CVE-2024-35787: md/md-bitmap: fix incorrect usage for sb_index
First published: Fri May 17 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: md/md-bitmap: fix incorrect usage for sb_index Commit d7038f951828 ("md-bitmap: don't use ->index for pages backing the bitmap file") removed page->index from bitmap code, but left wrong code logic for clustered-md. current code never set slot offset for cluster nodes, will sometimes cause crash in clustered env. Call trace (partly): md_bitmap_file_set_bit+0x110/0x1d8 [md_mod] md_bitmap_startwrite+0x13c/0x240 [md_mod] raid1_make_request+0x6b0/0x1c08 [raid1] md_handle_request+0x1dc/0x368 [md_mod] md_submit_bio+0x80/0xf8 [md_mod] __submit_bio+0x178/0x300 submit_bio_noacct_nocheck+0x11c/0x338 submit_bio_noacct+0x134/0x614 submit_bio+0x28/0xdc submit_bh_wbc+0x130/0x1cc submit_bh+0x1c/0x28
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel | <6.6.24 | 6.6.24 |
| redhat/kernel | <6.7.12 | 6.7.12 |
| redhat/kernel | <6.8.3 | 6.8.3 |
| redhat/kernel | <6.9 | 6.9 |
| debian/linux | 5.10.223-1 5.10.226-1 6.1.115-1 6.1.119-1 6.12.5-1 |
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Reference Links
- https://git.kernel.org/stable/c/55e55eb65fd5e09faf5a0e49ffcdd37905aaf4da
- https://git.kernel.org/stable/c/5a95815b17428ce2f56ec18da5e0d1b2a1a15240
- https://git.kernel.org/stable/c/736ad6c577a367834118f57417038d45bb5e0a31
- https://git.kernel.org/stable/c/ecbd8ebb51bf7e4939d83b9e6022a55cac44ef06
- https://launchpad.net/bugs/cve/CVE-2024-35787
- https://access.redhat.com/security/cve/CVE-2024-35787
- https://lore.kernel.org/linux-cve-announce/2024051707-CVE-2024-35787-dede@gregkh/T
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2281062
- https://access.redhat.com/errata/RHSA-2024:9315
- https://bugzilla.redhat.com/show_bug.cgi?id=2281061
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-35787
- https://nvd.nist.gov/vuln/detail/CVE-2024-35787
- https://security-tracker.debian.org/tracker/CVE-2024-35787
- https://ubuntu.com/security/CVE-2024-35787
- https://git.kernel.org/linus/ecbd8ebb51bf7e4939d83b9e6022a55cac44ef06
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