CVE-2024-26871— f2fs: fix NULL pointer dereference in f2fs_submit_page_write()
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I. Basic Information for CVE-2024-26871
Vulnerability Information
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Vulnerability Title
f2fs: fix NULL pointer dereference in f2fs_submit_page_write()
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: f2fs: fix NULL pointer dereference in f2fs_submit_page_write() BUG: kernel NULL pointer dereference, address: 0000000000000014 RIP: 0010:f2fs_submit_page_write+0x6cf/0x780 [f2fs] Call Trace: <TASK> ? show_regs+0x6e/0x80 ? __die+0x29/0x70 ? page_fault_oops+0x154/0x4a0 ? prb_read_valid+0x20/0x30 ? __irq_work_queue_local+0x39/0xd0 ? irq_work_queue+0x36/0x70 ? do_user_addr_fault+0x314/0x6c0 ? exc_page_fault+0x7d/0x190 ? asm_exc_page_fault+0x2b/0x30 ? f2fs_submit_page_write+0x6cf/0x780 [f2fs] ? f2fs_submit_page_write+0x736/0x780 [f2fs] do_write_page+0x50/0x170 [f2fs] f2fs_outplace_write_data+0x61/0xb0 [f2fs] f2fs_do_write_data_page+0x3f8/0x660 [f2fs] f2fs_write_single_data_page+0x5bb/0x7a0 [f2fs] f2fs_write_cache_pages+0x3da/0xbe0 [f2fs] ... It is possible that other threads have added this fio to io->bio and submitted the io->bio before entering f2fs_submit_page_write(). At this point io->bio = NULL. If is_end_zone_blkaddr(sbi, fio->new_blkaddr) of this fio is true, then an NULL pointer dereference error occurs at bio_get(io->bio). The original code for determining zone end was after "out:", which would have missed some fio who is zone end. I've moved this code before "skip:" to make sure it's done for each fio.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于空指针取消引用。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2024-26871
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Same Patch Batch · Linux · 2024-04-17 · 100 CVEs total
| CVE-2024-26884 | bpf: Fix hashtab overflow check on 32-bit arches | |
| CVE-2024-26878 | quota: Fix potential NULL pointer dereference | |
| CVE-2024-26874 | drm/mediatek: Fix a null pointer crash in mtk_drm_crtc_finish_page_flip | |
| CVE-2024-26873 | scsi: hisi_sas: Fix a deadlock issue related to automatic dump | |
| CVE-2024-26872 | RDMA/srpt: Do not register event handler until srpt device is fully setup | |
| CVE-2024-26870 | NFSv4.2: fix nfs4_listxattr kernel BUG at mm/usercopy.c:102 | |
| CVE-2024-26869 | f2fs: fix to truncate meta inode pages forcely | |
| CVE-2024-26875 | media: pvrusb2: fix uaf in pvr2_context_set_notify | |
| CVE-2024-26882 | net: ip_tunnel: make sure to pull inner header in ip_tunnel_rcv() | |
| CVE-2024-26883 | bpf: Fix stackmap overflow check on 32-bit arches | |
| CVE-2024-26881 | net: hns3: fix kernel crash when 1588 is received on HIP08 devices | |
| CVE-2024-26885 | bpf: Fix DEVMAP_HASH overflow check on 32-bit arches | |
| CVE-2024-26886 | Bluetooth: af_bluetooth: Fix deadlock | |
| CVE-2024-26887 | Bluetooth: btusb: Fix memory leak | |
| CVE-2024-26888 | Bluetooth: msft: Fix memory leak | |
| CVE-2024-26889 | Bluetooth: hci_core: Fix possible buffer overflow | |
| CVE-2024-26890 | Bluetooth: btrtl: fix out of bounds memory access | |
| CVE-2024-26891 | iommu/vt-d: Don't issue ATS Invalidation request when device is disconnected | |
| CVE-2024-26892 | wifi: mt76: mt7921e: fix use-after-free in free_irq() | |
| CVE-2024-26893 | firmware: arm_scmi: Fix double free in SMC transport cleanup path |
Showing top 20 of 100 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-43500
rxrpc: Also unshare DATA/RESPONSE packets when paged frags a - CVE-2026-43475
scsi: storvsc: Fix scheduling while atomic on PREEMPT_RT - CVE-2026-43474
fs: init flags_valid before calling vfs_fileattr_get - CVE-2026-43473
scsi: mpi3mr: Add NULL checks when resetting request and rep - CVE-2026-43472
unshare: fix unshare_fs() handling
Same vendor: Linux
- CVE-2026-43500
rxrpc: Also unshare DATA/RESPONSE packets when paged frags a - CVE-2026-43475
scsi: storvsc: Fix scheduling while atomic on PREEMPT_RT - CVE-2026-43474
fs: init flags_valid before calling vfs_fileattr_get - CVE-2026-43473
scsi: mpi3mr: Add NULL checks when resetting request and rep - CVE-2026-43472
unshare: fix unshare_fs() handling
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