{"id":"CVE-2026-72235","title":"batman-adv: retrieve ethhdr after potential skb realloc on RX","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nbatman-adv: retrieve ethhdr after potential skb realloc on RX\n\npskb_may_pull() in batadv_interface_rx() could reallocate the buffer behind\nthe skb. Variables which were…","severity":"high","cvss":8.8,"cvssVector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cvssSource":"cna","vendor":"Linux","product":"Linux","affected":["Linux >= c6c8fea29769d998d94fcec9b9f14d4b52b349d3 < 6e189f14d1ea28db212b9d70a02131a7ce518012","Linux >= c6c8fea29769d998d94fcec9b9f14d4b52b349d3 < a1820344b180cb55af748f102bc536b5c93164db","Linux >= c6c8fea29769d998d94fcec9b9f14d4b52b349d3 < 6abf73589bed3f27ee240c08108feb72bed0b9c6","Linux >= c6c8fea29769d998d94fcec9b9f14d4b52b349d3 < f19259395b44af67f3c274e34237c295b526b859","Linux >= c6c8fea29769d998d94fcec9b9f14d4b52b349d3 < 2cefa5141cab8ec1e4b24cf585958b13f2e3049d","Linux >= c6c8fea29769d998d94fcec9b9f14d4b52b349d3 < 85a71a81854e0e191ad0e533eabb4eff54866feb","Linux >= c6c8fea29769d998d94fcec9b9f14d4b52b349d3 < b031fc97e1993d29d6c3a0e86a99140528cf31e8","Linux >= c6c8fea29769d998d94fcec9b9f14d4b52b349d3 < 035e1fed892d3d06002a73ff73668f618a514644","Linux 2.6.38"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-10-16T18:44:43.790792Z"},"published":"2026-08-15","updated":"2026-10-16","sourceUpdated":"2026-10-16T18:45:04.206Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-72235","references":[{"url":"https://git.kernel.org/stable/c/6e189f14d1ea28db212b9d70a02131a7ce518012"},{"url":"https://git.kernel.org/stable/c/a1820344b180cb55af748f102bc536b5c93164db"},{"url":"https://git.kernel.org/stable/c/6abf73589bed3f27ee240c08108feb72bed0b9c6"},{"url":"https://git.kernel.org/stable/c/f19259395b44af67f3c274e34237c295b526b859"},{"url":"https://git.kernel.org/stable/c/2cefa5141cab8ec1e4b24cf585958b13f2e3049d"},{"url":"https://git.kernel.org/stable/c/85a71a81854e0e191ad0e533eabb4eff54866feb"},{"url":"https://git.kernel.org/stable/c/b031fc97e1993d29d6c3a0e86a99140528cf31e8"},{"url":"https://git.kernel.org/stable/c/035e1fed892d3d06002a73ff73668f618a514644"}],"tags":["cve.org"],"epss":0.00344,"epssPercentile":0.26351,"ingestedAt":"2026-10-16T19:46:24.420Z","slug":"CVE-2026-72235","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nbatman-adv: retrieve ethhdr after potential skb realloc on RX\n\npskb_may_pull() in batadv_interface_rx() could reallocate the buffer behind\nthe skb. Variables which were pointing to the old buffer need to be\nreassigned to avoid an use-after-free.\n\nThis was done correctly for the VLAN header but missed for the ethernet\nheader which is later used for the TT and AP isolation handling.\n\n## Affected\n\n- `Linux >= c6c8fea29769d998d94fcec9b9f14d4b52b349d3 < 6e189f14d1ea28db212b9d70a02131a7ce518012`\n- `Linux >= c6c8fea29769d998d94fcec9b9f14d4b52b349d3 < a1820344b180cb55af748f102bc536b5c93164db`\n- `Linux >= c6c8fea29769d998d94fcec9b9f14d4b52b349d3 < 6abf73589bed3f27ee240c08108feb72bed0b9c6`\n- `Linux >= c6c8fea29769d998d94fcec9b9f14d4b52b349d3 < f19259395b44af67f3c274e34237c295b526b859`\n- `Linux >= c6c8fea29769d998d94fcec9b9f14d4b52b349d3 < 2cefa5141cab8ec1e4b24cf585958b13f2e3049d`\n- `Linux >= c6c8fea29769d998d94fcec9b9f14d4b52b349d3 < 85a71a81854e0e191ad0e533eabb4eff54866feb`\n- `Linux >= c6c8fea29769d998d94fcec9b9f14d4b52b349d3 < b031fc97e1993d29d6c3a0e86a99140528cf31e8`\n- `Linux >= c6c8fea29769d998d94fcec9b9f14d4b52b349d3 < 035e1fed892d3d06002a73ff73668f618a514644`\n- `Linux 2.6.38`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":48,"depthScoreParts":{"impact":48.4,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}