{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2024-46777", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-09-11T15:12:18.275Z", "datePublished": "2024-09-18T07:12:34.315Z", "dateUpdated": "2026-08-05T11:38:29.949Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:38:29.949Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nudf: Avoid excessive partition lengths\n\nAvoid mounting filesystems where the partition would overflow the\n32-bits used for block number. Also refuse to mount filesystems where\nthe partition length is so large we cannot safely index bits in a\nblock bitmap." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:L - Exploitation requires the attacker to get a crafted UDF filesystem image mounted on the target — via removable media on a kiosk/workstation or a loop-mounted image — which is local access, not network reachability.\nAC:L - The attacker fully controls every field of the on-disk Partition Descriptor and can set `partitionLength`/`partitionStartingLocation` to deterministic overflow-triggering values; no race or uncontrollable precondition is involved.\nPR:L - On typical desktop, kiosk and embedded systems udisks2/systemd automounts attacker-supplied UDF media on behalf of a local unprivileged user, so no elevated privileges are needed to get the malicious partition descriptor parsed.\nUI:N - Under the automount scenario the local attacker inserts the media and the mount plus subsequent allocation activity proceed without any separate victim action.\nS:U - The corruption is confined to kernel memory and the block device within the same security authority; no VM, IOMMU or sandbox boundary is crossed.\nC:H - The negative `block_group` yields an out-of-bounds read of `bitmap->s_block_bitmap[]` far past the allocation, and the 32-bit physical block wrap makes the filesystem read blocks outside the partition, exposing arbitrary on-device and kernel heap data.\nI:H - `read_block_bitmap()` performs an out-of-bounds pointer store into `s_block_bitmap[]` and the bogus `buffer_head` is then used for `udf_clear_bit()`/`udf_set_bit()` on `bh->b_data`, giving a controlled-offset heap write; the block-number wrap additionally lets file data overwrite blocks outside the partition.\nA:H - The wild-pointer dereference of the out-of-bounds `struct buffer_head *` reliably oopses the kernel, and the resulting heap and on-disk metadata corruption causes further crashes." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "fs/udf/super.c" ], "versions": [ { "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "c0c23130d38e8bc28e9ef581443de9b1fc749966", "status": "affected", "versionType": "git" }, { "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "1497a4484cdb2cf6c37960d788fb6ba67567bdb7", "status": "affected", "versionType": "git" }, { "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "551966371e17912564bc387fbeb2ac13077c3db1", "status": "affected", "versionType": "git" }, { "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "2ddf831451357c6da4b64645eb797c93c1c054d1", "status": "affected", "versionType": "git" }, { "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "0173999123082280cf904bd640015951f194a294", "status": "affected", "versionType": "git" }, { "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "a56330761950cb83de1dfb348479f20c56c95f90", "status": "affected", "versionType": "git" }, { "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "925fd8ee80d5348a5e965548e5484d164d19221d", "status": "affected", "versionType": "git" }, { "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "ebbe26fd54a9621994bc16b14f2ba8f84c089693", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "fs/udf/super.c" ], "versions": [ { "version": "2.6.12", "status": "affected" }, { "version": "0", "lessThan": "2.6.12", "status": "unaffected", "versionType": "semver" }, { "version": "4.19.322", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.284", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.226", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.167", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.110", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.51", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.10.10", "lessThanOrEqual": "6.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.11", "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": "2.6.12", "versionEndExcluding": "4.19.322" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "5.4.284" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "5.10.226" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "5.15.167" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "6.1.110" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "6.6.51" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "6.10.10" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "6.11" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/c0c23130d38e8bc28e9ef581443de9b1fc749966" }, { "url": "https://git.kernel.org/stable/c/1497a4484cdb2cf6c37960d788fb6ba67567bdb7" }, { "url": "https://git.kernel.org/stable/c/551966371e17912564bc387fbeb2ac13077c3db1" }, { "url": "https://git.kernel.org/stable/c/2ddf831451357c6da4b64645eb797c93c1c054d1" }, { "url": "https://git.kernel.org/stable/c/0173999123082280cf904bd640015951f194a294" }, { "url": "https://git.kernel.org/stable/c/a56330761950cb83de1dfb348479f20c56c95f90" }, { "url": "https://git.kernel.org/stable/c/925fd8ee80d5348a5e965548e5484d164d19221d" }, { "url": "https://git.kernel.org/stable/c/ebbe26fd54a9621994bc16b14f2ba8f84c089693" } ], "title": "udf: Avoid excessive partition lengths", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2024-09-29T14:39:05.257297Z", "id": "CVE-2024-46777", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-09-29T14:39:19.543Z" } }, { "title": "CVE Program Container", "references": [ { "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html" }, { "url": "https://lists.debian.org/debian-lts-announce/2024/10/msg00003.html" } ], "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2025-11-03T22:18:17.885Z" } } ] } }