{"id":"CVE-2026-72231","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nbatman-adv: tt: avoid request storms during pending request\n\nbatadv_send_tt_request() allocates a tt_req_node when none exists for the\ndestination originator node","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nbatman-adv: tt: avoid request storms during pending request\n\nbatadv_send_tt_request() allocates a tt_req_node when none exists for the\ndestination originator node. This…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-772"],"vendor":"Red Hat","product":"Linux","affected":["Linux >= 335fbe0f5d2501b7dd815806aef6fd9bad784eb1 < 6055695ea40c64a47e00742c12c99b1a33b4daed","Linux >= 335fbe0f5d2501b7dd815806aef6fd9bad784eb1 < 21c44a6895f41df811d1c91d10eea194dda2b345","Linux >= 335fbe0f5d2501b7dd815806aef6fd9bad784eb1 < 5e46c76d9a5062212c4c5f642a5549fd9c057f8a","Linux >= 335fbe0f5d2501b7dd815806aef6fd9bad784eb1 < 067e413eec2e63c2996909ef55214b3a0eda0be7","Linux >= 335fbe0f5d2501b7dd815806aef6fd9bad784eb1 < 716f434eb35869e130424331584a91fbb729b9bd","Linux >= 335fbe0f5d2501b7dd815806aef6fd9bad784eb1 < 6a65ac8a81e903bb4b555c1d13532f5cb0167a4a","Linux >= 335fbe0f5d2501b7dd815806aef6fd9bad784eb1 < aba1cf21954e64c36afb966b754adad2b0b8aa48","Linux >= 335fbe0f5d2501b7dd815806aef6fd9bad784eb1 < 27c7d40008231ae4140d35501b60087a9de2d2c3","Linux 3.13"],"published":"2026-08-15","updated":"2026-10-16","sourceUpdated":"2026-10-16T19:17:15.353","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-72231","references":[{"url":"https://git.kernel.org/stable/c/067e413eec2e63c2996909ef55214b3a0eda0be7","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/21c44a6895f41df811d1c91d10eea194dda2b345","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/27c7d40008231ae4140d35501b60087a9de2d2c3","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/5e46c76d9a5062212c4c5f642a5549fd9c057f8a","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/6055695ea40c64a47e00742c12c99b1a33b4daed","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/6a65ac8a81e903bb4b555c1d13532f5cb0167a4a","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/716f434eb35869e130424331584a91fbb729b9bd","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/aba1cf21954e64c36afb966b754adad2b0b8aa48","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-72231.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-72231"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2516403"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-72231"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-72231"},{"url":"https://lore.kernel.org/linux-cve-announce/2026081549-CVE-2026-72231-bfeb@gregkh/T"}],"tags":["nvd","csaf","vex","red-hat","cve.org","score-dispute"],"epss":0.00677,"epssPercentile":0.52095,"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2026-10-16T18:44:21.954834Z"},"scores":{"nvd":7.5,"vendor":5.5,"cna":7.5},"ingestedAt":"2026-10-16T19:46:24.419Z","slug":"CVE-2026-72231","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nbatman-adv: tt: avoid request storms during pending request\n\nbatadv_send_tt_request() allocates a tt_req_node when none exists for the\ndestination originator node. This should prevent that a multiple TT\nrequests are send at the same time to an originator.\n\nBut if allocation of the send buffer failed, this request must be cleaned\nup again. But indicator for such a failure is \"ret == false\". But the\nactual implementation is checking for \"ret == true\".\n\nThe check must be inverted to not loose the information about the TT\nrequest directly after it was attempted to be sent out. This should avoid\npotential request storms.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · updated 2026-10-16 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-72231.json)","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[{"seq":230270,"id":"CVE-2026-72231","ts":1793130913450,"field":"cvss","old":"5.5","new":"7.5"},{"seq":230269,"id":"CVE-2026-72231","ts":1793130913450,"field":"severity","old":"medium","new":"high"},{"seq":223647,"id":"CVE-2026-72231","ts":1792238346623,"field":"cvss","old":"7.5","new":"5.5"},{"seq":223646,"id":"CVE-2026-72231","ts":1792238346623,"field":"severity","old":"high","new":"medium"}]}