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CVE-2026-53129— fs/mbcache: cancel shrink work before destroying the cache

AI Predicted 6.5 Difficulty: Moderate EPSS 0.16% · P5

Affected Version Matrix 10

VendorProductVersion RangeStatus
LinuxLinuxc2f3140fe2eceb3a6c1615b2648b9471544881c6< a88d39a74a208e197c03bffaa2df34de732af19faffected
c2f3140fe2eceb3a6c1615b2648b9471544881c6< 0e4eff315d799f5842b95872199b0f0fb8ef5f51affected
c2f3140fe2eceb3a6c1615b2648b9471544881c6< b25fd3523bef88fb7ffd4c5b63bbe9c08f73bb4caffected
c2f3140fe2eceb3a6c1615b2648b9471544881c6< d227786ab1119669df4dc333a61510c52047cce4affected
4.6affected
< 4.6unaffected
6.12.91≤ 6.12.*unaffected
6.18.33≤ 6.18.*unaffected
… +2 more rows
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I. Basic Information for CVE-2026-53129

Vulnerability Information
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Vulnerability Title
fs/mbcache: cancel shrink work before destroying the cache
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: fs/mbcache: cancel shrink work before destroying the cache mb_cache_destroy() calls shrinker_free() and then frees all cache entries and the cache itself, but it does not cancel the pending c_shrink_work work item first. If mb_cache_entry_create() schedules c_shrink_work via schedule_work() and the work item is still pending or running when mb_cache_destroy() runs, mb_cache_shrink_worker() will access the cache after its memory has been freed, causing a use-after-free. This is only reachable by a privileged user (root or CAP_SYS_ADMIN) who can trigger the last put of a mounted ext2/ext4/ocfs2 filesystem. Cancel the work item with cancel_work_sync() before calling shrinker_free(), ensuring the worker has finished and will not be rescheduled before the cache is torn down.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会开源的操作系统Linux所使用的内核。 Linux kernel 4.6版本存在安全漏洞，该漏洞源于fs/mbcache中在销毁缓存前未取消收缩工作，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

VendorProductAffected VersionsCPESubscribe
LinuxLinux c2f3140fe2eceb3a6c1615b2648b9471544881c6 ~ a88d39a74a208e197c03bffaa2df34de732af19f -
LinuxLinux 4.6 -

II. Public POCs for CVE-2026-53129

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III. Intelligence Information for CVE-2026-53129

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Patches & Fixes for CVE-2026-53129 (4)

Same Patch Batch · Linux · 2026-06-24 · 219 CVEs total

CVE-2026-530889.8 CRITICALnet: bcmgenet: fix off-by-one in bcmgenet_put_txcb
CVE-2026-529939.8 CRITICALtipc: fix double-free in tipc_buf_append()
CVE-2026-529899.8 CRITICALnvmet-tcp: propagate nvmet_tcp_build_pdu_iovec() errors to its callers
CVE-2026-529869.8 CRITICALnetfilter: nf_conntrack_sip: don't use simple_strtoul
CVE-2026-529829.8 CRITICALnet: usb: rtl8150: fix use-after-free in rtl8150_start_xmit()
CVE-2026-530029.8 CRITICALnetfilter: conntrack: remove sprintf usage
CVE-2026-530069.8 CRITICALipv6: fix possible UAF in icmpv6_rcv()
CVE-2026-530459.8 CRITICALmemory: tegra124-emc: Fix dll_change check
CVE-2026-530869.8 CRITICALnet: bcmgenet: fix racing timeout handler
CVE-2026-530469.8 CRITICALksmbd: fix use-after-free from async crypto on Qualcomm crypto engine
CVE-2026-529559.8 CRITICALlibceph: Fix potential out-of-bounds access in crush_decode()
CVE-2026-530499.8 CRITICALgfs2: add some missing log locking
CVE-2026-530559.8 CRITICALcrypto: hisilicon/sec2 - prevent req used-after-free for sec
CVE-2026-529249.8 CRITICALsctp: purge outqueue on stale COOKIE-ECHO handling
CVE-2026-530109.8 CRITICALksmbd: fix use-after-free in smb2_open during durable reconnect
CVE-2026-529319.8 CRITICALbatman-adv: tp_meter: avoid use of uninit sender vars
CVE-2026-529149.8 CRITICALbatman-adv: fix fragment reassembly length accounting
CVE-2026-529589.1 CRITICALlibceph: Fix potential out-of-bounds access in osdmap_decode()
CVE-2026-529999.1 CRITICALnetfilter: nfnetlink_osf: fix out-of-bounds read on option matching
CVE-2026-530439.1 CRITICALocfs2/dlm: validate qr_numregions in dlm_match_regions()

Showing top 20 of 219 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-53129

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