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CVE-2026-31454— xfs: save ailp before dropping the AIL lock in push callbacks

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xfs_inode_item_push和xfs_qm_dquot_logitem_push函数在释放AIL锁后访问lip->li_ailp，可能导致释放后重用。

CVSS 7.8 · High EPSS 0.17% · P6

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 90c60e16401248a4900f3f9387f563d0178dcf34< edd1637d4e3911ab6c760f553f2040fe72f61a13 affected
90c60e16401248a4900f3f9387f563d0178dcf34< 19437e4f7bb909afde832b39372aa2f3ce3cfd88 affected
90c60e16401248a4900f3f9387f563d0178dcf34< 6dbe17f19c290a72ce57d5abc70e1fad0c3e14e5 affected
90c60e16401248a4900f3f9387f563d0178dcf34< 75669e987137f49c99ca44406bf0200d1892dd16 affected
90c60e16401248a4900f3f9387f563d0178dcf34< d8fc60bbaf5aea1604bf9f4ed565da6a1ac7a87d affected
90c60e16401248a4900f3f9387f563d0178dcf34< 50f5f056807b7bed74f4f307f2ca0ed92f3e556d affected
90c60e16401248a4900f3f9387f563d0178dcf34< 4c7d50147316cf049462f327c4a3e9dc2b7f1dd0 affected
90c60e16401248a4900f3f9387f563d0178dcf34< 394d70b86fae9fe865e7e6d9540b7696f73aa9b6 affected
… +10 more rows
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I. Basic Information for CVE-2026-31454

Vulnerability Information
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Vulnerability Title
xfs: save ailp before dropping the AIL lock in push callbacks
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: xfs: save ailp before dropping the AIL lock in push callbacks In xfs_inode_item_push() and xfs_qm_dquot_logitem_push(), the AIL lock is dropped to perform buffer IO. Once the cluster buffer no longer protects the log item from reclaim, the log item may be freed by background reclaim or the dquot shrinker. The subsequent spin_lock() call dereferences lip->li_ailp, which is a use-after-free. Fix this by saving the ailp pointer in a local variable while the AIL lock is held and the log item is guaranteed to be valid.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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xfs_inode_item_push和xfs_qm_dquot_logitem_push函数在释放AIL锁后访问lip->li_ailp，可能导致释放后重用。
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

Vendor Product Affected Versions CPE Subscribe
Linux Linux 90c60e16401248a4900f3f9387f563d0178dcf34 ~ edd1637d4e3911ab6c760f553f2040fe72f61a13 -
Linux Linux 5.9 -

II. Public POCs for CVE-2026-31454

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III. Intelligence Information for CVE-2026-31454

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Same Patch Batch · Linux · 2026-04-22 · 100 CVEs total

CVE-2026-31463 9.8 CRITICAL iomap: fix invalid folio access when i_blkbits differs from I/O granularity
CVE-2026-31436 9.8 CRITICAL dmaengine: idxd: fix possible wrong descriptor completion in llist_abort_desc()
CVE-2026-31478 9.8 CRITICAL ksmbd: replace hardcoded hdr2_len with offsetof() in smb2_calc_max_out_buf_len()
CVE-2026-31444 9.8 CRITICAL ksmbd: fix use-after-free and NULL deref in smb_grant_oplock()
CVE-2026-31501 9.8 CRITICAL net: ti: icssg-prueth: fix use-after-free of CPPI descriptor in RX path
CVE-2026-31448 9.4 CRITICAL ext4: avoid infinite loops caused by residual data
CVE-2026-31432 8.8 HIGH ksmbd: fix OOB write in QUERY_INFO for compound requests
CVE-2026-31433 8.8 HIGH ksmbd: fix potencial OOB in get_file_all_info() for compound requests
CVE-2026-31435 8.8 HIGH netfs: Fix read abandonment during retry
CVE-2026-31450 8.8 HIGH ext4: publish jinode after initialization
CVE-2026-31476 8.2 HIGH ksmbd: do not expire session on binding failure
CVE-2026-31513 8.1 HIGH Bluetooth: L2CAP: Fix stack-out-of-bounds read in l2cap_ecred_conn_req
CVE-2026-31464 8.1 HIGH scsi: ibmvfc: Fix OOB access in ibmvfc_discover_targets_done()
CVE-2026-31490 7.8 HIGH drm/xe/pf: Fix use-after-free in migration restore
CVE-2026-31446 7.8 HIGH ext4: fix use-after-free in update_super_work when racing with umount
CVE-2026-31494 7.8 HIGH net: macb: use the current queue number for stats
CVE-2026-31502 7.8 HIGH team: fix header_ops type confusion with non-Ethernet ports
CVE-2026-31504 7.8 HIGH net: fix fanout UAF in packet_release() via NETDEV_UP race
CVE-2026-31505 7.8 HIGH iavf: fix out-of-bounds writes in iavf_get_ethtool_stats()
CVE-2026-31431 7.8 HIGH crypto: algif_aead - Revert to operating out-of-place

Showing top 20 of 100 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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