CVE-2024-38589 (GCVE-0-2024-38589)

Vulnerability from cvelistv5 – Published: 2024-06-19 13:45 – Updated: 2025-11-04 17:21
VLAI?
Title
netrom: fix possible dead-lock in nr_rt_ioctl()
Summary
In the Linux kernel, the following vulnerability has been resolved: netrom: fix possible dead-lock in nr_rt_ioctl() syzbot loves netrom, and found a possible deadlock in nr_rt_ioctl [1] Make sure we always acquire nr_node_list_lock before nr_node_lock(nr_node) [1] WARNING: possible circular locking dependency detected 6.9.0-rc7-syzkaller-02147-g654de42f3fc6 #0 Not tainted ------------------------------------------------------ syz-executor350/5129 is trying to acquire lock: ffff8880186e2070 (&nr_node->node_lock){+...}-{2:2}, at: spin_lock_bh include/linux/spinlock.h:356 [inline] ffff8880186e2070 (&nr_node->node_lock){+...}-{2:2}, at: nr_node_lock include/net/netrom.h:152 [inline] ffff8880186e2070 (&nr_node->node_lock){+...}-{2:2}, at: nr_dec_obs net/netrom/nr_route.c:464 [inline] ffff8880186e2070 (&nr_node->node_lock){+...}-{2:2}, at: nr_rt_ioctl+0x1bb/0x1090 net/netrom/nr_route.c:697 but task is already holding lock: ffffffff8f7053b8 (nr_node_list_lock){+...}-{2:2}, at: spin_lock_bh include/linux/spinlock.h:356 [inline] ffffffff8f7053b8 (nr_node_list_lock){+...}-{2:2}, at: nr_dec_obs net/netrom/nr_route.c:462 [inline] ffffffff8f7053b8 (nr_node_list_lock){+...}-{2:2}, at: nr_rt_ioctl+0x10a/0x1090 net/netrom/nr_route.c:697 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (nr_node_list_lock){+...}-{2:2}: lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5754 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline] _raw_spin_lock_bh+0x35/0x50 kernel/locking/spinlock.c:178 spin_lock_bh include/linux/spinlock.h:356 [inline] nr_remove_node net/netrom/nr_route.c:299 [inline] nr_del_node+0x4b4/0x820 net/netrom/nr_route.c:355 nr_rt_ioctl+0xa95/0x1090 net/netrom/nr_route.c:683 sock_do_ioctl+0x158/0x460 net/socket.c:1222 sock_ioctl+0x629/0x8e0 net/socket.c:1341 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:904 [inline] __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:890 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #0 (&nr_node->node_lock){+...}-{2:2}: check_prev_add kernel/locking/lockdep.c:3134 [inline] check_prevs_add kernel/locking/lockdep.c:3253 [inline] validate_chain+0x18cb/0x58e0 kernel/locking/lockdep.c:3869 __lock_acquire+0x1346/0x1fd0 kernel/locking/lockdep.c:5137 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5754 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline] _raw_spin_lock_bh+0x35/0x50 kernel/locking/spinlock.c:178 spin_lock_bh include/linux/spinlock.h:356 [inline] nr_node_lock include/net/netrom.h:152 [inline] nr_dec_obs net/netrom/nr_route.c:464 [inline] nr_rt_ioctl+0x1bb/0x1090 net/netrom/nr_route.c:697 sock_do_ioctl+0x158/0x460 net/socket.c:1222 sock_ioctl+0x629/0x8e0 net/socket.c:1341 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:904 [inline] __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:890 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f other info that might help us debug this: Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(nr_node_list_lock); lock(&nr_node->node_lock); lock(nr_node_list_lock); lock(&nr_node->node_lock); *** DEADLOCK *** 1 lock held by syz-executor350/5129: #0: ffffffff8f7053b8 (nr_node_list_lock){+...}-{2:2}, at: spin_lock_bh include/linux/spinlock.h:356 [inline] #0: ffffffff8f7053b8 (nr_node_list_lock){+...}-{2:2}, at: nr_dec_obs net/netrom/nr_route.c:462 [inline] #0: ffffffff8f70 ---truncated---
