CVSS: -EPSS: 0%CPEs: 7EXPL: 0CVE-2024-47740 – f2fs: Require FMODE_WRITE for atomic write ioctls
https://notcve.org/view.php?id=CVE-2024-47740
In the Linux kernel, the following vulnerability has been resolved: f2fs: Require FMODE_WRITE for atomic write ioctls The F2FS ioctls for starting and committing atomic writes check for inode_owner_or_capable(), but this does not give LSMs like SELinux or Landlock an opportunity to deny the write access - if the caller's FSUID matches the inode's UID, inode_owner_or_capable() immediately returns true. There are scenarios where LSMs want to deny a process the ability to write particular files, even files that the FSUID of the process owns; but this can currently partially be bypassed using atomic write ioctls in two ways: - F2FS_IOC_START_ATOMIC_REPLACE + F2FS_IOC_COMMIT_ATOMIC_WRITE can truncate an inode to size 0 - F2FS_IOC_START_ATOMIC_WRITE + F2FS_IOC_ABORT_ATOMIC_WRITE can revert changes another process concurrently made to a file Fix it by requiring FMODE_WRITE for these operations, just like for F2FS_IOC_MOVE_RANGE. Since any legitimate caller should only be using these ioctls when intending to write into the file, that seems unlikely to break anything. • https://git.kernel.org/stable/c/88b88a66797159949cec32eaab12b4968f6fae2d https://git.kernel.org/stable/c/000bab8753ae29a259feb339b99ee759795a48ac https://git.kernel.org/stable/c/88ff021e1fea2d9b40b2d5efd9013c89f7be04ac https://git.kernel.org/stable/c/32f348ecc149e9ca70a1c424ae8fa9b6919d2713 https://git.kernel.org/stable/c/5e0de753bfe87768ebe6744d869caa92f35e5731 https://git.kernel.org/stable/c/f3bfac2cabf5333506b263bc0c8497c95302f32d https://git.kernel.org/stable/c/4583290898c13c2c2e5eb8773886d153c2c5121d https://git.kernel.org/stable/c/4f5a100f87f32cb65d4bb1ad282a08c92 •
CVSS: -EPSS: 0%CPEs: 7EXPL: 0CVE-2024-47739 – padata: use integer wrap around to prevent deadlock on seq_nr overflow
https://notcve.org/view.php?id=CVE-2024-47739
In the Linux kernel, the following vulnerability has been resolved: padata: use integer wrap around to prevent deadlock on seq_nr overflow When submitting more than 2^32 padata objects to padata_do_serial, the current sorting implementation incorrectly sorts padata objects with overflowed seq_nr, causing them to be placed before existing objects in the reorder list. This leads to a deadlock in the serialization process as padata_find_next cannot match padata->seq_nr and pd->processed because the padata instance with overflowed seq_nr will be selected next. To fix this, we use an unsigned integer wrap around to correctly sort padata objects in scenarios with integer overflow. • https://git.kernel.org/stable/c/bfde23ce200e6d33291d29b9b8b60cc2f30f0805 https://git.kernel.org/stable/c/46c4079460f4dcaf445860679558eedef4e1bc91 https://git.kernel.org/stable/c/72164d5b648951684b1a593996b37a6083c61d7d https://git.kernel.org/stable/c/ab205e1c3846326f162180e56825b4ba38ce9c30 https://git.kernel.org/stable/c/1b8cf11b3ca593a8802a51802cd0c28c38501428 https://git.kernel.org/stable/c/9e279e6c1f012b82628b89e1b9c65dbefa8ca25a https://git.kernel.org/stable/c/1bd712de96ad7167fe0d608e706cd60587579f16 https://git.kernel.org/stable/c/9a22b2812393d93d84358a760c347c219 •
CVSS: -EPSS: 0%CPEs: 7EXPL: 0CVE-2024-47737 – nfsd: call cache_put if xdr_reserve_space returns NULL
https://notcve.org/view.php?id=CVE-2024-47737
In the Linux kernel, the following vulnerability has been resolved: nfsd: call cache_put if xdr_reserve_space returns NULL If not enough buffer space available, but idmap_lookup has triggered lookup_fn which calls cache_get and returns successfully. Then we missed to call cache_put here which pairs with cache_get. Reviwed-by: Jeff Layton <jlayton@kernel.org> • https://git.kernel.org/stable/c/ddd1ea56367202f6c99135cd59de7a97af4c4ffd https://git.kernel.org/stable/c/9f03f0016ff797932551881c7e06ae50e9c39134 https://git.kernel.org/stable/c/9803ab882d565a8fb2dde5999d98866d1c499dfd https://git.kernel.org/stable/c/81821617312988096f5deccf0f7da6f888e98056 https://git.kernel.org/stable/c/a1afbbb5276f943ad7173d0b4c626b8c75a260da https://git.kernel.org/stable/c/e32ee6a61041925d1a05c14d10352dcfce9ef029 https://git.kernel.org/stable/c/8d0765f86135e27f0bb5c950c136495719b4c834 https://git.kernel.org/stable/c/d078cbf5c38de83bc31f83c47dcd2184c •
