Strix
56.9K

CVE-2026-72231

HIGHCVSS 7.5/10EPSS 0.21%

Last modified

CVE-2026-72231 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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. EPSS estimates a 0.21% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1
7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability
0.21%

11.6th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 335fbe0f5d2501b7dd815806aef6fd9bad784eb1, < 6055695ea40c64a47e00742c12c99b1a33b4daed; >= 335fbe0f5d2501b7dd815806aef6fd9bad784eb1, < 21c44a6895f41df811d1c91d10eea194dda2b345; >= 335fbe0f5d2501b7dd815806aef6fd9bad784eb1, < 5e46c76d9a5062212c4c5f642a5549fd9c057f8a; >= 335fbe0f5d2501b7dd815806aef6fd9bad784eb1, < 067e413eec2e63c2996909ef55214b3a0eda0be7; >= 335fbe0f5d2501b7dd815806aef6fd9bad784eb1, < 716f434eb35869e130424331584a91fbb729b9bd; >= 335fbe0f5d2501b7dd815806aef6fd9bad784eb1, < 6a65ac8a81e903bb4b555c1d13532f5cb0167a4a; >= 335fbe0f5d2501b7dd815806aef6fd9bad784eb1, < aba1cf21954e64c36afb966b754adad2b0b8aa48; >= 335fbe0f5d2501b7dd815806aef6fd9bad784eb1, < 27c7d40008231ae4140d35501b60087a9de2d2c3
LinuxLinux3.13

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-72231?
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.
How severe is CVE-2026-72231?
CVE-2026-72231 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.21% probability of exploitation in the next 30 days.
How do I fix CVE-2026-72231?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

How Strix Helps

Related CVEs from 2026

View all 2026CVEs →

Are you affected by CVE-2026-72231?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST