{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2023-52745", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-05-21T15:19:24.233Z", "datePublished": "2024-05-21T15:23:06.595Z", "dateUpdated": "2026-08-05T09:11:11.596Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T09:11:11.596Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nIB/IPoIB: Fix legacy IPoIB due to wrong number of queues\n\nThe cited commit creates child PKEY interfaces over netlink will\nmultiple tx and rx queues, but some devices doesn't support more than 1\ntx and 1 rx queues. This causes to a crash when traffic is sent over the\nPKEY interface due to the parent having a single queue but the child\nhaving multiple queues.\n\nThis patch fixes the number of queues to 1 for legacy IPoIB at the\nearliest possible point in time.\n\nBUG: kernel NULL pointer dereference, address: 000000000000036b\nPGD 0 P4D 0\nOops: 0000 [#1] SMP\nCPU: 4 PID: 209665 Comm: python3 Not tainted 6.1.0_for_upstream_min_debug_2022_12_12_17_02 #1\nHardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014\nRIP: 0010:kmem_cache_alloc+0xcb/0x450\nCode: ce 7e 49 8b 50 08 49 83 78 10 00 4d 8b 28 0f 84 cb 02 00 00 4d 85 ed 0f 84 c2 02 00 00 41 8b 44 24 28 48 8d 4a\n01 49 8b 3c 24 <49> 8b 5c 05 00 4c 89 e8 65 48 0f c7 0f 0f 94 c0 84 c0 74 b8 41 8b\nRSP: 0018:ffff88822acbbab8 EFLAGS: 00010202\nRAX: 0000000000000070 RBX: ffff8881c28e3e00 RCX: 00000000064f8dae\nRDX: 00000000064f8dad RSI: 0000000000000a20 RDI: 0000000000030d00\nRBP: 0000000000000a20 R08: ffff8882f5d30d00 R09: ffff888104032f40\nR10: ffff88810fade828 R11: 736f6d6570736575 R12: ffff88810081c000\nR13: 00000000000002fb R14: ffffffff817fc865 R15: 0000000000000000\nFS: 00007f9324ff9700(0000) GS:ffff8882f5d00000(0000) knlGS:0000000000000000\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 000000000000036b CR3: 00000001125af004 CR4: 0000000000370ea0\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\nCall Trace:\n \n skb_clone+0x55/0xd0\n ip6_finish_output2+0x3fe/0x690\n ip6_finish_output+0xfa/0x310\n ip6_send_skb+0x1e/0x60\n udp_v6_send_skb+0x1e5/0x420\n udpv6_sendmsg+0xb3c/0xe60\n ? ip_mc_finish_output+0x180/0x180\n ? __switch_to_asm+0x3a/0x60\n ? __switch_to_asm+0x34/0x60\n sock_sendmsg+0x33/0x40\n __sys_sendto+0x103/0x160\n ? _copy_to_user+0x21/0x30\n ? kvm_clock_get_cycles+0xd/0x10\n ? ktime_get_ts64+0x49/0xe0\n __x64_sys_sendto+0x25/0x30\n do_syscall_64+0x3d/0x90\n entry_SYSCALL_64_after_hwframe+0x46/0xb0\nRIP: 0033:0x7f9374f1ed14\nCode: 42 41 f8 ff 44 8b 4c 24 2c 4c 8b 44 24 20 89 c5 44 8b 54 24 28 48 8b 54 24 18 b8 2c 00 00 00 48 8b 74 24 10 8b\n7c 24 08 0f 05 <48> 3d 00 f0 ff ff 77 34 89 ef 48 89 44 24 08 e8 68 41 f8 ff 48 8b\nRSP: 002b:00007f9324ff7bd0 EFLAGS: 00000293 ORIG_RAX: 000000000000002c\nRAX: ffffffffffffffda RBX: 00007f9324ff7cc8 RCX: 00007f9374f1ed14\nRDX: 00000000000002fb RSI: 00007f93000052f0 RDI: 0000000000000030\nRBP: 0000000000000000 R08: 00007f9324ff7d40 R09: 000000000000001c\nR10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000\nR13: 000000012a05f200 R14: 0000000000000001 R15: 00007f9374d57bdc\n " } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:L - The bug is reached by creating an IPoIB PKEY child via RTNL (`ip link add … type ipoib`) and sending traffic with local sendto/netlink; it is not triggered by remote InfiniBand/IP packet parsing.\nAC:L - On legacy IPoIB, netlink children are deterministically given multiple TX queues while sharing one unlocked tx_ring; an attacker who sends from multiple threads controls both sides of the resulting concurrent-xmit race, so no attacker-uncontrollable condition is required.\nPR:L - Child creation needs only CAP_NET_ADMIN in the netns user_ns (netlink_net_capable), which is available via user namespaces/containers with a delegated IPoIB parent; once such a child exists from normal PKEY setup, an unprivileged local sendto triggers the corruption.\nUI:N - The attacker creates the PKEY child and/or sends the traffic themselves; no separate victim mount, open, or other interaction is required.\nS:U - Impact is a host-kernel oops/memory corruption within the same kernel security authority, with no VM escape, IOMMU bypass, or other cross-boundary effect.\nC:H - Multiple netdev TX queues concurrently enter legacy ipoib_send on one shared tx_ring/tx_head, causing skb UAF/double-free and slab freelist corruption (as in the kmem_cache_alloc oops), which yields a high-impact read primitive.