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vuln-cve/data/2025/39xxx/CVE-2025-39995.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2025-39995",
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"state": "PUBLISHED",
"assignerShortName": "Linux",
"dateReserved": "2025-04-16T07:20:57.151Z",
"datePublished": "2025-10-15T07:58:20.365Z",
"dateUpdated": "2026-05-11T21:40:26.312Z"
},
"containers": {
"cna": {
"providerMetadata": {
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux",
"dateUpdated": "2026-05-11T21:40:26.312Z"
},
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: i2c: tc358743: Fix use-after-free bugs caused by orphan timer in probe\n\nThe state->timer is a cyclic timer that schedules work_i2c_poll and\ndelayed_work_enable_hotplug, while rearming itself. Using timer_delete()\nfails to guarantee the timer isn't still running when destroyed, similarly\ncancel_delayed_work() cannot ensure delayed_work_enable_hotplug has\nterminated if already executing. During probe failure after timer\ninitialization, these may continue running as orphans and reference the\nalready-freed tc358743_state object through tc358743_irq_poll_timer.\n\nThe following is the trace captured by KASAN.\n\nBUG: KASAN: slab-use-after-free in __run_timer_base.part.0+0x7d7/0x8c0\nWrite of size 8 at addr ffff88800ded83c8 by task swapper/1/0\n...\nCall Trace:\n <IRQ>\n dump_stack_lvl+0x55/0x70\n print_report+0xcf/0x610\n ? __pfx_sched_balance_find_src_group+0x10/0x10\n ? __run_timer_base.part.0+0x7d7/0x8c0\n kasan_report+0xb8/0xf0\n ? __run_timer_base.part.0+0x7d7/0x8c0\n __run_timer_base.part.0+0x7d7/0x8c0\n ? rcu_sched_clock_irq+0xb06/0x27d0\n ? __pfx___run_timer_base.part.0+0x10/0x10\n ? try_to_wake_up+0xb15/0x1960\n ? tmigr_update_events+0x280/0x740\n ? _raw_spin_lock_irq+0x80/0xe0\n ? __pfx__raw_spin_lock_irq+0x10/0x10\n tmigr_handle_remote_up+0x603/0x7e0\n ? __pfx_tmigr_handle_remote_up+0x10/0x10\n ? sched_balance_trigger+0x98/0x9f0\n ? sched_tick+0x221/0x5a0\n ? _raw_spin_lock_irq+0x80/0xe0\n ? __pfx__raw_spin_lock_irq+0x10/0x10\n ? tick_nohz_handler+0x339/0x440\n ? __pfx_tmigr_handle_remote_up+0x10/0x10\n __walk_groups.isra.0+0x42/0x150\n tmigr_handle_remote+0x1f4/0x2e0\n ? __pfx_tmigr_handle_remote+0x10/0x10\n ? ktime_get+0x60/0x140\n ? lapic_next_event+0x11/0x20\n ? clockevents_program_event+0x1d4/0x2a0\n ? hrtimer_interrupt+0x322/0x780\n handle_softirqs+0x16a/0x550\n irq_exit_rcu+0xaf/0xe0\n sysvec_apic_timer_interrupt+0x70/0x80\n </IRQ>\n...\n\nAllocated by task 141:\n kasan_save_stack+0x24/0x50\n kasan_save_track+0x14/0x30\n __kasan_kmalloc+0x7f/0x90\n __kmalloc_node_track_caller_noprof+0x198/0x430\n devm_kmalloc+0x7b/0x1e0\n tc358743_probe+0xb7/0x610 i2c_device_probe+0x51d/0x880\n really_probe+0x1ca/0x5c0\n __driver_probe_device+0x248/0x310\n driver_probe_device+0x44/0x120\n __device_attach_driver+0x174/0x220\n bus_for_each_drv+0x100/0x190\n __device_attach+0x206/0x370\n bus_probe_device+0x123/0x170\n device_add+0xd25/0x1470\n i2c_new_client_device+0x7a0/0xcd0\n do_one_initcall+0x89/0x300\n do_init_module+0x29d/0x7f0\n load_module+0x4f48/0x69e0\n init_module_from_file+0xe4/0x150\n idempotent_init_module+0x320/0x670\n __x64_sys_finit_module+0xbd/0x120\n do_syscall_64+0xac/0x280\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\n\nFreed by task 141:\n kasan_save_stack+0x24/0x50\n kasan_save_track+0x14/0x30\n kasan_save_free_info+0x3a/0x60\n __kasan_slab_free+0x3f/0x50\n kfree+0x137/0x370\n release_nodes+0xa4/0x100\n devres_release_group+0x1b2/0x380\n i2c_device_probe+0x694/0x880\n really_probe+0x1ca/0x5c0\n __driver_probe_device+0x248/0x310\n driver_probe_device+0x44/0x120\n __device_attach_driver+0x174/0x220\n bus_for_each_drv+0x100/0x190\n __device_attach+0x206/0x370\n bus_probe_device+0x123/0x170\n device_add+0xd25/0x1470\n i2c_new_client_device+0x7a0/0xcd0\n do_one_initcall+0x89/0x300\n do_init_module+0x29d/0x7f0\n load_module+0x4f48/0x69e0\n init_module_from_file+0xe4/0x150\n idempotent_init_module+0x320/0x670\n __x64_sys_finit_module+0xbd/0x120\n do_syscall_64+0xac/0x280\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\n...\n\nReplace timer_delete() with timer_delete_sync() and cancel_delayed_work()\nwith cancel_delayed_work_sync() to ensure proper termination of timer and\nwork items before resource cleanup.\n\nThis bug was initially identified through static analysis. For reproduction\nand testing, I created a functional emulation of the tc358743 device via a\nkernel module and introduced faults through the debugfs interface."
