{"id":"CVE-2026-63835","state":"PUBLISHED","title":"batman-adv: v: prevent OGM aggregation on disabled hardif","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nbatman-adv: v: prevent OGM aggregation on disabled hardif\n\nWhen an interface gets disabled, the worker is correctly disabled by\nbatadv_hardif_disable_interface() -> ... -> batadv_v_ogm_iface_disable().\nIn this process, the skb aggr_list is also freed.\n\nBut batadv_v_ogm_send_meshif() can still queue new skbs (via\nbatadv_v_ogm_queue_on_if()) to the aggr_list. This will only stop after all\ncores can no longer find the RCU protected list of hard interfaces. These\nqueued skbs will never be freed or consumed by batadv_v_ogm_aggr_work.\n\nThe batadv_v_ogm_iface_disable() function must block\nbatadv_v_ogm_queue_on_if() to avoid leak of skbs.","publishedAt":"2026-07-19T12:02:26.574Z","updatedAt":"2026-08-17T04:51:45.552Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"f89255a02f1d75d8e1b9d1c31435fcb64840cb2a","status":"affected","lessThan":"d462ced79dd430200cf888984e8005da77fc810b","versionType":"git"},{"version":"f89255a02f1d75d8e1b9d1c31435fcb64840cb2a","status":"affected","lessThan":"f79deaaf822ab0ee2424cf28781f9ab91576bea3","versionType":"git"},{"version":"f89255a02f1d75d8e1b9d1c31435fcb64840cb2a","status":"affected","lessThan":"d3569327fc7395b2b0461a0a0cb77a0bb74786c0","versionType":"git"},{"version":"f89255a02f1d75d8e1b9d1c31435fcb64840cb2a","status":"affected","lessThan":"97644fdaaf6446ffbe182c5eb804fceb5b1a51b7","versionType":"git"},{"version":"f89255a02f1d75d8e1b9d1c31435fcb64840cb2a","status":"affected","lessThan":"f04dde74399431fb07abbdd9cd5d0ed624771d04","versionType":"git"},{"version":"f89255a02f1d75d8e1b9d1c31435fcb64840cb2a","status":"affected","lessThan":"3d4548c96d6f21ac1a9b06c5f82f3ef439c87023","versionType":"git"},{"version":"f89255a02f1d75d8e1b9d1c31435fcb64840cb2a","status":"affected","lessThan":"86ab6b6fb5b82163bf6c45780bb72150021d7349","versionType":"git"},{"version":"f89255a02f1d75d8e1b9d1c31435fcb64840cb2a","status":"affected","lessThan":"d11c00b95b2a3b3934007fc003dccc6fdcc061ad","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/batman-adv/bat_v.c","net/batman-adv/bat_v_ogm.c","net/batman-adv/types.h"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.4","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.4","versionType":"semver"},{"version":"5.10.260","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.211","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.177","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.144","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.95","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.38","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.3","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","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/bat_v.c","net/batman-adv/bat_v_ogm.c","net/batman-adv/types.h"]}],"references":["https://git.kernel.org/stable/c/d462ced79dd430200cf888984e8005da77fc810b","https://git.kernel.org/stable/c/f79deaaf822ab0ee2424cf28781f9ab91576bea3","https://git.kernel.org/stable/c/d3569327fc7395b2b0461a0a0cb77a0bb74786c0","https://git.kernel.org/stable/c/97644fdaaf6446ffbe182c5eb804fceb5b1a51b7","https://git.kernel.org/stable/c/f04dde74399431fb07abbdd9cd5d0ed624771d04","https://git.kernel.org/stable/c/3d4548c96d6f21ac1a9b06c5f82f3ef439c87023","https://git.kernel.org/stable/c/86ab6b6fb5b82163bf6c45780bb72150021d7349","https://git.kernel.org/stable/c/d11c00b95b2a3b3934007fc003dccc6fdcc061ad"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:41.951Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/63xxx/CVE-2026-63835.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-63835","state":"PUBLISHED","datePublished":"2026-07-19T12:02:26.574Z","dateUpdated":"2026-08-17T04:51:45.552Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-07-19T07:54:57.015Z"},"containers":{"cna":{"title":"batman-adv: v: prevent OGM aggregation on disabled hardif","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nbatman-adv: v: prevent OGM aggregation on disabled hardif\n\nWhen an interface gets disabled, the worker is correctly disabled by\nbatadv_hardif_disable_interface() -> ... -> batadv_v_ogm_iface_disable().