CVE-2025-38400 (GCVE-0-2025-38400)
Vulnerability from cvelistv5
Published
2025-07-25 12:53
Modified
2025-07-28 04:21
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
nfs: Clean up /proc/net/rpc/nfs when nfs_fs_proc_net_init() fails.
syzbot reported a warning below [1] following a fault injection in
nfs_fs_proc_net_init(). [0]
When nfs_fs_proc_net_init() fails, /proc/net/rpc/nfs is not removed.
Later, rpc_proc_exit() tries to remove /proc/net/rpc, and the warning
is logged as the directory is not empty.
Let's handle the error of nfs_fs_proc_net_init() properly.
[0]:
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 1 UID: 0 PID: 6120 Comm: syz.2.27 Not tainted 6.16.0-rc1-syzkaller-00010-g2c4a1f3fe03e #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Call Trace:
<TASK>
dump_stack_lvl (lib/dump_stack.c:123)
should_fail_ex (lib/fault-inject.c:73 lib/fault-inject.c:174)
should_failslab (mm/failslab.c:46)
kmem_cache_alloc_noprof (mm/slub.c:4178 mm/slub.c:4204)
__proc_create (fs/proc/generic.c:427)
proc_create_reg (fs/proc/generic.c:554)
proc_create_net_data (fs/proc/proc_net.c:120)
nfs_fs_proc_net_init (fs/nfs/client.c:1409)
nfs_net_init (fs/nfs/inode.c:2600)
ops_init (net/core/net_namespace.c:138)
setup_net (net/core/net_namespace.c:443)
copy_net_ns (net/core/net_namespace.c:576)
create_new_namespaces (kernel/nsproxy.c:110)
unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4))
ksys_unshare (kernel/fork.c:3123)
__x64_sys_unshare (kernel/fork.c:3190)
do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
</TASK>
[1]:
remove_proc_entry: removing non-empty directory 'net/rpc', leaking at least 'nfs'
WARNING: CPU: 1 PID: 6120 at fs/proc/generic.c:727 remove_proc_entry+0x45e/0x530 fs/proc/generic.c:727
Modules linked in:
CPU: 1 UID: 0 PID: 6120 Comm: syz.2.27 Not tainted 6.16.0-rc1-syzkaller-00010-g2c4a1f3fe03e #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:remove_proc_entry+0x45e/0x530 fs/proc/generic.c:727
Code: 3c 02 00 0f 85 85 00 00 00 48 8b 93 d8 00 00 00 4d 89 f0 4c 89 e9 48 c7 c6 40 ba a2 8b 48 c7 c7 60 b9 a2 8b e8 33 81 1d ff 90 <0f> 0b 90 90 e9 5f fe ff ff e8 04 69 5e ff 90 48 b8 00 00 00 00 00
RSP: 0018:ffffc90003637b08 EFLAGS: 00010282
RAX: 0000000000000000 RBX: ffff88805f534140 RCX: ffffffff817a92c8
RDX: ffff88807da99e00 RSI: ffffffff817a92d5 RDI: 0000000000000001
RBP: ffff888033431ac0 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: ffff888033431a00
R13: ffff888033431ae4 R14: ffff888033184724 R15: dffffc0000000000
FS: 0000555580328500(0000) GS:ffff888124a62000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f71733743e0 CR3: 000000007f618000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
sunrpc_exit_net+0x46/0x90 net/sunrpc/sunrpc_syms.c:76
ops_exit_list net/core/net_namespace.c:200 [inline]
ops_undo_list+0x2eb/0xab0 net/core/net_namespace.c:253
setup_net+0x2e1/0x510 net/core/net_namespace.c:457
copy_net_ns+0x2a6/0x5f0 net/core/net_namespace.c:574
create_new_namespaces+0x3ea/0xa90 kernel/nsproxy.c:110
unshare_nsproxy_namespaces+0xc0/0x1f0 kernel/nsproxy.c:218
ksys_unshare+0x45b/0xa40 kernel/fork.c:3121
__do_sys_unshare kernel/fork.c:3192 [inline]
__se_sys_unshare kernel/fork.c:3190 [inline]
__x64_sys_unshare+0x31/0x40 kernel/fork.c:3190
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xcd/0x490 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa1a6b8e929
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c
---truncated---
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| ► | Linux | Linux |
