CVE-2026-98555

A flaw in the Linux kernel's Logical Link Control (LLC) subsystem allows for a use-after-free (UAF) , double-free , and memory leaks . When llc_mac_hdr_init() fails during network packet header initialization, the kernel incorrectly frees the skb buffer instead of the nskb buffer. Specifically, i...

CVE-2026-98555 llc: fix skb UAF and leaks on llc_mac_hdr_init() failure

In the Linux kernel, the following vulnerability has been resolved: llc: fix skb UAF and leaks on llcmachdrinit failure In llcconnacresendixxxxset0orsendrr, if llcmachdrinit fails, kfreeskbskb is called instead of kfreeskbnskb. This leaks the newly allocated nskb, reads from the freed skb via...

EUVD-2026-103599

In the Linux kernel, the following vulnerability has been resolved: vlan: ensure sufficient headroom in vlandevhardheader Callers that only reserve ETHHLEN or less such as llcallocframe, or skbs allocated before dynamic device/headroom changes e.g. toggling VLANFLAGREORDERHDR or bonding/team...

CVE-2026-98554 vlan: ensure sufficient headroom in vlan_dev_hard_header()

In the Linux kernel, the following vulnerability has been resolved: vlan: ensure sufficient headroom in vlandevhardheader Callers that only reserve ETHHLEN or less such as llcallocframe, or skbs allocated before dynamic device/headroom changes e.g. toggling VLANFLAGREORDERHDR or bonding/team...

CVE-2026-98554

The Linux kernel contains a vulnerability in the vlan component where certain callers (e.g., llc_alloc_frame() ) or skbs allocated before dynamic headroom changes can reach vlan_dev_hard_header() with insufficient headroom. This condition triggers a skb_under_panic() . The issue is addressed by u...

CVE-2026-98554 vlan: ensure sufficient headroom in vlan_dev_hard_header()

In the Linux kernel, the following vulnerability has been resolved: vlan: ensure sufficient headroom in vlandevhardheader Callers that only reserve ETHHLEN or less such as llcallocframe, or skbs allocated before dynamic device/headroom changes e.g. toggling VLANFLAGREORDERHDR or bonding/team...

CVE-2026-98553 autofs: fix sbi->pipe file reference leak in autofs_kill_sb()

In the Linux kernel, the following vulnerability has been resolved: autofs: fix sbi-pipe file reference leak in autofskillsb When autofsfillsuper fails before clearing AUTOFSSBICATATONIC for example, when findgetpid fails on an invalid pgrp mount option, or when an fscontext is closed before...

EUVD-2026-103598

In the Linux kernel, the following vulnerability has been resolved: autofs: fix sbi-pipe file reference leak in autofskillsb When autofsfillsuper fails before clearing AUTOFSSBICATATONIC for example, when findgetpid fails on an invalid pgrp mount option, or when an fscontext is closed before...

CVE-2026-98553 autofs: fix sbi->pipe file reference leak in autofs_kill_sb()

In the Linux kernel, the following vulnerability has been resolved: autofs: fix sbi-pipe file reference leak in autofskillsb When autofsfillsuper fails before clearing AUTOFSSBICATATONIC for example, when findgetpid fails on an invalid pgrp mount option, or when an fscontext is closed before...

CVE-2026-98553

The Linux kernel contains a vulnerability in the autofs component where a pipe struct file reference is permanently leaked. This occurs when autofs_fill_super() fails before clearing the AUTOFS_SBI_CATATONIC flag—specifically during find_get_pid() failures on invalid pgrp mount options or when an...

CVE-2026-98552 perf/core: Fix a refcount leak in attach_perf_ctx_data()

In the Linux kernel, the following vulnerability has been resolved: perf/core: Fix a refcount leak in attachperfctxdata The attachperfctxdata can race on global and !global cases. The global case is protected by globalctxdatarwsem and shares a single reference count using perfctxdata.global field...

EUVD-2026-103597

In the Linux kernel, the following vulnerability has been resolved: perf/core: Fix a refcount leak in attachperfctxdata The attachperfctxdata can race on global and !global cases. The global case is protected by globalctxdatarwsem and shares a single reference count using perfctxdata.global field...

EUVD-2026-103596

In the Linux kernel, the following vulnerability has been resolved: perf/core: Fill branch entries with a single assignment perfclearbranchentrybitfields clears the bitfields of struct perfbranchentry one by one and leaves from/to alone, since callers overwrite those straight away. The list has t...

CVE-2026-98552 perf/core: Fix a refcount leak in attach_perf_ctx_data()

In the Linux kernel, the following vulnerability has been resolved: perf/core: Fix a refcount leak in attachperfctxdata The attachperfctxdata can race on global and !global cases. The global case is protected by globalctxdatarwsem and shares a single reference count using perfctxdata.global field...

CVE-2026-98551 perf/core: Fill branch entries with a single assignment

In the Linux kernel, the following vulnerability has been resolved: perf/core: Fill branch entries with a single assignment perfclearbranchentrybitfields clears the bitfields of struct perfbranchentry one by one and leaves from/to alone, since callers overwrite those straight away. The list has t...

CVE-2026-98551 perf/core: Fill branch entries with a single assignment

In the Linux kernel, the following vulnerability has been resolved: perf/core: Fill branch entries with a single assignment perfclearbranchentrybitfields clears the bitfields of struct perfbranchentry one by one and leaves from/to alone, since callers overwrite those straight away. The list has t...

CVE-2026-98552

The Linux kernel contains a reference count leak in the perf/core component within the attach_perf_ctx_data() function. The vulnerability stems from a race condition between global and !global cases. When these cases race, the system may fail to set the global field, leading to a reference count ...

CVE-2026-98551

The Linux kernel contains a vulnerability in the perf/core component specifically affecting the arm64 architecture. The issue arises because perf_clear_branch_entry_bitfields() failed to clear the new_type and priv bitfields in struct perf_branch_entry. Because arm_pmuv3.c allocates the per-CPU b...

CVE-2026-98550 tipc: reject invalid and unexpected GRP_ACK_MSG to prevent bc_ackers underflow

In the Linux kernel, the following vulnerability has been resolved: tipc: reject invalid and unexpected GRPACKMSG to prevent bcackers underflow Commit 48a5fe38772b "tipc: fix bcackers underflow on duplicate GRPACKMSG" rejected duplicate/stale ACKs in tipcgroupprotorcv by returning early when...

CVE-2026-98550

A flaw exists in the Linux kernel TIPC (Transparent Inter-Process Communication) subsystem where improper validation of incoming protocol messages allows an internal acknowledgment counter (bc_ackers ) to underflow. This occurs in two scenarios: when grp->bc_ackers is zero and an unexpected GR...