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < b9d663fbf74290cb68fbc66ae4367bd56837ad1d (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 1fbfb483c1a290dce3f41f52d45cc46dd88b7691 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < b117e5b4f27c2c9076561b6be450a9619f0b79de (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 421c50fa81836775bf0fd6ce0e57a6eb27af24d5 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 3db2fc45d1d2a6457f06ebdfd45b9820e5b5c2b7 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < f28bdc2ee5d9300cc77bd3d97b5b3cdd14960fd8 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 5fb7e2a4335fc67d6952ad2a6613c46e0b05f7c5 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 5bc50a705cfac8f64ce51c95611c3dd0554ef9c3 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < e03e7f20ebf7e1611d40d1fdc1bde900fd3335f6 (git)
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    Linux Linux Affected: 2.6.12
Unaffected: 0 , < 2.6.12 (semver)
Unaffected: 4.19.316 , ≤ 4.19.* (semver)
Unaffected: 5.4.278 , ≤ 5.4.* (semver)
Unaffected: 5.10.219 , ≤ 5.10.* (semver)
Unaffected: 5.15.161 , ≤ 5.15.* (semver)
Unaffected: 6.1.93 , ≤ 6.1.* (semver)
Unaffected: 6.6.33 , ≤ 6.6.* (semver)
Unaffected: 6.8.12 , ≤ 6.8.* (semver)
Unaffected: 6.9.3 , ≤ 6.9.* (semver)
Unaffected: 6.10 , ≤ * (original_commit_for_fix)
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetrom: fix possible dead-lock in nr_rt_ioctl()\n\nsyzbot loves netrom, and found a possible deadlock in nr_rt_ioctl [1]\n\nMake sure we always acquire nr_node_list_lock before nr_node_lock(nr_node)\n\n[1]\nWARNING: possible circular locking dependency detected\n6.9.0-rc7-syzkaller-02147-g654de42f3fc6 #0 Not tainted\n------------------------------------------------------\nsyz-executor350/5129 is trying to acquire lock:\n ffff8880186e2070 (\u0026nr_node-\u003enode_lock){+...}-{2:2}, at: spin_lock_bh include/linux/spinlock.h:356 [inline]\n ffff8880186e2070 (\u0026nr_node-\u003enode_lock){+...}-{2:2}, at: nr_node_lock include/net/netrom.h:152 [inline]\n ffff8880186e2070 (\u0026nr_node-\u003enode_lock){+...}-{2:2}, at: nr_dec_obs net/netrom/nr_route.c:464 [inline]\n ffff8880186e2070 (\u0026nr_node-\u003enode_lock){+...}-{2:2}, at: nr_rt_ioctl+0x1bb/0x1090 net/netrom/nr_route.c:697\n\nbut task is already holding lock:\n ffffffff8f7053b8 (nr_node_list_lock){+...}-{2:2}, at: spin_lock_bh include/linux/spinlock.h:356 [inline]\n ffffffff8f7053b8 (nr_node_list_lock){+...}-{2:2}, at: nr_dec_obs net/netrom/nr_route.c:462 [inline]\n ffffffff8f7053b8 (nr_node_list_lock){+...}-{2:2}, at: nr_rt_ioctl+0x10a/0x1090 net/netrom/nr_route.c:697\n\nwhich lock already depends on the new lock.\n\nthe existing dependency chain (in reverse order) is:\n\n-\u003e #1 (nr_node_list_lock){+...}-{2:2}:\n        lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5754\n        __raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline]\n        _raw_spin_lock_bh+0x35/0x50 kernel/locking/spinlock.c:178\n        spin_lock_bh include/linux/spinlock.h:356 [inline]\n        nr_remove_node net/netrom/nr_route.c:299 [inline]\n        nr_del_node+0x4b4/0x820 net/netrom/nr_route.c:355\n        nr_rt_ioctl+0xa95/0x1090 net/netrom/nr_route.c:683\n        sock_do_ioctl+0x158/0x460 net/socket.c:1222\n        sock_ioctl+0x629/0x8e0 net/socket.c:1341\n        vfs_ioctl fs/ioctl.c:51 [inline]\n        __do_sys_ioctl fs/ioctl.c:904 [inline]\n        __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:890\n        do_syscall_x64 arch/x86/entry/common.c:52 [inline]\n        do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83\n       entry_SYSCALL_64_after_hwframe+0x77/0x7f\n\n-\u003e #0 (\u0026nr_node-\u003enode_lock){+...