{ "document":{ "aggregate_severity":{ "namespace":"https://nvd.nist.gov/vuln-metrics/cvss", "text":"MEDIUM" }, "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 dentry leak in cachefiles_open_file()\n\nA dentry leak may be caused when a lookup cookie and a cull are concurrent:\n\n P1 | P2\n-----------------------------------------------------------\ncachefiles_lookup_cookie\n cachefiles_look_up_object\n lookup_one_positive_unlocked\n // get dentry\n cachefiles_cull\n inode->i_flags |= S_KERNEL_FILE;\n cachefiles_open_file\n cachefiles_mark_inode_in_use\n __cachefiles_mark_inode_in_use\n can_use = false\n if (!(inode->i_flags & S_KERNEL_FILE))\n can_use = true\n\t return false\n return false\n // Returns an error but doesn't put dentry\n\nAfter that the following WARNING will be triggered when the backend folder\nis umounted:\n\n==================================================================\nBUG: Dentry 000000008ad87947{i=7a,n=Dx_1_1.img} still in use (1) [unmount of ext4 sda]\nWARNING: CPU: 4 PID: 359261 at fs/dcache.c:1767 umount_check+0x5d/0x70\nCPU: 4 PID: 359261 Comm: umount Not tainted 6.6.0-dirty #25\nRIP: 0010:umount_check+0x5d/0x70\nCall Trace:\n \n d_walk+0xda/0x2b0\n do_one_tree+0x20/0x40\n shrink_dcache_for_umount+0x2c/0x90\n generic_shutdown_super+0x20/0x160\n kill_block_super+0x1a/0x40\n ext4_kill_sb+0x22/0x40\n deactivate_locked_super+0x35/0x80\n cleanup_mnt+0x104/0x160\n==================================================================\n\nWhether cachefiles_open_file() returns true or false, the reference count\nobtained by lookup_positive_unlocked() in cachefiles_look_up_object()\nshould be released.\n\nTherefore release that reference count in cachefiles_look_up_object() to\nfix the above issue and simplify the code.", "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-2024-49870" }, { "summary":"CVE-2024-49870 vex file", "category":"self", "url":"https://repo.openeuler.org/security/data/csaf/cve/2024/csaf-openeuler-cve-2024-49870.json" }, { "summary":"openEuler-SA-2024-2367", "category":"self", "url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2024-2367" }, { "summary":"CVE-2024-49870", "category":"self", "url":"https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2024-49870&packageName=kernel" } ], "title":"openEuler cve CVE-2024-49870", "tracking":{ "initial_release_date":"2024-11-08T23:10:15+08:00", "revision_history":[ { "date":"2024-11-08T23:10:15+08:00", "summary":"Initial", "number":"1.0.0" } ], "generator":{ "date":"2024-11-08T23:10:15+08:00", "engine":{ "name":"openEuler CSAF Tool V1.0" } }, "current_release_date":"2024-11-08T23:10:15+08:00", "id":"CVE-2024-49870", "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", "category":"product_version" } ], "category":"product_name" }, { "name":"aarch64", "branches":[ { "product":{ "product_identification_helper":{ "cpe":"cpe:/a:openEuler:openEuler:24.03-LTS" }, "product_id":"bpftool-6.6.0-50.0.0.55.oe2403.aarch64.rpm", "name":"bpftool-6.6.0-50.0.0.55.oe2403.aarch64.rpm" }, "name":"bpftool-6.6.0-50.0.0.55.oe2403.aarch64.rpm", "category":"product_version" }, { "product":{ 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if (!(inode->i_flags & S_KERNEL_FILE))\n can_use = true\n\t return false\n return false\n // Returns an error but doesn't put dentry\n\nAfter that the following WARNING will be triggered when the backend folder\nis umounted:\n\n==================================================================\nBUG: Dentry 000000008ad87947{i=7a,n=Dx_1_1.img} still in use (1) [unmount of ext4 sda]\nWARNING: CPU: 4 PID: 359261 at fs/dcache.c:1767 umount_check+0x5d/0x70\nCPU: 4 PID: 359261 Comm: umount Not tainted 6.6.0-dirty #25\nRIP: 0010:umount_check+0x5d/0x70\nCall Trace:\n \n d_walk+0xda/0x2b0\n do_one_tree+0x20/0x40\n shrink_dcache_for_umount+0x2c/0x90\n generic_shutdown_super+0x20/0x160\n kill_block_super+0x1a/0x40\n ext4_kill_sb+0x22/0x40\n deactivate_locked_super+0x35/0x80\n cleanup_mnt+0x104/0x160\n==================================================================\n\nWhether cachefiles_open_file() returns true or false, the reference count\nobtained by lookup_positive_unlocked() in cachefiles_look_up_object()\nshould be released.\n\nTherefore release that reference count in cachefiles_look_up_object() to\nfix the above issue and simplify the code.", "category":"description", "title":"Vulnerability Description" } ], "product_status":{ "fixed":[ "openEuler-24.03-LTS:bpftool-6.6.0-50.0.0.55.oe2403.aarch64", "openEuler-24.03-LTS:bpftool-debuginfo-6.6.0-50.0.0.55.oe2403.aarch64", "openEuler-24.03-LTS:kernel-6.6.0-50.0.0.55.oe2403.aarch64", "openEuler-24.03-LTS:kernel-debuginfo-6.6.0-50.0.0.55.oe2403.aarch64", "openEuler-24.03-LTS:kernel-debugsource-6.6.0-50.0.0.55.oe2403.aarch64", "openEuler-24.03-LTS:kernel-devel-6.6.0-50.0.0.55.oe2403.aarch64", "openEuler-24.03-LTS:kernel-headers-6.6.0-50.0.0.55.oe2403.aarch64", "openEuler-24.03-LTS:kernel-source-6.6.0-50.0.0.55.oe2403.aarch64", "openEuler-24.03-LTS:kernel-tools-6.6.0-50.0.0.55.oe2403.aarch64", "openEuler-24.03-LTS:kernel-tools-debuginfo-6.6.0-50.0.0.55.oe2403.aarch64", 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