mirror of
https://github.com/CVEProject/cvelist.git
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168 lines
10 KiB
JSON
168 lines
10 KiB
JSON
{
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"data_version": "4.0",
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"data_type": "CVE",
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"data_format": "MITRE",
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"CVE_data_meta": {
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"ID": "CVE-2024-39501",
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"ASSIGNER": "cve@kernel.org",
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"STATE": "PUBLIC"
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},
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"description": {
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"description_data": [
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{
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"lang": "eng",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrivers: core: synchronize really_probe() and dev_uevent()\n\nSynchronize the dev->driver usage in really_probe() and dev_uevent().\nThese can run in different threads, what can result in the following\nrace condition for dev->driver uninitialization:\n\nThread #1:\n==========\n\nreally_probe() {\n...\nprobe_failed:\n...\ndevice_unbind_cleanup(dev) {\n ...\n dev->driver = NULL; // <= Failed probe sets dev->driver to NULL\n ...\n }\n...\n}\n\nThread #2:\n==========\n\ndev_uevent() {\n...\nif (dev->driver)\n // If dev->driver is NULLed from really_probe() from here on,\n // after above check, the system crashes\n add_uevent_var(env, \"DRIVER=%s\", dev->driver->name);\n...\n}\n\nreally_probe() holds the lock, already. So nothing needs to be done\nthere. dev_uevent() is called with lock held, often, too. But not\nalways. What implies that we can't add any locking in dev_uevent()\nitself. So fix this race by adding the lock to the non-protected\npath. This is the path where above race is observed:\n\n dev_uevent+0x235/0x380\n uevent_show+0x10c/0x1f0 <= Add lock here\n dev_attr_show+0x3a/0xa0\n sysfs_kf_seq_show+0x17c/0x250\n kernfs_seq_show+0x7c/0x90\n seq_read_iter+0x2d7/0x940\n kernfs_fop_read_iter+0xc6/0x310\n vfs_read+0x5bc/0x6b0\n ksys_read+0xeb/0x1b0\n __x64_sys_read+0x42/0x50\n x64_sys_call+0x27ad/0x2d30\n do_syscall_64+0xcd/0x1d0\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\n\nSimilar cases are reported by syzkaller in\n\nhttps://syzkaller.appspot.com/bug?extid=ffa8143439596313a85a\n\nBut these are regarding the *initialization* of dev->driver\n\ndev->driver = drv;\n\nAs this switches dev->driver to non-NULL these reports can be considered\nto be false-positives (which should be \"fixed\" by this commit, as well,\nthough).\n\nThe same issue was reported and tried to be fixed back in 2015 in\n\nhttps://lore.kernel.org/lkml/1421259054-2574-1-git-send-email-a.sangwan@samsung.com/\n\nalready."
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}
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]
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},
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"problemtype": {
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"problemtype_data": [
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{
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"description": [
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{
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"lang": "eng",
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"value": "n/a"
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}
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]
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}
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]
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},
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"affects": {
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"vendor": {
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"vendor_data": [
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{
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"vendor_name": "Linux",
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"product": {
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"product_data": [
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{
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"product_name": "Linux",
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"version": {
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"version_data": [
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{
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"version_affected": "<",
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"version_name": "239378f16aa1",
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"version_value": "bb3641a58317"
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},
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{
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"version_value": "not down converted",
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"x_cve_json_5_version_data": {
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"versions": [
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{
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"version": "2.6.21",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "2.6.21",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "4.19.317",
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"lessThanOrEqual": "4.19.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.4.279",
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"lessThanOrEqual": "5.4.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.10.221",
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"lessThanOrEqual": "5.10.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.15.162",
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"lessThanOrEqual": "5.15.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.1.95",
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"lessThanOrEqual": "6.1.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.6.35",
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"lessThanOrEqual": "6.6.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.9.6",
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"lessThanOrEqual": "6.9.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.10",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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],
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"defaultStatus": "affected"
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}
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}
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]
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}
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}
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]
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}
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}
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]
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}
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},
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"references": {
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"reference_data": [
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{
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"url": "https://git.kernel.org/stable/c/bb3641a5831789d83a58a39ed4a928bcbece7080",
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"refsource": "MISC",
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"name": "https://git.kernel.org/stable/c/bb3641a5831789d83a58a39ed4a928bcbece7080"
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},
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{
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"url": "https://git.kernel.org/stable/c/13d25e82b6d00d743c7961dcb260329f86bedf7c",
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"refsource": "MISC",
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"name": "https://git.kernel.org/stable/c/13d25e82b6d00d743c7961dcb260329f86bedf7c"
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},
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{
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"url": "https://git.kernel.org/stable/c/760603e30bf19d7b4c28e9d81f18b54fa3b745ad",
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"refsource": "MISC",
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"name": "https://git.kernel.org/stable/c/760603e30bf19d7b4c28e9d81f18b54fa3b745ad"
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},
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{
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"url": "https://git.kernel.org/stable/c/ec772ed7cb21b46fb132f89241682553efd0b721",
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"refsource": "MISC",
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"name": "https://git.kernel.org/stable/c/ec772ed7cb21b46fb132f89241682553efd0b721"
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},
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{
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"url": "https://git.kernel.org/stable/c/08891eeaa97c079b7f95d60b62dcf0e3ce034b69",
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"refsource": "MISC",
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"name": "https://git.kernel.org/stable/c/08891eeaa97c079b7f95d60b62dcf0e3ce034b69"
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},
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{
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"url": "https://git.kernel.org/stable/c/a42b0060d6ff2f7e59290a26d5f162a3c6329b90",
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"refsource": "MISC",
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"name": "https://git.kernel.org/stable/c/a42b0060d6ff2f7e59290a26d5f162a3c6329b90"
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},
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{
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"url": "https://git.kernel.org/stable/c/95d03d369ea647b89e950667f1c3363ea6f564e6",
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"refsource": "MISC",
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"name": "https://git.kernel.org/stable/c/95d03d369ea647b89e950667f1c3363ea6f564e6"
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},
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{
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"url": "https://git.kernel.org/stable/c/c0a40097f0bc81deafc15f9195d1fb54595cd6d0",
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"refsource": "MISC",
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"name": "https://git.kernel.org/stable/c/c0a40097f0bc81deafc15f9195d1fb54595cd6d0"
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}
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]
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},
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"generator": {
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} |