Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: ovl: fix UAF in ovl_dentry_update_reval by moving dput() in ovl_link_up The issue was caused by dput(upper) being called before ovl_dentry_update_reval(), while upper->d_flags was still accessed in ovl_dentry_remote(). Move dput(upper) after its last use to prevent use-after-free. BUG: KASAN: slab-use-after-free in ovl_dentry_remote fs/overlayfs/util.c:162 [inline] BUG: KASAN: slab-use-after-free in ovl_dentry_update_reval+0xd2/0xf0 fs/overlayfs/util.c:167 Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:114 print_address_description mm/kasan/report.c:377 [inline] print_report+0xc3/0x620 mm/kasan/report.c:488 kasan_report+0xd9/0x110 mm/kasan/report.c:601 ovl_dentry_remote fs/overlayfs/util.c:162 [inline] ovl_dentry_update_reval+0xd2/0xf0 fs/overlayfs/util.c:167 ovl_link_up fs/overlayfs/copy_up.c:610 [inline] ovl_copy_up_one+0x2105/0x3490 fs/overlayfs/copy_up.c:1170 ovl_copy_up_flags+0x18d/0x200 fs/overlayfs/copy_up.c:1223 ovl_rename+0x39e/0x18c0 fs/overlayfs/dir.c:1136 vfs_rename+0xf84/0x20a0 fs/namei.c:4893 ... </TASK>
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 714ba10a6dd19752a349e59aa875f3288ccb59b9 before f77618291836168eca99e89cd175256f928f5e64; affected 62f29ca45f832e281fc14966ac25f6ff3bd121ca before 4b49d939b5a79117f939b77cc67efae2694d9799; affected e4f2a1feebb3f209a0fca82aa53507a5b8be4d53 before a7c41830ffcd17b2177a95a9b99b270302090c35; affected b07d5cc93e1b28df47a72c519d09d0a836043613 before 64455c8051c3aedc71abb7ec8d47c80301f99f00; affected b07d5cc93e1b28df47a72c519d09d0a836043613 before 3594aad97e7be2557ca9fa9c931b206b604028c8; affected b07d5cc93e1b28df47a72c519d09d0a836043613 before 60b4b5c1277fc491da9e1e7abab307bfa39c2db7; affected b07d5cc93e1b28df47a72c519d09d0a836043613 before c84e125fff2615b4d9c259e762596134eddd2f27; affected 33ab4dd6202f359558a0a2678b94d1b9994c17e5; affected 1ecdc55e5cd9f70f8d7513802971d4cffb9f77af; affected 5.10.188 before 5.10.247; affected 5.15.121 before 5.15.179; affected 6.1.39 before 6.1.130; affected 6.3.13 before 6.4; affected 6.4.4 before 6.5 |
| Linux / Linux | affected 6.5; unaffected 0 before 6.5; unaffected 5.10.247 through 5.10.*; unaffected 5.15.179 through 5.15.*; unaffected 6.1.130 through 6.1.*; unaffected 6.6.81 through 6.6.*; unaffected 6.12.18 through 6.12.*; unaffected 6.13.6 through 6.13.*; unaffected 6.14 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/f77618291836168eca99e89cd175256f928f5e64
- https://git.kernel.org/stable/c/4b49d939b5a79117f939b77cc67efae2694d9799
- https://git.kernel.org/stable/c/a7c41830ffcd17b2177a95a9b99b270302090c35
- https://git.kernel.org/stable/c/64455c8051c3aedc71abb7ec8d47c80301f99f00
- https://git.kernel.org/stable/c/3594aad97e7be2557ca9fa9c931b206b604028c8
- https://git.kernel.org/stable/c/60b4b5c1277fc491da9e1e7abab307bfa39c2db7
- https://git.kernel.org/stable/c/c84e125fff2615b4d9c259e762596134eddd2f27
ADP enrichment
No English description supplied.
No references supplied.
No English description supplied.
No English description supplied.