{"id":"CVE-2026-52926","state":"PUBLISHED","title":"batman-adv: clear current gateway during teardown","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nbatman-adv: clear current gateway during teardown\n\nbatadv_gw_node_free() removes the gateway list entries during mesh teardown,\nbut it does not clear the currently selected gateway. This leaves stale\ngateway state behind across cleanup and can break a later mesh recreation.\n\nClear bat_priv->gw.curr_gw before walking the gateway list so the selected\ngateway reference is dropped as part of teardown.","publishedAt":"2026-06-24T07:14:20.057Z","updatedAt":"2026-06-24T07:14:20.057Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"2265c141086474bbae55a5bb3afa1ebb78ccaa7c","status":"affected","lessThan":"a3f3f1ec8aad84c5dd386c430b9c61cddd85b18f","versionType":"git"},{"version":"2265c141086474bbae55a5bb3afa1ebb78ccaa7c","status":"affected","lessThan":"e2ec4c712d19141ca7bf7fbbb1d842f73abaa186","versionType":"git"},{"version":"2265c141086474bbae55a5bb3afa1ebb78ccaa7c","status":"affected","lessThan":"9a1a8ed4facfe843bde6fdfcf7af0e9923eb2e17","versionType":"git"},{"version":"2265c141086474bbae55a5bb3afa1ebb78ccaa7c","status":"affected","lessThan":"6de089b545db013433cf934bb4e4433dec2dd65f","versionType":"git"},{"version":"2265c141086474bbae55a5bb3afa1ebb78ccaa7c","status":"affected","lessThan":"30bda3ef4b0cac777f1a7c314cd08b8ff6437365","versionType":"git"},{"version":"2265c141086474bbae55a5bb3afa1ebb78ccaa7c","status":"affected","lessThan":"ae7aeb0ce3c0ebbe357ed525779acac197a18086","versionType":"git"},{"version":"2265c141086474bbae55a5bb3afa1ebb78ccaa7c","status":"affected","lessThan":"17e3a441111cd1a530cd6ee69a22f3161d80d810","versionType":"git"},{"version":"2265c141086474bbae55a5bb3afa1ebb78ccaa7c","status":"affected","lessThan":"a340a51ed801eab7bb454150c226323b865263cc","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/batman-adv/gateway_client.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.1","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.1","versionType":"semver"},{"version":"5.10.258","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.209","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.175","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.142","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.92","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.34","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.11","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/batman-adv/gateway_client.c"]}],"references":["https://git.kernel.org/stable/c/a3f3f1ec8aad84c5dd386c430b9c61cddd85b18f","https://git.kernel.org/stable/c/e2ec4c712d19141ca7bf7fbbb1d842f73abaa186","https://git.kernel.org/stable/c/9a1a8ed4facfe843bde6fdfcf7af0e9923eb2e17","https://git.kernel.org/stable/c/6de089b545db013433cf934bb4e4433dec2dd65f","https://git.kernel.org/stable/c/30bda3ef4b0cac777f1a7c314cd08b8ff6437365","https://git.kernel.org/stable/c/ae7aeb0ce3c0ebbe357ed525779acac197a18086","https://git.kernel.org/stable/c/17e3a441111cd1a530cd6ee69a22f3161d80d810","https://git.kernel.org/stable/c/a340a51ed801eab7bb454150c226323b865263cc"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:16.098Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/52xxx/CVE-2026-52926.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-52926","state":"PUBLISHED","datePublished":"2026-06-24T07:14:20.057Z","dateUpdated":"2026-06-24T07:14:20.057Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-06-09T07:44:35.368Z"},"containers":{"cna":{"title":"batman-adv: clear current gateway during teardown","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nbatman-adv: clear current gateway during teardown\n\nbatadv_gw_node_free() removes the gateway list entries during mesh teardown,\nbut it does not clear the currently selected gateway. This leaves stale\ngateway state behind across cleanup and can break a later mesh recreation.\n\nClear bat_priv->gw.curr_gw before walking the gateway list so the selected\ngateway reference is dropped as part of teardown."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"2265c141086474bbae55a5bb3afa1ebb78ccaa7c","status":"affected","lessThan":"a3f3f1ec8aad84c5dd386c430b9c61cddd85b18f","versionType":"git"},{"version":"2265c141086474bbae55a5bb3afa1ebb78ccaa7c","status":"affected","lessThan":"e2ec4c712d19141ca7bf7fbbb1d842f73abaa186","versionType":"git"},{"version":"2265c141086474bbae55a5bb3afa1ebb78ccaa7c","status":"affected","lessThan":"9a1a8ed4facfe843bde6fdfcf7af0e9923eb2e17","versionType":"git"},{"version":"2265c141086474bbae55a5bb3afa1ebb78ccaa7c","status":"affected","lessThan":"6de089b545db013433cf934bb4e4433dec2dd65f","versionType":"git"},{"version":"2265c141086474bbae55a5bb3afa1ebb78ccaa7c","status":"affected","lessThan":"30bda3ef4b0cac777f1a7c314cd08b8ff6437365","versionType":"git"},{"version":"2265c141086474bbae55a5bb3afa1ebb78ccaa7c","status":"affected","lessThan":"ae7aeb0ce3c0ebbe357ed525779acac197a18086","versionType":"git"},{"version":"2265c141086474bbae55a5bb3afa1ebb78ccaa7c","status":"affected","lessThan":"17e3a441111cd1a530cd6ee69a22f3161d80d810","versionType":"git"},{"version":"2265c141086474bbae55a5bb3afa1ebb78ccaa7c","status":"affected","lessThan":"a340a51ed801eab7bb454150c226323b865263cc","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/batman-adv/gateway_client.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.1","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.1","versionType":"semver"},{"version":"5.10.258","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.209","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.175","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.142","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.92","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.34","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.11","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/batman-adv/gateway_client.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/a3f3f1ec8aad84c5dd386c430b9c61cddd85b18f"},{"url":"https://git.kernel.org/stable/c/e2ec4c712d19141ca7bf7fbbb1d842f73abaa186"},{"url":"https://git.kernel.org/stable/c/9a1a8ed4facfe843bde6fdfcf7af0e9923eb2e17"},{"url":"https://git.kernel.org/stable/c/6de089b545db013433cf934bb4e4433dec2dd65f"},{"url":"https://git.kernel.org/stable/c/30bda3ef4b0cac777f1a7c314cd08b8ff6437365"},{"url":"https://git.kernel.org/stable/c/ae7aeb0ce3c0ebbe357ed525779acac197a18086"},{"url":"https://git.kernel.org/stable/c/17e3a441111cd1a530cd6ee69a22f3161d80d810"},{"url":"https://git.kernel.org/stable/c/a340a51ed801eab7bb454150c226323b865263cc"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-06-24T07:14:20.057Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.1","versionEndExcluding":"5.10.258"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.1","versionEndExcluding":"5.15.209"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.1","versionEndExcluding":"6.1.175"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.1","versionEndExcluding":"6.6.142"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.1","versionEndExcluding":"6.12.92"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.1","versionEndExcluding":"6.18.34"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.1","versionEndExcluding":"7.0.11"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.1","versionEndExcluding":"7.1"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}