net: stmmac: Correctly handle Rx checksum offload errors (Linux Linux)

CVE-2025-40337
HIGH 8.2

At a glance

Source
NVD
EPSS
EPSS 0.48 % · percentile 41 ()
State
PUBLISHED
Published
Updated
Assigner
Linux
NVD status
Deferred

Description

In the Linux kernel, the following vulnerability has been resolved: net: stmmac: Correctly handle Rx checksum offload errors The stmmac_rx function would previously set skb->ip_summed to CHECKSUM_UNNECESSARY if hardware checksum offload (CoE) was enabled and the packet was of a known IP ethertype. However, this logic failed to check if the hardware had actually reported a checksum error. The hardware status, indicating a header or payload checksum failure, was being ignored at this stage. This could cause corrupt packets to be passed up the network stack as valid. This patch corrects the logic by checking the `csum_none` status flag, which is set when the hardware reports a checksum error. If this flag is set, skb->ip_summed is now correctly set to CHECKSUM_NONE, ensuring the kernel's network stack will perform its own validation and properly handle the corrupt packet.

References

Scores

VersionScoreVectorScored by
CVSS 3.1HIGH 8.2CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:LLinux
CVSS 3.1HIGH 8.2CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:LNVD · 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Secondary)

European references

CERT-FR advisories

Affected products

ProductVersions
Linux · Linuxaffected 3c20f72f9108b2fcf30ec63d8a4203736c01ccd0 < 3c5e5fccc4138c072d99be4ebe6b16df6a70a40c ; affected 3c20f72f9108b2fcf30ec63d8a4203736c01ccd0 < 63fbe0e6413279d5ea5842e2423e351ded547683 ; affected 3c20f72f9108b2fcf30ec63d8a4203736c01ccd0 < 719fcdf29051f7471d5d433475af76219019d33d ; affected 3c20f72f9108b2fcf30ec63d8a4203736c01ccd0 < 1aa319e0f12d2d761a31556b82a5852c98eb0bea ; affected 3c20f72f9108b2fcf30ec63d8a4203736c01ccd0 < ee0aace5f844ef59335148875d05bec8764e71e8
Linux · Linuxaffected 3.2 ; unaffected 0 < 3.2 ; unaffected 6.1.191 ≤ 6.1.* ; unaffected 6.6.117 ≤ 6.6.* ; unaffected 6.12.58 ≤ 6.12.* ; unaffected 6.17.8 ≤ 6.17.*

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD