CVE-2024-26615 (GCVE-0-2024-26615)

Vulnerability from cvelistv5 – Published: 2024-02-29 15:52 – Updated: 2026-05-11 20:00
VLAI?
Title
net/smc: fix illegal rmb_desc access in SMC-D connection dump
Summary
In the Linux kernel, the following vulnerability has been resolved: net/smc: fix illegal rmb_desc access in SMC-D connection dump A crash was found when dumping SMC-D connections. It can be reproduced by following steps: - run nginx/wrk test: smc_run nginx smc_run wrk -t 16 -c 1000 -d <duration> -H 'Connection: Close' <URL> - continuously dump SMC-D connections in parallel: watch -n 1 'smcss -D' BUG: kernel NULL pointer dereference, address: 0000000000000030 CPU: 2 PID: 7204 Comm: smcss Kdump: loaded Tainted: G E 6.7.0+ #55 RIP: 0010:__smc_diag_dump.constprop.0+0x5e5/0x620 [smc_diag] Call Trace: <TASK> ? __die+0x24/0x70 ? page_fault_oops+0x66/0x150 ? exc_page_fault+0x69/0x140 ? asm_exc_page_fault+0x26/0x30 ? __smc_diag_dump.constprop.0+0x5e5/0x620 [smc_diag] ? __kmalloc_node_track_caller+0x35d/0x430 ? __alloc_skb+0x77/0x170 smc_diag_dump_proto+0xd0/0xf0 [smc_diag] smc_diag_dump+0x26/0x60 [smc_diag] netlink_dump+0x19f/0x320 __netlink_dump_start+0x1dc/0x300 smc_diag_handler_dump+0x6a/0x80 [smc_diag] ? __pfx_smc_diag_dump+0x10/0x10 [smc_diag] sock_diag_rcv_msg+0x121/0x140 ? __pfx_sock_diag_rcv_msg+0x10/0x10 netlink_rcv_skb+0x5a/0x110 sock_diag_rcv+0x28/0x40 netlink_unicast+0x22a/0x330 netlink_sendmsg+0x1f8/0x420 __sock_sendmsg+0xb0/0xc0 ____sys_sendmsg+0x24e/0x300 ? copy_msghdr_from_user+0x62/0x80 ___sys_sendmsg+0x7c/0xd0 ? __do_fault+0x34/0x160 ? do_read_fault+0x5f/0x100 ? do_fault+0xb0/0x110 ? __handle_mm_fault+0x2b0/0x6c0 __sys_sendmsg+0x4d/0x80 do_syscall_64+0x69/0x180 entry_SYSCALL_64_after_hwframe+0x6e/0x76 It is possible that the connection is in process of being established when we dump it. Assumed that the connection has been registered in a link group by smc_conn_create() but the rmb_desc has not yet been initialized by smc_buf_create(), thus causing the illegal access to conn->rmb_desc. So fix it by checking before dump.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 4b1b7d3b30a6d32ac1a1dcede284e76ef8a8542d , < 27aea64838914c6122db5b8bd4bed865c9736f22 (git)
Affected: 4b1b7d3b30a6d32ac1a1dcede284e76ef8a8542d , < 1fea9969b81c67d0cb1611d1b8b7d19049d937be (git)
Affected: 4b1b7d3b30a6d32ac1a1dcede284e76ef8a8542d , < 5fed92ca32eafbfae8b6bee8ca34cca71c6a8b6d (git)
Affected: 4b1b7d3b30a6d32ac1a1dcede284e76ef8a8542d , < 68b888d51ac82f2b96bf5e077a31d76afcdef25a (git)
Affected: 4b1b7d3b30a6d32ac1a1dcede284e76ef8a8542d , < 6994dba06321e3c48fdad0ba796a063d9d82183a (git)
Affected: 4b1b7d3b30a6d32ac1a1dcede284e76ef8a8542d , < a164c2922675d7051805cdaf2b07daffe44f20d9 (git)
Affected: 4b1b7d3b30a6d32ac1a1dcede284e76ef8a8542d , < 8f3f9186e5bb96a9c9654c41653210e3ea7e48a6 (git)
Affected: 4b1b7d3b30a6d32ac1a1dcede284e76ef8a8542d , < dbc153fd3c142909e564bb256da087e13fbf239c (git)
Create a notification for this product.
