datePublished": "2026-08-15T05:55:19.147Z",
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"dateUpdated": "2026-10-16T18:55:15.859Z"
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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": "2026-08-23T12:47:12.393Z"
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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\ntipc: restrict socket queue dumps in enqueue tracepoints\n\ntipc_sk_enqueue() runs with sk->sk_lock.slock held while the socket is\nowned by user context. The spinlock protects the backlog queue in this\npath, but it does not serialize against the socket owner consuming or\npurging sk_receive_queue.\n\nKASAN reported:\n\n CPU: 14 UID: 0 PID: 1050 Comm: tipc3 Not tainted 7.1.0-rc6+ #126 PREEMPT(lazy)\n Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014\n Call Trace:\n <TASK>\n dump_stack_lvl+0x76/0xa0 lib/dump_stack.c:123\n print_report+0xce/0x5b0 mm/kasan/report.c:482\n kasan_report+0xc6/0x100 mm/kasan/report.c:597\n __asan_report_load4_noabort+0x14/0x30 mm/kasan/report_generic.c:380\n tipc_skb_dump+0x1327/0x16f0 net/tipc/trace.c:73\n tipc_list_dump+0x208/0x2e0 net/tipc/trace.c:187\n tipc_sk_dump+0xaf6/0xd60 net/tipc/socket.c:3996\n trace_event_raw_event_tipc_sk_class+0x312/0x5a0 net/tipc/trace.h:188\n tipc_sk_rcv+0xb1d/0x1d50 net/tipc/socket.c:2497\n tipc_node_xmit+0x1c3/0x1440 net/tipc/node.c:1689\n __tipc_sendmsg+0x97a/0x1440 net/tipc/socket.c:1512\n tipc_sendmsg+0x52/0x80 net/tipc/socket.c:1400\n sock_sendmsg+0x2f6/0x3e0 net/socket.c:825\n splice_to_socket+0x7f9/0x1010 fs/splice.c:884\n do_splice+0xe21/0x2330 fs/splice.c:936\n __do_splice+0x153/0x260 fs/splice.c:1431\n __x64_sys_splice+0x150/0x230 fs/splice.c:1616\n x64_sys_call+0xeb5/0x2790 arch/x86/entry/syscall_64.c:41\n do_syscall_64+0xf3/0x620 arch/x86/entry/syscall_64.c:63\n entry_SYSCALL_64_after_hwframe+0x76/0x7e arch/x86/entry/entry_64.S:130\n RIP: 0033:0x71624e8aafe2\n Code: 08 0f 85 71 3a ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 <c3> 66 2e 0f 1f 84 00 00 00 00 00 66 2e 0f 1f 84 00 00 00 00 00 66\n RSP: 002b:0000716157ffed68 EFLAGS: 00000246 ORIG_RAX: 0000000000000113\n RAX: ffffffffffffffda RBX: 0000716157fff6c0 RCX: 000071624e8aafe2\n RDX: 000000000000005f RSI: 0000000000000000 RDI: 0000000000000066\n RBP: 0000716157ffed90 R08: 0000000000008000 R09: 0000000000000001\n R10: 0000000000000000 R11: 0000000000000246 R12: ffffffffffffff00\n R13: 0000000000000021 R14: 0000000000000000 R15: 00007fff89799c40\n </TASK>\n\nThe TIPC_DUMP_ALL tracepoints in tipc_sk_enqueue() also dump\nsk_receive_queue and can therefore dereference skbs that the socket\nowner has already dequeued or freed. Restrict these dumps to\nTIPC_DUMP_SK_BKLGQ, which matches the queue protected by the held\nspinlock.\n\nKeep the change limited to the enqueue path, where the unsafe queue dump\nis reachable while the socket is owned by user context."
