CVSS: -EPSS: 0%CPEs: 5EXPL: 0CVE-2022-48944 – sched: Fix yet more sched_fork() races
https://notcve.org/view.php?id=CVE-2022-48944
In the Linux kernel, the following vulnerability has been resolved: sched: Fix yet more sched_fork() races Where commit 4ef0c5c6b5ba ("kernel/sched: Fix sched_fork() access an invalid sched_task_group") fixed a fork race vs cgroup, it opened up a race vs syscalls by not placing the task on the runqueue before it gets exposed through the pidhash. Commit 13765de8148f ("sched/fair: Fix fault in reweight_entity") is trying to fix a single instance of this, instead fix the whole class of issues, effectively reverting this commit. • https://git.kernel.org/stable/c/3869eecf050416a1d19bac60926f6b5d64b0aa58 https://git.kernel.org/stable/c/4ef0c5c6b5ba1f38f0ea1cedad0cad722f00c14a https://git.kernel.org/stable/c/c85c6fadbef0a3eab41540ea628fa8fe8928c820 https://git.kernel.org/stable/c/25d40b828fb855ee62e1039c65a666c9afd60786 https://git.kernel.org/stable/c/3411613611a5cddf7e80908010dc87cb527dd13b https://git.kernel.org/stable/c/c65cfd89cef669d90c59f3bf150af6458137a04f https://git.kernel.org/stable/c/b1e8206582f9d680cff7d04828708c8b6ab32957 •
CVSS: -EPSS: 0%CPEs: 13EXPL: 0CVE-2024-44944 – netfilter: ctnetlink: use helper function to calculate expect ID
https://notcve.org/view.php?id=CVE-2024-44944
In the Linux kernel, the following vulnerability has been resolved: netfilter: ctnetlink: use helper function to calculate expect ID Delete expectation path is missing a call to the nf_expect_get_id() helper function to calculate the expectation ID, otherwise LSB of the expectation object address is leaked to userspace. • https://git.kernel.org/stable/c/7b115755fb9d3aff0ddcd18a5c4d83381362acce https://git.kernel.org/stable/c/3c79107631db1f7fd32cf3f7368e4672004a3010 https://git.kernel.org/stable/c/3d8b3d0384f709126beef6b917b7e97c23f18e74 https://git.kernel.org/stable/c/36bbd861a402a8c5bd8f0365a5967d34cc492f09 https://git.kernel.org/stable/c/1922476beeeea46bebbe577215078736dd4231dc https://git.kernel.org/stable/c/f862c13c3c926d3008b2c2bcc746ab813108dfbf https://git.kernel.org/stable/c/b0a90cae081d7ee14eaa46524fb70f4e23ae8905 https://git.kernel.org/stable/c/66e7650dbbb8e236e781c670b167edc81 •
CVSS: -EPSS: 0%CPEs: 3EXPL: 0CVE-2024-44942 – f2fs: fix to do sanity check on F2FS_INLINE_DATA flag in inode during GC
https://notcve.org/view.php?id=CVE-2024-44942
In the Linux kernel, the following vulnerability has been resolved: f2fs: fix to do sanity check on F2FS_INLINE_DATA flag in inode during GC syzbot reports a f2fs bug as below: ------------[ cut here ]------------ kernel BUG at fs/f2fs/inline.c:258! CPU: 1 PID: 34 Comm: kworker/u8:2 Not tainted 6.9.0-rc6-syzkaller-00012-g9e4bc4bcae01 #0 RIP: 0010:f2fs_write_inline_data+0x781/0x790 fs/f2fs/inline.c:258 Call Trace: f2fs_write_single_data_page+0xb65/0x1d60 fs/f2fs/data.c:2834 f2fs_write_cache_pages fs/f2fs/data.c:3133 [inline] __f2fs_write_data_pages fs/f2fs/data.c:3288 [inline] f2fs_write_data_pages+0x1efe/0x3a90 fs/f2fs/data.c:3315 do_writepages+0x35b/0x870 mm/page-writeback.c:2612 __writeback_single_inode+0x165/0x10b0 fs/fs-writeback.c:1650 writeback_sb_inodes+0x905/0x1260 fs/fs-writeback.c:1941 wb_writeback+0x457/0xce0 fs/fs-writeback.c:2117 wb_do_writeback fs/fs-writeback.c:2264 [inline] wb_workfn+0x410/0x1090 fs/fs-writeback.c:2304 process_one_work kernel/workqueue.c:3254 [inline] process_scheduled_works+0xa12/0x17c0 kernel/workqueue.c:3335 worker_thread+0x86d/0xd70 kernel/workqueue.c:3416 kthread+0x2f2/0x390 kernel/kthread.c:388 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 