{"cve":"CVE-2025-22053","nvd":{"published":"2025-04-16T15:15:58.770","modified":"2026-10-30T13:17:56.087","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ibmveth: make veth_pool_store stop hanging\n\nv2:\n- Created a single error handling unlock and exit in veth_pool_store\n- Greatly expanded commit message with previous explanatory-only text\n\nSummary: Use rtnl_mutex to synchronize veth_pool_store with itself,\nibmveth_close and ibmveth_open, preventing multiple calls in a row to\nnapi_disable.\n\nBackground: Two (or more) threads could call veth_pool_store through\nwriting to /sys/devices/vio/30000002/pool*/*. You can do this easily\nwith a little shell script. This causes a hang.\n\nI configured LOCKDEP, compiled ibmveth.c with DEBUG, and built a new\nkernel. I ran this test again and saw:\n\n    Setting pool0/active to 0\n    Setting pool1/active to 1\n    [   73.911067][ T4365] ibmveth 30000002 eth0: close starting\n    Setting pool1/active to 1\n    Setting pool1/active to 0\n    [   73.911367][ T4366] ibmveth 30000002 eth0: close starting\n    [   73.916056][ T4365] ibmveth 30000002 eth0: close complete\n    [   73.916064][ T4365] ibmveth 30000002 eth0: open starting\n    [  110.808564][  T712] systemd-journald[712]: Sent WATCHDOG=1 notification.\n    [  230.808495][  T712] systemd-journald[712]: Sent WATCHDOG=1 notification.\n    [  243.683786][  T123] INFO: task stress.sh:4365 blocked for more than 122 seconds.\n    [  243.683827][  T123]       Not tainted 6.14.0-01103-g2df0c02dab82-dirty #8\n    [  243.683833][  T123] \"echo 0 > /proc/sys/kernel/hung_task_timeout_secs\" disables this message.\n    [  243.683838][  T123] task:stress.sh       state:D stack:28096 pid:4365  tgid:4365  ppid:4364   task_flags:0x400040 flags:0x00042000\n    [  243.683852][  T123] Call Trace:\n    [  243.683857][  T123] [c00000000c38f690] [0000000000000001] 0x1 (unreliable)\n    [  243.683868][  T123] [c00000000c38f840] [c00000000001f908] __switch_to+0x318/0x4e0\n    [  243.683878][  T123] [c00000000c38f8a0] [c000000001549a70] __schedule+0x500/0x12a0\n    [  243.683888][  T123] [c00000000c38f9a0] [c00000000154a878] schedule+0x68/0x210\n    [  243.683896][  T123] [c00000000c38f9d0] [c00000000154ac80] schedule_preempt_disabled+0x30/0x50\n    [  243.683904][  T123] [c00000000c38fa00] [c00000000154dbb0] __mutex_lock+0x730/0x10f0\n    [  243.683913][  T123] [c00000000c38fb10] [c000000001154d40] napi_enable+0x30/0x60\n    [  243.683921][  T123] [c00000000c38fb40] [c000000000f4ae94] ibmveth_open+0x68/0x5dc\n    [  243.683928][  T123] [c00000000c38fbe0] [c000000000f4aa20] veth_pool_store+0x220/0x270\n    [  243.683936][  T123] [c00000000c38fc70] [c000000000826278] sysfs_kf_write+0x68/0xb0\n    [  243.683944][  T123] [c00000000c38fcb0] [c0000000008240b8] kernfs_fop_write_iter+0x198/0x2d0\n    [  243.683951][  T123] [c00000000c38fd00] [c00000000071b9ac] vfs_write+0x34c/0x650\n    [  243.683958][  T123] [c00000000c38fdc0] [c00000000071bea8] ksys_write+0x88/0x150\n    [  243.683966][  T123] [c00000000c38fe10] [c0000000000317f4] system_call_exception+0x124/0x340\n    [  243.683973][  T123] [c00000000c38fe50] [c00000000000d05c] system_call_vectored_common+0x15c/0x2ec\n    ...\n    [  243.684087][  T123] Showing all locks held in the system:\n    [  243.684095][  T123] 1 lock held by khungtaskd/123:\n    [  243.684099][  T123]  #0: c00000000278e370 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x50/0x248\n    [  243.684114][  T123] 4 locks held by stress.sh/4365:\n    [  243.684119][  T123]  #0: c00000003a4cd3f8 (sb_writers#3){.+.+}-{0:0}, at: ksys_write+0x88/0x150\n    [  243.684132][  T123]  #1: c000000041aea888 (&of->mutex#2){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x154/0x2d0\n    [  243.684143][  T123]  #2: c0000000366fb9a8 (kn->active#64){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x160/0x2d0\n    [  243.684155][  T123]  #3: c000000035ff4cb8 (&dev->lock){+.+.}-{3:3}, at: napi_enable+0x30/0x60\n    [  243.684166][  T123] 5 locks held by stress.sh/4366:\n    [  243.684170][  T123]  #0: c00000003a4cd3f8 (sb_writers#3){.+.+}-{0:0}, at: ksys_write+0x88/0x150\n    [  243.\n---truncated---","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":5.5},"cwes":["CWE-667"],"references":["https://git.kernel.org/stable/c/053f3ff67d7feefc75797863f3d84b47ad47086f","https://git.kernel.org/stable/c/0a2470e3ecde64fc7e3781dc474923193621ae67","https://git.kernel.org/stable/c/1e458c292f4c687dcf5aad32dd4836d03cd2191f","https://git.kernel.org/stable/c/86cc70f5c85dc09bf7f3e1eee380eefe73c90765","https://git.kernel.org/stable/c/8a88bb092f4208355880b9fdcc69d491aa297595"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-30T13:47:47.119061695+00:00"},"epss":{"cve":"CVE-2025-22053","score":0.00154,"percentile":0.0449,"date":"2026-10-30"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}