CVE-2026-89949

batman-adv: dat: avoid unaligned fault in IP extraction

State: Published
Severity: Not scored
Published: Sep 16, 2026
Updated: Oct 19, 2026
Reserved: Sep 11, 2026

Description

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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	5c3a0e5535933349a5d6e6bc8b704e0611f21d3f to before b1bbc694ca51adb8dbed3f3235b4fcbdb44e0e20Affected 5c3a0e5535933349a5d6e6bc8b704e0611f21d3f to before 15dbfb37f0e1a085d48deeb8f5238e9d28127ddeAffected 5c3a0e5535933349a5d6e6bc8b704e0611f21d3f to before a170d4617e8cca05a1314de61728a262ef272782Affected 5c3a0e5535933349a5d6e6bc8b704e0611f21d3f to before c74a4acf41d19f21199dec2d6c813c90d31cd02cAffected 5c3a0e5535933349a5d6e6bc8b704e0611f21d3f to before 91c99b4e152023c7d458a5dedd52d2b0d7df4ce3Affected 5c3a0e5535933349a5d6e6bc8b704e0611f21d3f to before 1cfa7d5f70d54cb8c7e82df739430782d1996ee1Affected 5c3a0e5535933349a5d6e6bc8b704e0611f21d3f to before 0c2df865338bbf92aa45b9253e5f9b8ef2d9992fAffected 5c3a0e5535933349a5d6e6bc8b704e0611f21d3f to before 0121afa52cdb88cfb4d5d7bd126a23a9100121d8Affected
LinuxLinux	3.8Affected before 3.8Not affected 5.10.270 through 5.10.Not affected 5.15.221 through 5.15.Not affected 6.1.188 through 6.1.Not affected 6.6.157 through 6.6.Not affected 6.12.110 through 6.12.Not affected 6.18.51 through 6.18.Not affected 7.2.5 through 7.2.*Not affected 7.3 and laterNot affected

Product

Versions

LinuxLinux

5c3a0e5535933349a5d6e6bc8b704e0611f21d3f to before b1bbc694ca51adb8dbed3f3235b4fcbdb44e0e20Affected
5c3a0e5535933349a5d6e6bc8b704e0611f21d3f to before 15dbfb37f0e1a085d48deeb8f5238e9d28127ddeAffected
5c3a0e5535933349a5d6e6bc8b704e0611f21d3f to before a170d4617e8cca05a1314de61728a262ef272782Affected
5c3a0e5535933349a5d6e6bc8b704e0611f21d3f to before c74a4acf41d19f21199dec2d6c813c90d31cd02cAffected
5c3a0e5535933349a5d6e6bc8b704e0611f21d3f to before 91c99b4e152023c7d458a5dedd52d2b0d7df4ce3Affected
5c3a0e5535933349a5d6e6bc8b704e0611f21d3f to before 1cfa7d5f70d54cb8c7e82df739430782d1996ee1Affected
5c3a0e5535933349a5d6e6bc8b704e0611f21d3f to before 0c2df865338bbf92aa45b9253e5f9b8ef2d9992fAffected
5c3a0e5535933349a5d6e6bc8b704e0611f21d3f to before 0121afa52cdb88cfb4d5d7bd126a23a9100121d8Affected

LinuxLinux

3.8Affected
before 3.8Not affected
5.10.270 through 5.10.*Not affected
5.15.221 through 5.15.*Not affected
6.1.188 through 6.1.*Not affected
6.6.157 through 6.6.*Not affected
6.12.110 through 6.12.*Not affected
6.18.51 through 6.18.*Not affected
7.2.5 through 7.2.*Not affected
7.3 and laterNot affected

References

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