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https://github.com/CVEProject/cvelist.git
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103 lines
6.1 KiB
JSON
103 lines
6.1 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-2024-35929",
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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\nrcu/nocb: Fix WARN_ON_ONCE() in the rcu_nocb_bypass_lock()\n\nFor the kernels built with CONFIG_RCU_NOCB_CPU_DEFAULT_ALL=y and\nCONFIG_RCU_LAZY=y, the following scenarios will trigger WARN_ON_ONCE()\nin the rcu_nocb_bypass_lock() and rcu_nocb_wait_contended() functions:\n\n CPU2 CPU11\nkthread\nrcu_nocb_cb_kthread ksys_write\nrcu_do_batch vfs_write\nrcu_torture_timer_cb proc_sys_write\n__kmem_cache_free proc_sys_call_handler\nkmemleak_free drop_caches_sysctl_handler\ndelete_object_full drop_slab\n__delete_object shrink_slab\nput_object lazy_rcu_shrink_scan\ncall_rcu rcu_nocb_flush_bypass\n__call_rcu_commn rcu_nocb_bypass_lock\n raw_spin_trylock(&rdp->nocb_bypass_lock) fail\n atomic_inc(&rdp->nocb_lock_contended);\nrcu_nocb_wait_contended WARN_ON_ONCE(smp_processor_id() != rdp->cpu);\n WARN_ON_ONCE(atomic_read(&rdp->nocb_lock_contended)) |\n |_ _ _ _ _ _ _ _ _ _same rdp and rdp->cpu != 11_ _ _ _ _ _ _ _ _ __|\n\nReproduce this bug with \"echo 3 > /proc/sys/vm/drop_caches\".\n\nThis commit therefore uses rcu_nocb_try_flush_bypass() instead of\nrcu_nocb_flush_bypass() in lazy_rcu_shrink_scan(). If the nocb_bypass\nqueue is being flushed, then rcu_nocb_try_flush_bypass will return\ndirectly."
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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": "1da177e4c3f4",
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"version_value": "4d58c9fb45c7"
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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": "6.6.27",
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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": "6.8.6",
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"lessThanOrEqual": "6.8.*",
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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",
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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/4d58c9fb45c70e62c19e8be3f3605889c47601bc",
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"refsource": "MISC",
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"name": "https://git.kernel.org/stable/c/4d58c9fb45c70e62c19e8be3f3605889c47601bc"
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},
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{
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"url": "https://git.kernel.org/stable/c/927d1f4f77e4784ab3944a9df86ab14d1cd3185a",
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"refsource": "MISC",
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"name": "https://git.kernel.org/stable/c/927d1f4f77e4784ab3944a9df86ab14d1cd3185a"
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},
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{
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"url": "https://git.kernel.org/stable/c/dda98810b552fc6bf650f4270edeebdc2f28bd3f",
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"refsource": "MISC",
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"name": "https://git.kernel.org/stable/c/dda98810b552fc6bf650f4270edeebdc2f28bd3f"
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}
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]
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},
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"generator": {
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"engine": "bippy-9e1c9544281a"
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}
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} |