Linux Linux Affected: 4.19
Unaffected: 0 , < 4.19 (semver)
Unaffected: 4.19.307 , ≤ 4.19.* (semver)
Unaffected: 5.4.269 , ≤ 5.4.* (semver)
Unaffected: 5.10.210 , ≤ 5.10.* (semver)
Unaffected: 5.15.149 , ≤ 5.15.* (semver)
Unaffected: 6.1.76 , ≤ 6.1.* (semver)
Unaffected: 6.6.15 , ≤ 6.6.* (semver)
Unaffected: 6.7.3 , ≤ 6.7.* (semver)
Unaffected: 6.8 , ≤ * (original_commit_for_fix)
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      "descriptions": "[{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnet/smc: fix illegal rmb_desc access in SMC-D connection dump\\n\\nA crash was found when dumping SMC-D connections. It can be reproduced\\nby following steps:\\n\\n- run nginx/wrk test:\\n  smc_run nginx\\n  smc_run wrk -t 16 -c 1000 -d \u003cduration\u003e -H \u0027Connection: Close\u0027 \u003cURL\u003e\\n\\n- continuously dump SMC-D connections in parallel:\\n  watch -n 1 \u0027smcss -D\u0027\\n\\n BUG: kernel NULL pointer dereference, address: 0000000000000030\\n CPU: 2 PID: 7204 Comm: smcss Kdump: loaded Tainted: G\\tE      6.7.0+ #55\\n RIP: 0010:__smc_diag_dump.constprop.0+0x5e5/0x620 [smc_diag]\\n Call Trace:\\n  \u003cTASK\u003e\\n  ? __die+0x24/0x70\\n  ? page_fault_oops+0x66/0x150\\n  ? exc_page_fault+0x69/0x140\\n  ? asm_exc_page_fault+0x26/0x30\\n  ? __smc_diag_dump.constprop.0+0x5e5/0x620 [smc_diag]\\n  ? __kmalloc_node_track_caller+0x35d/0x430\\n  ? __alloc_skb+0x77/0x170\\n  smc_diag_dump_proto+0xd0/0xf0 [smc_diag]\\n  smc_diag_dump+0x26/0x60 [smc_diag]\\n  netlink_dump+0x19f/0x320\\n  __netlink_dump_start+0x1dc/0x300\\n  smc_diag_handler_dump+0x6a/0x80 [smc_diag]\\n  ? __pfx_smc_diag_dump+0x10/0x10 [smc_diag]\\n  sock_diag_rcv_msg+0x121/0x140\\n  ? __pfx_sock_diag_rcv_msg+0x10/0x10\\n  netlink_rcv_skb+0x5a/0x110\\n  sock_diag_rcv+0x28/0x40\\n  netlink_unicast+0x22a/0x330\\n  netlink_sendmsg+0x1f8/0x420\\n  __sock_sendmsg+0xb0/0xc0\\n  ____sys_sendmsg+0x24e/0x300\\n  ? copy_msghdr_from_user+0x62/0x80\\n  ___sys_sendmsg+0x7c/0xd0\\n  ? __do_fault+0x34/0x160\\n  ? do_read_fault+0x5f/0x100\\n  ? do_fault+0xb0/0x110\\n  ? __handle_mm_fault+0x2b0/0x6c0\\n  __sys_sendmsg+0x4d/0x80\\n  do_syscall_64+0x69/0x180\\n  entry_SYSCALL_64_after_hwframe+0x6e/0x76\\n\\nIt is possible that the connection is in process of being established\\nwhen we dump it. Assumed that the connection has been registered in a\\nlink group by smc_conn_create() but the rmb_desc has not yet been\\ninitialized by smc_buf_create(), thus causing the illegal access to\\nconn-\u003ermb_desc. So fix it by checking before dump.\"}, {\"lang\": \"es\", \"value\": \"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net/smc: corrige el acceso ilegal a rmb_desc en el volcado de conexiones SMC-D Se encontr\\u00f3 un bloqueo al volcar conexiones SMC-D. Se puede reproducir mediante los siguientes pasos: - ejecute la prueba nginx/wrk: smc_run nginx smc_run wrk -t 16 -c 1000 -d  -H \u0027Conexi\\u00f3n: Cerrar\u0027  - volcar continuamente las conexiones SMC-D en paralelo: watch -n 1 \u0027smcss -D\u0027 ERROR: desreferencia del puntero