CVE-2026-23145— ext4: fix iloc.bh leak in ext4_xattr_inode_update_ref
Quick assessment
Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于ext4_xattr_inode_update_ref函数错误分支未释放iloc.bh引用计数，可能导致内存泄漏。
Possible ATT&CK Techniques 1 AI
T1564.001 · Hidden Files and DirectoriesAffected Version Matrix 25
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 1cfb3e4ddbdc8e02e637b8852540bd4718bf4814< 7c9f059c3d531a12d7ad96cd34a44b8af7c00d5f |
affected |
505e69f76ac497e788f4ea0267826ec7266b40c8< 6241cd1d0acc2363016ac55b8773ba1332dd59d7 |
affected | ||
3d6269028246f4484bfed403c947a114bb583631< 3b00c16e42428a1ecd3a5eb9cc37f8ad9bd47626 |
affected | ||
79ea7f3e11effe1bd9e753172981d9029133a278< 0b06cde92f2f960f4ebe3c988c69f2711f2a24dc |
affected | ||
6b879c4c6bbaab03c0ad2a983953bd1410bb165e< 8e8542c539927ae3898a4d02941f84e252e2dea1 |
affected | ||
57295e835408d8d425bef58da5253465db3d6888< 06e26287f2e349a28ad363941ffd9076bfed8b2e |
affected | ||
57295e835408d8d425bef58da5253465db3d6888< d250bdf531d9cd4096fedbb9f172bb2ca660c868 |
affected | ||
ea39e712c2f5ae148ee5515798ae03523673e002 |
affected | ||
| … +17 more rows | |||
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I. Basic Information for CVE-2026-23145
Vulnerability Information
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Vulnerability Title
ext4: fix iloc.bh leak in ext4_xattr_inode_update_ref
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
ext4: fix iloc.bh leak in ext4_xattr_inode_update_ref
The error branch for ext4_xattr_inode_update_ref forget to release the
refcount for iloc.bh. Find this when review code.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于ext4_xattr_inode_update_ref函数错误分支未释放iloc.bh引用计数，可能导致内存泄漏。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2026-23145
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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No public POC found.
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Same Patch Batch · Linux · 2026-02-14 · 108 CVEs total
| CVE-2025-71202 | 8.8 HIGH | iommu/sva: invalidate stale IOTLB entries for kernel address space |
| CVE-2026-23193 | 8.8 HIGH | scsi: target: iscsi: Fix use-after-free in iscsit_dec_session_usage_count() |
| CVE-2026-23172 | 8.4 HIGH | net: wwan: t7xx: fix potential skb->frags overflow in RX path |
| CVE-2026-23209 | 7.8 HIGH | macvlan: fix error recovery in macvlan_common_newlink() |
| CVE-2025-71221 | 7.8 HIGH | dmaengine: mmp_pdma: Fix race condition in mmp_pdma_residue() |
| CVE-2026-23178 | 7.8 HIGH | HID: i2c-hid: fix potential buffer overflow in i2c_hid_get_report() |
| CVE-2026-23184 | 7.8 HIGH | binder: fix UAF in binder_netlink_report() |
| CVE-2026-23185 | 7.8 HIGH | wifi: iwlwifi: mld: cancel mlo_scan_start_wk |
| CVE-2026-23171 | 7.8 HIGH | bonding: fix use-after-free due to enslave fail after slave array update |
| CVE-2026-23169 | 7.8 HIGH | mptcp: fix race in mptcp_pm_nl_flush_addrs_doit() |
| CVE-2026-23191 | 7.8 HIGH | ALSA: aloop: Fix racy access at PCM trigger |
| CVE-2026-23192 | 7.8 HIGH | linkwatch: use __dev_put() in callers to prevent UAF |
| CVE-2026-23198 | 7.8 HIGH | KVM: Don't clobber irqfd routing type when deassigning irqfd |
| CVE-2026-23136 | 7.5 HIGH | libceph: reset sparse-read state in osd_fault() |
| CVE-2026-23148 | 7.5 HIGH | nvmet: fix race in nvmet_bio_done() leading to NULL pointer dereference |
| CVE-2026-23139 | 7.5 HIGH | netfilter: nf_conncount: update last_gc only when GC has been performed |
| CVE-2025-71204 | 7.5 HIGH | smb/server: fix refcount leak in parse_durable_handle_context() |
| CVE-2026-23161 | 7.3 HIGH | mm/shmem, swap: fix race of truncate and swap entry split |
| CVE-2026-23204 | 7.1 HIGH | net/sched: cls_u32: use skb_header_pointer_careful() |
| CVE-2025-71201 | 7.1 HIGH | netfs: Fix early read unlock of page with EOF in middle |
Showing top 20 of 108 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
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CVE-2023-7356
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CVE-2026-98867
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CVE-2026-98866
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Same vendor: Linux
-
CVE-2023-7356
Bluetooth: ISO: Copy BASE if service data matches EIR_BAA_SE -
CVE-2026-98869
bpf: Infer zext_dst based on static register liveness analys -
CVE-2026-98868
dm-pcache: reject a kset that overruns its segment -
CVE-2026-98867
dm-pcache: bound the logical key offset from persistent memo -
CVE-2026-98866
sched/cache: Introduce task_struct->sched_cache_grp to fix U
V. Comments for CVE-2026-23145
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