Signal is active with 3 mentions in latest observed window
Recommended action window: Monitor and triage in normal cycle
NVD description
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.
Priority
LOW
Exploitation
NONE
PoC
NONE
Patch
AVAILABLE
Momentum
NONE
CVE-2026-74728 Linux Kernel xfs_buf_free Kernel Crash Due to NULL b_addr https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-74728
Post summary
The text announces CVE‑2026‑74728 as a Linux kernel crash vulnerability involving xfs_buf_free, but provides no PoC, exploit, active exploitation claim, or patch information.
🚨*CVE* CVE-2026-74728 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() i… https://www.cve.org/CVERecord?id=CVE-2026-74728 ----- Traducción: CVE-2026-74728 En … http://infoflow.cloud`
Post summary
CVE-2026-74728, a Linux kernel XFS vulnerability involving a NULL b_addr in xfs_buf_free, has been resolved; the post links to the CVE record for further details.
CVE-2026-74728 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() i… https://www.cve.org/CVERecord?id=CVE-2026-74728
Post summary
CVE-2026-74728, a Linux kernel XFS buffer free issue, has been fixed; no PoC, exploit, or active attacks are reported.