CVE-2026-74728
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
xfs: handle NULL b_addr in xfs_buf_free
In the Linux kernel, the following vulnerability has been resolved: xfs: handle NULL b_addr in xfs_buf_free When xfs_buf_alloc_backing_mem() fails, xfs_buf_free() is called with bp->b_addr still NULL. The code falls through to the folio_put path which calls virt_to_folio(NULL), dereferencing an invalid address and causing a kernel crash. Call Trace: xfs_buf_free+0x25f/0x510 xfs_buf_alloc+0xc98/0x19b0 xfs_buf_find_insert+0x55/0x14d0 xfs_buf_get_map+0x122b/0x17c0 xfbtree_init_leaf_block+0x11c/0x4a0 xfbtree_init+0x1bb/0x460 xrep_rmap_setup_scan+0x100/0x1f0 xrep_rmapbt+0x41/0xc0 Fix this by skipping folio_put() when bp->b_addr is NULL.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 5076a6040ca1613e616d84aecfaac5f932db84e0 | affected | git | 444ff50ece93060131ad84fbd3f378723d8ac243 | Unavailable | None listed |
| 5076a6040ca1613e616d84aecfaac5f932db84e0 | affected | git | ccf6738adcafa5ddbddc4e71b45d8a51b86643c7 | Unavailable | None listed |
| 5076a6040ca1613e616d84aecfaac5f932db84e0 | affected | git | 3aa0c1d23ee1b9d9b340fb2f4736536e1408d706 | Unavailable | None listed |
| 5076a6040ca1613e616d84aecfaac5f932db84e0 | affected | git | d852729c5f4f830fbe7413df032e29459b3daf83 | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 6.9 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 6.9 | Unavailable | None listed |
| 6.12.114 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.45 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.1.9 | unaffected | semver | Unavailable | 7.1.* | None listed |
| 7.2 | unaffected | original_commit_for_fix | Unavailable | * | None listed |