CVE-2026-93049

CVE-2026-93049 is a double-free vulnerability in the Linux kernel's mtdswap module. In mtdswap_add_mtd(), when debugfs setup fails after a successful blktrans registration, the code calls del_mtd_blktrans_dev() (which frees the blktrans device via blktrans_dev_release()), then falls through to a ...

EUVD-2026-82159

In the Linux kernel, the following vulnerability has been resolved: mtd: mtdswap: Avoid freeing registered blktrans device twice In mtdswapaddmtd, debugfs setup failure after successful blktrans registration can free mbddev twice. addmtdblktransdev initializes the blktrans device reference and...

CVE-2026-93049 mtd: mtdswap: Avoid freeing registered blktrans device twice

In the Linux kernel, the following vulnerability has been resolved: mtd: mtdswap: Avoid freeing registered blktrans device twice In mtdswapaddmtd, debugfs setup failure after successful blktrans registration can free mbddev twice. addmtdblktransdev initializes the blktrans device reference and...

CVE-2026-93049 mtd: mtdswap: Avoid freeing registered blktrans device twice

In the Linux kernel, the following vulnerability has been resolved: mtd: mtdswap: Avoid freeing registered blktrans device twice In mtdswapaddmtd, debugfs setup failure after successful blktrans registration can free mbddev twice. addmtdblktransdev initializes the blktrans device reference and...

CVE-2026-92505

CVE-2026-92505 addresses an undefined behavior bug in the Linux kernel's iommu/amd module, specifically in the devid_write debugfs function. The root cause is that when for_each_pci_segment() completes without finding a matching segment, the pci_seg pointer is left pointing to an invalid memory l...

CVE-2026-92505 iommu/amd: Fix undefined behavior in devid_write debugfs function

In the Linux kernel, the following vulnerability has been resolved: iommu/amd: Fix undefined behavior in devidwrite debugfs function When foreachpcisegment loop completes without finding a matching segment, the pciseg pointer is not NULL but points to an invalid memory location the list head...

CVE-2026-92477 scsi: ufs: debugfs: Reserve space for a string terminator

In the Linux kernel, the following vulnerability has been resolved: scsi: ufs: debugfs: Reserve space for a string terminator ufssavederrwrite copies user input into a zero-initialized stack buffer and passes it to kstrtoint. A write that fills the entire buffer overwrites its only terminator...

CVE-2026-92477

CVE-2026-92477 affects the Linux kernel in the UFS debugfs driver. The function ufs_saved_err_write() copies user input into a zero-initialized stack buffer and passes it to kstrtoint(). If a write fills the entire buffer, it overwrites the only NUL terminator , potentially causing an out-of-boun...

EUVD-2026-82098

In the Linux kernel, the following vulnerability has been resolved: scsi: ufs: debugfs: Reserve space for a string terminator ufssavederrwrite copies user input into a zero-initialized stack buffer and passes it to kstrtoint. A write that fills the entire buffer overwrites its only terminator...

CVE-2026-92477 scsi: ufs: debugfs: Reserve space for a string terminator

In the Linux kernel, the following vulnerability has been resolved: scsi: ufs: debugfs: Reserve space for a string terminator ufssavederrwrite copies user input into a zero-initialized stack buffer and passes it to kstrtoint. A write that fills the entire buffer overwrites its only terminator...

CVE-2026-90416 RDMA/mlx5: Fix stack out-of-bounds read in cc_params debugfs

In the Linux kernel, the following vulnerability has been resolved: RDMA/mlx5: Fix stack out-of-bounds read in ccparams debugfs getparam reads a congestion parameter as a u32 but formats it with the signed "%d" into an 11-byte stack buffer. A value with bit 31 set, such as 0x80000000, renders as...

CVE-2026-90219 RDMA/cxgb4: Free debugfs on registration failure

In the Linux kernel, the following vulnerability has been resolved: RDMA/cxgb4: Free debugfs on registration failure c4iwalloc creates the per-device debugfs tree dev-debugfsroot via setupdebugfs, but it is removed only in c4iwremove, not in c4iwdealloc. When RDMA device registration fails, the...

CVE-2026-90219

This vulnerability affects the Linux kernel 's RDMA/cxgb4 driver. The root cause is a debugfs dentry leak : c4iw_alloc() creates a per-device debugfs tree via setup_debugfs(), but the tree was only removed in c4iw_remove(), not in c4iw_dealloc(). When RDMA device registration fails, the err_deall...

EUVD-2026-81812

In the Linux kernel, the following vulnerability has been resolved: RDMA/cxgb4: Free debugfs on registration failure c4iwalloc creates the per-device debugfs tree dev-debugfsroot via setupdebugfs, but it is removed only in c4iwremove, not in c4iwdealloc. When RDMA device registration fails, the...

CVE-2026-90219 RDMA/cxgb4: Free debugfs on registration failure

In the Linux kernel, the following vulnerability has been resolved: RDMA/cxgb4: Free debugfs on registration failure c4iwalloc creates the per-device debugfs tree dev-debugfsroot via setupdebugfs, but it is removed only in c4iwremove, not in c4iwdealloc. When RDMA device registration fails, the...

CVE-2026-90209 s390/debug: Fix deadlock during unregister

In the Linux kernel, the following vulnerability has been resolved: s390/debug: Fix deadlock during unregister Unregistering an s390dbf debug area while one of the associated debugfs files is being written to can cause a deadlock: $ echo .../vmur/level $ rmmod vmur...

EUVD-2026-81802

In the Linux kernel, the following vulnerability has been resolved: s390/debug: Fix deadlock during unregister Unregistering an s390dbf debug area while one of the associated debugfs files is being written to can cause a deadlock: $ echo .../vmur/level $ rmmod vmur...

CVE-2026-90209 s390/debug: Fix deadlock during unregister

In the Linux kernel, the following vulnerability has been resolved: s390/debug: Fix deadlock during unregister Unregistering an s390dbf debug area while one of the associated debugfs files is being written to can cause a deadlock: $ echo .../vmur/level $ rmmod vmur...

CVE-2026-90209

CVE-2026-90209 affects the Linux kernel s390dbf debug subsystem . A deadlock occurs when a debug area is unregistered (e.g., via rmmod) while an associated debugfs file is simultaneously being written to. Both the unregister path (debug_unregister() → debugfs_remove() → waiting for debugfs_file_p...

CVE-2026-90085 octeontx2-af: fix NULL deref in NIX TM tree debugfs read path

In the Linux kernel, the following vulnerability has been resolved: octeontx2-af: fix NULL deref in NIX TM tree debugfs read path rvudbgnixtmtreedisplay dereferences pfvf-sqctx without checking whether the SQ context has been allocated. Reading /sys/kernel/debug/octeontx2/nix/tmtree for a NIX LF...