CVSS: -EPSS: 0%CPEs: 12EXPL: 0CVE-2024-42304 – ext4: make sure the first directory block is not a hole
https://notcve.org/view.php?id=CVE-2024-42304
In the Linux kernel, the following vulnerability has been resolved: ext4: make sure the first directory block is not a hole The syzbot constructs a directory that has no dirblock but is non-inline, i.e. the first directory block is a hole. And no errors are reported when creating files in this directory in the following flow. ext4_mknod ... ext4_add_entry // Read block 0 ext4_read_dirblock(dir, block, DIRENT) bh = ext4_bread(NULL, inode, block, 0) if (!bh && (type == INDEX || type == DIRENT_HTREE)) // The first directory block is a hole // But type == DIRENT, so no error is reported. After that, we get a directory block without '.' and '..' but with a valid dentry. This may cause some code that relies on dot or dotdot (such as make_indexed_dir()) to crash. Therefore when ext4_read_dirblock() finds that the first directory block is a hole report that the filesystem is corrupted and return an error to avoid loading corrupted data from disk causing something bad. • https://git.kernel.org/stable/c/3a17ca864baffc0c6f6e8aad525aa4365775a193 https://git.kernel.org/stable/c/4e19d6b65fb4fc42e352ce9883649e049da14743 https://git.kernel.org/stable/c/3f0307b0d2d8b333a6964fc4c820dc86896fd1cf https://git.kernel.org/stable/c/514631c2225c1fd556c799cc1893fb27b0f48f00 https://git.kernel.org/stable/c/7f1f86276515f6816a98f6ca3ef99c827d54642f https://git.kernel.org/stable/c/5021b7a5bdd6bb859eb648c3da71cdd6aae1d133 https://git.kernel.org/stable/c/d81d7e347d1f1f48a5634607d39eb90c161c8afe https://git.kernel.org/stable/c/e02f9941e8c011aa3eafa799def6a134c •
CVSS: -EPSS: 0%CPEs: 7EXPL: 0CVE-2024-42302 – PCI/DPC: Fix use-after-free on concurrent DPC and hot-removal
https://notcve.org/view.php?id=CVE-2024-42302
In the Linux kernel, the following vulnerability has been resolved: PCI/DPC: Fix use-after-free on concurrent DPC and hot-removal Keith reports a use-after-free when a DPC event occurs concurrently to hot-removal of the same portion of the hierarchy: The dpc_handler() awaits readiness of the secondary bus below the Downstream Port where the DPC event occurred. To do so, it polls the config space of the first child device on the secondary bus. If that child device is concurrently removed, accesses to its struct pci_dev cause the kernel to oops. That's because pci_bridge_wait_for_secondary_bus() neglects to hold a reference on the child device. Before v6.3, the function was only called on resume from system sleep or on runtime resume. Holding a reference wasn't necessary back then because the pciehp IRQ thread could never run concurrently. • https://git.kernel.org/stable/c/d0292124bb5787a2f1ab1316509e801ca89c10fb https://git.kernel.org/stable/c/ffe2318405e605f1b3985ce188eff69e6d1d1baa https://git.kernel.org/stable/c/189f856e76f5463f59efb5fc18dcc1692d04c41a https://git.kernel.org/stable/c/53b54ad074de1896f8b021615f65b27f557ce874 https://git.kernel.org/stable/c/0081032082b5b45ca902b3c3d6986cb5cca69ff2 https://git.kernel.org/stable/c/c52f9e1a9eb40f13993142c331a6cfd334d4b91d https://git.kernel.org/stable/c/2c111413f38ca5cf87557cab89f6d82b0e3433e7 https://git.kernel.org/stable/c/f63df70b439bb8331358a306541893bf4 •
