{"id":21474,"date":"2026-09-12T04:31:14","date_gmt":"2026-09-11T20:31:14","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-89552"},"modified":"2026-09-12T04:31:14","modified_gmt":"2026-09-11T20:31:14","slug":"cve-2026-89552","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-89552","title":{"rendered":"CVE-2026-89552 &#8211; In the Linux kernel, the following vulnerability has been resolved:\n\nparams: fix charp cor"},"content":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>params: fix charp corruption on allocation failure<\/p>\n<p>param_set_charp() stores charp parameters in allocated memory after slab is<br \/>\navailable, and releases the previous value when the parameter is updated.<\/p>\n<p>The previous value is released before the replacement allocation succeeds.<br \/>\nIf kmalloc_parameter() fails, the setter returns -ENOMEM with the parameter<br \/>\nleft as NULL.<\/p>\n<p>Failing zswap&#8217;s compressor update before zswap is initialized can later<br \/>\ntrigger:<\/p>\n<p>  BUG: kernel NULL pointer dereference, address: 0000000000000000<br \/>\n  RIP: 0010:strcmp+0x10\/0x30<br \/>\n  Call Trace:<br \/>\n    zswap_setup+0x3b1\/0x490<br \/>\n    zswap_enabled_param_set+0x5b\/0xa0<br \/>\n    param_attr_store+0x93\/0xe0<br \/>\n    module_attr_store+0x1c\/0x30<br \/>\n    kernfs_fop_write_iter+0x116\/0x1f0<\/p>\n<p>Allocate and copy the replacement first, then replace the parameter value<br \/>\nonly after allocation succeeds.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>params: fix charp corruption on allocation failure<\/p>\n<p>param_set_charp() stores charp parameters in allocated memory after slab is<br \/>\nava<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-21474","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/21474","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln"}],"about":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/types\/vuln"}],"wp:attachment":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=21474"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=21474"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=21474"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}