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CVE-2026-23463— soc: fsl: qbman: fix race condition in qman_destroy_fq

AI Predicted 5.5 Difficulty: Theoretical EPSS 0.09% · P1

Affected Version Matrix 18

VendorProductVersion RangeStatus
LinuxLinuxc535e923bb97a4b361e89a6383693482057f8b0c< 66442cf9989bd4489fa80d9f37637d58ab016835affected
c535e923bb97a4b361e89a6383693482057f8b0c< d288fbe652ef43b7128e4bc0c0c2ef6bd03a2210affected
c535e923bb97a4b361e89a6383693482057f8b0c< 9e3d47904b8153c8c3ad2f9b66d5008aad677aa8affected
c535e923bb97a4b361e89a6383693482057f8b0c< d21923a8059fa896bfef016f55dd769299335cb4affected
c535e923bb97a4b361e89a6383693482057f8b0c< 751f60bd48edaf03f9d84ab09e5ce6705757d50faffected
c535e923bb97a4b361e89a6383693482057f8b0c< 85dbbf7dc88b0a54f2e334daedf6f3f31fd004faaffected
c535e923bb97a4b361e89a6383693482057f8b0c< 265e56714635c5dd1e5964bfd97fa6e73f62cde5affected
c535e923bb97a4b361e89a6383693482057f8b0c< 014077044e874e270ec480515edbc1cadb976cf2affected
… +10 more rows
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I. Basic Information for CVE-2026-23463

Vulnerability Information
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Vulnerability Title
soc: fsl: qbman: fix race condition in qman_destroy_fq
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: soc: fsl: qbman: fix race condition in qman_destroy_fq When QMAN_FQ_FLAG_DYNAMIC_FQID is set, there's a race condition between fq_table[fq->idx] state and freeing/allocating from the pool and WARN_ON(fq_table[fq->idx]) in qman_create_fq() gets triggered. Indeed, we can have: Thread A Thread B qman_destroy_fq() qman_create_fq() qman_release_fqid() qman_shutdown_fq() gen_pool_free() -- At this point, the fqid is available again -- qman_alloc_fqid() -- so, we can get the just-freed fqid in thread B -- fq->fqid = fqid; fq->idx = fqid * 2; WARN_ON(fq_table[fq->idx]); fq_table[fq->idx] = fq; fq_table[fq->idx] = NULL; And adding some logs between qman_release_fqid() and fq_table[fq->idx] = NULL makes the WARN_ON() trigger a lot more. To prevent that, ensure that fq_table[fq->idx] is set to NULL before gen_pool_free() is called by using smp_wmb().
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qman_destroy_fq函数存在竞争条件，可能导致数据损坏。
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 c535e923bb97a4b361e89a6383693482057f8b0c ~ 66442cf9989bd4489fa80d9f37637d58ab016835 -
LinuxLinux 4.9 -

II. Public POCs for CVE-2026-23463

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III. Intelligence Information for CVE-2026-23463

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Same Patch Batch · Linux · 2026-04-03 · 71 CVEs total

CVE-2026-314029.8 CRITICALnfsd: fix heap overflow in NFSv4.0 LOCK replay cache
CVE-2026-234509.8 CRITICALnet/smc: fix NULL dereference and UAF in smc_tcp_syn_recv_sock()
CVE-2026-234279.8 CRITICALksmbd: fix use-after-free in durable v2 replay of active file handles
CVE-2026-234289.8 CRITICALksmbd: fix use-after-free of share_conf in compound request
CVE-2026-234559.1 CRITICALnetfilter: nf_conntrack_h323: check for zero length in DecodeQ931()
CVE-2026-234618.8 HIGHBluetooth: L2CAP: Fix use-after-free in l2cap_unregister_user
CVE-2026-234258.8 HIGHKVM: arm64: Fix ID register initialization for non-protected pKVM guests
CVE-2026-234628.8 HIGHBluetooth: HIDP: Fix possible UAF
CVE-2026-234578.6 HIGHnetfilter: nf_conntrack_sip: fix Content-Length u32 truncation in sip_help_tcp()
CVE-2026-234598.2 HIGHip_tunnel: adapt iptunnel_xmit_stats() to NETDEV_PCPU_STAT_DSTATS
CVE-2026-234568.2 HIGHnetfilter: nf_conntrack_h323: fix OOB read in decode_int() CONS case
CVE-2026-313938.1 HIGHBluetooth: L2CAP: Validate L2CAP_INFO_RSP payload length before access
CVE-2026-313928.1 HIGHsmb: client: fix krb5 mount with username option
CVE-2026-313987.8 HIGHmm/rmap: fix incorrect pte restoration for lazyfree folios
CVE-2026-234327.8 HIGHmshv: Fix use-after-free in mshv_map_user_memory error path
CVE-2026-234377.8 HIGHnet: shaper: protect late read accesses to the hierarchy
CVE-2026-234587.8 HIGHnetfilter: ctnetlink: fix use-after-free in ctnetlink_dump_exp_ct()
CVE-2026-234447.8 HIGHwifi: mac80211: always free skb on ieee80211_tx_prepare_skb() failure
CVE-2026-234457.8 HIGHigc: fix page fault in XDP TX timestamps handling
CVE-2026-234497.8 HIGHnet/sched: teql: Fix double-free in teql_master_xmit

Showing top 20 of 71 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

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Same vendor: Linux

V. Comments for CVE-2026-23463

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