}-{2:2}:\n        check_prev_add kernel/locking/lockdep.c:3134 [inline]\n        check_prevs_add kernel/locking/lockdep.c:3253 [inline]\n        validate_chain+0x18cb/0x58e0 kernel/locking/lockdep.c:3869\n        __lock_acquire+0x1346/0x1fd0 kernel/locking/lockdep.c:5137\n        lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5754\n        __raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline]\n        _raw_spin_lock_bh+0x35/0x50 kernel/locking/spinlock.c:178\n        spin_lock_bh include/linux/spinlock.h:356 [inline]\n        nr_node_lock include/net/netrom.h:152 [inline]\n        nr_dec_obs net/netrom/nr_route.c:464 [inline]\n        nr_rt_ioctl+0x1bb/0x1090 net/netrom/nr_route.c:697\n        sock_do_ioctl+0x158/0x460 net/socket.c:1222\n        sock_ioctl+0x629/0x8e0 net/socket.c:1341\n        vfs_ioctl fs/ioctl.c:51 [inline]\n        __do_sys_ioctl fs/ioctl.c:904 [inline]\n        __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:890\n        do_syscall_x64 arch/x86/entry/common.c:52 [inline]\n        do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83\n       entry_SYSCALL_64_after_hwframe+0x77/0x7f\n\nother info that might help us debug this:\n\n Possible unsafe locking scenario:\n\n       CPU0                    CPU1\n       ----                    ----\n  lock(nr_node_list_lock);\n                               lock(\u0026nr_node-\u003enode_lock);\n                               lock(nr_node_list_lock);\n  lock(\u0026nr_node-\u003enode_lock);\n\n *** DEADLOCK ***\n\n1 lock held by syz-executor350/5129:\n  #0: ffffffff8f7053b8 (nr_node_list_lock){+...}-{2:2}, at: spin_lock_bh include/linux/spinlock.h:356 [inline]\n  #0: ffffffff8f7053b8 (nr_node_list_lock){+...}-{2:2}, at: nr_dec_obs net/netrom/nr_route.c:462 [inline]\n  #0: ffffffff8f70\n---truncated---"
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          "url": "https://git.kernel.org/stable/c/5bc50a705cfac8f64ce51c95611c3dd0554ef9c3"
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        {
          "url": "https://git.kernel.org/stable/c/e03e7f20ebf7e1611d40d1fdc1bde900fd3335f6"
        }
      ],
      "title": "netrom: fix possible dead-lock in nr_rt_ioctl()",
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-38589",
    "datePublished": "2024-06-19T13:45:41.258Z",
    "dateReserved": "2024-06-18T19:36:34.930Z",
    "dateUpdated": "2025-11-04T17:21:39.426Z",
    "state": "PUBLISHED"
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[inline]\\n ffff8880186e2070 (\u0026nr_node-\u003enode_lock){+...}-{2:2}, at: nr_dec_obs net/netrom/nr_route.c:464 [inline]\\n ffff8880186e2070 (\u0026nr_node-\u003enode_lock){+...}-{2:2}, at: nr_rt_ioctl+0x1bb/0x1090 net/netrom/nr_route.c:697\\n\\nbut task is already holding lock:\\n ffffffff8f7053b8 (nr_node_list_lock){+...}-{2:2}, at: spin_lock_bh include/linux/spinlock.h:356 [inline]\\n ffffffff8f7053b8 (nr_node_list_lock){+...}-{2:2}, at: nr_dec_obs net/netrom/nr_route.c:462 [inline]\\n ffffffff8f7053b8 (nr_node_list_lock){+...}-{2:2}, at: nr_rt_ioctl+0x10a/0x1090 net/netrom/nr_route.c:697\\n\\nwhich lock already depends on the new lock.\\n\\nthe existing dependency chain (in reverse order) is:\\n\\n-\u003e #1 (nr_node_list_lock){+...