CVE-2026-98030

highpriority · track · 0EPSS 0.001 · 2 %ileDEFR
grimoire priorityP2 · Scheduled
Exploitable?
—
no known exploitation
Likely / severe?
0.12% (2nd) EPSS
CVSS 7 · high
Is it mine?
8 products
Check your exposure
Who says so?
2 sources
cert_bund · certfr

EPSS · scored 2026-10-26

In the Linux kernel, the following vulnerability has been resolved: net: dsa: bcm_sf2: bound the CFP rule dump by the caller's buffer size bcm_sf2_cfp_rule_get_all() walks the whole cfp.unique bitmap into rule_locs[] without consulting nfc->rule_cnt, which is how many entries the caller had room for. ETHTOOL_GRXCLSRLALL requires no CAP_NET_ADMIN and the ioctl sizes the buffer from the rule_cnt userspace passes in, so once an admin has installed CFP rules any user can ask for fewer slots than there are rules and run off the end of the allocation. A rule_cnt of 0 leaves the buffer pointer NULL and the walk dereferences it.

01

cvss

Technical severity, 0–10. One row per scoring source.

7.0
010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.4–7

v3.17highCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondaryexploitability 1 · impact 5.9
v3.16.4mediumCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)
02

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-125USLLM-inferredCWE-787USLLM-inferred
03

affected products (8)

Products and version ranges known to be affected.

04

advisories (5)

Vendor and ecosystem advisories describing this.

05

sources

Which sources assert this record, and when.

cert_bundcertfrNVDCVE.orgMITRE
published 2026-09-25modified 2026-10-19
06

references (8) nvd

External citations — patches, advisories, analysis.

scry

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