{ "document":{ "aggregate_severity":{ "namespace":"https://nvd.nist.gov/vuln-metrics/cvss", "text":"HIGH" }, "category":"csaf_vex", "csaf_version":"2.0", "distribution":{ "tlp":{ "label":"WHITE", "url":"https:/www.first.org/tlp/" } }, "lang":"en", "notes":[ { "text":"In the Linux kernel, the following vulnerability has been resolved:\n\ncachefiles: fix slab-use-after-free in cachefiles_withdraw_cookie()\n\nWe got the following issue in our fault injection stress test:\n\n==================================================================\nBUG: KASAN: slab-use-after-free in cachefiles_withdraw_cookie+0x4d9/0x600\nRead of size 8 at addr ffff888118efc000 by task kworker/u78:0/109\n\nCPU: 13 PID: 109 Comm: kworker/u78:0 Not tainted 6.8.0-dirty #566\nCall Trace:\n \n kasan_report+0x93/0xc0\n cachefiles_withdraw_cookie+0x4d9/0x600\n fscache_cookie_state_machine+0x5c8/0x1230\n fscache_cookie_worker+0x91/0x1c0\n process_one_work+0x7fa/0x1800\n [...]\n\nAllocated by task 117:\n kmalloc_trace+0x1b3/0x3c0\n cachefiles_acquire_volume+0xf3/0x9c0\n fscache_create_volume_work+0x97/0x150\n process_one_work+0x7fa/0x1800\n [...]\n\nFreed by task 120301:\n kfree+0xf1/0x2c0\n cachefiles_withdraw_cache+0x3fa/0x920\n cachefiles_put_unbind_pincount+0x1f6/0x250\n cachefiles_daemon_release+0x13b/0x290\n __fput+0x204/0xa00\n task_work_run+0x139/0x230\n do_exit+0x87a/0x29b0\n [...]\n==================================================================\n\nFollowing is the process that triggers the issue:\n\n p1 | p2\n------------------------------------------------------------\n fscache_begin_lookup\n fscache_begin_volume_access\n fscache_cache_is_live(fscache_cache)\ncachefiles_daemon_release\n cachefiles_put_unbind_pincount\n cachefiles_daemon_unbind\n cachefiles_withdraw_cache\n fscache_withdraw_cache\n fscache_set_cache_state(cache, FSCACHE_CACHE_IS_WITHDRAWN);\n cachefiles_withdraw_objects(cache)\n fscache_wait_for_objects(fscache)\n atomic_read(&fscache_cache->object_count) == 0\n fscache_perform_lookup\n cachefiles_lookup_cookie\n cachefiles_alloc_object\n refcount_set(&object->ref, 1);\n object->volume = volume\n fscache_count_object(vcookie->cache);\n atomic_inc(&fscache_cache->object_count)\n cachefiles_withdraw_volumes\n cachefiles_withdraw_volume\n fscache_withdraw_volume\n __cachefiles_free_volume\n kfree(cachefiles_volume)\n fscache_cookie_state_machine\n cachefiles_withdraw_cookie\n cache = object->volume->cache;\n // cachefiles_volume UAF !!!\n\nAfter setting FSCACHE_CACHE_IS_WITHDRAWN, wait for all the cookie lookups\nto complete first, and then wait for fscache_cache->object_count == 0 to\navoid the cookie exiting after the volume has been freed and triggering\nthe above issue. Therefore call fscache_withdraw_volume() before calling\ncachefiles_withdraw_objects().\n\nThis way, after setting FSCACHE_CACHE_IS_WITHDRAWN, only the following two\ncases will occur:\n1) fscache_begin_lookup fails in fscache_begin_volume_access().\n2) fscache_withdraw_volume() will ensure that fscache_count_object() has\n been executed before calling fscache_wait_for_objects().", "category":"general", "title":"Synopsis" } ], "publisher":{ "issuing_authority":"openEuler security committee", "name":"openEuler", "namespace":"https://www.openeuler.org", "contact_details":"openeuler-security@openeuler.org", "category":"vendor" }, "references":[ { "summary":"nvd cve", "category":"external", "url":"https://nvd.nist.gov/vuln/detail/CVE-2024-41057" }, { "summary":"CVE-2024-41057 vex file", "category":"self", "url":"https://repo.openeuler.org/security/data/csaf/cve/2024/csaf-openeuler-cve-2024-41057.json" }, { "summary":"openEuler-SA-2024-2590", "category":"self", "url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2024-2590" }, { "summary":"CVE-2024-41057", "category":"self", "url":"https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2024-41057&packageName=kernel" } ], "title":"openEuler cve CVE-2024-41057", "tracking":{ "initial_release_date":"2024-12-27T20:33:52+08:00", "revision_history":[ { "date":"2024-12-27T20:33:52+08:00", "summary":"Initial", "number":"1.0.0" } ], "generator":{ "date":"2024-12-27T20:33:52+08:00", "engine":{ "name":"openEuler CSAF Tool V1.0" } }, "current_release_date":"2024-12-27T20:33:52+08:00", "id":"CVE-2024-41057", "version":"1.0.0", "status":"interim" } }, "product_tree":{ "branches":[ { "name":"openEuler", "category":"vendor", "branches":[ { "name":"openEuler", "branches":[ { "product":{ "product_identification_helper":{ "cpe":"cpe:/a:openEuler:openEuler:24.03-LTS" }, "product_id":"openEuler-24.03-LTS", "name":"openEuler-24.03-LTS" }, "name":"openEuler-24.03-LTS", 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following issue in our fault injection stress test:\n\n==================================================================\nBUG: KASAN: slab-use-after-free in cachefiles_withdraw_cookie+0x4d9/0x600\nRead of size 8 at addr ffff888118efc000 by task kworker/u78:0/109\n\nCPU: 13 PID: 109 Comm: kworker/u78:0 Not tainted 6.8.0-dirty #566\nCall Trace:\n \n kasan_report+0x93/0xc0\n cachefiles_withdraw_cookie+0x4d9/0x600\n fscache_cookie_state_machine+0x5c8/0x1230\n fscache_cookie_worker+0x91/0x1c0\n process_one_work+0x7fa/0x1800\n [...]\n\nAllocated by task 117:\n kmalloc_trace+0x1b3/0x3c0\n cachefiles_acquire_volume+0xf3/0x9c0\n fscache_create_volume_work+0x97/0x150\n process_one_work+0x7fa/0x1800\n [...]\n\nFreed by task 120301:\n kfree+0xf1/0x2c0\n cachefiles_withdraw_cache+0x3fa/0x920\n cachefiles_put_unbind_pincount+0x1f6/0x250\n cachefiles_daemon_release+0x13b/0x290\n __fput+0x204/0xa00\n task_work_run+0x139/0x230\n do_exit+0x87a/0x29b0\n [...]\n==================================================================\n\nFollowing is the process that triggers the issue:\n\n p1 | p2\n------------------------------------------------------------\n fscache_begin_lookup\n fscache_begin_volume_access\n fscache_cache_is_live(fscache_cache)\ncachefiles_daemon_release\n cachefiles_put_unbind_pincount\n cachefiles_daemon_unbind\n cachefiles_withdraw_cache\n fscache_withdraw_cache\n fscache_set_cache_state(cache, FSCACHE_CACHE_IS_WITHDRAWN);\n cachefiles_withdraw_objects(cache)\n fscache_wait_for_objects(fscache)\n atomic_read(&fscache_cache->object_count) == 0\n fscache_perform_lookup\n cachefiles_lookup_cookie\n cachefiles_alloc_object\n refcount_set(&object->ref, 1);\n object->volume = volume\n fscache_count_object(vcookie->cache);\n atomic_inc(&fscache_cache->object_count)\n cachefiles_withdraw_volumes\n cachefiles_withdraw_volume\n fscache_withdraw_volume\n __cachefiles_free_volume\n kfree(cachefiles_volume)\n fscache_cookie_state_machine\n cachefiles_withdraw_cookie\n cache = object->volume->cache;\n // cachefiles_volume UAF !!!\n\nAfter setting FSCACHE_CACHE_IS_WITHDRAWN, wait for all the cookie lookups\nto complete first, and then wait for fscache_cache->object_count == 0 to\navoid the cookie exiting after the volume has been freed and triggering\nthe above issue. Therefore call fscache_withdraw_volume() before calling\ncachefiles_withdraw_objects().\n\nThis way, after setting FSCACHE_CACHE_IS_WITHDRAWN, only the following two\ncases will occur:\n1) fscache_begin_lookup fails in fscache_begin_volume_access().\n2) fscache_withdraw_volume() will ensure that fscache_count_object() has\n been executed before calling fscache_wait_for_objects().", "category":"description", "title":"Vulnerability Description" } ], "product_status":{ "fixed":[ "openEuler-24.03-LTS:bpftool-6.6.0-72.0.0.64.oe2403.aarch64", "openEuler-24.03-LTS:bpftool-debuginfo-6.6.0-72.0.0.64.oe2403.aarch64", "openEuler-24.03-LTS:kernel-6.6.0-72.0.0.64.oe2403.aarch64", "openEuler-24.03-LTS:kernel-debuginfo-6.6.0-72.0.0.64.oe2403.aarch64", "openEuler-24.03-LTS:kernel-debugsource-6.6.0-72.0.0.64.oe2403.aarch64", "openEuler-24.03-LTS:kernel-devel-6.6.0-72.0.0.64.oe2403.aarch64", "openEuler-24.03-LTS:kernel-headers-6.6.0-72.0.0.64.oe2403.aarch64", 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"url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2024-2590" } ], "scores":[ { "cvss_v3":{ "baseSeverity":"HIGH", "baseScore":7.8, "vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version":"3.1" }, "products":[ "openEuler-24.03-LTS:bpftool-6.6.0-72.0.0.64.oe2403.aarch64", "openEuler-24.03-LTS:bpftool-debuginfo-6.6.0-72.0.0.64.oe2403.aarch64", "openEuler-24.03-LTS:kernel-6.6.0-72.0.0.64.oe2403.aarch64", "openEuler-24.03-LTS:kernel-debuginfo-6.6.0-72.0.0.64.oe2403.aarch64", "openEuler-24.03-LTS:kernel-debugsource-6.6.0-72.0.0.64.oe2403.aarch64", "openEuler-24.03-LTS:kernel-devel-6.6.0-72.0.0.64.oe2403.aarch64", "openEuler-24.03-LTS:kernel-headers-6.6.0-72.0.0.64.oe2403.aarch64", "openEuler-24.03-LTS:kernel-source-6.6.0-72.0.0.64.oe2403.aarch64", "openEuler-24.03-LTS:kernel-tools-6.6.0-72.0.0.64.oe2403.aarch64", "openEuler-24.03-LTS:kernel-tools-debuginfo-6.6.0-72.0.0.64.oe2403.aarch64", 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