Version: 31dd0cda5aa0547de447aaf184812f85ccc34044 Version: 6eef21eb7a165601882dad0419a630e32d2d7a2c Version: 0bbd429260821dfb81478749837d3e6377949ac6 Version: 9dd86e9d34b1078dcd647220e96a205028bf4e6f Version: 53a0365c9f9f66e1a981bf9188d8716d682e0739 Version: d47151b79e3220e72ae323b8b8e9d6da20dc884e Version: d47151b79e3220e72ae323b8b8e9d6da20dc884e Version: d47151b79e3220e72ae323b8b8e9d6da20dc884e Version: e05194baae299f2148ab5f6bab659c6ce8d1f6d3 |
|
{
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},
{
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}
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}
],
"cpeApplicability": [
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}
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],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnfs: Clean up /proc/net/rpc/nfs when nfs_fs_proc_net_init() fails.\n\nsyzbot reported a warning below [1] following a fault injection in\nnfs_fs_proc_net_init(). [0]\n\nWhen nfs_fs_proc_net_init() fails, /proc/net/rpc/nfs is not removed.\n\nLater, rpc_proc_exit() tries to remove /proc/net/rpc, and the warning\nis logged as the directory is not empty.\n\nLet\u0027s handle the error of nfs_fs_proc_net_init() properly.\n\n[0]:\nFAULT_INJECTION: forcing a failure.\nname failslab, interval 1, probability 0, space 0, times 0\nCPU: 1 UID: 0 PID: 6120 Comm: syz.2.27 Not tainted 6.16.0-rc1-syzkaller-00010-g2c4a1f3fe03e #0 PREEMPT(full)\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025\nCall Trace:\n \u003cTASK\u003e\n dump_stack_lvl (lib/dump_stack.c:123)\n should_fail_ex (lib/fault-inject.c:73 lib/fault-inject.c:174)\n should_failslab (mm/failslab.c:46)\n kmem_cache_alloc_noprof (mm/slub.c:4178 mm/slub.c:4204)\n __proc_create (fs/proc/generic.c:427)\n proc_create_reg (fs/proc/generic.c:554)\n proc_create_net_data (fs/proc/proc_net.c:120)\n nfs_fs_proc_net_init (fs/nfs/client.c:1409)\n nfs_net_init (fs/nfs/inode.c:2600)\n ops_init (net/core/net_namespace.c:138)\n setup_net (net/core/net_namespace.c:443)\n copy_net_ns (net/core/net_namespace.c:576)\n create_new_namespaces (kernel/nsproxy.c:110)\n unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4))\n ksys_unshare (kernel/fork.c:3123)\n __x64_sys_unshare (kernel/fork.c:3190)\n do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)\n entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)\n \u003c/TASK\u003e\n\n[1]:\nremove_proc_entry: removing non-empty directory \u0027net/rpc\u0027, leaking at least \u0027nfs\u0027\n WARNING: CPU: 1 PID: 6120 at fs/proc/generic.c:727 remove_proc_entry+0x45e/0x530 fs/proc/generic.c:727\nModules linked in:\nCPU: 1 UID: 0 PID: 6120 Comm: syz.2.27 Not tainted 6.16.0-rc1-syzkaller-00010-g2c4a1f3fe03e #0 PREEMPT(full)\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025\n RIP: 0010:remove_proc_entry+0x45e/0x530 fs/proc/generic.c:727\nCode: 3c 02 00 0f 85 85 00 00 00 48 8b 93 d8 00 00 00 4d 89 f0 4c 89 e9 48 c7 c6 40 ba a2 8b 48 c7 c7 60 b9 a2 8b e8 33 81 1d ff 90 \u003c0f\u003e 0b 90 90 e9 5f fe ff ff e8 04 69 5e ff 90 48 b8 00 00 00 00 00\nRSP: 0018:ffffc90003637b08 EFLAGS: 00010282\nRAX: 0000000000000000 RBX: ffff88805f534140 RCX: ffffffff817a92c8\nRDX: ffff88807da99e00 RSI: ffffffff817a92d5 RDI: 0000000000000001\nRBP: ffff888033431ac0 R08: 0000000000000001 R09: 0000000000000000\nR10: 0000000000000001 R11: 0000000000000001 R12: ffff888033431a00\nR13: ffff888033431ae4 R14: ffff888033184724 R15: dffffc0000000000\nFS: 0000555580328500(0000) GS:ffff888124a62000(0000) knlGS:0000000000000000\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 00007f71733743e0 CR3: 000000007f618000 CR4: 