01 Record

CVE-2026-98555

llc: fix skb UAF and leaks on llc_mac_hdr_init() failure

HighPUBLISHEDCNA: Linux

CNA base score7.5 CVSS v3.xCVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

View raw JSON

02 Description

llc: fix skb UAF and leaks on llc_mac_hdr_init() failure

03 Exploitation and scoring

Exploitation: Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision: Not assessed by CISA
EPSS probability: 0.31% probability of exploitation activity in the next 30 days.
EPSS percentile: Equal to or higher than the score of 23.5% of scored records. A rank, not a probability.
NVD base score: 7.5 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector: CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD analysis status: Received. NVD last modified this record on 2026-10-24.
Red Hat severity: Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2026-10-18 15:18Z10 DAYS AGO

Last updated

2026-10-24 14:09Z4 DAYS AGO

Reserved

2026-09-25

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 7.5)

CNA CVSS vector

CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Weaknesses

CWE-825Expired Pointer DereferenceBase

Data version

5.2

Document digest

ae5a478d292f3875a6845a80c9b47da0c1697a9464c3dbfed5f220c6213ca5a1

05 Affected products

VendorProductVersionsPlatforms

LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < fec0fe6838a7f45175667701fb51abb23a6ffb1e, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < b859ba18b5a1067f71db5618c6a4a70d55fa308b, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 8b855b645841b5a04e20339a22bb6d593c9b790d, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < d360b31f1a3666579422872aa7d1a751e20b76f9, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 060f827aa3dc47939ee306da715cd6700d129616, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 41dcae82bece9f106b4dff0ee777bba8d157c8a8, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < cb3528ad8bb46fa6252f5d14ced7febddc18515d, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 72f9dd522f8d6c5a00be9695c7bb74631eb5069e, 2.6.12—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/fec0fe6838a7f45175667701fb51abb23a6ffb1e
git.kernel.orghttps://git.kernel.org/stable/c/b859ba18b5a1067f71db5618c6a4a70d55fa308b
git.kernel.orghttps://git.kernel.org/stable/c/8b855b645841b5a04e20339a22bb6d593c9b790d
git.kernel.orghttps://git.kernel.org/stable/c/d360b31f1a3666579422872aa7d1a751e20b76f9
git.kernel.orghttps://git.kernel.org/stable/c/060f827aa3dc47939ee306da715cd6700d129616
git.kernel.orghttps://git.kernel.org/stable/c/41dcae82bece9f106b4dff0ee777bba8d157c8a8
git.kernel.orghttps://git.kernel.org/stable/c/cb3528ad8bb46fa6252f5d14ced7febddc18515d
git.kernel.orghttps://git.kernel.org/stable/c/72f9dd522f8d6c5a00be9695c7bb74631eb5069e

07 Fixed in

Debian 12

linux
Fixed in 6.1.190-1
linux-6.12
Fixed in 6.12.113-1~deb12u1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

linux
Fixed in 6.12.113-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

linux
Fixed in 7.2.9-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.