Linux Kernel up to 7.2-rc2 batman-adv batadv_interface_tx out-of-bounds

CVSS Meta Temp Score
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CTI Interest Score
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4.0$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic was found in Linux Kernel up to 7.2-rc2. This affects the function batadv_interface_tx of the component batman-adv. The manipulation results in out-of-bounds. This vulnerability is cataloged as CVE-2026-72232. The attack must be initiated from a local position. There is no exploit available.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Linux Kernel up to 7.2-rc2. Affected is the function batadv_interface_tx of the component batman-adv. The manipulation with an unknown input leads to a out-of-bounds vulnerability. CWE is classifying the issue as CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: batman-adv: ensure minimal ethernet header on TX As documented in commit 8bd67ebb50c0 ("net: bridge: xmit: make sure we have at least eth header len bytes"), it is possible by for a local user with eBPF TC hook access to attach a tc filter which truncates the packet and redirects to an batadv interface. But the code assumes that at least ETH_HLEN bytes are available and thus might read outside of the available buffer. The batadv_interface_tx() must therefore always check itself if enough data is available for the ethernet header and don't rely on min_header_len.

The advisory is shared for download at git.kernel.org. This vulnerability is traded as CVE-2026-72232 since 08/09/2026. The exploitability is told to be easy. The attack needs to be approached locally. Additional levels of successful authentication are needed for exploitation. There are known technical details, but no exploit is available.

Upgrading to version 5.10.261, 5.15.212, 6.1.178, 6.6.145, 6.12.97, 6.18.40, 7.1.5 or 7.2-rc3 eliminates this vulnerability. Applying the patch 58799078afebd5115e052bf69ad6697f9759dd6f/38cd10b0aeec755d89f78722a2b83f4088ff0cb0/811fea37620f2097955d95ce81cfdba03fd30f1b/e6640923afee619d9fa82b07394dc9498e202304/6b4f521e01257387906f8b969ad3450d8208d4e2/9e16b6751a8206de0b865d99bb02771e6751d12d/dbeb4145d9778f922f459935da9a027750765a69/49df66b7993c80b80c7eb9a84ba5b3410c8296a0 is able to eliminate this problem.

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Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.2
VulDB Meta Temp Score: 4.0

VulDB Base Score: 4.2
VulDB Temp Score: 4.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 5.10.261/5.15.212/6.1.178/6.6.145/6.12.97/6.18.40/7.1.5/7.2-rc3
Patch: 58799078afebd5115e052bf69ad6697f9759dd6f/38cd10b0aeec755d89f78722a2b83f4088ff0cb0/811fea37620f2097955d95ce81cfdba03fd30f1b/e6640923afee619d9fa82b07394dc9498e202304/6b4f521e01257387906f8b969ad3450d8208d4e2/9e16b6751a8206de0b865d99bb02771e6751d12d/dbeb4145d9778f922f459935da9a027750765a69/49df66b7993c80b80c7eb9a84ba5b3410c8296a0

Timelineinfo

08/09/2026 CVE reserved
08/15/2026 +6 days Advisory disclosed
08/15/2026 +0 days VulDB entry created
08/15/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-72232 (🔒)
GCVE (CVE): GCVE-0-2026-72232
GCVE (VulDB): GCVE-100-390684

Entryinfo

Created: 08/15/2026 13:59
Changes: 08/15/2026 13:59 (59)
Complete: 🔍
Cache ID: 216::103

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