NULL del kernel, direcci\\u00f3n: 00000000000000030 CPU: 2 PID: 7204 Comm: smcss Kdump: cargado Contaminado: GE 6.7.0+ #55 RIP: 0010:__smc_diag_dump.constprop.0+ 0x5e5/0x620 [smc_diag] Seguimiento de llamadas: ? __morir+0x24/0x70 ? page_fault_oops+0x66/0x150? exc_page_fault+0x69/0x140? asm_exc_page_fault+0x26/0x30? __smc_diag_dump.constprop.0+0x5e5/0x620 [smc_diag] ? __kmalloc_node_track_caller+0x35d/0x430 ? __alloc_skb+0x77/0x170 smc_diag_dump_proto+0xd0/0xf0 [smc_diag] smc_diag_dump+0x26/0x60 [smc_diag] netlink_dump+0x19f/0x320 __netlink_dump_start+0x1dc/0x300 smc_diag_handler_dump+ 0x6a/0x80 [smc_diag] ? __pfx_smc_diag_dump+0x10/0x10 [smc_diag] sock_diag_rcv_msg+0x121/0x140 ? __pfx_sock_diag_rcv_msg+0x10/0x10 netlink_rcv_skb+0x5a/0x110 sock_diag_rcv+0x28/0x40 netlink_unicast+0x22a/0x330 netlink_sendmsg+0x1f8/0x420 __sock_sendmsg+0xb0/0xc0 ____s ys_sendmsg+0x24e/0x300? copy_msghdr_from_user+0x62/0x80 ___sys_sendmsg+0x7c/0xd0 ? __do_fault+0x34/0x160? do_read_fault+0x5f/0x100? do_fault+0xb0/0x110? __handle_mm_fault+0x2b0/0x6c0 __sys_sendmsg+0x4d/0x80 do_syscall_64+0x69/0x180 Entry_SYSCALL_64_after_hwframe+0x6e/0x76 Es posible que la conexi\\u00f3n est\\u00e9 en proceso de establecerse cuando la volcamos. Se supone que la conexi\\u00f3n ha sido registrada en un grupo de enlaces por smc_conn_create() pero rmb_desc a\\u00fan no ha sido inicializado por smc_buf_create(), lo que provoca el acceso ilegal a conn-\u0026gt;rmb_desc. As\\u00ed que solucionelo comprobando antes del volcado.\"}]",
      "id": "CVE-2024-26615",
      "lastModified": "2024-12-12T15:31:02.167",
      "metrics": "{\"cvssMetricV31\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\", \"baseScore\": 5.5, \"baseSeverity\": \"MEDIUM\", \"attackVector\": \"LOCAL\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"LOW\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"NONE\", \"integrityImpact\": \"NONE\", \"availabilityImpact\": \"HIGH\"}, \"exploitabilityScore\": 1.8, \"impactScore\": 3.6}]}",
      "published": "2024-03-11T18:15:19.337",
      "references": "[{\"url\": \"https://git.kernel.org/stable/c/1fea9969b81c67d0cb1611d1b8b7d19049d937be\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/27aea64838914c6122db5b8bd4bed865c9736f22\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/5fed92ca32eafbfae8b6bee8ca34cca71c6a8b6d\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/68b888d51ac82f2b96bf5e077a31d76afcdef25a\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/6994dba06321e3c48fdad0ba796a063d9d82183a\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/8f3f9186e5bb96a9c9654c41653210e3ea7e48a6\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/a164c2922675d7051805cdaf2b07daffe44f20d9\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/dbc153fd3c142909e564bb256da087e13fbf239c\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/1fea9969b81c67d0cb1611d1b8b7d19049d937be\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/27aea64838914c6122db5b8bd4bed865c9736f22\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