{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
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"cveId": "CVE-2024-46786",
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"state": "PUBLISHED",
"assignerShortName": "Linux",
"dateReserved": "2024-09-11T15:12:18.277Z",
"datePublished": "2024-09-18T07:12:42.332Z",
"dateUpdated": "2026-07-14T12:38:07.095Z"
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"dateUpdated": "2026-05-11T20:36:31.083Z"
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"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfscache: delete fscache_cookie_lru_timer when fscache exits to avoid UAF\n\nThe fscache_cookie_lru_timer is initialized when the fscache module\nis inserted, but is not deleted when the fscache module is removed.\nIf timer_reduce() is called before removing the fscache module,\nthe fscache_cookie_lru_timer will be added to the timer list of\nthe current cpu. Afterwards, a use-after-free will be triggered\nin the softIRQ after removing the fscache module, as follows:\n\n==================================================================\nBUG: unable to handle page fault for address: fffffbfff803c9e9\n PF: supervisor read access in kernel mode\n PF: error_code(0x0000) - not-present page\nPGD 21ffea067 P4D 21ffea067 PUD 21ffe6067 PMD 110a7c067 PTE 0\nOops: Oops: 0000 [#1] PREEMPT SMP KASAN PTI\nCPU: 1 UID: 0 PID: 0 Comm: swapper/1 Tainted: G W 6.11.0-rc3 #855\nTainted: [W]=WARN\nRIP: 0010:__run_timer_base.part.0+0x254/0x8a0\nCall Trace:\n \n tmigr_handle_remote_up+0x627/0x810\n __walk_groups.isra.0+0x47/0x140\n tmigr_handle_remote+0x1fa/0x2f0\n handle_softirqs+0x180/0x590\n irq_exit_rcu+0x84/0xb0\n sysvec_apic_timer_interrupt+0x6e/0x90\n \n \n asm_sysvec_apic_timer_interrupt+0x1a/0x20\nRIP: 0010:default_idle+0xf/0x20\n default_idle_call+0x38/0x60\n do_idle+0x2b5/0x300\n cpu_startup_entry+0x54/0x60\n start_secondary+0x20d/0x280\n common_startup_64+0x13e/0x148\n \nModules linked in: [last unloaded: netfs]\n==================================================================\n\nTherefore delete fscache_cookie_lru_timer when removing the fscahe module."
}
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"vendor": "Linux",
"defaultStatus": "unaffected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"fs/netfs/fscache_main.c"
],
"versions": [
{
"version": "12bb21a29c19aae50cfad4e2bb5c943108f34a7d",
"lessThan": "c1fc36d5470335546c45799d94d7bb2cbc09e8b7",
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{
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"version": "0",
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"status": "unaffected",
"versionType": "semver"
},
{
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"lessThanOrEqual": "6.1.*",
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"versionType": "semver"
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{
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"cpeApplicability": [
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"nodes": [
{
"operator": "OR",
"negate": false,
"cpeMatch": [
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"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"vulnerable": true,
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"url": "https://git.kernel.org/stable/c/c1fc36d5470335546c45799d94d7bb2cbc09e8b7"
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{
"url": "https://git.kernel.org/stable/c/72a6e22c604c95ddb3b10b5d3bb85b6ff4dbc34f"
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"title": "fscache: delete fscache_cookie_lru_timer when fscache exits to avoid UAF",
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