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

Vulnerability from cvelistv5 – Published: 2024-02-29 15:52 – Updated: 2025-05-04 08:52
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
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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Show details on NVD website

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\"4b1b7d3b30a6d32ac1a1dcede284e76ef8a8542d\", \"lessThan\": \"6994dba06321e3c48fdad0ba796a063d9d82183a\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"4b1b7d3b30a6d32ac1a1dcede284e76ef8a8542d\", \"lessThan\": \"a164c2922675d7051805cdaf2b07daffe44f20d9\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"4b1b7d3b30a6d32ac1a1dcede284e76ef8a8542d\", \"lessThan\": \"8f3f9186e5bb96a9c9654c41653210e3ea7e48a6\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"4b1b7d3b30a6d32ac1a1dcede284e76ef8a8542d\", \"lessThan\": \"dbc153fd3c142909e564bb256da087e13fbf239c\", \"versionType\": \"git\"}], \"programFiles\": [\"net/smc/smc_diag.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"4.19\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"4.19\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"4.19.307\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"4.19.*\"}, {\"status\": \"unaffected\", \"version\": \"5.4.269\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.4.*\"}, {\"status\": \"unaffected\", \"version\": \"5.10.210\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.149\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.76\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.15\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.7.3\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.7.*\"}, {\"status\": \"unaffected\", \"version\": \"6.8\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"net/smc/smc_diag.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/27aea64838914c6122db5b8bd4bed865c9736f22\"}, {\"url\": \"https://git.kernel.org/stable/c/1fea9969b81c67d0cb1611d1b8b7d19049d937be\"}, {\"url\": \"https://git.kernel.org/stable/c/5fed92ca32eafbfae8b6bee8ca34cca71c6a8b6d\"}, {\"url\": \"https://git.kernel.org/stable/c/68b888d51ac82f2b96bf5e077a31d76afcdef25a\"}, {\"url\": \"https://git.kernel.org/stable/c/6994dba06321e3c48fdad0ba796a063d9d82183a\"}, {\"url\": \"https://git.kernel.org/stable/c/a164c2922675d7051805cdaf2b07daffe44f20d9\"}, {\"url\": \"https://git.kernel.org/stable/c/8f3f9186e5bb96a9c9654c41653210e3ea7e48a6\"}, {\"url\": \"https://git.kernel.org/stable/c/dbc153fd3c142909e564bb256da087e13fbf239c\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"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.\"}], \"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\": \"2025-05-04T08:52:21.717Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-26615\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-05-04T08:52:21.717Z\", \"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": "5.1"
    }
  }
}


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Sightings

Author Source Type Date

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.


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