00000000003526f0\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\nCall Trace:\n \u003cTASK\u003e\n sunrpc_exit_net+0x46/0x90 net/sunrpc/sunrpc_syms.c:76\n ops_exit_list net/core/net_namespace.c:200 [inline]\n ops_undo_list+0x2eb/0xab0 net/core/net_namespace.c:253\n setup_net+0x2e1/0x510 net/core/net_namespace.c:457\n copy_net_ns+0x2a6/0x5f0 net/core/net_namespace.c:574\n create_new_namespaces+0x3ea/0xa90 kernel/nsproxy.c:110\n unshare_nsproxy_namespaces+0xc0/0x1f0 kernel/nsproxy.c:218\n ksys_unshare+0x45b/0xa40 kernel/fork.c:3121\n __do_sys_unshare kernel/fork.c:3192 [inline]\n __se_sys_unshare kernel/fork.c:3190 [inline]\n __x64_sys_unshare+0x31/0x40 kernel/fork.c:3190\n do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]\n do_syscall_64+0xcd/0x490 arch/x86/entry/syscall_64.c:94\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\nRIP: 0033:0x7fa1a6b8e929\nCode: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 \u003c48\u003e 3d 01 f0 ff ff 73 01 c\n---truncated---"
}
],
"providerMetadata": {
"dateUpdated": "2025-07-28T04:21:07.842Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/8785701fd7cd52ae74c0d2b35b82568df74e9dbb"
},
{
"url": "https://git.kernel.org/stable/c/412534a1fb76958b88dca48360c6f3ad4f3390f4"
},
{
"url": "https://git.kernel.org/stable/c/b92397ce96743e4cc090207e2df2a856cb4cef08"
},
{
"url": "https://git.kernel.org/stable/c/7701c245ff1ac1a126bf431e72b24547519046ff"
},
{
"url": "https://git.kernel.org/stable/c/d0877c479f44fe475f4c8c02c88ce9ad43e90298"
},
{
"url": "https://git.kernel.org/stable/c/3c94212b57bedec3a386ef3da1ef00602f5c3d1d"
},
{
"url": "https://git.kernel.org/stable/c/6acf340f8c1d296bcf535986175f5d0d6f2aab09"
},
{
"url": "https://git.kernel.org/stable/c/e8d6f3ab59468e230f3253efe5cb63efa35289f7"
}
],
"title": "nfs: Clean up /proc/net/rpc/nfs when nfs_fs_proc_net_init() fails.",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2025-38400",
"datePublished": "2025-07-25T12:53:44.038Z",
"dateReserved": "2025-04-16T04:51:24.012Z",
"dateUpdated": "2025-07-28T04:21:07.842Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1",
"vulnerability-lookup:meta": {
"nvd": "{\"cve\":{\"id\":\"CVE-2025-38400\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-07-25T13:15:29.533\",\"lastModified\":\"2025-07-25T15:29:19.837\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnfs: Clean up /proc/net/rpc/nfs when nfs_fs_proc_net_init() fails.\\n\\nsyzbot reported a warning below [1] following a fault injection in\\nnfs_fs_proc_net_init(). [0]\\n\\nWhen nfs_fs_proc_net_init() fails, /proc/net/rpc/nfs is not removed.\\n\\nLater, rpc_proc_exit() tries to remove /proc/net/rpc, and the warning\\nis logged as the directory is not empty.\\n\\nLet\u0027s handle the error of nfs_fs_proc_net_init() properly.\\n\\n[0]:\\nFAULT_INJECTION: forcing a failure.\\nname failslab, interval 1, probability 0, space 0, times 0\\nCPU: 1 UID: 0 PID: 6120 Comm: syz.2.27 Not tainted 6.16.0-rc1-syzkaller-00010-g2c4a1f3fe03e #0 PREEMPT(full)\\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025\\nCall Trace:\\n \u003cTASK\u003e\\n dump_stack_lvl (lib/dump_stack.c:123)\\n should_fail_ex (lib/fault-inject.c:73 lib/fault-inject.c:174)\\n should_failslab (mm/failslab.c:46)\\n kmem_cache_alloc_noprof (mm/slub.c:4178 mm/slub.c:4204)\\n __proc_create (fs/proc/generic.c:427)\\n proc_create_reg (fs/proc/generic.c:554)\\n proc_create_net_data (fs/proc/proc_net.c:120)\\n nfs_fs_proc_net_init (fs/nfs/client.c:1409)\\n nfs_net_init (fs/nfs/inode.c:2600)\\n ops_init (net/core/net_namespace.c:138)\\n setup_net (net/core/net_namespace.c:443)\\n