batman-adv: dat: avoid unaligned fault in IP extraction
Key facts
- Attack vector
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- Privileges required
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- User interaction
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- Attack complexity
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- Impact type
- —
- Confidentiality · integrity · availability
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- Fix status
- Fixed
No CVSS vector from any source. Fix status from CNA.
Summary
In the Linux kernel, the following vulnerability has been resolved: batman-adv: dat: avoid unaligned fault in IP extraction Independent of the alignment of the ARP packet in the SKB, either the batadv_arp_ip_src or the batadv_arp_ip_dst will have an unaligned access (on HW without native unaligned read support). Use get_unaligned() to handle this properly on all architectures.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
Remediation
- Fix · CNA Linux (Linux) Fixed in 5.10.270, 5.15.221, 6.1.188, 6.6.157, 6.12.110, 6.18.51, 7.2.5, 7.3
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
Not affected: 7 products
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
- Red Hat OpenShift Container Platform 4
- Red Hat OpenShift Container Platform 5
Timeline
- 2026-10-02 Threatist record created from CVE-2026-89949
- 2026-10-03 Alias added: GHSA-95x9-5832-jchc
- 2026-10-19 Fix available: Linux/[email protected] · CNA
- 2026-11-06 Affected versions changed · Red Hat
- 2026-11-06 CVSS score added · Red Hat
References
Other 8
- https://git.kernel.org/stable/c/b1bbc694ca51adb8dbed3f3235b4fcbdb44e0e20
- https://git.kernel.org/stable/c/15dbfb37f0e1a085d48deeb8f5238e9d28127dde
- https://git.kernel.org/stable/c/a170d4617e8cca05a1314de61728a262ef272782
- https://git.kernel.org/stable/c/c74a4acf41d19f21199dec2d6c813c90d31cd02c
- https://git.kernel.org/stable/c/91c99b4e152023c7d458a5dedd52d2b0d7df4ce3
- https://git.kernel.org/stable/c/1cfa7d5f70d54cb8c7e82df739430782d1996ee1
- https://git.kernel.org/stable/c/0c2df865338bbf92aa45b9253e5f9b8ef2d9992f
- https://git.kernel.org/stable/c/0121afa52cdb88cfb4d5d7bd126a23a9100121d8
More Linux vulnerabilities
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- TI-2026-38352 netfilter: bridge: make ebt_snat ARP rewrite writable KEVCVSS 3.1HIGH 8.8
- TI-2021-02452 Incorrect authorization in Ubuntu linux kernel KEVCVSS 3.1HIGH 8.8
- TI-2013-05264 The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the… KEVCVSS 3.1HIGH 8.8
- TI-2022-00125 Integer overflow in kernel KEVCVSS 3.1HIGH 8.4
- TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
Sources
- CVE-2026-89949 · CVE Program
- CVE-2026-89949 · NVD
- FIRST EPSS
- GHSA-95x9-5832-jchc · GitHub Advisory Database · CC BY 4.0
- CVE-2026-89949 · Red Hat security data · CC BY 4.0
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