7.5

CVE-2026-72231: batman-adv: tt: avoid request storms during pending request

Received
AliasesUBUNTU-CVE-2026-72231DEBIAN-CVE-2026-72231
Published 15-08-2026Last modified 16-10-2026

Vulnerability summary

CVE-2026-72231 is a high (CVSS 7.5) vulnerability in linux. EPSS estimates a 0.68% chance of exploitation in the next 30 days, higher than 52.4% of scored vulnerabilities.

Priority
Prioritisesevere

Severe, CVSS 7.5 (CVE.org); no exploitation reported by the 5 checked sources; EPSS 1% (FIRST, 05-11-2026)

Source freshness unavailable

How is this decided?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
0.68%
0%100%
Low · -0.04 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 17 · Related 17
SUSE-SU-2026:5091-1USN-8875-1USN-8875-2USN-8876-1USN-8877-1USN-8878-1

Timeline

  1. 15-08-2026
    PublishedVulnerability first disclosed.
  2. 16-10-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.68%

Chance of exploitation in the next 30 days

Percentile

52%

Versus all other CVEs

30-day change

Decrease -0.04 pp

From 0.72% on 06-10-2026

06-10-202605-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu169 products
  • linuxAll versions (No fix recorded) | < 5.15.0-198.208 | < 6.8.0-147.147 | < 7.0.0-38.38
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.15.0-1117.124 | < 6.8.0-1067.70 | < 7.0.0-1014.14
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian1 product
  • linux< 6.1.180-1 | < 6.12.100-1 | < 7.1.5-1
Linux1 product
  • linux≥ 335fbe0f5d2501b7dd815806aef6fd9bad784eb1, < 6055695ea40c64a47e00742c12c99b1a33b4daed | ≥ 335fbe0f5d2501b7dd815806aef6fd9bad784eb1, < 21c44a6895f41df811d1c91d10eea194dda2b345 | ≥ 335fbe0f5d2501b7dd815806aef6fd9bad784eb1, < 5e46c76d9a5062212c4c5f642a5549fd9c057f8a | ≥ 335fbe0f5d2501b7dd815806aef6fd9bad784eb1, < 067e413eec2e63c2996909ef55214b3a0eda0be7 | ≥ 335fbe0f5d2501b7dd815806aef6fd9bad784eb1, < 716f434eb35869e130424331584a91fbb729b9bd | ≥ 335fbe0f5d2501b7dd815806aef6fd9bad784eb1, < 6a65ac8a81e903bb4b555c1d13532f5cb0167a4a | ≥ 335fbe0f5d2501b7dd815806aef6fd9bad784eb1, < aba1cf21954e64c36afb966b754adad2b0b8aa48 | ≥ 335fbe0f5d2501b7dd815806aef6fd9bad784eb1, < 27c7d40008231ae4140d35501b60087a9de2d2c3 | 3.13

3 vendors · 171 products

References

28 links
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