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Описание
Оригинално описание
In the Linux kernel, the following vulnerability has been resolved: s390/dasd: Guard sysfs discipline callbacks against unallocated private data Several sysfs show/store handlers call a discipline callback that dereferences device->private, either directly or through the DASD_DEFINE_ATTR() macro. During dasd_generic_set_online() the discipline is assigned before check_device() allocates device->private, so an unprivileged read of one of these world-readable attributes in that window dereferences a NULL pointer and panics. Guard the dereference inside each callback that actually touches device->private.
Засегнати продукти
- Linux Linux: c729696bcf8b23450043dd9c9972c15e53419ae4 преди 644b666c202cce12ccfcf9ded67089b18f4f7659; c729696bcf8b23450043dd9c9972c15e53419ae4 преди 4a042d8e5f34282577ece50515cea8bb1246914d; c729696bcf8b23450043dd9c9972c15e53419ae4 преди bd8b4572528f9604a13bf3c7c2a167f5cf222f72; c729696bcf8b23450043dd9c9972c15e53419ae4 преди 57db27ccc162afe0726cffec0ae62e410ed2d0e9; c729696bcf8b23450043dd9c9972c15e53419ae4 преди 536407b272402af679155910d7fdeeb4834eefb9; c729696bcf8b23450043dd9c9972c15e53419ae4 преди 6452c13646af7c13d7f6668b6690cfb2427e7f7b; c729696bcf8b23450043dd9c9972c15e53419ae4 преди 449f3bada7a9fad8b8cdf4bb20baf27ee9ca56c5; c729696bcf8b23450043dd9c9972c15e53419ae4 преди 2a1780f9fc2493bd34c418a0be6fc58943afcecf
- Linux Linux: 5.3; преди 5.3; 5.10.270 до 5.10.*; 5.15.221 до 5.15.*; 6.1.188 до 6.1.*; 6.6.157 до 6.6.*; 6.12.109 до 6.12.*; 6.18.50 до 6.18.*; 7.2.4 до 7.2.*; от 7.3 нататък
История
- 11 септември 2026 Публикувано
Други уязвимости в Linux Linux
Първоизточници
- https://www.cve.org/CVERecord?id=CVE-2026-89457
- https://nvd.nist.gov/vuln/detail/CVE-2026-89457
- https://git.kernel.org/stable/c/644b666c202cce12ccfcf9ded67089b18f4f7659
- https://git.kernel.org/stable/c/4a042d8e5f34282577ece50515cea8bb1246914d
- https://git.kernel.org/stable/c/bd8b4572528f9604a13bf3c7c2a167f5cf222f72
- https://git.kernel.org/stable/c/57db27ccc162afe0726cffec0ae62e410ed2d0e9
- https://git.kernel.org/stable/c/536407b272402af679155910d7fdeeb4834eefb9
- https://git.kernel.org/stable/c/6452c13646af7c13d7f6668b6690cfb2427e7f7b
- https://git.kernel.org/stable/c/449f3bada7a9fad8b8cdf4bb20baf27ee9ca56c5
- https://git.kernel.org/stable/c/2a1780f9fc2493bd34c418a0be6fc58943afcecf