| { |
| "containers": { |
| "cna": { |
| "providerMetadata": { |
| "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038" |
| }, |
| "descriptions": [ |
| { |
| "lang": "en", |
| "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ngpio: aggregator: protect driver attr handlers against module unload\n\nBoth new_device_store and delete_device_store touch module global\nresources (e.g. gpio_aggregator_lock). To prevent race conditions with\nmodule unload, a reference needs to be held.\n\nAdd try_module_get() in these handlers.\n\nFor new_device_store, this eliminates what appears to be the most dangerous\nscenario: if an id is allocated from gpio_aggregator_idr but\nplatform_device_register has not yet been called or completed, a concurrent\nmodule unload could fail to unregister/delete the device, leaving behind a\ndangling platform device/GPIO forwarder. This can result in various issues.\nThe following simple reproducer demonstrates these problems:\n\n #!/bin/bash\n while :; do\n # note: whether 'gpiochip0 0' exists or not does not matter.\n echo 'gpiochip0 0' > /sys/bus/platform/drivers/gpio-aggregator/new_device\n done &\n while :; do\n modprobe gpio-aggregator\n modprobe -r gpio-aggregator\n done &\n wait\n\n Starting with the following warning, several kinds of warnings will appear\n and the system may become unstable:\n\n ------------[ cut here ]------------\n list_del corruption, ffff888103e2e980->next is LIST_POISON1 (dead000000000100)\n WARNING: CPU: 1 PID: 1327 at lib/list_debug.c:56 __list_del_entry_valid_or_report+0xa3/0x120\n [...]\n RIP: 0010:__list_del_entry_valid_or_report+0xa3/0x120\n [...]\n Call Trace:\n <TASK>\n ? __list_del_entry_valid_or_report+0xa3/0x120\n ? __warn.cold+0x93/0xf2\n ? __list_del_entry_valid_or_report+0xa3/0x120\n ? report_bug+0xe6/0x170\n ? __irq_work_queue_local+0x39/0xe0\n ? handle_bug+0x58/0x90\n ? exc_invalid_op+0x13/0x60\n ? asm_exc_invalid_op+0x16/0x20\n ? __list_del_entry_valid_or_report+0xa3/0x120\n gpiod_remove_lookup_table+0x22/0x60\n new_device_store+0x315/0x350 [gpio_aggregator]\n kernfs_fop_write_iter+0x137/0x1f0\n vfs_write+0x262/0x430\n ksys_write+0x60/0xd0\n do_syscall_64+0x6c/0x180\n entry_SYSCALL_64_after_hwframe+0x76/0x7e\n [...]\n </TASK>\n ---[ end trace 0000000000000000 ]---" |
| } |
| ], |
| "affected": [ |
| { |
| "product": "Linux", |
| "vendor": "Linux", |
| "defaultStatus": "unaffected", |
| "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", |
| "programFiles": [ |
| "drivers/gpio/gpio-aggregator.c" |
| ], |
| "versions": [ |
| { |
| "version": "828546e24280f721350a7a0dcc92416e917b4382", |
| "lessThan": "fd6aa1f8cbe0979eb66ac32ebc231bf0b10a2117", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "828546e24280f721350a7a0dcc92416e917b4382", |
| "lessThan": "807789018186cf508ceb3a1f8f02935cd195717b", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "828546e24280f721350a7a0dcc92416e917b4382", |
| "lessThan": "9334c88fc2fbc6836b307d269fcc1744c69701c0", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "828546e24280f721350a7a0dcc92416e917b4382", |
| "lessThan": "d99dc8f7ea01ee1b21306e0eda8eb18a4af80db6", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "828546e24280f721350a7a0dcc92416e917b4382", |
| "lessThan": "8fb07fb1bba91d45846ed8605c3097fe67a7d54c", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "828546e24280f721350a7a0dcc92416e917b4382", |
| "lessThan": "56281a76b805b5ac61feb5d580139695a22f87f0", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "828546e24280f721350a7a0dcc92416e917b4382", |
| "lessThan": "12f65d1203507f7db3ba59930fe29a3b8eee9945", |
| "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/gpio/gpio-aggregator.c" |
| ], |
| "versions": [ |
| { |
| "version": "5.8", |
| "status": "affected" |
| }, |
| { |
| "version": "0", |
| "lessThan": "5.8", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "5.10.235", |
| "lessThanOrEqual": "5.10.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "5.15.179", |
| "lessThanOrEqual": "5.15.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.1.131", |
| "lessThanOrEqual": "6.1.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.6.83", |
| "lessThanOrEqual": "6.6.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.12.19", |
| "lessThanOrEqual": "6.12.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.13.7", |
| "lessThanOrEqual": "6.13.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.14", |
| "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": "5.8", |
| "versionEndExcluding": "5.10.235" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "5.8", |
| "versionEndExcluding": "5.15.179" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "5.8", |
| "versionEndExcluding": "6.1.131" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "5.8", |
| "versionEndExcluding": "6.6.83" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "5.8", |
| "versionEndExcluding": "6.12.19" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "5.8", |
| "versionEndExcluding": "6.13.7" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "5.8", |
| "versionEndExcluding": "6.14" |
| } |
| ] |
| } |
| ] |
| } |
| ], |
| "references": [ |
| { |
| "url": "https://git.kernel.org/stable/c/fd6aa1f8cbe0979eb66ac32ebc231bf0b10a2117" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/807789018186cf508ceb3a1f8f02935cd195717b" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/9334c88fc2fbc6836b307d269fcc1744c69701c0" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/d99dc8f7ea01ee1b21306e0eda8eb18a4af80db6" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/8fb07fb1bba91d45846ed8605c3097fe67a7d54c" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/56281a76b805b5ac61feb5d580139695a22f87f0" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/12f65d1203507f7db3ba59930fe29a3b8eee9945" |
| } |
| ], |
| "title": "gpio: aggregator: protect driver attr handlers against module unload", |
| "x_generator": { |
| "engine": "bippy-1.2.0" |
| } |
| } |
| }, |
| "cveMetadata": { |
| "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038", |
| "cveID": "CVE-2025-21943", |
| "requesterUserId": "gregkh@kernel.org", |
| "serial": "1", |
| "state": "PUBLISHED" |
| }, |
| "dataType": "CVE_RECORD", |
| "dataVersion": "5.0" |
| } |