}
],
"affected": [
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "unaffected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"drivers/media/i2c/tc358743.c"
],
"versions": [
{
"version": "d32d98642de66048f9534a05f3641558e811bbc9",
"lessThan": "9205fb6e617a1c596d9a9ad2a160ee696e09d520",
"status": "affected",
"versionType": "git"
},
{
"version": "d32d98642de66048f9534a05f3641558e811bbc9",
"lessThan": "70913586c717dd25cfbade7a418e92cc9c99398a",
"status": "affected",
"versionType": "git"
},
{
"version": "d32d98642de66048f9534a05f3641558e811bbc9",
"lessThan": "663faf1179db9663a3793c75e9bc869358bad910",
"status": "affected",
"versionType": "git"
},
{
"version": "d32d98642de66048f9534a05f3641558e811bbc9",
"lessThan": "3d17701c156579969470e58b3a906511f8bc018d",
"status": "affected",
"versionType": "git"
},
{
"version": "d32d98642de66048f9534a05f3641558e811bbc9",
"lessThan": "228d06c4cbfc750f1216a3fd91b4693b0766d2f6",
"status": "affected",
"versionType": "git"
},
{
"version": "d32d98642de66048f9534a05f3641558e811bbc9",
"lessThan": "f92181c0e13cad9671d07b15be695a97fc2534a3",
"status": "affected",
"versionType": "git"
},
{
"version": "d32d98642de66048f9534a05f3641558e811bbc9",
"lessThan": "f3f3f00bcabbd2ce0a77a2ac7a6797b8646bfd8b",
"status": "affected",
"versionType": "git"
},
{
"version": "d32d98642de66048f9534a05f3641558e811bbc9",
"lessThan": "2610617effb4454d2f1c434c011ccb5cc7140711",
"status": "affected",
"versionType": "git"
},
{
"version": "d32d98642de66048f9534a05f3641558e811bbc9",
"lessThan": "79d10f4f21a92e459b2276a77be62c59c1502c9d",
"status": "affected",
"versionType": "git"
}
]
},
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "affected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"drivers/media/i2c/tc358743.c"
],
"versions": [
{
"version": "4.3",
"status": "affected"
},
{
"version": "0",
"lessThan": "4.3",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "5.4.301",
"lessThanOrEqual": "5.4.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "5.10.246",
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "5.15.195",
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.1.156",
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.6.111",
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.12.52",
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.16.11",
"lessThanOrEqual": "6.16.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.17.1",
"lessThanOrEqual": "6.17.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.18",
"lessThanOrEqual": "*",
"status": "unaffected",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"operator": "OR",
"negate": false,
"cpeMatch": [
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "4.3",
"versionEndExcluding": "5.4.301"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "4.3",
"versionEndExcluding": "5.10.246"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "4.3",
"versionEndExcluding": "5.15.195"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "4.3",
"versionEndExcluding": "6.1.156"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "4.3",
"versionEndExcluding": "6.6.111"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "4.3",
"versionEndExcluding": "6.12.52"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "4.3",
"versionEndExcluding": "6.16.11"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "4.3",
"versionEndExcluding": "6.17.1"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "4.3",
"versionEndExcluding": "6.18"
}
]
}
]
}
],
"references": [
{
"url": "https://git.kernel.org/stable/c/9205fb6e617a1c596d9a9ad2a160ee696e09d520"
},
{
"url": "https://git.kernel.org/stable/c/70913586c717dd25cfbade7a418e92cc9c99398a"
},
{
"url": "https://git.kernel.org/stable/c/663faf1179db9663a3793c75e9bc869358bad910"
},
{
"url": "https://git.kernel.org/stable/c/3d17701c156579969470e58b3a906511f8bc018d"
},
{
"url": "https://git.kernel.org/stable/c/228d06c4cbfc750f1216a3fd91b4693b0766d2f6"
},
{
"url": "https://git.kernel.org/stable/c/f92181c0e13cad9671d07b15be695a97fc2534a3"
},
{
"url": "https://git.kernel.org/stable/c/f3f3f00bcabbd2ce0a77a2ac7a6797b8646bfd8b"
},
{
"url": "https://git.kernel.org/stable/c/2610617effb4454d2f1c434c011ccb5cc7140711"
},
{
"url": "https://git.kernel.org/stable/c/79d10f4f21a92e459b2276a77be62c59c1502c9d"
}
],
"title": "media: i2c: tc358743: Fix use-after-free bugs caused by orphan timer in probe",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
}
}
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