/5fed92ca32eafbfae8b6bee8ca34cca71c6a8b6d\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/68b888d51ac82f2b96bf5e077a31d76afcdef25a\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/6994dba06321e3c48fdad0ba796a063d9d82183a\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/8f3f9186e5bb96a9c9654c41653210e3ea7e48a6\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/a164c2922675d7051805cdaf2b07daffe44f20d9\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/dbc153fd3c142909e564bb256da087e13fbf239c\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}]",
      "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "vulnStatus": "Analyzed",
      "weaknesses": "[{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-476\"}]}]"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-26615\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-03-11T18:15:19.337\",\"lastModified\":\"2024-12-12T15:31:02.167\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnet/smc: fix illegal rmb_desc access in SMC-D connection dump\\n\\nA crash was found when dumping SMC-D connections. It can be reproduced\\nby following steps:\\n\\n- run nginx/wrk test:\\n  smc_run nginx\\n  smc_run wrk -t 16 -c 1000 -d \u003cduration\u003e -H \u0027Connection: Close\u0027 \u003cURL\u003e\\n\\n- continuously dump SMC-D connections in parallel:\\n  watch -n 1 \u0027smcss -D\u0027\\n\\n BUG: kernel NULL pointer dereference, address: 0000000000000030\\n CPU: 2 PID: 7204 Comm: smcss Kdump: loaded Tainted: G\\tE      6.7.0+ #55\\n RIP: 0010:__smc_diag_dump.constprop.0+0x5e5/0x620 [smc_diag]\\n Call Trace:\\n  \u003cTASK\u003e\\n  ? __die+0x24/0x70\\n  ? page_fault_oops+0x66/0x150\\n  ? exc_page_fault+0x69/0x140\\n  ? asm_exc_page_fault+0x26/0x30\\n  ? __smc_diag_dump.constprop.0+0x5e5/0x620 [smc_diag]\\n  ? __kmalloc_node_track_caller+0x35d/0x430\\n  ? __alloc_skb+0x77/0x170\\n  smc_diag_dump_proto+0xd0/0xf0 [smc_diag]\\n  smc_diag_dump+0x26/0x60 [smc_diag]\\n  netlink_dump+0x19f/0x320\\n  __netlink_dump_start+0x1dc/0x300\\n  smc_diag_handler_dump+0x6a/0x80 [smc_diag]\\n  ? __pfx_smc_diag_dump+0x10/0x10 [smc_diag]\\n  sock_diag_rcv_msg+0x121/0x140\\n  ? __pfx_sock_diag_rcv_msg+0x10/0x10\\n  netlink_rcv_skb+0x5a/0x110\\n  sock_diag_rcv+0x28/0x40\\n  netlink_unicast+0x22a/0x330\\n  netlink_sendmsg+0x1f8/0x420\\n  __sock_sendmsg+0xb0/0xc0\\n  ____sys_sendmsg+0x24e/0x300\\n  ? copy_msghdr_from_user+0x62/0x80\\n  ___sys_sendmsg+0x7c/0xd0\\n  ? __do_fault+0x34/0x160\\n  ? do_read_fault+0x5f/0x100\\n  ? do_fault+0xb0/0x110\\n  ? __handle_mm_fault+0x2b0/0x6c0\\n  __sys_sendmsg+0x4d/0x80\\n  do_syscall_64+0x69/0x180\\n  entry_SYSCALL_64_after_hwframe+0x6e/0x76\\n\\nIt is possible that the connection is in process of being established\\nwhen we dump it. Assumed that the connection has been registered in a\\nlink group by smc_conn_create() but the rmb_desc has not yet been\\ninitialized by smc_buf_create(), thus causing the illegal access to\\nconn-\u003ermb_desc. So fix it by checking before dump.