{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2024-47682","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2024-09-30T16:00:12.941Z","datePublished":"2024-10-21T11:53:24.460Z","dateUpdated":"2026-08-05T11:39:26.150Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-08-05T11:39:26.150Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: sd: Fix off-by-one error in sd_read_block_characteristics()\n\nFf the device returns page 0xb1 with length 8 (happens with qemu v2.x, for\nexample), sd_read_block_characteristics() may attempt an out-of-bounds\nmemory access when accessing the zoned field at offset 8."}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H","baseScore":8.6,"baseSeverity":"HIGH"},"scenarios":[{"lang":"en","value":"AV:N - The out-of-bounds read is driven entirely by the SCSI target's INQUIRY VPD page 0xb1 response, and the sd driver sits on top of network transports (iSCSI over TCP/3260, SRP, FCoE) where that response arrives from a remote peer. A malicious or compromised target — or an attacker spoofing/MITM'ing a commonly-unauthenticated iSCSI session — supplies the short page directly over the network.\nAC:L - The target simply reports page 0xb1 with a page length of 4 (total length 8), which makes vpd->len == 8 pass the `< 8` check and the read of data[8] occur deterministically on every probe/rescan. This is a real-world occurrence (qemu 2.x), requiring no timing, layout, or race conditions.\nPR:N - The remote target holds no privileges on the initiator host; the malformed VPD page is consumed unconditionally during device discovery/revalidation with no authentication or capability check on the initiator side. iSCSI is frequently deployed without CHAP, so no credentials are needed.\nUI:N - No operator action is required — sd_revalidate_disk() runs automatically on probe, on iSCSI session reconnect, and on rescan, so the attacker-controlled response is parsed without any victim interaction.\nS:U - The OOB read and its consequences are confined to the kernel's own memory and the SCSI/block layer's data structures; no security authority boundary such as a VM or IOMMU boundary is crossed.\nC:L - The read is strictly bounded to a single byte at a fixed offset past the VPD data, and only bits 4-5 of it become observable, surfacing through /sys/block/sdX/device/zoned_cap and the dmesg classification message. The attacker cannot scan or seek to arbitrary memory, so the disclosure of uninitialized heap content is limited.\nI:L - Uninitialized/out-of-bounds heap content is written into sdkp->zoned and then used to configure the block device's zoned model via disk_set_zoned(), so uncontrolled data modifies persistent kernel device state. The modification is limited and not attacker-chosen, so it does not amount to an arbitrary write.\nA:H - When the stale byte yields zoned == 1, a normal disk is misclassified as host-aware zoned and sd_zbc_read_zones() fails, driving the error path that sets sdkp->capacity = 0 and zeroes the gendisk capacity — the storage device becomes unusable, which is fatal if it is the boot/root disk. Additionally the access crosses the kmalloc request boundary on 32-bit and under KFENCE/KASAN, producing a slab-out-of-bounds report that panics on panic_on_warn configurations."}]}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/scsi/sd.c"],"versions":[{"version":"7fb019c46eeea4e3cc3ddfd3e01a24e610f34fac","lessThan":"60312ae7392f9c75c6591a52fc359cf7f810d48f","status":"affected","versionType":"git"},{"version":"7fb019c46eeea4e3cc3ddfd3e01a24e610f34fac","lessThan":"568c7c4c77eee6df7677bb861b7cee7398a3255d","status":"affected","versionType":"git"},{"version":"7fb019c46eeea4e3cc3ddfd3e01a24e610f34fac","lessThan":"a776050373893e4c847a49abeae2ccb581153df0","status":"affected","versionType":"git"},{"version":"7fb019c46eeea4e3cc3ddfd3e01a24e610f34fac","lessThan":"413df704f149dec585df07466d2401bbd1f490a0","status":"affected","versionType":"git"},{"version":"7fb019c46eeea4e3cc3ddfd3e01a24e610f34fac","lessThan":"f81eaf08385ddd474a2f41595a7757502870c0eb","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/scsi/sd.c"],"versions":[{"version":"5.19","status":"affected"},{"version":"0","lessThan":"5.19","status":"unaffected","versionType":"semver"},{"version":"6.1.113","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.54","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.10.13","lessThanOrEqual":"6.10.*","status":"unaffected","versionType":"semver"},{"version":"6.11.2","lessThanOrEqual":"6.11.*","status":"unaffected","versionType":"semver"},{"version":"6.12","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":"5.19","versionEndExcluding":"6.1.113"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.19","versionEndExcluding":"6.6.54"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.19","versionEndExcluding":"6.10.13"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.19","versionEndExcluding":"6.11.2"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.19","versionEndExcluding":"6.12"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/60312ae7392f9c75c6591a52fc359cf7f810d48f"},{"url":"https://git.kernel.org/stable/c/568c7c4c77eee6df7677bb861b7cee7398a3255d"},{"url":"https://git.kernel.org/stable/c/a776050373893e4c847a49abeae2ccb581153df0"},{"url":"https://git.kernel.org/stable/c/413df704f149dec585df07466d2401bbd1f490a0"},{"url":"https://git.kernel.org/stable/c/f81eaf08385ddd474a2f41595a7757502870c0eb"}],"title":"scsi: sd: Fix off-by-one error in sd_read_block_characteristics()","x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2024-47682","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2024-10-21T13:07:09.255382Z"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2024-10-21T13:14:16.478Z"}},{"title":"CVE Program Container","references":[{"url":"https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"}],"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2025-11-03T22:20:47.796Z"}}]}}