226 lines
12 KiB
JSON
226 lines
12 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2024-40998",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2024-07-12T12:17:45.607Z",
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"datePublished": "2024-07-12T12:37:39.823Z",
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"dateUpdated": "2026-10-30T12:18:38.884Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-10-30T12:18:38.884Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: fix uninitialized ratelimit_state->lock access in __ext4_fill_super()\n\nIn the following concurrency we will access the uninitialized rs->lock:\n\next4_fill_super\n ext4_register_sysfs\n // sysfs registered msg_ratelimit_interval_ms\n // Other processes modify rs->interval to\n // non-zero via msg_ratelimit_interval_ms\n ext4_orphan_cleanup\n ext4_msg(sb, KERN_INFO, \"Errors on filesystem, \"\n __ext4_msg\n ___ratelimit(&(EXT4_SB(sb)->s_msg_ratelimit_state)\n if (!rs->interval) // do nothing if interval is 0\n return 1;\n raw_spin_trylock_irqsave(&rs->lock, flags)\n raw_spin_trylock(lock)\n _raw_spin_trylock\n __raw_spin_trylock\n spin_acquire(&lock->dep_map, 0, 1, _RET_IP_)\n lock_acquire\n __lock_acquire\n register_lock_class\n assign_lock_key\n dump_stack();\n ratelimit_state_init(&sbi->s_msg_ratelimit_state, 5 * HZ, 10);\n raw_spin_lock_init(&rs->lock);\n // init rs->lock here\n\nand get the following dump_stack:\n\n=========================================================\nINFO: trying to register non-static key.\nThe code is fine but needs lockdep annotation, or maybe\nyou didn't initialize this object before use?\nturning off the locking correctness validator.\nCPU: 12 PID: 753 Comm: mount Tainted: G E 6.7.0-rc6-next-20231222 #504\n[...]\nCall Trace:\n dump_stack_lvl+0xc5/0x170\n dump_stack+0x18/0x30\n register_lock_class+0x740/0x7c0\n __lock_acquire+0x69/0x13a0\n lock_acquire+0x120/0x450\n _raw_spin_trylock+0x98/0xd0\n ___ratelimit+0xf6/0x220\n __ext4_msg+0x7f/0x160 [ext4]\n ext4_orphan_cleanup+0x665/0x740 [ext4]\n __ext4_fill_super+0x21ea/0x2b10 [ext4]\n ext4_fill_super+0x14d/0x360 [ext4]\n[...]\n=========================================================\n\nNormally interval is 0 until s_msg_ratelimit_state is initialized, so\n___ratelimit() does nothing. But registering sysfs precedes initializing\nrs->lock, so it is possible to change rs->interval to a non-zero value\nvia the msg_ratelimit_interval_ms interface of sysfs while rs->lock is\nuninitialized, and then a call to ext4_msg triggers the problem by\naccessing an uninitialized rs->lock. Therefore register sysfs after all\ninitializations are complete to avoid such problems."
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"fs/ext4/super.c"
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],
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"versions": [
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{
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"version": "efbed4dc5857f845d787e406ce85097d1ccc5c4f",
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"lessThan": "1e2df0ee0afd6d4b436a740f04f7a759e6531005",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "efbed4dc5857f845d787e406ce85097d1ccc5c4f",
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"lessThan": "23afcd52af06880c6c913a0ad99022b8937b575c",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "efbed4dc5857f845d787e406ce85097d1ccc5c4f",
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"lessThan": "645267906944a9aeec9d5c56ee24a9096a288798",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "efbed4dc5857f845d787e406ce85097d1ccc5c4f",
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"lessThan": "b4b4fda34e535756f9e774fb2d09c4537b7dfd1c",
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"status": "affected",
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"versionType": "git"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"fs/ext4/super.c"
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],
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"versions": [
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{
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"version": "3.13",
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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": "3.13",
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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": "6.1.191",
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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": "6.6.36",
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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": "6.9.7",
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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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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "3.13",
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"versionEndExcluding": "6.1.191"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionEndExcluding": "6.6.36"
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"versionEndExcluding": "6.9.7"
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}
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/1e2df0ee0afd6d4b436a740f04f7a759e6531005"
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},
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{
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"url": "https://git.kernel.org/stable/c/23afcd52af06880c6c913a0ad99022b8937b575c"
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},
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{
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"url": "https://git.kernel.org/stable/c/645267906944a9aeec9d5c56ee24a9096a288798"
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{
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"url": "https://git.kernel.org/stable/c/b4b4fda34e535756f9e774fb2d09c4537b7dfd1c"
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}
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],
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"title": "ext4: fix uninitialized ratelimit_state->lock access in __ext4_fill_super()",
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"dateUpdated": "2024-08-02T04:39:56.156Z"
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"title": "CVE Program Container",
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{
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"metrics": [
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{
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"type": "ssvc",
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"content": {
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"id": "CVE-2024-40998",
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"role": "CISA Coordinator",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "no"
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{
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"Technical Impact": "partial"
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"version": "2.0.3",
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"timestamp": "2024-09-10T17:01:25.647023Z"
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}
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],
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"title": "CISA ADP Vulnrichment",
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"dateUpdated": "2024-09-11T17:34:19.460Z"
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