CVSS: 5.5EPSS: 0%CPEs: 8EXPL: 0CVE-2024-42301 – dev/parport: fix the array out-of-bounds risk
https://notcve.org/view.php?id=CVE-2024-42301
In the Linux kernel, the following vulnerability has been resolved: dev/parport: fix the array out-of-bounds risk Fixed array out-of-bounds issues caused by sprintf by replacing it with snprintf for safer data copying, ensuring the destination buffer is not overflowed. Below is the stack trace I encountered during the actual issue: [ 66.575408s] [pid:5118,cpu4,QThread,4]Kernel panic - not syncing: stack-protector: Kernel stack is corrupted in: do_hardware_base_addr+0xcc/0xd0 [parport] [ 66.575408s] [pid:5118,cpu4,QThread,5]CPU: 4 PID: 5118 Comm: QThread Tainted: G S W O 5.10.97-arm64-desktop #7100.57021.2 [ 66.575439s] [pid:5118,cpu4,QThread,6]TGID: 5087 Comm: EFileApp [ 66.575439s] [pid:5118,cpu4,QThread,7]Hardware name: HUAWEI HUAWEI QingYun PGUX-W515x-B081/SP1PANGUXM, BIOS 1.00.07 04/29/2024 [ 66.575439s] [pid:5118,cpu4,QThread,8]Call trace: [ 66.575469s] [pid:5118,cpu4,QThread,9] dump_backtrace+0x0/0x1c0 [ 66.575469s] [pid:5118,cpu4,QThread,0] show_stack+0x14/0x20 [ 66.575469s] [pid:5118,cpu4,QThread,1] dump_stack+0xd4/0x10c [ 66.575500s] [pid:5118,cpu4,QThread,2] panic+0x1d8/0x3bc [ 66.575500s] [pid:5118,cpu4,QThread,3] __stack_chk_fail+0x2c/0x38 [ 66.575500s] [pid:5118,cpu4,QThread,4] do_hardware_base_addr+0xcc/0xd0 [parport] • https://git.kernel.org/stable/c/166a0bddcc27de41fe13f861c8348e8e53e988c8 https://git.kernel.org/stable/c/47b3dce100778001cd76f7e9188944b5cb27a76d https://git.kernel.org/stable/c/a44f88f7576bc1916d8d6293f5c62fbe7cbe03e0 https://git.kernel.org/stable/c/c719b393374d3763e64900ee19aaed767d5a08d6 https://git.kernel.org/stable/c/7f4da759092a1a6ce35fb085182d02de8cc4cc84 https://git.kernel.org/stable/c/b579ea3516c371ecf59d073772bc45dfd28c8a0e https://git.kernel.org/stable/c/7789a1d6792af410aa9b39a1eb237ed24fa2170a https://git.kernel.org/stable/c/ab11dac93d2d568d151b1918d7b84c2d0 •
CVSS: -EPSS: 0%CPEs: 8EXPL: 0CVE-2024-42297 – f2fs: fix to don't dirty inode for readonly filesystem
https://notcve.org/view.php?id=CVE-2024-42297
In the Linux kernel, the following vulnerability has been resolved: f2fs: fix to don't dirty inode for readonly filesystem syzbot reports f2fs bug as below: kernel BUG at fs/f2fs/inode.c:933! RIP: 0010:f2fs_evict_inode+0x1576/0x1590 fs/f2fs/inode.c:933 Call Trace: evict+0x2a4/0x620 fs/inode.c:664 dispose_list fs/inode.c:697 [inline] evict_inodes+0x5f8/0x690 fs/inode.c:747 generic_shutdown_super+0x9d/0x2c0 fs/super.c:675 kill_block_super+0x44/0x90 fs/super.c:1667 kill_f2fs_super+0x303/0x3b0 fs/f2fs/super.c:4894 deactivate_locked_super+0xc1/0x130 fs/super.c:484 cleanup_mnt+0x426/0x4c0 fs/namespace.c:1256 task_work_run+0x24a/0x300 kernel/task_work.c:180 ptrace_notify+0x2cd/0x380 kernel/signal.c:2399 ptrace_report_syscall include/linux/ptrace.h:411 [inline] ptrace_report_syscall_exit include/linux/ptrace.h:473 [inline] syscall_exit_work kernel/entry/common.c:251 [inline] syscall_exit_to_user_mode_prepare kernel/entry/common.c:278 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline] syscall_exit_to_user_mode+0x15c/0x280 kernel/entry/common.c:296 do_syscall_64+0x50/0x110 arch/x86/entry/common.c:88 entry_SYSCALL_64_after_hwframe+0x63/0x6b The root cause is: - do_sys_open - f2fs_lookup - __f2fs_find_entry - f2fs_i_depth_write - f2fs_mark_inode_dirty_sync - f2fs_dirty_inode - set_inode_flag(inode, FI_DIRTY_INODE) - umount - kill_f2fs_super - kill_block_super - generic_shutdown_super - sync_filesystem : sb is readonly, skip sync_filesystem() - evict_inodes - iput - f2fs_evict_inode - f2fs_bug_on(sbi, is_inode_flag_set(inode, FI_DIRTY_INODE)) : trigger kernel panic When we try to repair i_current_depth in readonly filesystem, let's skip dirty inode to avoid panic in later f2fs_evict_inode(). • https://git.kernel.org/stable/c/2d2916516577f2239b3377d9e8d12da5e6ccdfcf https://git.kernel.org/stable/c/54162974aea37a8cae00742470a78c7f6bd6f915 https://git.kernel.org/stable/c/54bc4e88447e385c4d4ffa85d93e0dce628fcfa6 https://git.kernel.org/stable/c/ec56571b4b146a1cfbedab49d5fcaf19fe8bf4f1 https://git.kernel.org/stable/c/9ce8135accf103f7333af472709125878704fdd4 https://git.kernel.org/stable/c/e62ff092a42f4a1bae3b310cf46673b4f3aac3b5 https://git.kernel.org/stable/c/2434344559f6743efb3ac15d11af9a0db9543bd3 https://git.kernel.org/stable/c/192b8fb8d1c8ca3c87366ebbef599fa80 •
CVSS: -EPSS: 0%CPEs: 5EXPL: 0CVE-2024-42296 – f2fs: fix return value of f2fs_convert_inline_inode()
https://notcve.org/view.php?id=CVE-2024-42296
In the Linux kernel, the following vulnerability has been resolved: f2fs: fix return value of f2fs_convert_inline_inode() If device is readonly, make f2fs_convert_inline_inode() return EROFS instead of zero, otherwise it may trigger panic during writeback of inline inode's dirty page as below: f2fs_write_single_data_page+0xbb6/0x1e90 fs/f2fs/data.c:2888 f2fs_write_cache_pages fs/f2fs/data.c:3187 [inline] __f2fs_write_data_pages fs/f2fs/data.c:3342 [inline] f2fs_write_data_pages+0x1efe/0x3a90 fs/f2fs/data.c:3369 do_writepages+0x359/0x870 mm/page-writeback.c:2634 filemap_fdatawrite_wbc+0x125/0x180 mm/filemap.c:397 __filemap_fdatawrite_range mm/filemap.c:430 [inline] file_write_and_wait_range+0x1aa/0x290 mm/filemap.c:788 f2fs_do_sync_file+0x68a/0x1ae0 fs/f2fs/file.c:276 generic_write_sync include/linux/fs.h:2806 [inline] f2fs_file_write_iter+0x7bd/0x24e0 fs/f2fs/file.c:4977 call_write_iter include/linux/fs.h:2114 [inline] new_sync_write fs/read_write.c:497 [inline] vfs_write+0xa72/0xc90 fs/read_write.c:590 ksys_write+0x1a0/0x2c0 fs/read_write.c:643 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f • https://git.kernel.org/stable/c/70f5ef5f33c333cfb286116fa3af74ac9bc84f1b https://git.kernel.org/stable/c/47a8ddcdcaccd9b891db4574795e46a33a121ac2 https://git.kernel.org/stable/c/077f0e24b27c4b44841593c7edbd1993be9eecb5 https://git.kernel.org/stable/c/1e7725814361c8c008d131db195cef8274ff26b8 https://git.kernel.org/stable/c/a8eb3de28e7a365690c61161e7a07a4fc7c60bbf •