copy_net_ns (net/core/net_namespace.c:576)\\n create_new_namespaces (kernel/nsproxy.c:110)\\n unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4))\\n ksys_unshare (kernel/fork.c:3123)\\n __x64_sys_unshare (kernel/fork.c:3190)\\n do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)\\n entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)\\n \u003c/TASK\u003e\\n\\n[1]:\\nremove_proc_entry: removing non-empty directory \u0027net/rpc\u0027, leaking at least \u0027nfs\u0027\\n WARNING: CPU: 1 PID: 6120 at fs/proc/generic.c:727 remove_proc_entry+0x45e/0x530 fs/proc/generic.c:727\\nModules linked in:\\nCPU: 1 UID: 0 PID: 6120 Comm: syz.2.27 Not tainted 6.16.0-rc1-syzkaller-00010-g2c4a1f3fe03e #0 PREEMPT(full)\\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025\\n RIP: 0010:remove_proc_entry+0x45e/0x530 fs/proc/generic.c:727\\nCode: 3c 02 00 0f 85 85 00 00 00 48 8b 93 d8 00 00 00 4d 89 f0 4c 89 e9 48 c7 c6 40 ba a2 8b 48 c7 c7 60 b9 a2 8b e8 33 81 1d ff 90 \u003c0f\u003e 0b 90 90 e9 5f fe ff ff e8 04 69 5e ff 90 48 b8 00 00 00 00 00\\nRSP: 0018:ffffc90003637b08 EFLAGS: 00010282\\nRAX: 0000000000000000 RBX: ffff88805f534140 RCX: ffffffff817a92c8\\nRDX: ffff88807da99e00 RSI: ffffffff817a92d5 RDI: 0000000000000001\\nRBP: ffff888033431ac0 R08: 0000000000000001 R09: 0000000000000000\\nR10: 0000000000000001 R11: 0000000000000001 R12: ffff888033431a00\\nR13: ffff888033431ae4 R14: ffff888033184724 R15: dffffc0000000000\\nFS: 0000555580328500(0000) GS:ffff888124a62000(0000) knlGS:0000000000000000\\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\\nCR2: 00007f71733743e0 CR3: 000000007f618000 CR4: 00000000003526f0\\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\\nCall Trace:\\n \u003cTASK\u003e\\n sunrpc_exit_net+0x46/0x90 net/sunrpc/sunrpc_syms.c:76\\n ops_exit_list net/core/net_namespace.c:200 [inline]\\n ops_undo_list+0x2eb/0xab0 net/core/net_namespace.c:253\\n setup_net+0x2e1/0x510 net/core/net_namespace.c:457\\n copy_net_ns+0x2a6/0x5f0 net/core/net_namespace.c:574\\n create_new_namespaces+0x3ea/0xa90 kernel/nsproxy.c:110\\n unshare_nsproxy_namespaces+0xc0/0x1f0 kernel/nsproxy.c:218\\n ksys_unshare+0x45b/0xa40 kernel/fork.c:3121\\n __do_sys_unshare kernel/fork.c:3192 [inline]\\n __se_sys_unshare kernel/fork.c:3190 [inline]\\n __x64_sys_unshare+0x31/0x40 kernel/fork.c:3190\\n do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]\\n do_syscall_64+0xcd/0x490 arch/x86/entry/syscall_64.c:94\\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\\nRIP: 0033:0x7fa1a6b8e929\\nCode: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 \u003c48\u003e 3d 01 f0 ff ff 73 01 c\\n---truncated---\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/3c94212b57bedec3a386ef3da1ef00602f5c3d1d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/412534a1fb76958b88dca48360c6f3ad4f3390f4\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/6acf340f8c1d296bcf535986175f5d0d6f2aab09\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/7701c245ff1ac1a126bf431e72b24547519046ff\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/8785701fd7cd52ae74c0d2b35b82568df74e9dbb\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/b92397ce96743e4cc090207e2df2a856cb4cef08\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/d0877c479f44fe475f4c8c02c88ce9ad43e90298\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/e8d6f3ab59468e230f3253efe5cb63efa35289f7\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
}
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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