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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 - tipc_sk_enqueue() is invoked from tipc_sk_rcv() on inbound TIPC traffic (tipc_rcv()/tipc_link_rcv() from UDP/Ethernet bearers) and on loopback xmit; a remote cluster peer can deliver packets that hit the enqueue trace path while the destination socket is user-owned.\nAC:L - This is a controllable race between enqueue-time TIPC_DUMP_ALL trace dumps of sk_receive_queue and the socket owner dequeuing/freeing those skbs; the attacker drives both sides via concurrent recvmsg/splice/sendmsg threads or by flooding TIPC messages while a receiver holds lock_sock().\nPR:N - TIPC data-plane delivery to an existing socket/port needs no authentication or victim credentials; any local user may open AF_TIPC sockets (including via user namespaces with CAP_NET_ADMIN), and default sk_filter sysctl matches all sockets once trace events are enabled.\nUI:N - Exploitation needs no victim interaction beyond normal socket/cluster I/O; the attacker controls message injection and thread timing without requiring mounts, prompts, or other deliberate user actions.\nS:U - The flaw is a kernel sk_buff use-after-free in the TIPC socket path and its impact stays within the kernel security authority; it does not by itself cross VM, IOMMU, or hypervisor isolation boundaries.\nC:H - KASAN reported __asan_report_load4 in tipc_skb_dump() reading freed skb/message fields from sk_receive_queue; this UAF read of attacker-influenced heap objects can disclose kernel memory and supports further info-leak exploitation.\nI:H - Concurrent enqueue tracing walks queue pointers while skbs are freed by the socket owner, creating a classic UAF on sk_buff slabs that can be groomed for arbitrary kernel memory corruption and privilege escalation.\nA:H - Dereferencing freed skbs during tipc_list_dump()/tipc_skb_dump() can oops or panic the kernel; UAF in the TIPC receive/enqueue path is a high-availability risk even when not fully weaponized 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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"net/tipc/socket.c"
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],
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"versions": [
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{
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"version": "01e661ebfbad40e6280fb8ec25f2861d39ba4387",
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"lessThan": "ae5d0d9ce767b20a5580bb6dc5e06f3e1b8a0fb0",
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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": "01e661ebfbad40e6280fb8ec25f2861d39ba4387",
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"lessThan": "273ff83c49b82e4267373adbe629e6ee8aeaa16c",
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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": "01e661ebfbad40e6280fb8ec25f2861d39ba4387",
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"lessThan": "258fb15b30db4f3941ab335d5e02f744baf1da54",
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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": "01e661ebfbad40e6280fb8ec25f2861d39ba4387",
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"lessThan": "12876864f9de5fa6f611a30c6c17e405a773bf0a",
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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": "01e661ebfbad40e6280fb8ec25f2861d39ba4387",
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"lessThan": "b9e100815f4b55e9ccaf6af9a3aba173eb13d381",
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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": "01e661ebfbad40e6280fb8ec25f2861d39ba4387",
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"lessThan": "61a55fa24a5d737436018764a647fe5b6cb36371",
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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": "01e661ebfbad40e6280fb8ec25f2861d39ba4387",
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"lessThan": "6acbbe54215d5f4251593000cff2bf51d6748713",
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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": "01e661ebfbad40e6280fb8ec25f2861d39ba4387",
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"lessThan": "acd7df8d955480a6f6e5bb809da67b1500cc3cf4",
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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/tipc/socket.c"
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],
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"versions": [
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{
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"version": "5.0",
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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": "5.0",
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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": "5.10.266",
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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": "5.15.217",
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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": "6.1.184",
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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": "6.6.148",
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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": "6.12.101",
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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": "6.18.40",
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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": "7.1.5",
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"lessThanOrEqual": "7.1.*",
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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": "7.2",
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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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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.0",
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"versionEndExcluding": "5.10.266"
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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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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.0",
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},
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{
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.0",
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}
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]
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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/ae5d0d9ce767b20a5580bb6dc5e06f3e1b8a0fb0"
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},
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{
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"url": "https://git.kernel.org/stable/c/273ff83c49b82e4267373adbe629e6ee8aeaa16c"
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},
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{
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"url": "https://git.kernel.org/stable/c/258fb15b30db4f3941ab335d5e02f744baf1da54"
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},
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{
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"url": "https://git.kernel.org/stable/c/12876864f9de5fa6f611a30c6c17e405a773bf0a"
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},
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{
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"url": "https://git.kernel.org/stable/c/b9e100815f4b55e9ccaf6af9a3aba173eb13d381"
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},
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{
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"url": "https://git.kernel.org/stable/c/61a55fa24a5d737436018764a647fe5b6cb36371"
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},
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{
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"url": "https://git.kernel.org/stable/c/6acbbe54215d5f4251593000cff2bf51d6748713"
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},
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{
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"url": "https://git.kernel.org/stable/c/acd7df8d955480a6f6e5bb809da67b1500cc3cf4"
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}
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],
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"title": "tipc: restrict socket queue dumps in enqueue tracepoints",
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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-2026-72299",
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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": "total"
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}
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],
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"version": "2.0.3",
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"timestamp": "2026-10-16T18:46:06.662834Z"
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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": "2026-10-16T18:55:15.859Z"
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}
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}
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]
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}
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} |