{ "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:mm/shmem: disable PMD-sized page cache if neededFor shmem files, it s possible that PMD-sized page cache can t besupported by xarray. For example, 512MB page cache on ARM64 when the basepage size is 64KB can t be supported by xarray. It leads to errors as thefollowing messages indicate when this sort of xarray entry is split.WARNING: CPU: 34 PID: 7578 at lib/xarray.c:1025 xas_split_alloc+0xf8/0x128Modules linked in: binfmt_misc nft_fib_inet nft_fib_ipv4 nft_fib_ipv6 nft_fib nft_reject_inet nf_reject_ipv4 nf_reject_ipv6 nft_reject nft_ct nft_chain_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 ip_set rfkill nf_tables nfnetlink vfat fat virtio_balloon drm fuse xfs libcrc32c crct10dif_ce ghash_ce sha2_ce sha256_arm64 sha1_ce virtio_net net_failover virtio_console virtio_blk failover dimlib virtio_mmioCPU: 34 PID: 7578 Comm: test Kdump: loaded Tainted: G W 6.10.0-rc5-gavin+ #9Hardware name: QEMU KVM Virtual Machine, BIOS edk2-20240524-1.el9 05/24/2024pstate: 83400005 (Nzcv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--)pc : xas_split_alloc+0xf8/0x128lr : split_huge_page_to_list_to_order+0x1c4/0x720sp : ffff8000882af5f0x29: ffff8000882af5f0 x28: ffff8000882af650 x27: ffff8000882af768x26: 0000000000000cc0 x25: 000000000000000d x24: ffff00010625b858x23: ffff8000882af650 x22: ffffffdfc0900000 x21: 0000000000000000x20: 0000000000000000 x19: ffffffdfc0900000 x18: 0000000000000000x17: 0000000000000000 x16: 0000018000000000 x15: 52f8004000000000x14: 0000e00000000000 x13: 0000000000002000 x12: 0000000000000020x11: 52f8000000000000 x10: 52f8e1c0ffff6000 x9 : ffffbeb9619a681cx8 : 0000000000000003 x7 : 0000000000000000 x6 : ffff00010b02ddb0x5 : ffffbeb96395e378 x4 : 0000000000000000 x3 : 0000000000000cc0x2 : 000000000000000d x1 : 000000000000000c x0 : 0000000000000000Call trace: xas_split_alloc+0xf8/0x128 split_huge_page_to_list_to_order+0x1c4/0x720 truncate_inode_partial_folio+0xdc/0x160 shmem_undo_range+0x2bc/0x6a8 shmem_fallocate+0x134/0x430 vfs_fallocate+0x124/0x2e8 ksys_fallocate+0x4c/0xa0 __arm64_sys_fallocate+0x24/0x38 invoke_syscall.constprop.0+0x7c/0xd8 do_el0_svc+0xb4/0xd0 el0_svc+0x44/0x1d8 el0t_64_sync_handler+0x134/0x150 el0t_64_sync+0x17c/0x180Fix it by disabling PMD-sized page cache when HPAGE_PMD_ORDER is largerthan MAX_PAGECACHE_ORDER. As Matthew Wilcox pointed, the page cache in ashmem file isn t represented by a multi-index entry and doesn t have thislimitation when the xarry entry is split until commit 6b24ca4a1a8d ( mm:Use multi-index entries in the page cache ).", "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-2024-42241" }, { "summary":"CVE-2024-42241 vex file", "category":"self", "url":"https://repo.openeuler.org/security/data/csaf/cve/2024/csaf-openeuler-cve-2024-42241.json" }, { "summary":"openEuler-SA-2024-2124", "category":"self", "url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2024-2124" }, { "summary":"CVE-2024-42241", "category":"self", "url":"https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2024-42241&packageName=kernel" } ], "title":"openEuler cve CVE-2024-42241", "tracking":{ "initial_release_date":"2024-09-14T20:21:42+08:00", "revision_history":[ { "date":"2024-09-14T20:21:42+08:00", "summary":"Initial", "number":"1.0.0" } ], "generator":{ "date":"2024-09-14T20:21:42+08:00", "engine":{ "name":"openEuler CSAF Tool V1.0" } }, "current_release_date":"2024-09-14T20:21:42+08:00", "id":"CVE-2024-42241", "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":{ 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PMD-sized page cache can t besupported by xarray. For example, 512MB page cache on ARM64 when the basepage size is 64KB can t be supported by xarray. It leads to errors as thefollowing messages indicate when this sort of xarray entry is split.WARNING: CPU: 34 PID: 7578 at lib/xarray.c:1025 xas_split_alloc+0xf8/0x128Modules linked in: binfmt_misc nft_fib_inet nft_fib_ipv4 nft_fib_ipv6 nft_fib nft_reject_inet nf_reject_ipv4 nf_reject_ipv6 nft_reject nft_ct nft_chain_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 