}-{2:2}:\\n        lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5754\\n        __raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline]\\n        _raw_spin_lock_bh+0x35/0x50 kernel/locking/spinlock.c:178\\n        spin_lock_bh include/linux/spinlock.h:356 [inline]\\n        nr_remove_node net/netrom/nr_route.c:299 [inline]\\n        nr_del_node+0x4b4/0x820 net/netrom/nr_route.c:355\\n        nr_rt_ioctl+0xa95/0x1090 net/netrom/nr_route.c:683\\n        sock_do_ioctl+0x158/0x460 net/socket.c:1222\\n        sock_ioctl+0x629/0x8e0 net/socket.c:1341\\n        vfs_ioctl fs/ioctl.c:51 [inline]\\n        __do_sys_ioctl fs/ioctl.c:904 [inline]\\n        __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:890\\n        do_syscall_x64 arch/x86/entry/common.c:52 [inline]\\n        do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83\\n       entry_SYSCALL_64_after_hwframe+0x77/0x7f\\n\\n-\u003e #0 (\u0026nr_node-\u003enode_lock){+...}-{2:2}:\\n        check_prev_add kernel/locking/lockdep.c:3134 [inline]\\n        check_prevs_add kernel/locking/lockdep.c:3253 [inline]\\n        validate_chain+0x18cb/0x58e0 kernel/locking/lockdep.c:3869\\n        __lock_acquire+0x1346/0x1fd0 kernel/locking/lockdep.c:5137\\n        lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5754\\n        __raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline]\\n        _raw_spin_lock_bh+0x35/0x50 kernel/locking/spinlock.c:178\\n        spin_lock_bh include/linux/spinlock.h:356 [inline]\\n        nr_node_lock include/net/netrom.h:152 [inline]\\n        nr_dec_obs net/netrom/nr_route.c:464 [inline]\\n        nr_rt_ioctl+0x1bb/0x1090 net/netrom/nr_route.c:697\\n        sock_do_ioctl+0x158/0x460 net/socket.c:1222\\n        sock_ioctl+0x629/0x8e0 net/socket.c:1341\\n        vfs_ioctl fs/ioctl.c:51 [inline]\\n        __do_sys_ioctl fs/ioctl.c:904 [inline]\\n        __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:890\\n        do_syscall_x64 arch/x86/entry/common.c:52 [inline]\\n        do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83\\n       entry_SYSCALL_64_after_hwframe+0x77/0x7f\\n\\nother info that might help us debug this:\\n\\n Possible unsafe locking scenario:\\n\\n       CPU0                    CPU1\\n       ----                    ----\\n  lock(nr_node_list_lock);\\n                               lock(\u0026nr_node-\u003enode_lock);\\n                               lock(nr_node_list_lock);\\n  lock(\u0026nr_node-\u003enode_lock);\\n\\n *** DEADLOCK ***\\n\\n1 lock held by syz-executor350/5129:\\n  #0: ffffffff8f7053b8 (nr_node_list_lock){+...}-{2:2}, at: spin_lock_bh include/linux/spinlock.h:356 [inline]\\n  #0: ffffffff8f7053b8 (nr_node_list_lock){+...}-{2:2}, at: nr_dec_obs net/netrom/nr_route.c:462 [inline]\\n  #0: ffffffff8f70\\n---truncated---\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.19.316\", \"versionStartIncluding\": \"2.6.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.278\", \"versionStartIncluding\": \"2.6.12\"}, {\"criteria\": 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\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.10\", \"versionStartIncluding\": \"2.6.12\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-05-04T09:14:45.628Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-38589\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-11-04T17:21:39.426Z\", \"dateReserved\": \"2024-06-18T19:36:34.930Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-06-19T13:45:41.258Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


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  • 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.