CVE-2026-72231

batman-adv: tt: avoid request storms during pending request

State: Published
Severity: 7.5 High
Published: Aug 15, 2026
Updated: Oct 16, 2026
Reserved: Aug 9, 2026

Description

In the Linux kernel, the following vulnerability has been resolved:

batman-adv: tt: avoid request storms during pending request

batadv_send_tt_request() allocates a tt_req_node when none exists for the destination originator node. This should prevent that a multiple TT requests are send at the same time to an originator.

But if allocation of the send buffer failed, this request must be cleaned up again. But indicator for such a failure is "ret == false". But the actual implementation is checking for "ret == true".

The check must be inverted to not loose the information about the TT request directly after it was attempted to be sent out. This should avoid potential request storms.

Scores

CVSS	Score	Vector	Source
3.1	7.5 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	Linux

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	335fbe0f5d2501b7dd815806aef6fd9bad784eb1 to before 6055695ea40c64a47e00742c12c99b1a33b4daedAffected 335fbe0f5d2501b7dd815806aef6fd9bad784eb1 to before 21c44a6895f41df811d1c91d10eea194dda2b345Affected 335fbe0f5d2501b7dd815806aef6fd9bad784eb1 to before 5e46c76d9a5062212c4c5f642a5549fd9c057f8aAffected 335fbe0f5d2501b7dd815806aef6fd9bad784eb1 to before 067e413eec2e63c2996909ef55214b3a0eda0be7Affected 335fbe0f5d2501b7dd815806aef6fd9bad784eb1 to before 716f434eb35869e130424331584a91fbb729b9bdAffected 335fbe0f5d2501b7dd815806aef6fd9bad784eb1 to before 6a65ac8a81e903bb4b555c1d13532f5cb0167a4aAffected 335fbe0f5d2501b7dd815806aef6fd9bad784eb1 to before aba1cf21954e64c36afb966b754adad2b0b8aa48Affected 335fbe0f5d2501b7dd815806aef6fd9bad784eb1 to before 27c7d40008231ae4140d35501b60087a9de2d2c3Affected
LinuxLinux	3.13Affected before 3.13Not affected 5.10.261 through 5.10.Not affected 5.15.212 through 5.15.Not affected 6.1.178 through 6.1.Not affected 6.6.145 through 6.6.Not affected 6.12.97 through 6.12.Not affected 6.18.40 through 6.18.Not affected 7.1.5 through 7.1.*Not affected 7.2 and laterNot affected

Product

Versions

LinuxLinux

335fbe0f5d2501b7dd815806aef6fd9bad784eb1 to before 6055695ea40c64a47e00742c12c99b1a33b4daedAffected
335fbe0f5d2501b7dd815806aef6fd9bad784eb1 to before 21c44a6895f41df811d1c91d10eea194dda2b345Affected
335fbe0f5d2501b7dd815806aef6fd9bad784eb1 to before 5e46c76d9a5062212c4c5f642a5549fd9c057f8aAffected
335fbe0f5d2501b7dd815806aef6fd9bad784eb1 to before 067e413eec2e63c2996909ef55214b3a0eda0be7Affected
335fbe0f5d2501b7dd815806aef6fd9bad784eb1 to before 716f434eb35869e130424331584a91fbb729b9bdAffected
335fbe0f5d2501b7dd815806aef6fd9bad784eb1 to before 6a65ac8a81e903bb4b555c1d13532f5cb0167a4aAffected
335fbe0f5d2501b7dd815806aef6fd9bad784eb1 to before aba1cf21954e64c36afb966b754adad2b0b8aa48Affected
335fbe0f5d2501b7dd815806aef6fd9bad784eb1 to before 27c7d40008231ae4140d35501b60087a9de2d2c3Affected

LinuxLinux

3.13Affected
before 3.13Not affected
5.10.261 through 5.10.*Not affected
5.15.212 through 5.15.*Not affected
6.1.178 through 6.1.*Not affected
6.6.145 through 6.6.*Not affected
6.12.97 through 6.12.*Not affected
6.18.40 through 6.18.*Not affected
7.1.5 through 7.1.*Not affected
7.2 and laterNot affected

References

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