CVE ID : CVE-2026-23224<\/p>\n
Published : Feb. 18, 2026, 4:22 p.m. | 37\u00a0minutes ago<\/p>\n
Description : In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
erofs: fix UAF issue for file-backed mounts w\/ directio option<\/p>\n[ 9.269940][ T3222] Call trace:
\n[ 9.269948][ T3222] ext4_file_read_iter+0xac\/0x108
\n[ 9.269979][ T3222] vfs_iocb_iter_read+0xac\/0x198
\n[ 9.269993][ T3222] erofs_fileio_rq_submit+0x12c\/0x180
\n[ 9.270008][ T3222] erofs_fileio_submit_bio+0x14\/0x24
\n[ 9.270030][ T3222] z_erofs_runqueue+0x834\/0x8ac
\n[ 9.270054][ T3222] z_erofs_read_folio+0x120\/0x220
\n[ 9.270083][ T3222] filemap_read_folio+0x60\/0x120
\n[ 9.270102][ T3222] filemap_fault+0xcac\/0x1060
\n[ 9.270119][ T3222] do_pte_missing+0x2d8\/0x1554
\n[ 9.270131][ T3222] handle_mm_fault+0x5ec\/0x70c
\n[ 9.270142][ T3222] do_page_fault+0x178\/0x88c
\n[ 9.270167][ T3222] do_translation_fault+0x38\/0x54
\n[ 9.270183][ T3222] do_mem_abort+0x54\/0xac
\n[ 9.270208][ T3222] el0_da+0x44\/0x7c
\n[ 9.270227][ T3222] el0t_64_sync_handler+0x5c\/0xf4
\n[ 9.270253][ T3222] el0t_64_sync+0x1bc\/0x1c0<\/p>\n
EROFS may encounter above panic when enabling file-backed mount w\/
\ndirectio mount option, the root cause is it may suffer UAF in below
\nrace condition:<\/p>\n
– z_erofs_read_folio wq s_dio_done_wq
\n – z_erofs_runqueue
\n – erofs_fileio_submit_bio
\n – erofs_fileio_rq_submit
\n – vfs_iocb_iter_read
\n – ext4_file_read_iter
\n – ext4_dio_read_iter
\n – iomap_dio_rw
\n : bio was submitted and return -EIOCBQUEUED
\n – dio_aio_complete_work
\n – dio_complete
\n – dio->iocb->ki_complete (erofs_fileio_ki_complete())
\n – kfree(rq)
\n : it frees iocb, iocb.ki_filp can be UAF in file_accessed().
\n – file_accessed
\n : access NULL file point<\/p>\n
Introduce a reference count in struct erofs_fileio_rq, and initialize it
\nas two, both erofs_fileio_ki_complete() and erofs_fileio_rq_submit() will
\ndecrease reference count, the last one decreasing the reference count
\nto zero will free rq.<\/p>\n
Severity: 0.0 | NA<\/p>\n
Visit the link for more details, such as CVSS details, affected products, timeline, and more…\u00a0<\/p>\n","protected":false},"excerpt":{"rendered":"
CVE ID : CVE-2026-23224 Published : Feb. 18, 2026, 4:22 p.m. | 37\u00a0minutes ago Description : In the Linux kernel, the following vulnerability has been resolved: erofs: fix UAF issue for file-backed mounts w\/ directio option [ 9.269940][ T3222] Call trace: [ 9.269948][ T3222] ext4_file_read_iter+0xac\/0x108 [ 9.269979][ T3222] vfs_iocb_iter_read+0xac\/0x198 [ 9.269993][ T3222] erofs_fileio_rq_submit+0x12c\/0x180 [ 9.270008][ …<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[26],"tags":[],"class_list":["post-77387","post","type-post","status-publish","format-standard","hentry","category-vulnerability"],"_links":{"self":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/77387","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/comments?post=77387"}],"version-history":[{"count":0,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/77387\/revisions"}],"wp:attachment":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/media?parent=77387"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/categories?post=77387"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/tags?post=77387"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}