CVE-2026-64322

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: udf: validate sparing table length as an entry count, not a byte count udf_load_sparable_map() accepts a sparing table when sizeof(*st) + le16_to_cpu(st->reallocationTableLen) > sb->s_blocksize is false, i.e. it treats reallocationTableLen as a number of BYTES that must fit in the block. But the table is walked as an array of 8-byte sparingEntry elements: for (i = 0; i < le16_to_cpu(st->reallocationTableLen); i++) { struct sparingEntry *entry = &st->mapEntry[i]; ... entry->origLocation ... } in udf_get_pblock_spar15() and u...

Affected product and versions

Product

Linux

Affected versions

>= 1df2ae31c724e57be9d7ac00d78db8a5dabdd050 < eeb0f3e193f8e523d03e4c9e084f6b4875f50e8e, >= 1df2ae31c724e57be9d7ac00d78db8a5dabdd050 < 0a9b79a951cfd70a9d31ca01ae2d08a20bb730e9, >= 1df2ae31c724e57be9d7ac00d78db8a5dabdd050 < 2d726135099313958f8975532a2e15322ff150ce, >= 1df2ae31c724e57be9d7ac00d78db8a5dabdd050 < 7285276aa50d2839afb5957ffd491ad282dc8f72, >= 1df2ae31c724e57be9d7ac00d78db8a5dabdd050 < 2a219acb2ce674d99bbd1b7b35ed8c384dac7200, >= 1df2ae31c724e57be9d7ac00d78db8a5dabdd050 < 04f4599a9efb90992d072a814960edf0cd62805d, >= 1df2ae31c724e57be9d7ac00d78db8a5dabdd050 < 7f7774b9da0ef17b87bfa238cf966ad0b3376150, >= 1df2ae31c724e57be9d7ac00d78db8a5dabdd050 < 3ec997bd5508e9b25210b5bbec89031629cdb093, >= e240873cb4a9fd18de60a817100a96fe670d4359, >= 9ae30e324a96d0328a575329d7a95a09b3318601, >= b1c5701ad6b3e5d21d16f65475651cfaaa41e7aa, >= a9f1af04f086656246f30354fb4564ce3b08c4a0, >= 4836ee563d65bb492f907cbe267a5761b9693e4d, >= 2.6.32.60 < 2.6.33, >= 2.6.34.14 < 2.6.35, >= 3.0.37 < 3.1, >= 3.2.23 < 3.3, >= 3.4.5 < 3.5, >= 3.5

Fixed versions

No verified fixed-version field is available yet

Technical data

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE

Not available