159 lines
7.4 KiB
JSON
159 lines
7.4 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-98821",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2026-09-25T10:25:14.372Z",
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"datePublished": "2026-10-18T15:49:13.154Z",
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"dateUpdated": "2026-10-19T09:26:14.186Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-10-19T09:26:14.186Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nblock: reject polled dio with user integrity metadata\n\nIOCB_HAS_METADATA leaves iocb->private as a uio_meta, while\niocb_bio_iopoll() expects a bio. Since 2729a60bbfb9, metadata I/O\nalways uses __blkdev_direct_IO(), which never publishes the bio for\npolling, so IOPOLL calls bio_poll() on the uio_meta.\n\nReproducer: io_uring IOPOLL plus a PI attribute on an integrity device\n(scsi_debug dif=1 dix=1). KASAN reports:\n\n Oops: general protection fault, probably for non-canonical\n address 0xdffffc0000000004\n KASAN: null-ptr-deref in range\n [0x0000000000000020-0x0000000000000027]\n RIP: 0010:bio_poll+0x9d/0x4b0\n Call Trace:\n iocb_bio_iopoll+0x5b/0x80\n io_uring_classic_poll+0xf3/0x140\n io_do_iopoll+0x4e3/0xc00\n io_iopoll_check+0x275/0x560\n __do_sys_io_uring_enter+0x2e5/0x720\n\nReturn -EOPNOTSUPP when HIPRI is combined with user metadata."
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"block/fops.c"
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],
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"versions": [
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{
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"version": "2729a60bbfb9215997f25372ebe9b7964f038296",
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"lessThan": "c97ef13ad96be0e08af38dfa2ed40cded0b53e1b",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "2729a60bbfb9215997f25372ebe9b7964f038296",
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"lessThan": "dd33c03cefccdfcb223e9e6262643d64f8c1ae20",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "2729a60bbfb9215997f25372ebe9b7964f038296",
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"lessThan": "2a42e6fe1293f2e2d579c9fe5bbab056dd8b880e",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "17ecefc9fdd8c554e0d03e5a990daef19f930add",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "6.16.8",
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"lessThan": "6.17",
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"status": "affected",
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"versionType": "semver"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"block/fops.c"
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],
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"versions": [
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{
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"version": "6.17",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "6.17",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.18.56",
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"lessThanOrEqual": "6.18.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.2.10",
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"lessThanOrEqual": "7.2.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.3",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.17",
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"versionEndExcluding": "6.18.56"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.17",
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"versionEndExcluding": "7.2.10"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.17",
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"versionEndExcluding": "7.3"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.16.8"
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}
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]
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}
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]
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}
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/c97ef13ad96be0e08af38dfa2ed40cded0b53e1b"
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},
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{
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"url": "https://git.kernel.org/stable/c/dd33c03cefccdfcb223e9e6262643d64f8c1ae20"
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},
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{
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"url": "https://git.kernel.org/stable/c/2a42e6fe1293f2e2d579c9fe5bbab056dd8b880e"
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}
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],
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"title": "block: reject polled dio with user integrity metadata",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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}
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}
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} |