mirror of
https://github.com/CVEProject/cvelist.git
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113 lines
7.0 KiB
JSON
113 lines
7.0 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-2023-52562",
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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\nmm/slab_common: fix slab_caches list corruption after kmem_cache_destroy()\n\nAfter the commit in Fixes:, if a module that created a slab cache does not\nrelease all of its allocated objects before destroying the cache (at rmmod\ntime), we might end up releasing the kmem_cache object without removing it\nfrom the slab_caches list thus corrupting the list as kmem_cache_destroy()\nignores the return value from shutdown_cache(), which in turn never removes\nthe kmem_cache object from slabs_list in case __kmem_cache_shutdown() fails\nto release all of the cache's slabs.\n\nThis is easily observable on a kernel built with CONFIG_DEBUG_LIST=y\nas after that ill release the system will immediately trip on list_add,\nor list_del, assertions similar to the one shown below as soon as another\nkmem_cache gets created, or destroyed:\n\n [ 1041.213632] list_del corruption. next->prev should be ffff89f596fb5768, but was 52f1e5016aeee75d. (next=ffff89f595a1b268)\n [ 1041.219165] ------------[ cut here ]------------\n [ 1041.221517] kernel BUG at lib/list_debug.c:62!\n [ 1041.223452] invalid opcode: 0000 [#1] PREEMPT SMP PTI\n [ 1041.225408] CPU: 2 PID: 1852 Comm: rmmod Kdump: loaded Tainted: G B W OE 6.5.0 #15\n [ 1041.228244] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS edk2-20230524-3.fc37 05/24/2023\n [ 1041.231212] RIP: 0010:__list_del_entry_valid+0xae/0xb0\n\nAnother quick way to trigger this issue, in a kernel with CONFIG_SLUB=y,\nis to set slub_debug to poison the released objects and then just run\ncat /proc/slabinfo after removing the module that leaks slab objects,\nin which case the kernel will panic:\n\n [ 50.954843] general protection fault, probably for non-canonical address 0xa56b6b6b6b6b6b8b: 0000 [#1] PREEMPT SMP PTI\n [ 50.961545] CPU: 2 PID: 1495 Comm: cat Kdump: loaded Tainted: G B W OE 6.5.0 #15\n [ 50.966808] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS edk2-20230524-3.fc37 05/24/2023\n [ 50.972663] RIP: 0010:get_slabinfo+0x42/0xf0\n\nThis patch fixes this issue by properly checking shutdown_cache()'s\nreturn value before taking the kmem_cache_release() branch."
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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": "0495e337b703",
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"version_value": "a5569bb18752"
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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": "6.0",
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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": "6.0",
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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": "6.1.56",
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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": "6.5.6",
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"lessThanOrEqual": "6.5.*",
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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",
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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/a5569bb187521432f509b69dda7d29f78b2d38b0",
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"refsource": "MISC",
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"name": "https://git.kernel.org/stable/c/a5569bb187521432f509b69dda7d29f78b2d38b0"
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},
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{
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"url": "https://git.kernel.org/stable/c/51988be187b041e5355245957b0b9751fa382e0d",
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"refsource": "MISC",
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"name": "https://git.kernel.org/stable/c/51988be187b041e5355245957b0b9751fa382e0d"
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},
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{
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"url": "https://git.kernel.org/stable/c/46a9ea6681907a3be6b6b0d43776dccc62cad6cf",
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"refsource": "MISC",
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"name": "https://git.kernel.org/stable/c/46a9ea6681907a3be6b6b0d43776dccc62cad6cf"
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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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} |