The root cause is: inline_data inode can be fuzzed, so that there may be valid blkaddr in its direct node, once f2fs triggers background GC to migrate the block, it will hit f2fs_bug_on() during dirty page writeback. Let's add sanity check on F2FS_INLINE_DATA flag in inode during GC, so that, it can forbid migrating inline_data inode's data block for fixing. • https://git.kernel.org/stable/c/ae00e6536a2dd54b64b39e9a39548870cf835745 https://git.kernel.org/stable/c/26c07775fb5dc74351d1c3a2bc3cdf609b03e49f https://git.kernel.org/stable/c/fc01008c92f40015aeeced94750855a7111b6929 •
CVSS: -EPSS: 0%CPEs: 3EXPL: 0CVE-2024-44941 – f2fs: fix to cover read extent cache access with lock
https://notcve.org/view.php?id=CVE-2024-44941
In the Linux kernel, the following vulnerability has been resolved: f2fs: fix to cover read extent cache access with lock syzbot reports a f2fs bug as below: BUG: KASAN: slab-use-after-free in sanity_check_extent_cache+0x370/0x410 fs/f2fs/extent_cache.c:46 Read of size 4 at addr ffff8880739ab220 by task syz-executor200/5097 CPU: 0 PID: 5097 Comm: syz-executor200 Not tainted 6.9.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114 print_address_description mm/kasan/report.c:377 [inline] print_report+0x169/0x550 mm/kasan/report.c:488 kasan_report+0x143/0x180 mm/kasan/report.c:601 sanity_check_extent_cache+0x370/0x410 fs/f2fs/extent_cache.c:46 do_read_inode fs/f2fs/inode.c:509 [inline] f2fs_iget+0x33e1/0x46e0 fs/f2fs/inode.c:560 f2fs_nfs_get_inode+0x74/0x100 fs/f2fs/super.c:3237 generic_fh_to_dentry+0x9f/0xf0 fs/libfs.c:1413 exportfs_decode_fh_raw+0x152/0x5f0 fs/exportfs/expfs.c:444 exportfs_decode_fh+0x3c/0x80 fs/exportfs/expfs.c:584 do_handle_to_path fs/fhandle.c:155 [inline] handle_to_path fs/fhandle.c:210 [inline] do_handle_open+0x495/0x650 fs/fhandle.c:226 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 We missed to cover sanity_check_extent_cache() w/ extent cache lock, so, below race case may happen, result in use after free issue. - f2fs_iget - do_read_inode - f2fs_init_read_extent_tree : add largest extent entry in to cache - shrink - f2fs_shrink_read_extent_tree - __shrink_extent_tree - __detach_extent_node : drop largest extent entry - sanity_check_extent_cache : access et->largest w/o lock let's refactor sanity_check_extent_cache() to avoid extent cache access and call it before f2fs_init_read_extent_tree() to fix this issue. • https://git.kernel.org/stable/c/263df78166d3a9609b97d28c34029bd01874cbb8 https://git.kernel.org/stable/c/323ef20b5558b9d9fd10c1224327af6f11a8177d https://git.kernel.org/stable/c/d7409b05a64f212735f0d33f5f1602051a886eab •
CVSS: -EPSS: 0%CPEs: 4EXPL: 0CVE-2024-44940 – fou: remove warn in gue_gro_receive on unsupported protocol
https://notcve.org/view.php?id=CVE-2024-44940
In the Linux kernel, the following vulnerability has been resolved: fou: remove warn in gue_gro_receive on unsupported protocol Drop the WARN_ON_ONCE inn gue_gro_receive if the encapsulated type is not known or does not have a GRO handler. Such a packet is easily constructed. Syzbot generates them and sets off this warning. Remove the warning as it is expected and not actionable. The warning was previously reduced from WARN_ON to WARN_ON_ONCE in commit 270136613bf7 ("fou: Do WARN_ON_ONCE in gue_gro_receive for bad proto callbacks"). • https://git.kernel.org/stable/c/5a2e37bc648a2503bf6d687aed27b9f4455d82eb https://git.kernel.org/stable/c/3db4395332e7050ef9ddeb3052e6b5019f2a2a59 https://git.kernel.org/stable/c/440ab7f97261bc28501636a13998e1b1946d2e79 https://git.kernel.org/stable/c/dd89a81d850fa9a65f67b4527c0e420d15bf836c •