CVE-2026-72231

Summary

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux335fbe0f5d2501b7dd815806aef6fd9bad784eb1 < 6055695ea40c64a47e00742c12c99b1a33b4daedaffected
LinuxLinux335fbe0f5d2501b7dd815806aef6fd9bad784eb1 < 21c44a6895f41df811d1c91d10eea194dda2b345affected
LinuxLinux335fbe0f5d2501b7dd815806aef6fd9bad784eb1 < 5e46c76d9a5062212c4c5f642a5549fd9c057f8aaffected
LinuxLinux335fbe0f5d2501b7dd815806aef6fd9bad784eb1 < 067e413eec2e63c2996909ef55214b3a0eda0be7affected
LinuxLinux335fbe0f5d2501b7dd815806aef6fd9bad784eb1 < 716f434eb35869e130424331584a91fbb729b9bdaffected
LinuxLinux335fbe0f5d2501b7dd815806aef6fd9bad784eb1 < 6a65ac8a81e903bb4b555c1d13532f5cb0167a4aaffected
LinuxLinux335fbe0f5d2501b7dd815806aef6fd9bad784eb1 < aba1cf21954e64c36afb966b754adad2b0b8aa48affected
LinuxLinux335fbe0f5d2501b7dd815806aef6fd9bad784eb1 < 27c7d40008231ae4140d35501b60087a9de2d2c3affected
LinuxLinux3.13affected
LinuxLinux0 < 3.13unaffected
LinuxLinux5.10.261 <= 5.10.*unaffected
LinuxLinux5.15.212 <= 5.15.*unaffected
LinuxLinux6.1.178 <= 6.1.*unaffected
LinuxLinux6.6.145 <= 6.6.*unaffected
LinuxLinux6.12.97 <= 6.12.*unaffected
LinuxLinux6.18.40 <= 6.18.*unaffected
LinuxLinux7.1.5 <= 7.1.*unaffected
LinuxLinux7.2 <= *unaffected

Weaknesses

References