{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2025-39839", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-04-16T07:20:57.141Z", "datePublished": "2025-09-19T15:26:14.688Z", "dateUpdated": "2025-09-29T06:00:44.207Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-09-29T06:00:44.207Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbatman-adv: fix OOB read/write in network-coding decode\n\nbatadv_nc_skb_decode_packet() trusts coded_len and checks only against\nskb->len. XOR starts at sizeof(struct batadv_unicast_packet), reducing\npayload headroom, and the source skb length is not verified, allowing an\nout-of-bounds read and a small out-of-bounds write.\n\nValidate that coded_len fits within the payload area of both destination\nand source sk_buffs before XORing."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/batman-adv/network-coding.c"], "versions": [{"version": "2df5278b0267c799f3e877e8eeddbb6e93cda0bb", "lessThan": "30fc47248f02b8a14a61df469e1da4704be1a19f", "status": "affected", "versionType": "git"}, {"version": "2df5278b0267c799f3e877e8eeddbb6e93cda0bb", "lessThan": "1e36c6c8dc8023b4bbe9a16e819f9998b9b6a183", "status": "affected", "versionType": "git"}, {"version": "2df5278b0267c799f3e877e8eeddbb6e93cda0bb", "lessThan": "5d334bce9fad58cf328d8fa14ea1fff855819863", "status": "affected", "versionType": "git"}, {"version": "2df5278b0267c799f3e877e8eeddbb6e93cda0bb", "lessThan": "dce6c2aa70e94c04c523b375dfcc664d7a0a560a", "status": "affected", "versionType": "git"}, {"version": "2df5278b0267c799f3e877e8eeddbb6e93cda0bb", "lessThan": "bb37252c9af1cb250f34735ee98f80b46be3cef1", "status": "affected", "versionType": "git"}, {"version": "2df5278b0267c799f3e877e8eeddbb6e93cda0bb", "lessThan": "20080709457bc1e920eb002483d7d981d9b2ac1c", "status": "affected", "versionType": "git"}, {"version": "2df5278b0267c799f3e877e8eeddbb6e93cda0bb", "lessThan": "a67c6397fcb7e842d3c595243049940970541c48", "status": "affected", "versionType": "git"}, {"version": "2df5278b0267c799f3e877e8eeddbb6e93cda0bb", "lessThan": "d77b6ff0ce35a6d0b0b7b9581bc3f76d041d4087", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/batman-adv/network-coding.c"], "versions": [{"version": "3.10", "status": "affected"}, {"version": "0", "lessThan": "3.10", "status": "unaffected", "versionType": "semver"}, {"version": "5.4.299", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.243", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.192", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.151", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.105", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.46", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.16.6", "lessThanOrEqual": "6.16.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.17", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.10", "versionEndExcluding": "5.4.299"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.10", "versionEndExcluding": "5.10.243"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.10", "versionEndExcluding": "5.15.192"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.10", "versionEndExcluding": "6.1.151"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.10", "versionEndExcluding": "6.6.105"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.10", "versionEndExcluding": "6.12.46"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.10", "versionEndExcluding": "6.16.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.10", "versionEndExcluding": "6.17"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/30fc47248f02b8a14a61df469e1da4704be1a19f"}, {"url": "https://git.kernel.org/stable/c/1e36c6c8dc8023b4bbe9a16e819f9998b9b6a183"}, {"url": "https://git.kernel.org/stable/c/5d334bce9fad58cf328d8fa14ea1fff855819863"}, {"url": "https://git.kernel.org/stable/c/dce6c2aa70e94c04c523b375dfcc664d7a0a560a"}, {"url": "https://git.kernel.org/stable/c/bb37252c9af1cb250f34735ee98f80b46be3cef1"}, {"url": "https://git.kernel.org/stable/c/20080709457bc1e920eb002483d7d981d9b2ac1c"}, {"url": "https://git.kernel.org/stable/c/a67c6397fcb7e842d3c595243049940970541c48"}, {"url": "https://git.kernel.org/stable/c/d77b6ff0ce35a6d0b0b7b9581bc3f76d041d4087"}], "title": "batman-adv: fix OOB read/write in network-coding decode", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbatman-adv: fix OOB read/write in network-coding decode\n\nbatadv_nc_skb_decode_packet() trusts coded_len and checks only against\nskb->len. XOR starts at sizeof(struct batadv_unicast_packet), reducing\npayload headroom, and the source skb length is not verified, allowing an\nout-of-bounds read and a small out-of-bounds write.\n\nValidate that coded_len fits within the payload area of both destination\nand source sk_buffs before XORing."}], "id": "CVE-2025-39839", "lastModified": "2025-09-22T21:23:01.543", "metrics": {}, "published": "2025-09-19T16:15:42.570", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/1e36c6c8dc8023b4bbe9a16e819f9998b9b6a183"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/20080709457bc1e920eb002483d7d981d9b2ac1c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/30fc47248f02b8a14a61df469e1da4704be1a19f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/5d334bce9fad58cf328d8fa14ea1fff855819863"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a67c6397fcb7e842d3c595243049940970541c48"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/bb37252c9af1cb250f34735ee98f80b46be3cef1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d77b6ff0ce35a6d0b0b7b9581bc3f76d041d4087"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/dce6c2aa70e94c04c523b375dfcc664d7a0a560a"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{"bugzilla": {"description": "kernel: batman-adv: fix OOB read/write in network-coding decode", "id": "2396919", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2396919"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "details": ["No description is available for this CVE."], "name": "CVE-2025-39839", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-09-19T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-39839\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-39839\nhttps://lore.kernel.org/linux-cve-announce/2025091902-CVE-2025-39839-2786@gregkh/T"], "threat_severity": "Moderate"}

{"created": "2025-09-22T10:00:01.391624+00:00", "updated": "2025-09-22T10:06:22.818693+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}