CVE-2025-21890 — Incorrect Calculation in Linux

CWE-682 — Incorrect Calculation39 documents6 sources
Severity
5.5MEDIUMNVD
OSV4.7
EPSS
0.0%
top 84.95%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
LinuxLinux KernelDebian Linux
Timeline
PublishedMar 27
Latest updateOct 15

Description

In the Linux kernel, the following vulnerability has been resolved: idpf: fix checksums set in idpf_rx_rsc() idpf_rx_rsc() uses skb_transport_offset(skb) while the transport header is not set yet. This triggers the following warning for CONFIG_DEBUG_NET=y builds. DEBUG_NET_WARN_ON_ONCE(!skb_transport_header_was_set(skb)) [ 69.261620] WARNING: CPU: 7 PID: 0 at ./include/linux/skbuff.h:3020 idpf_vport_splitq_napi_poll (include/linux/skbuff.h:3020) idpf [ 69.261629] Modules linked in: vfat fat…

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitability: 1.8 | Impact: 3.6

Affected Packages5 packages

▶NVDlinux/linux_kernel6.7 — 6.12.18+2
▶Debianlinux/linux_kernel< 6.12.19-1+1
▶Ubuntulinux/linux_kernel< 6.8.0-84.84
▶CVEListV5linux/linux3a8845af66edb340ba9210bb8a0da040c7d6e590 — 4279bbebe00ffdbfd1a77567961886e35465cbdc+3
▶debiandebian/linux< linux 6.12.19-1 (forky)

Patches

Patch: git.kernel.org ↗Patch: git.kernel.org ↗Patch: git.kernel.org ↗

🔴Vulnerability Details

19
OSV
linux-oracle-6.8 vulnerabilities↗2025-10-15
▶
OSV
linux-azure-nvidia vulnerabilities↗2025-10-08
▶
OSV
linux-oracle vulnerabilities↗2025-10-06
▶
OSV
linux-azure, linux-azure-6.8 vulnerabilities↗2025-10-02
▶
OSV
linux-raspi-realtime vulnerabilities↗2025-10-02
▶

📋Vendor Advisories

19
Ubuntu
Linux kernel (Oracle) vulnerabilities↗2025-10-15
▶
Ubuntu
Linux kernel (Azure, N-Series) vulnerabilities↗2025-10-08
▶
Ubuntu
Linux kernel (Oracle) vulnerabilities↗2025-10-06
▶
Ubuntu
Linux kernel (Raspberry Pi Real-time) vulnerabilities↗2025-10-02
▶
Ubuntu
Linux kernel (HWE) vulnerabilities↗2025-10-02
▶
CVE-2025-21890 — Incorrect Calculation in Linux | cvebase