CVE-2026-31618— fbdev: tdfxfb: avoid divide-by-zero on FBIOPUT_VSCREENINFO
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I. Basic Information for CVE-2026-31618
Vulnerability Information
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Vulnerability Title
fbdev: tdfxfb: avoid divide-by-zero on FBIOPUT_VSCREENINFO
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: fbdev: tdfxfb: avoid divide-by-zero on FBIOPUT_VSCREENINFO Much like commit 19f953e74356 ("fbdev: fb_pm2fb: Avoid potential divide by zero error"), we also need to prevent that same crash from happening in the udlfb driver as it uses pixclock directly when dividing, which will crash.
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tdfxfb中pixclock除零错误。
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-2026-31618
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Same Patch Batch · Linux · 2026-04-24 · 138 CVEs total
| CVE-2026-31649 | 9.8 CRITICAL | net: stmmac: fix integer underflow in chain mode |
| CVE-2026-31607 | 9.8 CRITICAL | usbip: validate number_of_packets in usbip_pack_ret_submit() |
| CVE-2026-31608 | 9.8 CRITICAL | smb: server: avoid double-free in smb_direct_free_sendmsg after smb_direct_flush_send_list |
| CVE-2026-31633 | 9.8 CRITICAL | rxrpc: Fix integer overflow in rxgk_verify_response() |
| CVE-2026-31536 | 9.8 CRITICAL | smb: server: let send_done handle a completion without IB_SEND_SIGNALED |
| CVE-2026-31669 | 9.8 CRITICAL | mptcp: fix slab-use-after-free in __inet_lookup_established |
| CVE-2026-31668 | 9.8 CRITICAL | seg6: separate dst_cache for input and output paths in seg6 lwtunnel |
| CVE-2026-31589 | 9.8 CRITICAL | mm: call ->free_folio() directly in folio_unmap_invalidate() |
| CVE-2026-31609 | 9.8 CRITICAL | smb: client: avoid double-free in smbd_free_send_io() after smbd_send_batch_flush() |
| CVE-2026-31657 | 9.8 CRITICAL | batman-adv: hold claim backbone gateways by reference |
| CVE-2026-31659 | 9.8 CRITICAL | batman-adv: reject oversized global TT response buffers |
| CVE-2026-31637 | 9.8 CRITICAL | rxrpc: reject undecryptable rxkad response tickets |
| CVE-2026-31636 | 9.1 CRITICAL | rxrpc: fix RESPONSE authenticator parser OOB read |
| CVE-2026-31570 | 8.8 HIGH | can: gw: fix OOB heap access in cgw_csum_crc8_rel() |
| CVE-2026-31558 | 8.8 HIGH | LoongArch: KVM: Make kvm_get_vcpu_by_cpuid() more robust |
| CVE-2026-31553 | 8.8 HIGH | KVM: arm64: Fix the descriptor address in __kvm_at_swap_desc() |
| CVE-2026-31629 | 8.8 HIGH | nfc: llcp: add missing return after LLCP_CLOSED checks |
| CVE-2026-31622 | 8.8 HIGH | NFC: digital: Bounds check NFC-A cascade depth in SDD response handler |
| CVE-2026-31588 | 8.8 HIGH | KVM: x86: Use scratch field in MMIO fragment to hold small write values |
| CVE-2026-31611 | 8.6 HIGH | ksmbd: require 3 sub-authorities before reading sub_auth[2] |
Showing top 20 of 138 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
V. Comments for CVE-2026-31618
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