ip_set rfkill nf_tables nfnetlink vfat fat virtio_balloon drm fuse xfs libcrc32c crct10dif_ce ghash_ce sha2_ce sha256_arm64 sha1_ce virtio_net net_failover virtio_console virtio_blk failover dimlib virtio_mmioCPU: 34 PID: 7578 Comm: test Kdump: loaded Tainted: G W 6.10.0-rc5-gavin+ #9Hardware name: QEMU KVM Virtual Machine, BIOS edk2-20240524-1.el9 05/24/2024pstate: 83400005 (Nzcv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--)pc : xas_split_alloc+0xf8/0x128lr : split_huge_page_to_list_to_order+0x1c4/0x720sp : ffff8000882af5f0x29: ffff8000882af5f0 x28: ffff8000882af650 x27: ffff8000882af768x26: 0000000000000cc0 x25: 000000000000000d x24: ffff00010625b858x23: ffff8000882af650 x22: ffffffdfc0900000 x21: 0000000000000000x20: 0000000000000000 x19: ffffffdfc0900000 x18: 0000000000000000x17: 0000000000000000 x16: 0000018000000000 x15: 52f8004000000000x14: 0000e00000000000 x13: 0000000000002000 x12: 0000000000000020x11: 52f8000000000000 x10: 52f8e1c0ffff6000 x9 : ffffbeb9619a681cx8 : 0000000000000003 x7 : 0000000000000000 x6 : ffff00010b02ddb0x5 : ffffbeb96395e378 x4 : 0000000000000000 x3 : 0000000000000cc0x2 : 000000000000000d x1 : 000000000000000c x0 : 0000000000000000Call trace: xas_split_alloc+0xf8/0x128 split_huge_page_to_list_to_order+0x1c4/0x720 truncate_inode_partial_folio+0xdc/0x160 shmem_undo_range+0x2bc/0x6a8 shmem_fallocate+0x134/0x430 vfs_fallocate+0x124/0x2e8 ksys_fallocate+0x4c/0xa0 __arm64_sys_fallocate+0x24/0x38 invoke_syscall.constprop.0+0x7c/0xd8 do_el0_svc+0xb4/0xd0 el0_svc+0x44/0x1d8 el0t_64_sync_handler+0x134/0x150 el0t_64_sync+0x17c/0x180Fix it by disabling PMD-sized page cache when HPAGE_PMD_ORDER is largerthan MAX_PAGECACHE_ORDER. As Matthew Wilcox pointed, the page cache in ashmem file isn t represented by a multi-index entry and doesn t have thislimitation when the xarry entry is split until commit 6b24ca4a1a8d ( mm:Use multi-index entries in the page cache ).", "category":"description", "title":"Vulnerability Description" } ], "product_status":{ "fixed":[ "openEuler-24.03-LTS:bpftool-6.6.0-41.0.0.48.oe2403.aarch64", "openEuler-24.03-LTS:bpftool-debuginfo-6.6.0-41.0.0.48.oe2403.aarch64", "openEuler-24.03-LTS:kernel-6.6.0-41.0.0.48.oe2403.aarch64", "openEuler-24.03-LTS:kernel-debuginfo-6.6.0-41.0.0.48.oe2403.aarch64", "openEuler-24.03-LTS:kernel-debugsource-6.6.0-41.0.0.48.oe2403.aarch64", "openEuler-24.03-LTS:kernel-devel-6.6.0-41.0.0.48.oe2403.aarch64", "openEuler-24.03-LTS:kernel-headers-6.6.0-41.0.0.48.oe2403.aarch64", "openEuler-24.03-LTS:kernel-source-6.6.0-41.0.0.48.oe2403.aarch64", "openEuler-24.03-LTS:kernel-tools-6.6.0-41.0.0.48.oe2403.aarch64", 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"vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version":"3.1" }, "products":[ "openEuler-24.03-LTS:bpftool-6.6.0-41.0.0.48.oe2403.aarch64", "openEuler-24.03-LTS:bpftool-debuginfo-6.6.0-41.0.0.48.oe2403.aarch64", "openEuler-24.03-LTS:kernel-6.6.0-41.0.0.48.oe2403.aarch64", "openEuler-24.03-LTS:kernel-debuginfo-6.6.0-41.0.0.48.oe2403.aarch64", "openEuler-24.03-LTS:kernel-debugsource-6.6.0-41.0.0.48.oe2403.aarch64", "openEuler-24.03-LTS:kernel-devel-6.6.0-41.0.0.48.oe2403.aarch64", "openEuler-24.03-LTS:kernel-headers-6.6.0-41.0.0.48.oe2403.aarch64", "openEuler-24.03-LTS:kernel-source-6.6.0-41.0.0.48.oe2403.aarch64", "openEuler-24.03-LTS:kernel-tools-6.6.0-41.0.0.48.oe2403.aarch64", "openEuler-24.03-LTS:kernel-tools-debuginfo-6.6.0-41.0.0.48.oe2403.aarch64", "openEuler-24.03-LTS:kernel-tools-devel-6.6.0-41.0.0.48.oe2403.aarch64", "openEuler-24.03-LTS:perf-6.6.0-41.0.0.48.oe2403.aarch64", "openEuler-24.03-LTS:perf-debuginfo-6.6.0-41.0.0.48.oe2403.aarch64", 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"openEuler-24.03-LTS:perf-debuginfo-6.6.0-41.0.0.48.oe2403.x86_64", "openEuler-24.03-LTS:python3-perf-6.6.0-41.0.0.48.oe2403.x86_64", "openEuler-24.03-LTS:python3-perf-debuginfo-6.6.0-41.0.0.48.oe2403.x86_64", "openEuler-24.03-LTS:kernel-6.6.0-41.0.0.48.oe2403.src" ] } ], "threats":[ { "details":"Medium", "category":"impact" } ], "title":"CVE-2024-42241" } ] }