\nIn this process, the skb aggr_list is also freed.\n\nBut batadv_v_ogm_send_meshif() can still queue new skbs (via\nbatadv_v_ogm_queue_on_if()) to the aggr_list. This will only stop after all\ncores can no longer find the RCU protected list of hard interfaces. These\nqueued skbs will never be freed or consumed by batadv_v_ogm_aggr_work.\n\nThe batadv_v_ogm_iface_disable() function must block\nbatadv_v_ogm_queue_on_if() to avoid leak of skbs."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"f89255a02f1d75d8e1b9d1c31435fcb64840cb2a","status":"affected","lessThan":"d462ced79dd430200cf888984e8005da77fc810b","versionType":"git"},{"version":"f89255a02f1d75d8e1b9d1c31435fcb64840cb2a","status":"affected","lessThan":"f79deaaf822ab0ee2424cf28781f9ab91576bea3","versionType":"git"},{"version":"f89255a02f1d75d8e1b9d1c31435fcb64840cb2a","status":"affected","lessThan":"d3569327fc7395b2b0461a0a0cb77a0bb74786c0","versionType":"git"},{"version":"f89255a02f1d75d8e1b9d1c31435fcb64840cb2a","status":"affected","lessThan":"97644fdaaf6446ffbe182c5eb804fceb5b1a51b7","versionType":"git"},{"version":"f89255a02f1d75d8e1b9d1c31435fcb64840cb2a","status":"affected","lessThan":"f04dde74399431fb07abbdd9cd5d0ed624771d04","versionType":"git"},{"version":"f89255a02f1d75d8e1b9d1c31435fcb64840cb2a","status":"affected","lessThan":"3d4548c96d6f21ac1a9b06c5f82f3ef439c87023","versionType":"git"},{"version":"f89255a02f1d75d8e1b9d1c31435fcb64840cb2a","status":"affected","lessThan":"86ab6b6fb5b82163bf6c45780bb72150021d7349","versionType":"git"},{"version":"f89255a02f1d75d8e1b9d1c31435fcb64840cb2a","status":"affected","lessThan":"d11c00b95b2a3b3934007fc003dccc6fdcc061ad","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/batman-adv/bat_v.c","net/batman-adv/bat_v_ogm.c","net/batman-adv/types.h"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.4","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.4","versionType":"semver"},{"version":"5.10.260","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.211","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.177","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.144","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.95","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.38","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.3","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","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/bat_v.c","net/batman-adv/bat_v_ogm.c","net/batman-adv/types.h"]}],"references":[{"url":"https://git.kernel.org/stable/c/d462ced79dd430200cf888984e8005da77fc810b"},{"url":"https://git.kernel.org/stable/c/f79deaaf822ab0ee2424cf28781f9ab91576bea3"},{"url":"https://git.kernel.org/stable/c/d3569327fc7395b2b0461a0a0cb77a0bb74786c0"},{"url":"https://git.kernel.org/stable/c/97644fdaaf6446ffbe182c5eb804fceb5b1a51b7"},{"url":"https://git.kernel.org/stable/c/f04dde74399431fb07abbdd9cd5d0ed624771d04"},{"url":"https://git.kernel.org/stable/c/3d4548c96d6f21ac1a9b06c5f82f3ef439c87023"},{"url":"https://git.kernel.org/stable/c/86ab6b6fb5b82163bf6c45780bb72150021d7349"},{"url":"https://git.kernel.org/stable/c/d11c00b95b2a3b3934007fc003dccc6fdcc061ad"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-08-17T04:51:45.552Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.4","versionEndExcluding":"5.10.260"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.4","versionEndExcluding":"5.15.211"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.4","versionEndExcluding":"6.1.177"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.4","versionEndExcluding":"6.6.144"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.4","versionEndExcluding":"6.12.95"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.4","versionEndExcluding":"6.18.38"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.4","versionEndExcluding":"7.1.3"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.4","versionEndExcluding":"7.2"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}