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net/smc: corrige el acceso ilegal a rmb_desc en el volcado de conexiones SMC-D Se encontr\u00f3 un bloqueo al volcar conexiones SMC-D. Se puede reproducir mediante los siguientes pasos: - ejecute la prueba nginx/wrk: smc_run nginx smc_run wrk -t 16 -c 1000 -d  -H \u0027Conexi\u00f3n: Cerrar\u0027  - volcar continuamente las conexiones SMC-D en paralelo: watch -n 1 \u0027smcss -D\u0027 ERROR: desreferencia del puntero NULL del kernel, direcci\u00f3n: 00000000000000030 CPU: 2 PID: 7204 Comm: smcss Kdump: cargado Contaminado: GE 6.7.0+ #55 RIP: 0010:__smc_diag_dump.constprop.0+ 0x5e5/0x620 [smc_diag] Seguimiento de llamadas: ? __morir+0x24/0x70 ? page_fault_oops+0x66/0x150? exc_page_fault+0x69/0x140? asm_exc_page_fault+0x26/0x30? __smc_diag_dump.constprop.0+0x5e5/0x620 [smc_diag] ? __kmalloc_node_track_caller+0x35d/0x430 ? __alloc_skb+0x77/0x170 smc_diag_dump_proto+0xd0/0xf0 [smc_diag] smc_diag_dump+0x26/0x60 [smc_diag] netlink_dump+0x19f/0x320 __netlink_dump_start+0x1dc/0x300 smc_diag_handler_dump+ 0x6a/0x80 [smc_diag] ? __pfx_smc_diag_dump+0x10/0x10 [smc_diag] sock_diag_rcv_msg+0x121/0x140 ? __pfx_sock_diag_rcv_msg+0x10/0x10 netlink_rcv_skb+0x5a/0x110 sock_diag_rcv+0x28/0x40 netlink_unicast+0x22a/0x330 netlink_sendmsg+0x1f8/0x420 __sock_sendmsg+0xb0/0xc0 ____s ys_sendmsg+0x24e/0x300? copy_msghdr_from_user+0x62/0x80 ___sys_sendmsg+0x7c/0xd0 ? __do_fault+0x34/0x160? do_read_fault+0x5f/0x100? do_fault+0xb0/0x110? __handle_mm_fault+0x2b0/0x6c0 __sys_sendmsg+0x4d/0x80 do_syscall_64+0x69/0x180 Entry_SYSCALL_64_after_hwframe+0x6e/0x76 Es posible que la conexi\u00f3n est\u00e9 en proceso de establecerse cuando la volcamos. Se supone que la conexi\u00f3n ha sido registrada en un grupo de enlaces por smc_conn_create() pero rmb_desc a\u00fan no ha sido inicializado por smc_buf_create(), lo que provoca el acceso ilegal a conn-\u0026gt;rmb_desc. As\u00ed que solucionelo comprobando antes del 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    "vulnrichment": {
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{\"title\": \"net/smc: fix illegal rmb_desc access in SMC-D connection dump\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"4b1b7d3b30a6d32ac1a1dcede284e76ef8a8542d\", \"lessThan\": \"27aea64838914c6122db5b8bd4bed865c9736f22\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"4b1b7d3b30a6d32ac1a1dcede284e76ef8a8542d\", \"lessThan\": \"1fea9969b81c67d0cb1611d1b8b7d19049d937be\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"4b1b7d3b30a6d32ac1a1dcede284e76ef8a8542d\", \"lessThan\": \"5fed92ca32eafbfae8b6bee8ca34cca71c6a8b6d\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"4b1b7d3b30a6d32ac1a1dcede284e76ef8a8542d\", \"lessThan\": \"68b888d51ac82f2b96bf5e077a31d76afcdef25a\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": 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in SMC-D connection dump\\n\\nA crash was found when dumping SMC-D connections. It can be reproduced\\nby following steps:\\n\\n- run nginx/wrk test:\\n  smc_run nginx\\n  smc_run wrk -t 16 -c 1000 -d \u003cduration\u003e -H \u0027Connection: Close\u0027 \u003cURL\u003e\\n\\n- continuously dump SMC-D connections in parallel:\\n  watch -n 1 \u0027smcss -D\u0027\\n\\n BUG: kernel NULL pointer dereference, address: 0000000000000030\\n CPU: 2 PID: 7204 Comm: smcss Kdump: loaded Tainted: G\\tE      6.7.0+ #55\\n RIP: 0010:__smc_diag_dump.constprop.0+0x5e5/0x620 [smc_diag]\\n Call Trace:\\n  \u003cTASK\u003e\\n  ? __die+0x24/0x70\\n  ? page_fault_oops+0x66/0x150\\n  ? exc_page_fault+0x69/0x140\\n  ? asm_exc_page_fault+0x26/0x30\\n  ? __smc_diag_dump.constprop.0+0x5e5/0x620 [smc_diag]\\n  ? __kmalloc_node_track_caller+0x35d/0x430\\n  ? __alloc_skb+0x77/0x170\\n  smc_diag_dump_proto+0xd0/0xf0 [smc_diag]\\n  smc_diag_dump+0x26/0x60 [smc_diag]\\n  netlink_dump+0x19f/0x320\\n  __netlink_dump_start+0x1dc/0x300\\n  smc_diag_handler_dump+0x6a/0x80 [smc_diag]\\n  ? __pfx_smc_diag_dump+0x10/0x10 [smc_diag]\\n  sock_diag_rcv_msg+0x121/0x140\\n  ? __pfx_sock_diag_rcv_msg+0x10/0x10\\n  netlink_rcv_skb+0x5a/0x110\\n  sock_diag_rcv+0x28/0x40\\n  netlink_unicast+0x22a/0x330\\n  netlink_sendmsg+0x1f8/0x420\\n  __sock_sendmsg+0xb0/0xc0\\n  ____sys_sendmsg+0x24e/0x300\\n  ? copy_msghdr_from_user+0x62/0x80\\n  ___sys_sendmsg+0x7c/0xd0\\n  ? __do_fault+0x34/0x160\\n  ? do_read_fault+0x5f/0x100\\n  ? do_fault+0xb0/0x110\\n  ? __handle_mm_fault+0x2b0/0x6c0\\n  __sys_sendmsg+0x4d/0x80\\n  do_syscall_64+0x69/0x180\\n  entry_SYSCALL_64_after_hwframe+0x6e/0x76\\n\\nIt is possible that the connection is in process of being established\\nwhen we dump it. Assumed that the connection has been registered in a\\nlink group by smc_conn_create() but the rmb_desc has not yet been\\ninitialized by smc_buf_create(), thus causing the illegal access to\\nconn-\u003ermb_desc. So fix it by checking before dump.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.19.307\", \"versionStartIncluding\": \"4.19\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.269\", \"versionStartIncluding\": \"4.19\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.210\", \"versionStartIncluding\": \"4.19\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.149\", \"versionStartIncluding\": \"4.19\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.76\", \"versionStartIncluding\": \"4.19\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.15\", \"versionStartIncluding\": \"4.19\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.7.3\", \"versionStartIncluding\": \"4.19\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.8\", \"versionStartIncluding\": \"4.19\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-05-11T20:00:49.787Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-26615\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-05-11T20:00:49.787Z\", \"dateReserved\": \"2024-02-19T14:20:24.131Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-02-29T15:52:18.843Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


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Taxonomy of the tags.




Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.