\nI:H - The same concurrent multi-queue use of the single tx_ring is memory corruption/UAF that can be turned into heap control and arbitrary write or control-flow hijack, not a pure crash-only fault.\nA:H - The reported path is a kernel NULL-pointer oops/panic when traffic is sent over the misconfigured PKEY interface, which is High availability impact." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/infiniband/ulp/ipoib/ipoib_main.c" ], "versions": [ { "version": "d4bf3fcccd188db9f3310d93472041cdefba97bf", "lessThan": "4a779187db39b2f32d048a752573e56e4e77807f", "status": "affected", "versionType": "git" }, { "version": "d21714134505bc23daa0455b295f3b63730b3b42", "lessThan": "b1afb666c32931667c15ad1b58e7203f0119dcaf", "status": "affected", "versionType": "git" }, { "version": "ca48174a7643a7e6dd31c4338c5cde49552e138e", "lessThan": "1b4ef90cbcfa603b3bb536fbd6f261197012b6f6", "status": "affected", "versionType": "git" }, { "version": "ee0e9b2c4b9c35837553124b4912230a7e7c7212", "lessThan": "7197460dcd43ff0e4a502ba855dd82d37c2848cc", "status": "affected", "versionType": "git" }, { "version": "dbc94a0fb81771a38733c0e8f2ea8c4fa6934dc1", "lessThan": "e632291a2dbce45a24cddeb5fe28fe71d724ba43", "status": "affected", "versionType": "git" }, { "version": "2aecfec735f16f99c059db956edfd95a32458d22", "status": "affected", "versionType": "git" }, { "version": "8fa3ee8ef185eb3e8be44f282721b05a03e6f888", "status": "affected", "versionType": "git" }, { "version": "bc2f5760b47cba4a76be9371806f8f10fccf71a9", "status": "affected", "versionType": "git" }, { "version": "bab775fa9c4f4b4da30c9cc99be4bec19fb01659", "status": "affected", "versionType": "git" }, { "version": "4.9.337", "lessThan": "4.10", "status": "affected", "versionType": "semver" }, { "version": "4.14.303", "lessThan": "4.15", "status": "affected", "versionType": "semver" }, { "version": "4.19.270", "lessThan": "4.20", "status": "affected", "versionType": "semver" }, { "version": "6.0.16", "lessThan": "6.1", "status": "affected", "versionType": "semver" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/infiniband/ulp/ipoib/ipoib_main.c" ], "versions": [ { "version": "5.4.229", "lessThan": "5.4.232", "status": "affected", "versionType": "semver" }, { "version": "5.10.163", "lessThan": "5.10.168", "status": "affected", "versionType": "semver" }, { "version": "5.15.86", "lessThan": "5.15.94", "status": "affected", "versionType": "semver" }, { "version": "6.1.2", "lessThan": "6.1.12", "status": "affected", "versionType": "semver" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.4.229", "versionEndExcluding": "5.4.232" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10.163", "versionEndExcluding": "5.10.168" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15.86", "versionEndExcluding": "5.15.94" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.1.2", "versionEndExcluding": "6.1.12" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.9.337" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.14.303" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.19.270" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0.16" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/4a779187db39b2f32d048a752573e56e4e77807f" }, { "url": "https://git.kernel.org/stable/c/b1afb666c32931667c15ad1b58e7203f0119dcaf" }, { "url": "https://git.kernel.org/stable/c/1b4ef90cbcfa603b3bb536fbd6f261197012b6f6" }, { "url": "https://git.kernel.org/stable/c/7197460dcd43ff0e4a502ba855dd82d37c2848cc" }, { "url": "https://git.kernel.org/stable/c/e632291a2dbce45a24cddeb5fe28fe71d724ba43" } ], "title": "IB/IPoIB: Fix legacy IPoIB due to wrong number of queues", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T23:11:35.591Z" }, "title": "CVE Program Container", "references": [ { "url": "https://git.kernel.org/stable/c/4a779187db39b2f32d048a752573e56e4e77807f", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/b1afb666c32931667c15ad1b58e7203f0119dcaf", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/1b4ef90cbcfa603b3bb536fbd6f261197012b6f6", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/7197460dcd43ff0e4a502ba855dd82d37c2848cc", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/e632291a2dbce45a24cddeb5fe28fe71d724ba43", "tags": [ "x_transferred" ] } ] }, { "metrics": [ { "other": { "type": "ssvc", "content": { "id": "CVE-2023-52745", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "version": "2.0.3", "timestamp": "2024-09-10T15:37:28.815664Z" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-09-11T17:33:34.534Z" } } ] } }