CVSS: -EPSS: 0%CPEs: 7EXPL: 0CVE-2024-47735 – RDMA/hns: Fix spin_unlock_irqrestore() called with IRQs enabled
https://notcve.org/view.php?id=CVE-2024-47735
In the Linux kernel, the following vulnerability has been resolved: RDMA/hns: Fix spin_unlock_irqrestore() called with IRQs enabled Fix missuse of spin_lock_irq()/spin_unlock_irq() when spin_lock_irqsave()/spin_lock_irqrestore() was hold. This was discovered through the lock debugging, and the corresponding log is as follows: raw_local_irq_restore() called with IRQs enabled WARNING: CPU: 96 PID: 2074 at kernel/locking/irqflag-debug.c:10 warn_bogus_irq_restore+0x30/0x40 ... Call trace: warn_bogus_irq_restore+0x30/0x40 _raw_spin_unlock_irqrestore+0x84/0xc8 add_qp_to_list+0x11c/0x148 [hns_roce_hw_v2] hns_roce_create_qp_common.constprop.0+0x240/0x780 [hns_roce_hw_v2] hns_roce_create_qp+0x98/0x160 [hns_roce_hw_v2] create_qp+0x138/0x258 ib_create_qp_kernel+0x50/0xe8 create_mad_qp+0xa8/0x128 ib_mad_port_open+0x218/0x448 ib_mad_init_device+0x70/0x1f8 add_client_context+0xfc/0x220 enable_device_and_get+0xd0/0x140 ib_register_device.part.0+0xf4/0x1c8 ib_register_device+0x34/0x50 hns_roce_register_device+0x174/0x3d0 [hns_roce_hw_v2] hns_roce_init+0xfc/0x2c0 [hns_roce_hw_v2] __hns_roce_hw_v2_init_instance+0x7c/0x1d0 [hns_roce_hw_v2] hns_roce_hw_v2_init_instance+0x9c/0x180 [hns_roce_hw_v2] • https://git.kernel.org/stable/c/9a4435375cd151e07c0c38fa601b00115986091b https://git.kernel.org/stable/c/07f0f643d7e570dbe8ef6f5c3367a43e3086a335 https://git.kernel.org/stable/c/29c0f546d3fd66238b42cf25bcd5f193bb1cf794 https://git.kernel.org/stable/c/425589d4af09c49574bd71ac31f811362a5126c3 https://git.kernel.org/stable/c/094a1821903f33fb91de4b71087773ee16aeb3a0 https://git.kernel.org/stable/c/2656336a84fcb6802f6e6c233f4661891deea24f https://git.kernel.org/stable/c/a1a3403bb1826c8ec787f0d60c3e7b54f419129e https://git.kernel.org/stable/c/74d315b5af180220d561684d158977301 •
CVSS: -EPSS: 0%CPEs: 5EXPL: 0CVE-2024-47728 – bpf: Zero former ARG_PTR_TO_{LONG,INT} args in case of error
https://notcve.org/view.php?id=CVE-2024-47728
In the Linux kernel, the following vulnerability has been resolved: bpf: Zero former ARG_PTR_TO_{LONG,INT} args in case of error For all non-tracing helpers which formerly had ARG_PTR_TO_{LONG,INT} as input arguments, zero the value for the case of an error as otherwise it could leak memory. For tracing, it is not needed given CAP_PERFMON can already read all kernel memory anyway hence bpf_get_func_arg() and bpf_get_func_ret() is skipped in here. Also, the MTU helpers mtu_len pointer value is being written but also read. Technically, the MEM_UNINIT should not be there in order to always force init. Removing MEM_UNINIT needs more verifier rework though: MEM_UNINIT right now implies two things actually: i) write into memory, ii) memory does not have to be initialized. If we lift MEM_UNINIT, it then becomes: i) read into memory, ii) memory must be initialized. This means that for bpf_*_check_mtu() we're readding the issue we're trying to fix, that is, it would then be able to write back into things like .rodata BPF maps. Follow-up work will rework the MEM_UNINIT semantics such that the intent can be better expressed. • https://git.kernel.org/stable/c/d7a4cb9b6705a89937d12c8158a35a3145dc967a https://git.kernel.org/stable/c/8397bf78988f3ae9dbebb0200189a62a57264980 https://git.kernel.org/stable/c/a634fa8e480ac2423f86311a602f6295df2c8ed0 https://git.kernel.org/stable/c/599d15b6d03356a97bff7a76155c5604c42a2962 https://git.kernel.org/stable/c/594a9f5a8d2de2573a856e506f77ba7dd2cefc6a https://git.kernel.org/stable/c/4b3786a6c5397dc220b1483d8e2f4867743e966f •